Grundfos CUE Series Service Instructions

English (GB)
2
English (GB) Service instructions
Original service instructions
CONTENTS
Page
1. General information
1.1 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety
instructions and service instructions.
The hazard statements are structured in the following way:
1.2 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
1. General information
2
1.1 Hazard statements
2
1.2 Notes
2
1.3 About the service instructions
3
1.4 Waiting time during power off
3
2. Type identification
4
2.1 Nameplate
4
2.2 Enclosures
4
2.3 Schematic diagram
5
2.4 Terminals
5
3. Fault finding
7
3.1 Safety regulations
7
3.2 Fault finding procedure
7
3.3 Operating conditions
7
3.4 Fault finding using alarm and warning codes
8
4. Checking the mains components
19
4.1 Checking the rectifier, static test
20
4.2 Checking the IGBTs, static test
21
4.3 Checking the IGBTs, dynamic test
23
4.4 Checking the intermediate voltage
23
4.5 Checking the current sensor
24
4.6 Setting the type code
24
4.7 Fault finding using PC Tool E-Products
25
5. Upgrading the firmware
26
6. Additional information
26
6.1 Special service tools
26
6.2 Tightening torques
26
Read this document before starting service work on
the product. Installation and service work must
comply with local regulations and accepted codes of
good practice.
Observe the safety instructions in the installation and
operating instructions for the product.
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.
Observe these instructions for explosion-proof
products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with
a black graphical symbol, indicates that an action
must not be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20