Figure 9: External Temperature Sensor - Functionality - Emerson Copeland EazyCool ZXME020E Application Manuallines

Parameter Description
Compressor
C05 regulation probe
selection
Use the liquid line
G56
solenoid
Digital Input 3
R07
function
Digital Input 3
R08
polarity
Table 10: External room thermostat - Parameters
Temperature control by means of an external temperature probe (not recommended for ZXDE
units)
The temperature of a cold room or cooling cabinet can be controlled by means of an additional
temperature (Analog Input AI7, component B7 in wiring diagram) probe (NTC, 10kΩ - for detailed
temperature-resistance-curve, see Appendix 8). The probe can be located in the evaporator or in
the room. The location of the probe has to be considered for the configuration of the P7C/A19 setting.
Based on the value provided by the B7-temperature sensor the compressor will be switched on and
off according to the following graphics:
Figure 9: External temperature sensor – Functionality
The following parameters need to be changed to control a cooling cabinet or a cold room with a
temperature sensor:
Parameter Description
Probe 7
A19
configuration
Compressor
C05 regulation probe
selection
Case temperature
G01
probe selection
Setpoint case
G02
temperature
Position
G03 differential case
temperature
14
Factory settings /
Range
1 = Suction pressure
probe = SuP
NO
0 = Not used = nu
1 = Closed = CL
Factory settings /
Range
0 = Not used = nu
1 = Suction pressure
probe = SuP
0 = Not used = nu
2°C
1K / 0.1 to 25.5K
Recommended settings /
Comments
Suction pressure switch / Room
thermostat input = 3 = diS
NO >> If a solenoid is used in the
liquid line, see Chapter 2.13
"Pump-down - General" for
parameter settings
Suction pressure switch / Room
thermostat input = 1 = SuS
1 = Closed = CL (no change)
Recommended settings / Comments
Thermostat temp (NTC10K) = 2 = tnt or
Evaporator temp (NTC10K) = 5 = EPt
Case temperature = 2 = CSt
Thermostat temperature = 4 = tnt or
Evaporator temperature = 5 = EPt
Choose setpoint according to
requirements of cooled goods
Setpoint G02 + positive differential G03
results in cut-out value for compressor
C6.1.6/0117-1017/E