10
Sr.No.
Parameter
(LCD Message)
Description of parameters and functions.
Parameter setting
method.
1 SEC
1 SEC
120 SEC
90 SEC
10 SEC
5 SEC
WFS NORMAL DLY
WFS PWR ON DLY
Use UP/DOWN keys to set desired value.
If this parameter is set at 10 seconds, the
system will activate the flow switch alarm
only if the error persists for or more than
10 seconds. In this manner a false alarm
can be avoided during normal operation.
System will ignore WFS error for WFS
PWR ON DLY secs at system startup.
Use UP/DOWN keys to set desired value.
Parameter, press the set key.
To change WFS Normal Dly
To change WFS Pwr on Dly
parameter,Press the set key.
17
16
Function : To set WFS trip sensing
delay.
Function: To set WFS trip sensing delay
on power up.
Range
Range
Min
Min
Max
Max
Fact. Set
Fact. Set
Use UP/DOWN keys to set desired value.
230V = Controller will sense fault if i/p is
230V.
0V = Controller will sense fault if i/p is 0V.
To change Fault Sens Logic
parameter, press the set key.
Range
Min
Max
Fact. Set
0V
230 V
230V
FAULT SENS LOGIC
15
Function : To set tripping voltage of digital
inputs.
AFT PROBE CAL
same as above.
Use UP/DOWN keys to set desired value.
To change AFT Probe Cal.
parameter, press the set key.
14
Function : To set Antifreeze probe
calibration.
Range
Min
Max
Fact. Set
-10.0ºC
10.0ºC
0.0ºC
9
Sr.No.
Parameter
(LCD Message)
Description of parameters and functions.
Parameter setting
method.
AFT SET TEMP
Use UP/DOWN keys to set desired value.
To change AFT SET TEMP.
parameter, press the set key.
11
Function: To set Antifreeze tripping set
temp.
MAIN PROBE CAL
EXAMPLE :
If the actual temperature is
20.0ºC and the temperature on the
controller shows 22.0ºC set this
O
parameter to -2.0 C and once out of this
mode, the temperature will display 20.0ºC
(22.0ºC-2.0ºC).
Use UP/DOWN keys to set desired value.
During the course of time there may be a
slight offset in the actual temperature and
the temperature displayed.
To change Main Probe Cal.
parameter, press the set key.
13
Range
Min
Max
Fact. Set
Function : To set Main(Liquid) probe
calibration.
Range
Min
Max
Fact. Set
-30.0ºC
Lt-1.0ºC
5.0ºC
AFT DIFFERENTIAL
parameter, press the set key.
To change the AFT Differential
12
Function : To set fault resetting differential
for AFT set point.
Use UP/DOWN keys to set desired value.
EXAMPLE :
If the AFT set point is set at
5.0ºC and differential is set to 2.0ºC then
after tripping on AFT fault controller will clear
the AFT fault only when the AFT temperature
goes above 7.0ºC(5.0ºC+2.0ºC).
Note :
If this fault selected to manual reset
press RST key for 4 seconds clear the fault.
1.0ºC
20.0ºC
2.0ºC
Range
Min
Max
Fact. Set
-10.0ºC
10.0ºC
0.0ºC
EXAMPLE :
If this parameter is set to
5ºC controller will trip the compressor on
Antifreeze fault if the AFT sensor goes
below 5ºC.
Summary of Contents for MICRO CHILL
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