General Warning Introduction • 1
1 Introduction
1.1. General Warning
Please read the following safety precautions and
warnings before using this manual:
2Overview
2.1. General Description
Model XR35CX (32 mm x 74 mm) is a digital
thermostat with off-cycle defrost, designed for refrig-
eration applications at normal temperature. It has two
(2) relay outputs to control compressor and light (con-
figurable).
It can also have up to four (4) NTC, CtC, or
PT1000 probe inputs: the first one for temperature
control, the second one located on the evaporator to
control the defrost termination temperature. One of
the two digital inputs can operate as a third tempera-
ture probe. The fourth probe is used to signal the con-
denser temperature alarm or to display a temperature
value. Set the PbC parameter to CtC to support stan-
dard CPC temperature sensors (factory default).
The RS485 serial output enables the controller to
be connected to a network line that is a MODBUS-
RTU compatible, such as the monitoring units of X-
WEB family. The Hot Key receptacle allows the con-
troller to be programmed by means of the Hot Key
programming keyboard.
The controller is fully configurable through spe-
cial parameters that can be easily programmed
through the keyboard.
2.2. Ordering Code
CAUTION!
• This manual is part of the product and
should be kept near the controller for easy and
quick reference.
• The controller should not be used for purposes
different from those described in this manual. It can-
not be used as a safety device.
• Check the application limits before proceeding.
SAFETY PRECAUTIONS AND
WARNINGS!
• Check that the supply voltage is correct
before connecting the controller.
• Do not expose to water or moisture: use the con-
troller only within the operating limits and avoid sud-
den temperature changes with high atmospheric
humidity to prevent condensation from forming.
• Warning! Disconnect all electrical connections
before performing any kind of maintenance.
• Fit the probe where it is not accessible by the end
user. The controller must not be opened.
• In case of failure or faulty operation, send the
controller back to the distributor or to Retail Solutions
(see address) with a detailed description of the fault.
• Verify the maximum current that can be applied
to each relay (see Section 15, Specifications).
• Ensure that the wires for probes, loads, and the
power supply are separated and far enough from each
other, without crossing or intertwining.
• In case of applications in industrial environ-
ments, the use of main filters (our mod. FT1) in paral-
lel with inductive loads could be useful.
Device
Name
Dixell Code
Emerson
Code
XR35CX -
110VAC
XR35CX -4C6F3B
X0LG1MEUB4NA-000
318-6020
XR35CX -
230VAC
XR35CX -5C6F3B
X0LG1MEUB5NA-000
318-6021
Table 2-1 - Product Ordering Code
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