TD 91684GB
16 April 2015 / Ver. G
Installation Guide
T942C and T942C/2 Central Unit
13
1.4.7
Connection of Supply Voltage
1
Add the FP5 Fuse board 1.25A, a very-fast acting (FF) fuse, to the circuit board, in
between connector J03 and the screw terminal.
2
Connect the supply voltage to connector J03 screw 1 and 2.
See the
System Installation
document, chapter Power Supply.
J03
4
5
6
3
1 +12V
2 GND
Supply voltage in
Supply voltage out
to other units
Supply voltage out to
digital inputs/outputs
Figure 14. Connector J03
NOTE: If the digital inputs and outputs are to be used they must be provided with supply
voltage.
3
Supply the digital inputs and outputs with voltage via connections between J03 and
J11/J12 (see drawing below).
J11
J03
4
5
6
3
1 +12V in
2 GND in
6 GND
1 +12V
J12
6 GND
1 +12V
to external
digital outputs
to external
digital inputs
Figure 15. Connection of digital inputs or outputs.
If galvanic isolation is required, remove the connections between J03 J11/J12, and
connect a separate power supply to J11/J12.
