Emerson XR75CX User Manual

8 • XR75CX I&O Manual 026-1210 Rev 0 09-FEB-2011
7 Parameters
Code Parameter Function
rtc Real time clock menu (only for
controllers with RTC)
Sets the time and date and defrost start time.
REGULATION
Hy Differential (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.
LS Minimum setpoint (-100°C to SEt/-148°F to SEt)
Sets the minimum value for the setpoint.
US Maximum setpoint (SEt to 110°C/ SEt to 230°F)
Set the maximum value for the setpoint.
ot Thermostat probe calibration (-12.0 to 12.0°C; -120 to 120°F)
Allows to adjust possible offset of the thermostat probe.
P2P Evaporator probe presence n = not present: the defrost stops by time
y = present: the defrost stops by temperature
oE Evaporator probe calibration (-12.0 to 12.0°C; -120 to 120°F)
Allows to adjust possible offset of the evaporator probe.
P3P Third probe presence (P3) n = not present; the terminals 18-20 operate as digital input
y = present; the terminals 18-20 operate as third probe
o3 Third probe calibration (P3) (-12.0 to 12.0°C; -120 to 120°F)
Allows to adjust possible offset of the third probe.
P4P Fourth probe presence (n = not present; y = present)
o4 Fourth probe calibration (-12.0 to 12.0°C)
Allows to adjust possible offset of the fourth probe.
Ods Outputs activation delay at start
up
(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.
Ac Anti-short cycle delay (0 to 50 min)
Minimum interval between the compressor stop and the following restart.
rtr Percentage of the second and
first probe for regulation (0 to
100; 100 = P1, 0 = P2 )
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).
CCt Compressor ON time during
continuous cycle
(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.
CCS Setpoint for continuous cycle (-100 to 150°C)
Sets the setpoint used during the continuous cycle.
Con Compressor ON time with
faulty probe
(0 to 255 min)
Time during which the compressor is active in case of faulty thermostat probe. With
Con = 0, compressor is always OFF.
CoF Compressor OFF time with
faulty probe
(0 to 255 min)
Time during which the compressor is OFF in case of faulty thermostat probe. When CoF
= 0, compressor is always active.
Table 7-1 - List of Parameters

Emerson XR75CX Specifications

General

Brand	Emerson
Model	XR75CX
Category	Controller
Language	English