CONTROLLER FOR SCREW COMPRESSOR

MEX-200A User's Manual

(주) 엠에스티

198-6, Angok-ro, Bucheon-si, Gyeonggi-do, Republic of Korea

Tel. 032-343-2577~8 / Fax. 032-343-2579 / Mail. mst2577@hanmail.net

◆TABLE◆

-  -

□  Summary

1-1  General specification             .........................................................................3

1-2  Product features                 .........................................................................4

1-3  Input/output instruction          ..........................................................................5

□  Exterior feature and screen

2-1  Exterior feature                  .........................................................................6

2-2  Dimension                       .........................................................................7

2-3  Screen                          .........................................................................7

□  Menu composition

3-1  Menu organization               .........................................................................8

3-2  Menu approach level            ..........................................................................9

3-3  The method of menu composition  .....................................................................9

3-4  Set up basic operation          ........................................................................12

3-5  Set up registered operation      .......................................................................13

3-6  Set up alarm                    .......................................................................13

3-7  Set up expanding operation     ........................................................................14

3-8  Set up device condition         ........................................................................16

3-9  Set up error correction          ........................................................................17

3-10 Equipment test mode           ........................................................................17

3-11 Shipping condition setup        .......................................................................18

3-12 Compulsive initialization         .......................................................................19

□ Operation condition

.......................................................................19

□ Alarm check

5-1  Alarm history                    .......................................................................19

5-2  Alarm types                     .......................................................................20

□ Error checking method

.......................................................................21

□ Attachment map

......................................................................22

□ Apply range

......................................................................23

□ Summary

MEX200 is a strong control device based on the Micro Processor program which applies screw compressors to use for time function(step maintenance, operation delay, pump down). When the device detects a problem, it rings an alarm and save the alarm information as to keep it's maintenance and repair convenient. A full size of LCD and touch screen display vast information at one sight and its function is easy to set and manage.

1-1 General specification

(1)Power specification

Input power	DC 24V / 0.6A AC 24V / 0.6A
Contact voltage	SSR output 3A
Interior voltage	1500V 3minutes

(2)CPU, LCD specification

CPU	ATmega2560, 7.3728MHz
LCD	240x128 DOTS, 5 inch, TOUCH function

(3)Digital input/output specification

Digital input	10EA
Digital output	12EA

(4)Analog intput specification

Analog input	4~20mA 3EA
	NTC (10K@25'C) 2EA NTC (3.241K@150'C) 1EA

(5)Analog output specification

Analog output	4~20mA 3EA

(6)Communication specification

Communication method	RS485, ModBus RTU protocol
Communication specification	8Bits Data, No Parity Bit, 1 Stop Bit 4800, 9600, 19200, 38400 BPS

1-2 Product features

(1)The full version of graphic LCD and touch function

The full size of LCD and touch screen function display vast information and make it easy to recognize and control.

(2)Alarm information record

The product can save maximum 98 alarm records, which helps its maintenance and repair convenient.

(3)Expansion

It supports RS485 communication and ModBus RTU.

(4)Setup protection

The setup information is kept in case of electricity power failure.

(5)Fan delay time

When power is off, fan operates delay time in order to emanate potential heat and prevent a congelation.

(6)Small and slim size

The control board and LCD are united providing with spatial merit.

(7)Registered operation

The equipment can be controlled to operate/stop by registered time system which saves energy.

(8)Internal clock function

RTC is installed inside the device and it displays real time, saves alarm/release time and has a registered operation/stop function.

(9)Protection

The administrator needs the password to control fixed setup figure that has big influence on air cooler operation.

(10)Various digital input/output port and analog output

It uses 10 of digital input, 12 of digital output and 3 of output 4~20mA.

(11)Any compressor maker

It has capacity control setup function which operates in any compressor.

1-3 Input/output instruction

(1)Digital input signal

Name	Function	Active State	Symbol
1	Over-load Main Motor	fault (open)	OCC
2	Reverse-Phase Main Motor	fault (open)	REV
3	Low-Pressure Switch Signal	fault (open)	LPS
4	High-Pressure Switch Signal	fault (open)	HPS
5	Oil Level Switch Signal	fault (open)	OLS
6	Over-heat Compressor Signal/ Oil Flow Switch Signal	fault (open)	OVH/OFS
7	Condenser Fan Fault Signal	fault (open)	OCF
8	Flow Signal - Pump(Fan) Interlock	fault (open)	FS
9	Over-load Pump(Fan) Motor	fault (open)	PIL
10	Remote Start/Stop Control	Run (closed)	RET

(Table 1)

(2)Digital output signal

Name	Function	Active State	Symbol
A	Load Control Capacity SOL V/V (CR1) Load control valve CR1 – 75%	ON	S1%
B	Load Control Capacity SOL V/V (CR2) Load control valve CR2 – 50%	ON	S2%
C	Load Control Capacity SOL V/V (CR3) Load control valve CR3 – 25%(start)	ON	S3%
D	Liquid SOL V/V	ON	SOL
E	Main Magnetic Contactor/ PW1	ON	CM/PW1
F	Start Magnetic Contactor/PW2	ON	CY/PW2
G	Delta Magnetic Contactor	ON	CD
H	Liquid Injection Sol V/V Control	ON	LIS
I	Economizer SOL V/V	ON	ECS
J	Run State Signal	ON	RUN
K	Total Alarm Signal	ON	ALR
L	Pump(Fan)Motor Control Signal	ON	PM

(Table 2)

(3)Analog input signal

NO.	Function	Type	Range
1	Input of entrance temperature sensor	NTC10K	-40~70'c
2	Input of exit temperature sensor	NTC10K	-40~70'c
3	Input of discharge gas sensor	NTC3.241K	-20~200'c

(Table 3)

(4)Analog output signal

NO.	Function	Type	Range
1	Output of entrance temperature sensor	4~20mA	-30~70'c
2	Output of exit temperature sensor	4~20mA	-30~70'c
3	Output of discharge gas sensor	4~20mA	0~200'c

(Table 4)

2. Exterior feature and screen

2-1Exterior feature

(Picture 1. Exterior feature)

●  ON/OFF : To stop or operate the equipment

●  MODE   : To select menu or set lock mode

●  UP      : To go up on menu or enter selected menu

●  DOWN   : To go up on menu

● LED           : When it's operating, LED is on and when an alarm occurs, LED blinks.

2-2 Dimension

The size of round perforations :199x143(mm)

Thickness : 39.2(mm)

(Picture 2. Dimension)

2-3 Screen

(Picture 3. Screen)

□ Menu composition

3-1 Menu organization

1. Set up basic operation			2. Set up registered operation			3. Set up alarm			4. Set up expanding operation
1.Ideal control temperature 2.Operating control deviation 3.Stop control deviation 4.Control deviation of 50% capacity 5.Control deviation of 75% capacity 6.Dead band(+) deviation 7. Dead band(-) deviation 8. Temperature for liquid injection 9. Deviation of liquid injection 10. Operation delay 11. Stop delay 12. Back light			1.SUN: Operation/Stop time 2.MON: Operation/Stop time 3.TUE: Operation/Stop time 4.WED: Operation/Stop time 5.THU: Operation/Stop time 6.FRI: Operation/Stop time 7.SAT: Operation/Stop time			1.Delay of flow detection 2.Operation of flow detection 3.Overheat of discharge gas 4.Overcooled temperature of the exit 5.Oil flow detection 6.Oil flow operation 7.Low pressure detection 8.Low pressure operation 9.Oil level delay 10.Oil level operation 11.Uses of condenser fan alarm			1. Set up operation mode 2. Set target-controlled 3. Step maintenance time 4. Step maintenance time of starting operation 5. Comp starting operation delay 6. Comp restarting operation delay 7. Comp automatic stop delay 8. Comp manual stop delay 9. Starting operation close delay 10. Y/D-P/W switchable time 11. Pump down time 12.Function of recovery from an electrical failure 13. Set system address 14. System communication speed 15. Set local address 16. Local communication speed
5. Set up device condition			6. Set-up error-correction			7. Device test mode			8. Set up shipping condition
1.Comp starting operation method 2.Uses of entrance temperature sensor 3.Uses of exit temperature sensor 4.Uses of discharge gas sensor 5.Uses of liquid injection valve 6.Composition of starting operating 7.Composition of 50% control capacity 8.Composition of 75% control capacity 9.Composition of 100% control capacity 10.Output port changes			1.Entrance temperature correction 2.Exit temperature correction 3.Discharge gas temperature correction 4.Time setup 5.Touch revision			1.The output of capacity control CR1 2.The output of capacity control CR2 3.The output of capacity control CR3 4.The output of liquid valve 5.The output of main magnet CM 6.The output of start magnet CY 7.The output of delta magnet CD 8.The output of liquid injection valve LIS 9.The output of saving valve ECS 10.The output of operating condition 11.The output of integrated alarm 12.The pump output			1. Test mode 2. Delete alarm history 3. Delete operation records 4. Input entrance temperature 5. Input exit temperature 6. Input discharge gas temperature 7. Entrance temperature 4mA 8. Entrance temperature 20mA 9. Exit temperature 4mA 10. Exit temperature 20mA 11. Discharge gas temperature 4mA 12. Discharge gas temperature 20mA

(Table 5)

3-2 The level of menu approach

Approach level	USER 1 (CODE = 8)	SERVICE 1 (CODE = 13)	SERVICE 2 (CODE = 803)	SERVICE 3 (CODE = 1308)
Available menu	Setup basic condition Setup error correction	Setup basic condition Setup registered operation Setup expanding operation Setup device condition Setup error-correction device test mode	Setup basic condition Setup registered operation Setup expanding operation Setup device condition Setup error-correction device test mode	Setup basic condition Setup registered operation Setup expanding operation Setup device condition Setup error-correction device test mode Setup Shipping condition
Maintenance time	1min	10min	30min	1hour

(Table 6)

1.When you touch         (Set up)on the screen like picture 5, it displays 'input approach code' screen as 'picture 4' shows below. (Once you set menu by inputting approach code, if you use that menu again in maintaining time, it doesn't ask for inputting code anymore.)

2.After inputting approach code by touching TENKEY, Touch     of TENKEY , then approach code

input is completed.

3.Press 'mode button' for 3 seconds in order to change the approach level or set lock mode before maintaining time ends.

4.Device condition setup, device test mode, output condition setup can only be reset during stop.

5.While lock mode is applying, the screen displays    icon.

(Picture 4)Approach code input

3-3 The method of  menu composition

Touch          (Set up)on the main screen (Picture 5)

(Picture 5) Main screen

(Way 1)Select a screen that contains an desired item                                                                     by touching     ,     .

(Way 2)Select desired item by pressing the mode

button

(Picture 6) Set up

(Way 1) Press    button on the screen after selecting

the item.

(Way 2) Double press the item that you want.

(Way 3) Press  button to select the item and

button to enter to detail menu.

(Picture 7) Set up

1.Press the item to change.

2.Select desired setup figure with TENKEY

3.Setup is done when you press      of TENKEY.

* Set range will be displayed below TENKEY.

If the figure is out of set range, it returns to the

standard figure with an alarm.

(Picture 8) Expending operation

*Press     to go back to the former menu.

*Setup process closes automatically if you don't touch any key or screen more than 1 minute.

Set up recovery from an electrical failure, uses of entrance temperature sensor and uses of liquid injection valve.

1. Select ON/OFF by touching ON/OFF.

2. Setup is done when you press    .

(Picture 9) Expanding operation

Set up output changes.

1. Select ACTIVE/INACTIVE by touching

ACTIVE/INACTIVE

2. After select the first number, select ideal relay

numbers by pressing     ,    .

3. After select the second number, select ideal relay

numbers by pressing     ,    .

(Picture 10) Output changes            4. Setup is done when you press

Set up registered operation.

1. Select hours or minutes of the day to change.

2. Select setup figure by TENKEY.

3. Setup is done when you press     .

4. Set the registered time by repeating this process.

(1~3)

(Picture 11) Set up registered operation

Set up clock.

1. Select year/month/date/day/hour/minute/second

with TENKEY.

2. Setup is done when you touch     /    /

/    /     /    .

(Picture 12) Set up clock.

Touch revision

(Way 1) Press      after pressing '5>Error-correction'

(Way 2) Double press '5>Error-correction'

(Way 3) After select '5>Error-correction' by pressing

mode  button, press  button then it moves

to the first step displaying the screen

(Picture 13) Error-correction                       like (picture 14).

Touch exactly the center of "+" icon with a sharp pencil on

the screen (picture 14) then it moves to the second

step like (picture 15).

(Picture 14) Touch revision STEP 1

Touch exactly the center of "+" icon on the screen (Picture

15) then it moves to the third step like (picture 16).

(Picture 15) Touch revision STEP 2

Touch exactly the center of "+" icon on the screen (Picture

16) then touch screen revision is completed and display

like (picture 17).

(Picture 16) Touch revision STEP 3

(Picture 17) Touch revision completed.

3-4 Set up basic operation

NO.	ITEM	RANGE	BASIC NO	STEP	UNIT	VIEW	ACCESS
1	Ideal standard	-99.9~99.9	7.0	0.1	Temp('c)	USER1	USER1
2	Operating control deviation	0.1~50.0	5.0	0.1	Temp('c)	USER1	USER1
3	Stop control deviation	-50.0~0.0	0.0	0.1	Temp('c)	USER1	USER1
4	Control deviation of 50% capacity	0.0~50.0	1.0	0.1	Temp('c)	SVC1	SVC1
5	Control deviation of 75% capacity	0.0~50.0	2.0	0.1	Temp('c)	SVC1	SVC1
6	Dead band(+) deviation	0.0~20.0	0.2	0.1	Temp('c)	SVC1	SVC1
7	Dead band(-) deviation	-20.0~0	-0.2	0.1	Temp('c)	SVC1	SVC1
8	Liquid injection control temperature	0.0~180.0	100	1	Temp('c)	SVC1	SVC1
9	Liquid injection control deviation	-50.0~-1.0	-10	1	Temp('c)	SVC1	SVC1
10	Operation delay	1~180	3	1	Sec	USER1	USER1
11	Stop delay	1~180	3	1	Sec	USER1	USER1
12	Backlight	0~60 (0 is always on)	0	1	Min	USER1	USER1

(Table 7)

1. Ideal standard : Set up the standard figure for cooler control.

2. Operation control deviation : Set up conditions for the cooler to operate.

Real time temperature >= (Ideal temperature + Operating control deviation) then the cooler starts operating. The set range is 0.1~50.0'c and the figure should be higher than the minimum number of control deviation with 75% of capacity.

3. Stop control deviation : Set up conditions for the cooler to stop.

Real time temperature <= (Ideal temperature + Operating control deviation) then the cooler stops operating.

4. Control deviation of 50% capacity : Set up conditions for control of 50% capacity. Real time

temperature <= (Ideal temperature + Control deviation of 50% capacity + Dead band(-)deviation) then

50% capacity is controled.

5. Control deviation with 75% of capacity : Set up conditions for control of 75% capacity. Real time

temperature <= (Ideal temperature + Control deviation of 75% capacity + Dead band (-)deviation) then 75% capacity is controled.

6. Dead band(+) deviation : Set up the maximum number of capacity maintenance in operation range.

7. Dead band(-) deviation : Set up the minimum number of capacity maintenance in operation range.

*The range of dead band for control of 50% capacity is from (Ideal temperature + Control deviation of

50% capacity +Dead band(-)deviation) to (Ideal temperature + Control deviation of 50% capacity

+Dead band(+)deviation), and in this range, capacity maintenance operation is performed.

*The range of dead band for control deviation of 75% capacity is from (Ideal temperature + Control deviation of 75% capacity +Dead band (-)deviation) to (Ideal temperature + Control deviation of 75% capacity +Dead band(+)deviation), and in this range, capacity maintenance operation is performed.

8. Liquid injection control temperature : Set up conditions for the liquid injection valve to operate.

Discharge gas temperature >=Temperature of liquid injection then the valve starts operating.

9. Deviation for liquid injection : Set up conditions for liquid injection valve to stop.

Discharge gas temperature <=Temperature of liquid injection + deviation for the liquid injection then

the valve stops operating.

10. Operation delay : Once it starts operating, it sets the delay time in order to prevent other devices

from operating at  the same time.

11. Stop delay : Once it stops operating, it sets the delay time in order to emanate potential heat

inside the equipment.

12. Back light mode : Set up the interval time between when the back light is turned on and when it's

off. When the number is 0, the back light is always on.

3-5 Set up registered operation

ITEMS	Operation time ~ Stop time
일(SUN)	09:00 ~ 18:00
월(MON)	08:20 ~ 21:45
화(TUE)	09:00 ~ 14:00
수(WED)	08:00 ~ 21:00
목(THU)	09:00 ~ 09:00
금(FRI)	09:00 ~ 18:00
토(SAT)	07:30 ~ 18:00

(Table 8)

1.It operates at fixed operation time and stops at fixed stop time.

(This is only applied to the case when operation mode is set as registered operation mode.)

2.Make operation time and stop time the same for not operating on a specfic day.

3.When operation time is set later than stop time, it doesn't operate.

4.While it's operating during registered time, it can be managed to operate/stop by

OPERATION/STOP button.

5.After operation time is over, it doesn't work even by OPERATION/STOP button.

3-6 Set up alarm

NO.	ITEM	RANGE	STANDARD	STEP	UNIT	VIEW	ACCESS
1	Delay time of flow detection	0~300	60	1	Sec	SVC1	SVC1
2	Operation time of flow detection	0~300	5	1	Sec	SVC1	SVC1
3	Setup discharge gas overheat	50.0~180.0	115	1	Temp('c)	SVC1	SVC1
4	overcooled exit temperature	-99~99	3	1	Temp('c)	SVC1	SVC1
5	Delay of oil flow detection	0~300	60	1	Sec	SVC1	SVC1
6	Operation of oil flow detection	0~300	0	1	Sec	SVC1	SVC1
7	Delay of low pressure detection	0~300	60	1	Sec	SVC1	SVC1
8	Operation of low pressure detection	0~300	5	1	Sec	SVC1	SVC1
9	Delay of oil level	0~300	60	1	Sec	SVC1	SVC1
10	Operation of oil level	0~300	5	1	Sec	SVC1	SVC1
11	Uses of condenser fan alarm	1:ON 0:OFF	ON			SVC1	SVC1

(Table 9)

1.Alarm of flow detection error

(1)Delay time of flow detection : After the pump(fan) operates, flow detection switch detection starts

operating from delay time of flow detection. (when the number is 0, detection works always)

(2)Operation time of flow detection : When the input of flow detection switch is "0" during operation

time of flow detection, an alarm of 'flow detection error' occurs.

(when the number is 0, detection doesn't work.)

2.Set up discharge gas overheat : When discharge gas temperature excesses discharge gas overheat, an alarm of 'discharge gas overheat' occurs.

3.Set up overcooled exit temperature :When exit temperature is under overcooled exit temperature, an alarm of 'overcooled exit temperature' occurs.

4.Alarm of oil flow error

(1)Delay time of oil flow detection : After the cooler operates, oil flow switch detection starts       operating from delay time of oil flow detection.  (when the number is 0, detection works always)

(2)Operation time of oil flow detection : When the input of oil flow switch is "0" and it's OFF        during operation time of oil flow detection, an alarm of 'oil flow error' occurs.

(When the number is 0, detection doesn't work.)

5.Alarm of low pressure detection error

(1)Delay time of low pressure detection : After the cooler operates, low pressure detection

starts operating from delay time of low pressure detection.

(when the number is 0, detection works always)

(2)Operation time of low pressure detection : When the input of low pressure detection switch is 0 during operation time of low pressure detection, an alarm of 'low pressure error' occurs.

(When the number is 0, detection doesn't work.)

6.Alarm of oil level error

(1)Delay time of oil level detection : After the cooler operates, oil level detection starts

operating from delay time of oil level detection.

(when the number is 0, detection works always)

(2)Operation time of oil level detection : When the input of oil level detection switch is 0

during operation time oil level detection, an alarm of 'oil level error' occurs.

(When the number is 0, detection doesn't work.)

7.Uses of condenser fan alarm : Set up uses of condenser fan alarm.

3-7 Set up expanding operation

NO.	ITEM	RANGE	STANDARD	STEP	UNIT	VIEW	ACCESS
1	Set up operation mode	1:Local 2:Remote 3:Registration	Local			SVC1	SVC1
2	Select the target -controlled	1:Entrance temperature 2:Exit temperature	Exit temperature			SVC1	SVC2
3	Step maintenance time	0~999	10	1	sec	SVC1	SVC2
4	Step maintenance time of starting operation	0~999	60	1	sec	SVC1	SVC2
5	Delay time of comp starting operation	0~600	5	1	sec	SVC1	SVC2
6	Delay time of comp restarting operation	0~600	5	1	min	SVC1	SVC2
7	Comp-automatic stop delay	0~600	5	1	sec	SVC1	SVC2
8	Comp-manual stop delay	0~600	5	1	sec	SVC1	SVC2
9	Starting operation close delay	0~600	15	1	sec	SVC1	SVC2
10	Y/D-P/W switchable time	0.1~30.0	5.0	0.1	sec	SVC1	SVC2
11	Set up pump down time	0~600	60	1	sec	SVC1	SVC2
12	Set up electrical recovery system	1:ON 0:OFF	ON			SVC1	SVC2
13	Set system address	1~128	1	1	sec	SVC1	SVC2
14	System communication speed	1:4800 2:9600 3:19200 4:38400	9600		bps	SVC1	SVC1
15	Set local address	1~128	1	1	sec	SVC1	SVC2
16	Local communication speed	1:4800 2:9600 3:19200 4:38400	9600		bps	SVC1	SVC1

(Table 10)

1. Set up operation mode

(1). Local : The equipment is controlled by the ON/STOP button. LCD displays 'local' icon.

(2). Remote : The equipment can be controlled by remote ON/STOP signal. LCD displays

'remote' icon.

(3). Registration : The equipment operates/stops by the registered operation/stop time. LCD

displays the 'registration' icon.

2. Select the target-controlled: Set whether it's controlled by entrance temperature or exit

temperature.

(1). Entrance temperature

(2). Exit temperature

3. Step maintenance time : Control capacity should be maintained during step

maintenance time after 50/75/100% control capacity.

4. Step maintenance time of starting operation : Control capacity should be maintained during step

maintenance time of starting operation after 50/75/100 control capacity of starting operation

5. Delay time of comp starting operation : Output of main magnet CM and start magnet CY

is on after liquid valve output became on and delay time of comp starting operation

passed.

6. Delay time of comp restarting operation : The comp operation is possible to work when the

comp is turned off after delay time of comp restarting operation passed.

7. Delay time of comp automatic stop : Output of liquid valve is off when comp is automatically

turned off by temperature after delay time of comp automatic stop passed.

8. Delay time of comp manual stop : Output of liquid valve is off when comp is manually off by

stop button, remote operation stop control signal or registered operation/stop time after

delay time of comp manual stop passed.

9. Starting operation close delay time : Capacity control valve is controlled based on the

composition figure of 50% control capacity after output of delta magnet CD became on

and starting operation close delay time passed.

10. Y/D-P/W switchable time : Output of start magnet CY is off and output of delta magnet

CD is on when output of main magnet CM and start magnet CY is on and Y/D-P/W

switchable time is over.

11. Set up pump down time : Output of magnet and capacity control valve is off after                      output of liquid valve is off and pump down time passed.

12. Set up electrical recovery system : Set whether to make it return to operation/stop status               of the time when is right before an electrical fail occurs in case of electrical recovery.

13. Set system address  : Create ID to use for system RS485's communication.

14. System communication speed : Set up system communication speed.

15. Set local address : Create ID to use for local RS485's communication.

16. Local communication speed : Set up local communication speed.

3-8 Set up device condition

NO.	ITEM	RANGE	STANDARD	STEP	UNIT	VIEW	ACCESS
1	Select comp starting operation method	1:Direct 2:YDelta 3:PWinding	YDelta			SVC1	SVC2
2	Uses of entrance temperature sensor	1:ON 0:OFF	ON			SVC1	SVC2
3	Uses of exit temperature sensor	1:ON 0:OFF	ON			SVC1	SVC2
4	Uses of discharge gas sensor	1:ON 0:OFF	ON			SVC1	SVC2
5	Uses of liquid injection valve	1:ON 0:OFF	ON			SVC1	SVC2
6	Composition of starting operation	OPTION:USE/NOT USE CR1 CR2 CR3 ON/OFF ON/OFF ON/OFF	USE OFF/OFF/ON			SVC1	SVC2
7	Composition of 50%control capacity		USE OFF/ON/OFF			SVC1	SVC2
8	Composition of 75% control capacity		USE ON/OFF/OFF			SVC1	SVC2
9	Composition of 100% control capacity		USE OFF/OFF/OFF			SVC1	SVC2
10	Output changes	OPTION:USE/NOT USE CHANGE RELAY<->CHANGE RELAY	NOT USE 1 <-> 1			SVC1	SVC2

(Table 11)

1. Select comp start operation method

(1). YDelta : Output of start magnet CY is off and output of delta magnet CD is on after

output of main magnet CM and start magnet CY is on and Y/D-P/W switchable time is over.

(2). Direct : Only output of main magnet CM is on without controlling output of start

magnet CY and delta magnet CD.

(3). PWinding : Output of PW2 is on after output of PW1 is on and Y/D, P/W switchable

time is over.

2. Uses of entrance temperature sensor : Set up whether to use entrance temperature sensor.

3. Uses of exit temperature sensor : Set up whether to use exit temperature sensor.

4. Uses of discharge gas temperature sensor : Set up whether to use gas temperature sensor.

5. Uses of liquid injection valve : Set up whether to use liquid injection valve.

6. Composition 50%/75%/100% operation capacity control : Set up composition of valve and

composition 50%/75%/100% operation capacity control.

7. Output changes : When output port is broken, during operation, substituting for other

output port is convenient.

3-9 Set up error-correction

NO.	ITEM	RANGE	STANDARD	STEP	UNIT	VIEW	ACCESS
1	Entrance temperature correction	-20.0~20.0	0.0	0.1	Temp('c)	USER1	USER1
2	Exit temperature correction	-20.0~20.0	0.0	0.1	Temp('c)	USER1	USER1
3	Discharge gas temperature correction	-20.0~20.0	0.0	0.1	Temp('c)	USER1	USER1
4	Set up time					USER1	USER1
5	Touch revision					USER1	USER1

(Table 12)

1. Entrance temperature correction : Set up entrance temperature correction.

2. Exit temperature correction : Set up exit temperature correction.

3. Discharge gas temperature correction : Set up discharge gas temperature correction.

4. Set up clock : Set up real time.

5. Touch revision : When touch screen function doesn't work well, number of coordintes X,

Y can be changed.

3-10 Equipment test mode

This mode is to help equipment's test operation and A/S convenient by checking general condition

hence it should be used only by a technician who is well informed on the device.

NO.	ITEM	RANGE	STANDARD	STEP	UNIT	VIEW	ACCESS
1	Output of capacity control CR1	1:ON 0:OFF	OFF			SVC1	SVC1
2	Output of capacity control CR2	1:ON 0:OFF	OFF			SVC1	SVC1
3	Output of capacity control CR3	1:ON 0:OFF	OFF			SVC1	SVC1
4	Output of liquid injection SOL	1:ON 0:OFF	OFF			SVC1	SVC1
5	Output of main magnet CM	1:ON 0:OFF	OFF			SVC1	SVC1
6	Output of start magnet CY	1:ON 0:OFF	OFF			SVC1	SVC1
7	Output of delta magnet CD	1:ON 0:OFF	OFF			SVC1	SVC1
8	Output of liquid injection LIS	1:ON 0:OFF	OFF			SVC1	SVC1
9	Output of operation condition	1:ON 0:OFF	OFF			SVC1	SVC1
10	Output of integrated alarm	1:ON 0:OFF	OFF			SVC1	SVC1
11	Pump output	1:ON 0:OFF	OFF			SVC1	SVC1

(Table 13)

1. Equipment test is only avaliable when the equipment is in stop status.

2. Output of start magnet CY and delta magnet CD can't be on at the same time.

3-11 Set up shipping condition

This function, which is set by the company before shipping, should only be managed by a technician who is well informed on the device.

This mode is used to raise accuracy of the product when shipping so please ask the head company to change it.

NO.	ITEM	RANGE	STANDARD	STEP	UNIT	VIEW	ACCESS
1	Test mode	1:ON 0:OFF	OFF			SVC3	SVC3
2	Delete alarm history	1:YES 0:NO	NO			SVC3	SVC3
3	Delete operation records	1:YES 0:NO	NO			SVC3	SVC3
4	Input entrance temperature	0~1023				SVC3	SVC3
5	Input exit temperature	0~1023				SVC3	SVC3
6	Input discharge gas temperature	0~1023				SVC3	SVC3
7	Entrance temperature 4mA	8000~65535	12950			SVC3	SVC3
8	Entrance temperature 20mA	8000~65535	64850			SVC3	SVC3
9	Exit temperature 4mA	8000~65535	12950			SVC3	SVC3
10	Exit temperature 20mA	8000~65535	64850			SVC3	SVC3
11	Discharge gas temperature 4mA	8000~65535	12950			SVC3	SVC3
12	Discharge gas temperature 20mA	8000~65535	64850			SVC3	SVC3

(Table 14)

1. Test mode : All relays and operating LED are on.

2. Delete alarm history : Initialize all alarm records.

3. Delete operation records : Initialize total operation time of the pump and cooler.

4. Input entrance temperature : Display ADC numbers of entrance temperature.

5. Input exit temperature : Display ADC numbers of exit temperature.

6. Input discharge gas temperature : Display ADC numbers of discharge gas temperature.

7. Entrance temperature 4mA : Set up PWM numbers for 4mA output of entrance

temperature.

8. Entrance temperature 20mA : Set up PWM numbers for 20mA output of entrance

temperature.

9. Exit temperature 4mA : Set up PWM numbers for 4mA output of entrance temperature.

10. Exit temperature 20mA : Set up PWM numbers for 20mA entrance/exit temperature.

11. Discharge gas temperature 4mA : Set up PWM numbers for 4mA output of gas

temperature.

12. Discharge gas temperature 20mA : Set up PWM numbers for 20mA output of gas

temperature.

* Shipping condition setup is only avaliable when the equipment is in stop status.

3-12. Compulsive initialization.

Pressing  button and button for 3 seconds at the same time leads to compulsive initialization of menu setting figures or alarm contents.

(Picture 18) Compulsive initialization           (Picture 19) Initialization completed

□ Operating condition

Operation time of pump and cooler is displayed so supplies exchanges and checks are easy to anticipate, which makes maintenance/repair of the equipment convenient. When you press                        (Operating condition) button on main screen, it displays real time temperature and total operation time of pump and cooler as picture 20 below shows.

(Picture 20) Operation condition

□ Alarm check

5-1Alarm history

NO.	Alarm contents	Alarm/Cancellation	Date occured	Time occured
1	alarm contents #1	alarm/release	month/date	hour:minute
2	alarm contents #2	alarm/release	month/date	hour:minute
3	alarm contents #3	alarm/release	month/date	hour:minute
4	alarm contents #4	alarm/release	month/date	hour:minute
| |	| |	| |	| |	| |
98	alarm contents #98	alarm/release	month/date	hour:minute

(Table 15)

1. Alarm information, date and time occurred is saved when an alarm occurs or is released.

2. Maximum 98 records can be saved and after that, information from the first alarm is                  deleted and new information is saved.

3. When an alarm occurs, alarm bell rings, operation LED blinks and     icon is displayed.

It stops when you press the key.

4. The equipment stops operating when an alarm occurs except alarm of condensor fan.

5. An alarm should be released manually after its cause is checked and deleted.

6. Alarm information is displayed as 'picture21' shows below when you press           (Check

alarm) on main screen.

7. In order to release alarm occurred, delete its cause, touch alarm information to release on the

screen as 'picture21' shows below and touch       (cancel). When screen like 'picture22'

appears, touch     and touch    , then alarm cancellation is completed.

8. In order to delete all alarm history, delete all causes, touch          on picture21 screen

When screen like 'picture 23' appears, touch     and touch    ,  then deletion of all alarm

deletion is completed.

(Picture21)Alarm history                          (Picture22)Alarm release

5-2 Alarm types

NO	Alarm contents	Condition of detection/release
1	Overflow of cooler	Detection condition : When digital input 1 becomes off. Release condition : When digital input 1 becomes on.
2	Cooler reversed	Detection condition : When digital input 2 becomes off. Release condition : When digital input 2 becomes on.
3	Low pressure	Detection condition : When digital input 3 becomes off. Release condition : When digital input 3 becomes on.
4	High pressure	Detection condition : When digital input 4 becomes off. Release condition : When digital input 4 becomes on.
5	Overheat of compressor	Detection condition : When digital input 6 becomes off. Release condition : When digital input 6 becomes on.
6	condenser fan error	Detection condition : When digital input 7 becomes off. Release condition : When digital input 7 becomes on.
7	Flow error	Detection condition : When digital input 8 becomes off. Release condition : When digital input 8 becomes on.
8	Pump motor error	Detection condition : When digital input 9 becomes off. Release condition : When digital input 9 becomes on.
9	Discharge gas overheat	Detection condition : Discharge gas temperature > Discharge gas overheated temperature Release condition : Discharge gas temperature <= Discharge gas overheated temperature - 5℃
10	Overcooled temperature of exit	Detection condition : Exit temperature < Exit overcooled temperature release condition : Exit temperature >= Exit overcooled temperature + 2℃
11	Entrance sensor error	Detection condition : When entrance sensor error(disconnection,short circuit) occurs. Release condition : When entrance sensor is normal.
12	Exit sensor error	Detection condition : When exit sensor error(disconnection,short circuit)occurs. Release condition : When exit sensor is normal.
13	Discharge gas sensor error	Detection condition : When discharge gas sensor occurs. Release condition : When discharge gas sensor is normal.

(Table 16)

□ Error checking method

NO	Problem	Checking order	Measure
1	When power is on and the equipment doesn't work	Check 24V input Check CONTROLLER FUSE	Check power supply Change FUSE
2	When On/Stop button doesn't work	Check whether operation mode is remote mode. Check weather operation mode is registered mode.	Check digital input 10 ON/OFF Check registered start/stop time
3	When the cooler doesn't work in a proper condition	Check whether other alarm besides condensor fan has occurred. Check whether a target-controlled (entrance/exit temperature) is right.	Release alarm after delete the cause of alarm Set selecting a target-controlled of of operation setup correctly
4	When an alarm occurs at the entrance, exit or discharge gas sensor	Check NTC connection.	Tighten connection line
5	When the output port is broken	Test ON/OFF of output port on equipment test mode	Change the broken output port with unused port by using output changes menu (Page10)
6	When other port, not targeted output port is used	Check setup figure of output change (page10)	Check output changes on output change menu(page10)
7	When touch screen function doesn't work		Revise touch function on touch revision menu. (page11)
8	When an alarm release doesn't work	Check whether the condition is alarm cancellation.	Solve the cause of the alarm
9	When menu set doesn't work	Check approach level and operation condition. (Equipment condition setup, equipment test mode and output condition setup can't be changed when the equipment is operating.)	Change approach level (Stop the equipment for equipment condition setup, equipment test mode and shipping condition setup)
10	Analogue output 4~20mA doesn't match	Check whether set analog output's standard 4mA and 20mA of shipping condition setup is right.	Set up analog output's standard 4mA and 20mA of shipping condition setup correctly.

(Table 17)

□ Attachment map

□ Apply range

1. An water-cooled screw cooler

2. An air-cooled screw cooler

3. Chiller

4. CDU

5. Starting operation control

6. Heat Pump System

*Items which are not included in item list can be developed after an order request.