Description
The ABB PHARPSCH100000 power chassis provides mounting slots for two redundant power supply trays, cooling fans, power output terminals, a DIN rail for the DC bus monitoring assembly, and a status output terminal connection.
Cables connect the power terminals for 5 VDC, ±15 VDC, -15 VDC, and 24 VDC to the power bus bar for distribution to the cabinet.
The 48 VDC and 125 VDC terminals are for field I/O devices.
Power supply trays can be removed from the power chassis and replaced while the system is online.
Prior to removing a power supply tray, power to that power supply tray must be switched off at the PEP.
Failure to do so may generate a PFI signal and cause a process upset.
