Parameters - Emerson XR75CX Installation And Operation Manual

7

Parameters

Code Parameter
rtc Real time clock menu (only for
controllers with RTC)
Hy Differential
LS Minimum setpoint
US Maximum setpoint
ot Thermostat probe calibration
P2P Evaporator probe presence
oE Evaporator probe calibration
P3P Third probe presence (P3)
o3 Third probe calibration (P3)
P4P Fourth probe presence
o4 Fourth probe calibration
Ods Outputs activation delay at start
up
Ac Anti-short cycle delay
rtr Percentage of the second and
first probe for regulation (0 to
100; 100 = P1, 0 = P2 )
CCt Compressor ON time during
continuous cycle
CCS Setpoint for continuous cycle
Con Compressor ON time with
faulty probe
CoF Compressor OFF time with
faulty probe
Table 7-1 - List of Parameters
8 • XR75CX I&O Manual
Sets the time and date and defrost start time.
REGULATION
(0.1 to 25.5°C / 1 to 255°F)
Intervention differential for setpoint. Compressor Cut IN is setpoint + differential (Hy).
Compressor Cut OUT is when the temperature reaches the setpoint.
(-100°C to SEt/-148°F to SEt)
Sets the minimum value for the setpoint.
(SEt to 110°C/ SEt to 230°F)
Set the maximum value for the setpoint.
(-12.0 to 12.0°C; -120 to 120°F)
Allows to adjust possible offset of the thermostat probe.
n = not present: the defrost stops by time
y = present: the defrost stops by temperature
(-12.0 to 12.0°C; -120 to 120°F)
Allows to adjust possible offset of the evaporator probe.
n = not present; the terminals 18-20 operate as digital input
y = present; the terminals 18-20 operate as third probe
(-12.0 to 12.0°C; -120 to 120°F)
Allows to adjust possible offset of the third probe.
(n = not present; y = present)
(-12.0 to 12.0°C)
Allows to adjust possible offset of the fourth probe.
(0 to 255 min)
This function is enabled at the initial start up of the device and inhibits any output acti-
vation for the period of time set in the parameter.
(0 to 50 min)
Minimum interval between the compressor stop and the following restart.
Allows to set the regulation according to the percentage of the first and second probe,
as for the following formula (rtr(P1-P2)/100 + P2).
(0.0 to 24.0 hr; res. 10 min)
Allows to set the length of the continuous cycle: compressor stays ON without interrup-
tion for the CCt time. Can be used, for instance, when the room is filled with new prod-
ucts.
(-100 to 150°C)
Sets the setpoint used during the continuous cycle.
(0 to 255 min)
Time during which the compressor is active in case of faulty thermostat probe. With
Con = 0, compressor is always OFF.
(0 to 255 min)
Time during which the compressor is OFF in case of faulty thermostat probe. When CoF
= 0, compressor is always active.
Function
026-1210 Rev 0 09-FEB-2011