Parker Sporlan Subcool Control, Installation And Operation Instructions Manual

Page: 13 / 24

Bulletin 100-50-5.2 – Page 13
APPENDIX F - Parameter Definitions
DISPLAY MEANING DESCRIPTION
ESC Escape
Escape from the Settings Menu and Return to Process
Variables Menu
LoSP Liquid Outlet Temperature Control Setpoint
The target control temperature of the liquid leaving the
heat exchanger
rghL Return Gas High Limit
Limits the temperature of the superheated refrigerant to a
maximum target value (Limits superheat PID target)
SboF Subcooler Off Temperature Differential
Temperature differential above the liquid outlet tempera-
ture setpoint that the liquid inlet temperature must fall
below in order to switch to OFF mode. Will switch back to
cooling after the liquid inlet temperature rises above the
liquid outlet tempe subcooler off temperature
differ 5 degrees F
SHSP Superheat Setpoint
The minimum target superheat setpoint that the superheat
PID can try to maintain
rEFr Refrigerant
The currently selected refrigerant used to calculate the
saturation temperature based on suction pressure
HiCP Maximum Stepper % Open The maximum % open of the valve referenced to full stroke
-LP- Liquid Proportional Gain Coefficient Liquid Proportional Gain Coefficient
-L- Liquid Integral Gain Coefficient Liquid Integral Gain Coefficient
-Ld- Liquid Derivative Gain Coefficient Liquid Derivative Gain Coefficient
-SP-
Superheat Proportional Gain Coefficient Superheat Proportional Gain Coefficient
-S- Superheat Integral Gain Coefficient Superheat Integral Gain Coefficient
-Sd-
Superheat Derivative Gain Coefficient Superheat Derivative Gain Coefficient
LSHi Low Superheat Integral Gain Coefficient
The integral gain coefficient to use for the superheat PID
loop if the superheat is below 3 degrees F
CyCt
Cycle Time The PID update time
StEP Stepper Type
The number of steps of resolution for the stepper valve at
full stroke
SPoS Manual Stepper Position
Overrides the stepper valve position and moves to the
desired percent open relative to full stroke of the valve
Addr Network Address The address of the controller on the MODBUS network
bAvd Network Baud Rate
The baud rate in hundreds of bits per second of the MOD-
BUS network
nPAr Network Parity Mode The network parity mode of the MODBUS network
nP Units of Pressure
The units of pressure the controller uses to display (PSI or
Bar)
nt
Units of Temperature
The units of temperature the controller uses to display
(Fahrenheit or Celsius)
tt4P Temperature Sensor Type
The type of thermistor connected to the controller (2K type
or 3K type)
Pt4P Pressure Sensor Type
The type of pressure sensor connected to the controller
(absolute or gauge type)
Prng
Pressure Sensor Range
The range of the pressure sensor connected to the control-
ler (0-150 PSI, 0-300 PSI, or 0-500 PSI)
CALP Pressure Calibration Offset Adds a constant offset to the pressure reading
CLt1
T1 Temperature Calibration Offset Adds a constant offset to the T1 temperature reading
CLt T2 Temperature Calibration Offset Adds a constant offset to the T2 temperature reading
CLt3 T3 Temperature Calibration Offset Adds a constant offset to the T3 temperature reading
CLt4 T4 Temperature Calibration Offset Adds a constant offset to the T4 temperature reading
Cadr Controller Address on Display Network
Controller must be set to 0 (Standalone) No display net-
working option