Electrical Connection; Symbols Used In This Document; Símbolos Utilizados En Este Documento - Grundfos CIU Installation And Operating Instructions Manual

4.3 Electrical connection

The electrical connection should be carried out by
an authorised electrician in accordance with local
regulations.
Warning
Before beginning the electrical
connection, make sure that the
electricity supply has been switched off
and that it cannot be accidentally
switched on.
Warning
Applies to supply voltages above
30 V / 60 VDC:
RMS
The installation must incorporate a
circuit breaker in order to switch off the
mains supply. It must be close to the
CIU unit and easily accessible for the
operator. It must be marked as circuit
breaker for the CIU unit. The circuit
breaker must be according to
IEC 60947-1 and IEC 60947-3.
Warning
Branch circuit protection:
The CIU unit must be protected by a
branch circuit fuse in accordance with
local and national regulations.
Supply voltage to the CIU unit:
Caution
24-240 VAC/VDC – 10 %/+ 15 %.
If the CIU unit is mounted on a DIN rail
WITHOUT earth connection or on a wall,
Note
it must be connected to earth via the
earth terminal. See fig. 4, pos. 4.
To ensure a stable and reliable
communication, the cable screen for
Caution
GENIbus connection must always be
connected to the earth clamp. See
fig. 5, pos. 4.
4.3.1 Connection of power supply and GENIbus
Warning
The CIU unit and GENIbus must only be
connected to SELV or SELV-E circuits.
1. Remove the cover.
2. Connect the supply cable to the CIU unit
(fig. 4, pos. 1, 2 and 3).
3. Loosen the earth clamp (fig. 5, pos. 4).
4. Connect the conductors to terminals A, Y and B
(fig. 5, pos. 1, 2 and 3).
5. Connect the cable screen under the earth clamp,
and tighten the earth clamp (fig. 5, pos. 4).
6. Connect the network cable to the CIM module.
See the installation and operating instructions for
the CIM module in question.
7. Fit the cover.
10
4
Fig. 4 Electrical connection and earthing
Pos. Description
1 Protective earth terminal
2 Neutral terminal
3 Phase terminal
4 Earth terminal
4 1 2 3
Fig. 5 GENIbus connection
Pos. Designation
1 A
2 Y
3 B
4 –
1 2 3
Description
GENIbus terminal A
(positive data signal)
GENIbus terminal Y
GENIbus terminal B
(negative data signal)
Earth clamp