ComBricks User Manual v6.4.0 | January 18| © PROCENTEC 34/219
3.9 Power Supply
The Head Station contains two 3-pin screw type power connectors on the bottom. If power redundancy is NOT
required, either one can be used.
The layout is as follows (when the wires are pointing down):
1 = - (left)
2 = + (middle)
3 = SH (right)
The power supply must comply with the following specifications:
• Voltage: 10.8 .. 26.4 VDC
• Current: Min. 800 mA
• Wire diameter: < 2.5 mm
2
3.9.1 Procedure
To connect the 24 VDC supply to the 3-pin screw-type terminal, proceed as follows:
To connect the power supply a 3 mm screwdriver is required.
3.9.2 Testing and commissioning
If the power is switched ON it can be diagnosed by the following indicator procedure:
• All LEDs on the Head Station should be shortly ON.
• The RDY LED should be shortly Blinking.
• The SD LED should be ON (if an SD card is inserted).
• The RDY LED should be ON (also on other inserted Modules).
STEP 1: Strip the insulation of the conductors of the 24 VDC power supply.
STEP 2: Secure the conductors in the screw-type terminal.
STEP 3: Insert the entire connector block in the power socket (see Fig. 23).
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