Hardy HI 1756-nDF - Manual (Page 5)

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Chapter 1
Chapter 1 Overview
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This manual provides users and service personnel with specifications and procedures for
installing, configuring, operating, maintaining, and troubleshooting the Hardy Process
Solutions HI 1756 nDF Dispenser Filler with WAVERSAVER®, C2®, and
INTEGRATED TECHNICIAN
TM (IT®) diagnostics.
NOTE WAVERSAVER, C2, and IT are registered trademarks of Hardy Process Solutions, Inc.
To ensure good performance and maximum service life, follow all guidelines described
in this manual. Be sure you understand all cautions, warnings, and safety procedures. If
you find that the information in this manual does not provide the help you need, contact
the HI Customer Service Department at:
Phone: (858) 278-2900
FAX: (858) 278-6700
Web Site: www.hardysolutions.com
Support e-mail address: [email protected]
About Hardy Manuals
An overview of each chapter’s contents is listed below:
Chapter One - Provides an overview of HI 1756 nDF capabilities and features
Chapter Two - Provides a overview of HI 1756 nDF specifications
Chapter Three - Describes the steps for installing both the standard and optional HI
1756 nDF equipment, and the HI 215IT series junction box
Chapter Four - Explains how to configure the HI 1756 nDF
Chapter Five - Provides calibration instructions
Chapter Six – Provides troubleshooting procedures for repair of the HI 1756 nDF
HI 1756 nDF Overview
The HI 1756 nDF is a ControlLogix I/O module, which is designed to operate in a local
rack or a remote rack that is connected to the local chassis via a network link.
The module can be inserted and removed under power without disruption of any other
modules in the system (racks). This makes it possible to replace a failed module while
keeping the rest of the system running. Status indicators will be provided on the front of
the module for fault status. A status block will provide information to the processor for
alarming and troubleshooting (IT).
The HI 1756 nDF can be purchased as a single channel (1756 1DF) or dual channel (1756
2DF) module; enabling up to two separate single or multi-cell weight scales to be
monitored at one time. Two relays are assigned to each weigh scale input, and can be
triggered by programmable target weight and preact weight values.
The analog-to-digital converter in the weigh module controller is capable of 8,388,608
counts of resolution which allows the instrument to tolerate large “dead” loads, over
sizing of load cells/sensors, and still have sufficient resolution to provide accurate weight
measurement and control. The analog-to-digital converter can be configured to provide
either 95 or 145 updates per second. The 95 updates per second mode is recommended