I/O Module Descriptions
3500/42 Operation and Maintenance
78
4.3
Proximitor/Seismic Internal Barrier I/O Module
(Internal Termination)
The Internal Barrier I/O modules requires that each transducer be connected to the Barrier
I/O module individually. This module provides four channels of intrinsically safe signal
conditioning for Proximitor and/or Seismic transducers and has two internally mounted
zener barrier modules, one for each pair of transducer channels. There are three types of
Internal Barrier I/O Module; the first variant provides four channels for Proximitor
transducers only, the second provides two channels for Proximitor transducers and two for
Seismic transducers, and the third provides four channels for Seismic transducers only. A
3500 Earthing Module is required for systems that use Internal Barrier I/O Modules to
provide an intrinsically safe earth connection for intrinsically safe applications. Refer to the
Rack Installation and Maintenance Manual for system requirements when using Internal
Barrier I/O Modules.
Connect the wires from
Proximitor transducers to
the Barrier I/O Module.
Connect the wires
from Seismic
transducers to the
Barrier I/O Module.
INHB/RET:
Connect to an
external switch.
Used to inhibit all
non-primary
Alert/Alarm 1
functions for all
four channels.
COM/REC:
Connect each
channel of the I/O
module to a
recorder.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
