16 Option description and instructions
Wiring
The POUS switch and indication lamp for the POUS function are not factory-installed. The
user must install and wire them to the inverter units on site.
There is an extension terminal block [X68] for the connections to the FSO module inside
the inverter unit cabinet. This terminal block is the user interface. The FSO module
connectors [X113] and [X114] have been wired to [X68]. This table shows the connections
between the extension terminal block and the FSO module.
There is a separate user interface (terminal block [X957]) inside the cabinet.
ABB installs the FSO module and the wirings between the FSO modules and the inverter
units at the factory.
The FSO module has double terminals for the connection of the POUS switch.Wire the
POUS switch to the appropriate terminals in the extension terminal block [X68]. See the
table above, section
on page
and the circuit diagrams of
the delivery.Obey these general rules.
1. Use only double-contact switches. We recommend approved and lockable switches.
2. Connect the switch with two conductors (two-channel connection).
Note:
Keep the channels separate. If you use only one channel, or if the first and
second channels are connected together (for example, in a chain), the cross-fault
detection of the FSO module trips and activates the STO function of the inverter unit.
Note
: If you change the input and the parameter settings in the FSO module into a
one-channel implementation, it affects the safety integrity of the safety function. The
safety data that ABB has calculated for the function is not valid.
3. Use a shielded, twisted pair cable. We recommend a double-shielded cable and gold-
plated contacts in the POUS switch.
4. The maximum allowed cable length between the inverter unit and the POUS switch
(for the whole loop)
is 250 m (820 ft).
5. Obey the general control cable installation instructions given in the inverter unit
hardware manual.
If you use a POUS indication lamp, wire it to the appropriate terminals in the extension
terminal block [X68]. We recommend an LED indication lamp. The maximum allowed
cable length between the inverter unit and the indication lamp (for the whole loop)
is 250 m
(820 ft). See the table above, section
on page
and the
circuit diagrams of the delivery.
FSO
X113
:
X68
FSO
X114:
X68
1
3
1
17
2
4
2
18
3
5
3
19
4
6
4
20
5
7
5
21
6
8,9
6
22, 23
7
10
7
24
8
11
8
25
9
12
9
26
10
13, 14, 15, 16
10
27, 28, 29, 30
