Technical Data; Service; Service Documentation; Disposal - Grundfos CIM 2 series Montage- Und Betriebsanleitung

CIM 2XX fitted in the CIU 2XX
Fault (LED status)
1. Both LEDs (LED1 and LED2)
remain off when the power
supply is connected.
2. The LED for internal
communication (LED2)
is flashing red.
3. The LED for internal
communication (LED2)
is permanently red.
4. The Modbus LED (LED1)
is permanently red.
5. The Modbus LED (LED1)
is flashing red.

6. Technical data

Transceiver
Cable
Maximum cable length
Transmission speed
Maximum number of
Modbus units per
segment
Protocol
Supply voltage
Storage temperature
Possible cause
a) The CIU 2XX is defective.
a) No internal communication
between the CIU 2XX and the
Grundfos product.
a) The CIU 2XX does not support
the Grundfos product
connected.
a) Fault in the CIM 2XX Modbus
configuration.
a) Fault in the Modbus
communication (fault in parity
or cyclic redundancy check).
RS-485
Screened, twisted-pair
2
Min. 0.25 mm
Min. 23 AWG
1200 m
4000 ft
1200 - 38400 bits/s
32
Modbus RTU
5 VDC ± 5 %,
I 200 mA
max.
–25 °C to +70 °C
–13 °F to +158 °F
Remedy
Replace the CIU 2XX.
• Check the cable connection
between the Grundfos product
and the CIU 2XX.
• Check that the individual
conductors have been fitted
correctly.
• Check the power supply to the
Grundfos product.
Contact the nearest Grundfos
company.
• Check the transmission speed
(switches SW4 and SW5). If the
switches are set to "software-
defined", an invalid value may
have been set via Modbus.
Try one of the preselected
transmission speeds, e.g.
19200 bits/s.
• Check that the Modbus address
(switches SW6 and SW7) has a
valid value [1-247].
• Check the transmission speed
(switches SW4 and SW5).
See section 3.5.
• Check the parity setting (switch
SW3). See section 3.4.
• Check the cable connection
between the CIM 2XX and the
Modbus network.
• Check the termination resistor
settings (switches SW1 and
SW2).
See section 3.3.

7. Service

7.1 Service documentation

Service documentation is available on
www.grundfos.com > International website >
WebCAPS > Service.
If you have any questions, please contact the
nearest Grundfos company or service workshop.

8. Disposal

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
Subject to alterations.
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