Xcm25D Electronic Controller - Features; Description; Functionality; Figure 13: Electronic Controller - Emerson Copeland EazyCool OM 501 Series Application Manuallines

XCM25D Electronic controller – Features
2.8
The XCM25D controller is designed to be a powerful, flexible controller for use in multiple
applications. It has been developed for condensing units and allows the adjustment of all relevant
parameters by the user.

2.8.1 Description

WARNING
Electrical shock hazard! Serious personal injuries! There are unused fast-
on pins (C1 & DO2) on the XCM25D which could be under voltage. They are
covered by insulated fast-on flags in the factory. Handle carefully when
removing insulating flags during service on site.
The controller is designed for usage in an outdoor refrigeration unit. It is rated to be used for the
following environment:

Outdoor controller ambient temperature for operation: -40C to 60C

Ambient temperature for storage: -40C to 80C

Maximum humidity: 90% at 48C (non-condensing)

Board power: 24V AC +15%/-20%

Voltage sensing capabilities - Single phase: 100-120, 200-240V AC ± 10%

Voltage sensing capabilities - Three phase: 200-240, 380-460, 575V AC ± 10%
The units of measure are selectable. The factory default unit is [bar] (always considered relative)
for pressure and [°C] for temperature.

Figure 13: Electronic controller

2.8.2 Functionality

The controller allows for easy commissioning by the technician with the factory settings at the
highest program level. It also offers the possibility to make substantial changes to the system
optimization in further programming levels. Advanced functionality can also be activated.
The following functions are covered by the controller:

Condensing unit control, including tandem management

Condenser fan control

Voltage and current sensing (compressor protection)

Liquid injection

Digital compressor control
NOTE: The XCM25D controller on the OM & OL units includes all the functions necessary
for unit control. For additional functionalities please contact your local Application
Engineering representative.
12 C6.1.9/0617/E