Revision 10 ControlEdge HC900 Process & Safety Controller User and Installation Manual 25
May 2019
Power Supply
The P01 Power Supply, shown in Figure 10, provides 5 Vdc and 24 Vdc to the backplane connectors in
the local and remote racks. Power Supply is used in each Controller Rack, I/O expansion racks and for all
rack versions (4-slot, 8-slot, and 12-Slot).
P24 power supply provides 5VDC and 24VDC to satisfy the power requirements of a single controller
with I/O, a Remote I/O rack or a Redundant C75 CPU. The 60 watt capacity requires minimal de-rating
of the available ControlEdge HC900 I/O modules.
A tool-secured door covers the voltage connections. An internal non-replaceable fuse limits supply
current under certain fault conditions.
Each power supply includes an internal 5.0-amp fuse that is not field-replaceable. (An external fuse may
be added by the user. See page 23)
Items shown with key numbers:
1. Voltage test points (P01model only)
2. AC/DC Input terminal block
3. Wiring label
4. Grounding lug (Reference; lug is not part of Power Supply; it is staked to bottom of Rack.)
Figure 11 – Power Supply
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