Grundfos CU 361 - Fieldbus Communication Interface Modules; Fitting the CIM Module; Internal Genibus Connection to the IO 351 and IO 111

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6.1 Internal GENIbus connection to the IO 351 and IO 111
The CU 361, IO 351 and IO 111 communicate via GENIbus.
Fig. 9 GENIbus connection to the IO 351 and IO 111* (* optional)
6.2 Fieldbus communication interface
modules
The CU 361 can be connected to an external
communication network via an add-on fieldbus
CIM module.
A CIM module is a Communication Interface Module.
The following CIM modules are available*:
• CIM 050 RS-485
• CIM 200 Modbus
• CIM 250 GSM
• CIM 270 GRM (Grundfos Remote Management)
* More modules will be available in the future.
The CIM modules must be ordered separately.
The connection of the CIM module is described in
the installation and operating instructions supplied
with the module.
6.3 Fitting the CIM module
The CIM module must be fitted by authorised
personnel.
Fit the CIM module as follows:
1. Remove the screw in the back cover of the
CU 361. See fig. 10.
Fig. 10 Removing the screw holding the back
cover
TM04 2395 2508
IO 351
IO 111
CU 361
Warning
Switch off the power supply to the
CU 361 before fitting the CIM module.
Warning
Electrostatic discharge (ESD) must be
avoided when fitting the CIM module,
for instance by wearing an antistatic
wrist strap as shown in fig. 12.
TM04 2402 2508