Emerson XR75CX Digital Controller for Medium-Low Temperature Refrigeration Applications Digital Controller Installation and Operation Manual
The XR75CX Digital Controller for Medium-Low Temperature Refrigeration Applications is a microprocessor-based controller designed for use in medium or low temperature ventilated refrigeration units. It has four relays to control the compressor, fan, and defrost, and can also manage lighting or auxiliary functions. It features a Real Time Clock (RTC) that allows for programming defrost cycles, and a “Day and Night” function for energy saving. The controller also has four probe inputs for temperature monitoring and control. The RS-485 serial output enables connection to a MODBUS-RTU compatible network, and a Hot Key receptacle allows for programming.
advertisement
026-1210 Rev 0 09-FEB-2011
XR75CX Digital Controller for Medium-Low
Temperature Refrigeration Applications
Installation and Operation Manual
XR75CX Digital Controller for Medium-Low
Temperature Refrigeration Applications
Installation and Operation Manual
Retail Solutions
3240 Town Point Drive NW Suite 100
Kennesaw, GA 30144 USA
Phone: 770-425-2724
Fax: 770-425-9319
ALL RIGHTS RESERVED.
The information contained in this manual has been carefully checked and is believed to be accurate. However, Com-
puter Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event will
Computer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resulting
from any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continued
product development, Computer Process Controls, Inc. reserves the right to make improvements to this manual, and the
products described herein, at any time without notice or obligation.
3240 Town Point Drive NW Suite 100
Kennesaw, GA 30144 USA
Phone: 770-425-2724
Fax: 770-425-9319
ALL RIGHTS RESERVED.
The information contained in this manual has been carefully checked and is believed to be accurate. However, Com-
puter Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event will
Computer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resulting
from any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continued
product development, Computer Process Controls, Inc. reserves the right to make improvements to this manual, and the
products described herein, at any time without notice or obligation.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
advertisement
Key Features
- Microprocessor-based control
- Four relays for compressor, fan, defrost, and auxiliary functions
- Real Time Clock (RTC)
- Energy saving “Day and Night” function
- Four probe inputs for temperature monitoring and control
- RS-485 serial output for MODBUS-RTU connection
- Hot Key receptacle for programming
Related manuals
Frequently Answers and Questions
What kind of loads can the XR75CX control?
The XR75CX has four relays which can control a compressor, fans, defrost, and either a light or an auxiliary function.
What is the purpose of the Real Time Clock (RTC) feature?
The RTC allows for programming defrost cycles, including separate schedules for weekdays and holidays.
How can I connect the XR75CX to a network?
The XR75CX has an RS-485 serial output that is compatible with MODBUS-RTU networks.
What is the Hot Key receptacle used for?
The Hot Key receptacle allows for programming the XR75CX using a dedicated programming keyboard.
What is the purpose of the “Day and Night” function?
The “Day and Night” function allows you to set different temperature setpoints for daytime and nighttime, saving energy.
advertisement