Hardware reference guide

I/O Modules
642
35013379 11/2011
NOTE: Each output point is protected by an over current sense circuit. When an
over current condition is detected, the point is turned OFF, its LED fault indicator is
turned ON, and the appropriate bit is set in the module fault register.
NOTE: Each group: 3 A, 0 ... 60° C. Per module: 6 A, 0 ... 60° C
Inductance Internal diode protected, no limit on
inductance
Output Response (OFF - ON, ON - OFF) 1.0 ms, resistive
Switching Frequency 50 Hz maximum
Output Protection (internal) Group varistor and individual point over current
sense
Isolation
Field to Bus 2500 Vac for 1 minute
Group-to-Group 1200 Vac for 1 minute
Fault Detection Over current (see note below)
Bus Current Required
6 points ON 375 mA
12 points ON 650 mA
Power Dissipation 1.0 W + 0.77 W x number of points ON
External Power None
Fusing
Internal 4 A (Part # 043511382 or equivalent) See below for
the location of the fuses.
External Not required for this module.
Specifications