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Carel uRack User Manual
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µRack
Cod. CAREL +0
3
P
220
431
rel
.
2.
2 d
a
ted
1
0
/0
2/1
2
40
3 compressors
unit with 2 fan steps and
speed regulator (no alarm relay
output)
F
i
g. 17.c
2 compressors
unit + 3 condenser fans
F
i
g. 17.d
F1
C3
C2
C1
F2
F1
C2
C1
All manuals and user guides at all-guides.com
39
41
Table of Contents
Default Chapter
5
Table of Contents
5
1 Product
7
General Functions
7
Main Characteristics
7
2 User Interface
8
Buttons - Leds - Icons
8
LED Display and Icons
9
3 Starting the Unit
10
Starting for the First Time
10
Unit Configuration
10
Meaning of the Inputs / Outputs
10
4 Compressor Management
13
General Settings
13
Compressor Rotation
13
Compressor Control
13
Number of Compressors Started with Probe 1 Fault
14
Compressors with Different Capacities
15
Manually Enable/Disable the Compressors
15
Special MT-LT Units
16
Compressor Time Settings
16
5 Fan and Inverter Management
18
Fan Management
18
Dead Band Control
18
Inverter Management
19
PWM-PPM Management
21
Floating Condenser Control
21
6 Various Settings
22
Manual Device Operation
22
Compressor Hour Counter and Maintenance Alarm
22
Set Point Variation from Digital Input
22
Type of Refrigerant
22
Auxiliary Probe Management
22
Prevent High Discharge Pressure
23
7 Alarm Management
24
Alarms with Automatic Reset
24
Alarms with Manual Reset
24
Semiautomatic Alarms
24
Alarm Relay
24
Alarms from Analogue Inputs: Temperature Probe and Pressure Transducer
25
8 The Supervisor Network
26
Serial Boards
26
Communication Protocols
26
9 User Interface
26
10 List of Parameters
27
11 On/Off Fan Control Board (Code Convonoff0)
32
12 Pwm to 0 to 10 VDC (or 4 to 20 Ma) Conversion Board for Fans (Code Conv0/10A0)
33
13 Programming Key (Code Psopzkeya0)
33
14 Supervisor Management
33
15 Default Configurations
36
16 Glossary
37
17 Technical Specification
37
18 Product Codes List
38
19 Appendix: Compressor Rack Controller, Examples of Application Diagrams
39
4
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Carel uRack Specifications
General
Brand
Carel
Model
uRack
Category
Control Unit
Language
English
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