PI-B353-001 Rev C
6353-001 I 24 VDC Input Module (True Low)
DATA SHEET
J The Gould B353-001, 24 VDC input Module (True Low) consists of eight independent and isolated input
circuits.
FEATURES
Eight independent 24 VDC inputs
Circuit isolation of 1500 VDC
Field side status indicators
Transient protection
Surge withstand capability in com-
pliance with IEEE 472-1974 and ANSI
C37.90A
Optional Fanning Strip permits module
removal without disturbance to field
wiring
UL listed and CSA certified
Designed for harsh plant floor
environments
J GENERAL DESCRIPTION
The Gould B353-001, 24 VDC Input Module
senses and converts switched input signals
into logic voltage levels used by the Micro
84’” Controller. The logic format for the
module is “true low”. Inputs can be re-
ceived from push buttons, limit and prox-
imity switches, temperature and pressure
switches, as well as other 24V sources.
Eight independent threshold switches
sense inputs from an external power
source.
Each input is electrically isolated by an
optical coupler. An LED indicator con-
nected to the circuit’s field side displays
the true ON/OFF status of the input. Both
IEEE and ANSI standards for surge with-
stand capability (SWC) tests are fully
satisfied. This enables the module and con-
troller to withstand severe voltage tran-
sients prevalent in industrial environments.
J
The module is housed in a light weight,
durable LEXAN@ case. A structural
“chimney” within the module provides flow-
through convection cooling and protection
from moisture build-up. Self-contained
mounting brackets eliminate the need for
special I/O housings. A termination connec-
tor is shipped with the Micro 84 mainframe
to be used when the module is attached at
the extreme right bus location.
User connections are made to a standard
screw terminal strip. This strip is com-
patible with an optional Fanning Strip
(P/N 0212-012) allowing quick module
replacement without disturbing field wiring.
Data bus connections are made with stan-
dard interface connectors. These connec-
tors allow the B353 Input Module to be
placed in any location in the l/O structure
without interference to other module
operation.
-i. GOULD
Electronics
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