Hardy HI 1756-2WS - Manual (Page 10)

HI 1756-WS WEIGH SCALE MODULE
1-2
Chapter 4 - Provides hardware configuration instruc-
tions, including dip switch and jumper settings.
Chapter 5 - Provides firmware/software setup proce-
dures needed to operate and calibrate the instrument.
Chapter 6 - Provides calibration instructions.
Chapter 7 - Provides operating procedures.
Chapter 8 - Provides troubleshooting procedures.
Description Both the HI 1756-WS and HI 1756-2WS Weigh Scale
Modules are self-contained, microprocessor-based
ControlLogix I/O modules with control inputs and
outputs that plug into the backplane of an Allen-Brad-
ley ControLogix
®
programmable controller and/or
Remote Rack. The remote rack module connects to
the local chassis via a ControlNet link.
NOTE: The Allen-Bradley Control/Logix
®
manuals contain
useful information about their products that is not
provided in this manual. This manual assumes that
users have a basic understanding of process control
and can interpret ladder logic instructions as needed
to generate the electronic signals that control their
application(s).
The HI 1756-WS Weigh Scale Module Series A is
configured for single-channel operation while the HI
1756-2WS Weigh Scale Module Series A is config-
ured for dual-channel operation. Both modules can be
used for a wide variety of process weighing applica-
tions such as batching, blending, filling/dispensing,
check weighing, force measurement, level by weight
and weight rate monitoring.
The analog-to-digital converter in the weigh module
controller updates fifty times per second and is capa-
ble of 8,388,608 counts of display resolution. This is
enough to provide accurate weight measurement and
control and to tolerate large “dead” loads or over siz-
ing of load cells/sensors. To calibrate the module you
can simply push “The Button” to effect a C2 elec-
tronic calibration. C2, Hard (Traditional calibration
with weights) is also available for those not using
Hardy Instruments C2 certified load sensors.