AC Power Control Module
The PCMl AC Power Control Module is designed to switch on and off AC line devices
- motors, contactors, lamps, and solenoids - without disturbing the operation of the
computer or the Series 500.
The PCMl consists of two elements: the KM1 card, which plugs into the Series 500
baseboard, and a remote signal connection unit. All AC connection and switching takes
place at the remote unit, keeping potentially dangerous and noisy AC voltage outside of
the system case. An eight-foot ribbon cable links the remote unit to the plug-in module.
The PCMl provides four channels of AC switching output, with each channel accepting
power signals of I2 to 140V AC, at up to 3A. These channels are switched by solid state
relays (with full optical isolation to 1OOOV
AC), and are short-circuit protected by fuses.