Grundfos CU 3 2 Series User Manual

English (GB)
5
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
Page
1. Symbols used in this document
2. Product description
The CU 3X2 is a flexible control unit for control and
monitoring of up to six pumps. In the following
sections two variants will be described:
• CU 352
– Water supply and booster systems
– Heating and air-conditioning systems.
• CU 362
– Wastewater and draining applications.
In the following the two variants will be designated
CU 3X2.
1. Symbols used in this document
5
2. Product description
5
2.1 Indicator lights
6
2.2 Terminals
6
2.3 Potentially explosive environments
6
3. Identification
7
3.1 Type key
7
4. Installation
7
4.1 Location
8
4.2 Enclosure class
8
4.3 Terminals
8
4.4 Cables
8
4.5 Security
8
5. Mechanical installation
9
6. EMC-correct installation
9
6.1 Internal GENIbus connection
10
6.2 Fieldbus communication interface
modules
10
6.3 Fitting the CIM module
10
7. Startup
12
8. Technical data
12
9. Electrical data
12
9.1 Supply voltage
12
9.2 Power consumption
12
9.3 Circuit breaker
12
9.4 Backup fuse
12
9.5 Short-circuit protection
12
9.6 Digital inputs
12
9.7 Analog inputs
12
9.8 Digital outputs (relay outputs)
12
9.9 Conductors
12
9.10 USB port
12
9.11 Battery backup (UPS)
13
9.12 Terminal groups
13
10. Overview of inputs and outputs
14
11. Maintenance
15
12. Service
15
13. Replacing the CU 3X2
15
13.1 Replacing the CIM module
15
14. Dimensions
15
15. Disposal
15
Warning
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local
regulations and accepted codes of good
practice.
Warning
If these safety instructions are not
observed, it may result in personal injury.
Warning
If these instructions are not observed, it
may lead to electric shock with consequent
risk of serious personal injury or death.
Caution
If these safety instructions are not
observed, it may result in malfunction or
damage to the equipment.
Note
Notes or instructions that make the job
easier and ensure safe operation.

Grundfos CU 3 2 Series Specifications

General

Brand	Grundfos
Model	CU 3 2 Series
Category	Control Unit
Language	English