Servicing The Product; Cu 352; Fault Finding; The System Has Stopped And Cannot Restart - Grundfos Control Mpc Montage- Und Betriebsanleitung

Change of network setting
1. Click [>Network admin].
2. Enter the changes.
3. Click [Submit] enable the changes.
Administrator configuration
Change of user name and password
1. Click [>Admin config].
2. Enter new user name if applicable.
3. Click [Apply].
4. Enter existing password.
5. Enter new password.
6. Repeat new password.
7. Click [Apply].
8.7.2 GENIbus
By installing a GENIbus module in CU 352, you can connect the
system to an external network. The connection can take place
via a GENIbus-based network or a network based on another
fieldbus protocol via a gateway. See examples in the section Data
communication. For further information, contact Grundfos.
The gateway may be a Grundfos CIU communication interface or
a third-party gateway. For further information on CIU, see Grundfos
Product Center, or contact Grundfos.
Related information
8.7 Data communication
8.7.3 Network interfaces and services
In the factory default state, the product exposes the following
network interfaces:
Interface
RJ45
In the factory default state, the product exposes the following
services over its network interfaces:
Description
Wired Ethernet connectivity
Interface Network service
RJ45 VNC
8.7.4 Communication interface modules and protocols
The CU 352 controller can be connected to an external
communication network through an add-on Communication
Interface Module (CIM).
The CIM modules must be ordered separately.
Connect the CIM module as described in the installation and
operating instructions supplied with the module.
CIM module Protocols
CIM 150 PROFIBUS DP
CIM 200 Modbus RTU
CIM 290-MA LPWAN GiC
CIM 300 BACnet MS/TP
PROFINET IO,
Modbus TCP,
CIM 500
Ethernet/IP, BACnet
IP
CIM 550 Ethernet GiC

9. Servicing the product

WARNING
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product.
‐
Lock the main switch with a padlock to ensure that the
power supply cannot be accidentally switched on.

9.1 CU 352

CU 352 is maintenance-free. Keep the unit clean and dry, and
protect it against direct sunlight. For ambient temperature, see the
section on Technical data.

10. Fault finding

WARNING
Electric shock
Death or serious personal injury
‐
Switch off the power supply for at least five minutes
before you start any work on the product.
‐
Make sure that the power supply cannot be
accidentally switched on.

10.1 The system has stopped and cannot restart.

Cause
The primary sensor is
defective.
The cable is broken or short-
circuited.
The power supply is
disconnected.
CU 352 is defective.
The power supply is
disconnected.
The main switch is switched off. •
The main switch is defective.
The motor protection is
activated.
Description
VNC server for
remote HMI
Product number
96824793
96824796
92865300
96893770
98301408
92546689
Remedy
• Replace the sensor.
• Transmitters with 0-20 mA or
4-20 mA output signals are
monitored by the system.
• Repair or replace the cable.
• Connect the power supply.
• Contact Grundfos.
• Connect the power supply.
Switch on the main switch.
• Replace the main switch.
• Contact Grundfos.
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