40 Discrete I/O Modules
Publication 1746-IN005A-US-P
Electronically Protected Modules (1746-OB6EI and -
OB16E)
Electronic Protection
The electronic protection of the 1746-OB6EI and -OB16E has been designed to
provide protection for the modules from short circuit and overload current
conditions. The protection is based on a thermal cut-out principle. In the event of
a short circuit or overload current condition on an output channel, that channel
will limit current within milliseconds after its thermal cut-out temperature has
been reached. All other channels continue to operate as directed by the CPU
(processor) module.
IMPORTANT: The modules do not provide protection against reverse polarity
wiring or wiring to AC power sources. Electronic protection is not
intended to replace fuses, circuit breakers, or other code-required
wiring protection devices.
OUTPUT
E
F
U
S
E
OUTPUT
E
F
U
S
E
EFUSE LED
Note: There is no jumper
setting on this module
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