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Helm Instrument Company, Inc.
361 West Dussel Drive
Maumee, Ohio 43537 USA
419/ 893-4356
Fax: 419/ 893-1371
www.helminstrument.com
Model HM1525
10/05/2018
Instruction Manual
October, 2018
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HM1525 Weigh Scale Module
Important User
Information
Solid state equipment has operational characteristics differing from those
of electromechanical equipment. “Safety Guidelines for the Application,
Installation and Maintenance of Solid State Controls” (Allen-Bradley
Publication SGI-1.1) describes some important differences between solid
state equipment and hard-wired electromechanical devices. Because of
this difference, and also because of the wide variety of uses for solid
state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment
is acceptable.
In no event will the Allen-Bradley Company or Helm Instrument
Company be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for
illustrative purposes. Because of the many variables and requirements
associated with any particular installation, the Allen-Bradley Company or
Helm Instrument Company cannot assume responsibility or liability for
actual use based on the examples and diagrams.
No patent liability is assumed by Allen-Bradley Company or Helm
Instrument Company with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without
written permission of the Allen-Bradley Company and Helm Instrument
Company is prohibited.
Throughout this manual we use note to make you aware of safety
considerations.
ATTENTION: Identifies information about practices or
circumstances that can lead to property damage.
Identifies information that is especially important for
successful application and understanding of the product.
Attentions help you:
identify a hazard
avoid the hazard
recognize the consequences
ATTENTION: Please check power supply ratings
before proceeding! Each tonnage module
consumes (+24, 50mA +5, 66mA). Be sure to not
overload the power supply.
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HM1525 Weigh Scale Module
Who Should
Use this
Manual
Read this preface to familiarize yourself with the rest of this manual. This
preface covers the following topics:
who should use this manual
the purpose of this manual
terms and abbreviations
conventions used in this manual
Allen-Bradley support
Use this manual if you are responsible for the design, installation, programming,
or maintenance of an automation control system that used Allen-Bradley small
logic controllers.
You should understand electronic process control and be able to interpret the
ladder logic instructions required to generate the electronic signals that control
your application. If you do not, contact your local Allen-Bradley representative for
the proper training before using this product.
This manual is a learning and reference guide for the Helm Weigh Scale Module.
It contains the information you need to install, wire, and use the module.
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HM1525 Weigh Scale Module
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HM1525 Weigh Scale Module
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HM1525 Weigh Scale Module
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HM1525 Weigh Scale Module
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HM1525 Weigh Scale Module
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HM1525 Weigh Scale Module
OUTPUT TAG DESCRIPTIONS
CALMODE
Used for initial installation. All math is disabled, weigh value is not scaled, leaving raw A/D value.
WEIGH MODE
Factory cal setting 100,000 counts = 2MV/V
CLEAR TARE CH1/CH2 Bit
Clears internal tare value for “zero state”.
Useful when troubleshooting load cell wiring or other failures.
TARE CH1/CH2
Sets A/D value to zero.
READ ADTRIM BIT
(HELM Factory setting only).
CH1/CH2 AUTO TUNE BITS
Set to “1” when in auto cal mode
Reference/cal weight on before setting bit
READ SCALE SET BIT
Set to “1” to verify CH1/CH2 scale sets
ENABLE FILTER BITS
Set to “1” to enable 60/50 h2 filter
CH1/CH2 FILTER ON BIT
Set to “1” to enable filter
Set to “0” to disable filter
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