Electrical Installation; Identifying The Input/Output Modules; Channel Connections - ABB C1900 Installation Manual

4 ELECTRICAL INSTALLATION

Warning. Before making any connections, ensure that the
power supply, any high voltage-operated control circuits
and high common mode voltages are switched off.
Note.
• To comply with Underwriter
certification, use flexible conduit for cable routing
(signal and power).
• Always route signal leads and power cables separately,
preferably in earthed metal conduit.
• Screened cable must be used for signal inputs and relay
connections. Connect the screen to the ground stud.
• The terminal blocks can be removed from the main
p.c.b. when making connections. Before removing any
module note its position – see Fig. 4.1.
Information. Use cable appropriate for the load currents.
The terminals accept cables up 12AWG for power supply
connections and 14AWG for all other connections.
1
Unplug
Module
2
Fig. 4.1 Removing Terminal Block Assembly
Laboritories (UL)
Release
Clip
3
Remove Terminal
Block Assembly
4.1 Identifying the Input/Output Modules – Fig. 4.2
To gain access to the modules, open the door and chassis –
see Fig. 2.2. There are six module positions as shown in
Fig. 4.2.

4.2 Channel Connections

are made directly to the terminal block
Channel 1 connections
mounted on the motherboard.
Other Channel connections
fitted in positions 2, 3 or 4 – see Fig. 4.2.
Caution.
The maximum channel to channel voltage (between any 2
channels) must not exceed 500V d.c.
Module Positions 1 2
Channel 1
(Red Pen)
Channel 2
(Green Pen)
See
Note
Channel 3
(Blue Pen)
Channel 4
(Black Pen, Violet Event
Pen or Additional Functions)
Additional
Functions
Additional
Functions
Note. Module positions can also be used for
additional I/O modules (module types 1 and 2) for
use with math functions.
Information. The module type is marked on the
component side of the p.c.b. Refer to Table 2.1 for
the module types and module position options.
Fig. 4.2 Module Positions and Functions
are made to standard I/O modules,
3 4 5 6
Not available on
non-upgradeable
version
5