Veeder Root A103-002 Totalizer Technical Manual

Introduction

Veeder-Root brand

The A103-002 is a low cost positioning or length measurement display when used with a bidirectional encoder or other input device that produces quadrature signals. Housed in a DIN standard 36mm x 72mm case, its features include an input scale factor which allows its display to be calibrated in meaningful engineering units such as inches, feet, yards or meters.

The 8 digit supertwist LCD display provides easy viewing at a glance. For conditions where ambient light is poor, the display can be backlit by connecting an external DC (10-28 Volt) power supply. Designed primarily for use with encoder phase inputs, this unit can easily determine direction of movement and provide an accurate indication of position.

Powered by either one or two replaceable 3V Lithium batteries, this unique design allows for a new battery to be installed before removing the old one, thereby retaining count total and program data. If two batteries are used simultaneously, the individual expected life doubles to 10 years.

Setup is quick and simple as the two front panel keys are used to scroll through 4 menu choices. A NEMA 4X front panel and noise immunity tested to IEC 801 level 3 makes this unit suitable for harsh environments.

Technical Manual 701954-0003

Revision C

Features

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Large, easy to read 8-digit supertwist LCD with backlighting capability

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3 Volt lithium battery provides long life and eliminates the need for external power

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Accepts input signal from rotary bidirectional encoders or other sources of quadrature signal

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Total value resettable remotely or from the front panel

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Input scale factors for displaying meaningful engineering units

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Option Modules provide added functionality and convenience

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Programmable reset value simplifies position readout.

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Simple menu-driven setup

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NEMA 4X rated front panel for use in washdown environments

Index

Overview

Operation page 2 Terminal Connections page 2

Setup

Installation page 3 Programming page 3

General

Specifications page 4 Warranty page 4

A103-002 Totalizer/ Position Indicator

OVERVIEW

OPERATION

VEEDER-ROOT

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1. Total Display

2. Down Key

1. Total Display: Indicates the present count value, which is equal to the number of pulses received (since the last reset) multiplied by the Count Input Calibrator Value in Program mode.

2. Down Key: When the program input is active this key is used to scroll through the menu items. After a menu item has been chosen for editing, the down key is used to set the value for the currently selected (flashing) digit.

3. Next/Reset Key

3. Next/Reset Key: If the total value is being displayed depressing this key will cause the value to be reset to 0. When the program input is active this key is used to select a menu item for editing (left most digit will begin to flash) and then move to the desired digit to be changed.

REAR TERMINAL CONNECTIONS

Quadrature

Encoder

Remote Reset

Channel A

Ch. A leading Ch. B for up direction

Channel B

Program Enable

1. Common

2. Quadrature Input Channel A - Signal must be capable of sourcing current to the input (see note). 10 kHz Maximum

3. Low Speed Input Channel A - NPN or dry contact inputs up to 30 Hz in quadrature.

4. Remote Reset - Resets count value when switched to common

Note: May be used directly with current sourcing signals such as from PNP or "totem pole" circuit configuration. To connect current sinking devices, provide pull-up resistors between input terminals and a DC source

10 - 28 VDC

5. Front Panel Program Enable - Allows access to program mode when tied to common

6. Low Speed Input B - NPN or dry contact inputs up to 30 Hz in quadrature

7. Quadrature Input Channel B - Signal must be capable of sourcing current to the input (see note). 10 kHz Maximum

8. + DC Supply Input - For backlighting

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