INFO
Mount each current transformer and connect it to the controller terminals so that each measurement current flows through
the controller in the correct direction. Incorrect mounting and wiring will result in incorrect current measurements. See the
controller wiring diagrams for the correct mounting direction and wiring.
DANGER!
Do not connect or disconnect any current transformer (CT) while there is current in the line. If a CT is disconnected when
there is current in the line, a high voltage is generated across the secondary of the CT. This can cause arcing, personal
injury or death, or damage to the controller.
DANGER!
The current measurement terminal block MUST always be screwed onto the module. If for some reason the terminal block
is unscrewed, secure it using a 0.25 N·m (2.2 lb-in) torque screwdriver with a 3.5 mm (0.14 in) flat-bladed bit.
6.4 Input output module IOM3.1
6.4.1 IOM3.1 terminal overview
Terminal
Symbol Name Type
1 Normally open
Relay output (250 V AC or 30 V DC, and 6 A)
2 Common
3 Normally closed
4 Normally open
5 Common
6 Normally closed
7 Normally open
8 Common
9 Normally closed
10 Normally open
11 Common
12 Normally closed
13 Bi-directional input
Digital input (OFF: 0 to 2 V DC, ON: 8 to 36 V DC, Impedance: 4.7 kΩ)
14 Bi-directional input
15 Bi-directional input
16 Bi-directional input
17 Bi-directional input
18 Bi-directional input
19 Bi-directional input
20 Bi-directional input
21 Bi-directional input
22 Bi-directional input
23 COM Common Common for digital input terminals 13 to 22
INSTALLATION INSTRUCTIONS 4189340909I UK Page 64 of 144
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