Page 14 – Bulletin 100-50-5.2
READOUT DESCRIPTION CAUSE and FAILSAFE
nonE
No Active Alarms Normal Operation
PSAL
Pressure Sensor Alarm
When the pressure is outside the operating range. Will force a
pump-down.
tSAL
Suction Temperature Sensor Alarm
When the suction temperature is outside the operating range.
(under -60 degrees, over 150 degrees) Will force a pump-down.
LSAL
Liquid Outlet Temperature Sensor
Alarm
When the liquid outlet temperature is outside the operating
range. Will force a pump-down.
LSHA
Low Superheat Alarm
When superheat is below 3 degrees for 30 cumulative seconds
or more.
APPENDIX G - Alarms and Failsafes
APPENDIX H - Technical Specifications
ELECTRICAL
Supply Voltage
20-26VAC 50/60Hz or 22-26.6VDC; Class II input
40VA is recommended for each controller
Digital Inputs
0-5VDC Maximum Range
Interface to dry contact or open collector
Analog Inputs
4 Temperature Sensors - 10 Kohm,
(2 Kohm, 3 Kohm optional)
1 Pressure Transducer .5 - 4.5VR
(150 psig, 300 psig, or 500 psig)
Digital Display
LED - Red, 7 segment, 4 digit
Indicators
LED - Red, Power
User Interface
Optical Encoder (SELECT knob)
Data Interface
RS485, Modbus
MECHANICAL
Operating Temperature
-40°F to 158°F (-40°C to 70°C)
Humidity
0-95%RH (Non-Condensing)
Enclosure
PC - Light Gray
Wiring
Screw terminal
Mounting
DIN Rail - EN 50 022
COMPLIANCE
Environmental
RoHS
WEEE
Electrical
CE
UL/CUL (Recognized per 873)
FCC (Class A, part 15)
C-tick
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