Power requirements for CHARMs I/O

Inject field power to CHARMs I/O

The baseplates' injected power bus that supports 24 VDC or 120/230 VAC can be used in installations with many isolated CHARMs. This bus receives power through the CHARM Address Terminal.

  1. Connect two bulk power supplies to a redundancy module to create a redundant common power distribution bus for redundant power to field devices.
  2. Connect the common redundant power distribution bus to the Address Terminal through a 10 A fuse to create a 12 channel, system powered baseplate.
    Figure: Field power injection for CHARMs


  3. Ground the connections as shown in the image.