Helm HM1525 Instruction Manual

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
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
Purpose of This Manual
Who Should Use this Manual
Preface
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
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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