Veeder Root C346 Preset Counter Rate Meter Time Counter Technical Manual

Introduction

The Veeder-Root brand C346 family offers a new level of performance in a 1/16 DIN instrument. Fully programmable to operate as a preset counter, a rate meter (with outputs) or an elapsed time counter. Enhanced fuctionality provides operating modes for batching, background totalizing, and operation as dual counters with master sum. When used as an elapsed time counter, the C346 offers unique functionality for measurement of pulse widths or time between pulses. The C346 is available with an LCD display or the industry's only 6 digit LED display for a 48mm x 48mm product.

A wide variety of features are present that enable use in even the most demanding applications. Inputs can be accepted from both NPN or PNP sensors, dry contacts or encoders, and the input scaling function enables rate and count inputs to be displayed in engineering units. Single and dual preset models are available and each preset offers both a transistor output, which can interface to an external SSR or PLC, and a relay output for directly driving a load. The outputs can be programmed for latching or timed operation.

Even with a high level of functionality, simplicity of operation is still maintained. Important parameters such as the preset and prescale values can be called up quickly with direct access keys while an intuitive button per digit interface enables those values to be changed easily.

The C346 has a NEMA 4 rated faceplate is CE approved, and UL and CUL listed.

Technical Manual 701996-0000

Veeder-Root

C346

brand

Features

• Choice of 6 digit LED or LCD Display

• Button Per-Digit setting and direct access keys for easy opertation

• Field programmable for operation as a preset counter, batch counter, rate meter or elapsed time meter, all with outputs

• Input scale function for display in engineering units

• Add/Subtract, Add/Add and quadrature input modes

• Background count value keeps track of production totals

• 12 - 24 VDC sensor power supply

• Accepts either NPN or PNP inputs

• Relay and transistor outputs for each preset

• Reset via front panel, remote input or automatically

• NEMA 4 rated front panel

Index

Overview

Operation

Programming

General

Construction page 2 Terminal Connections page 2 Panel Mounting page 3

Front Panel page 4 Setup/Oper. Overview page 4 Operation Mode page 5

Basic Functionality page 8 Counter Mode page 8 Rate Meter Mode page 11 Elapsed Time Mode page 13 Dual Register Mode page 16 Batch Counter Mode page 17

Specifications page 19 Ordering Information page 20 Warranty page 20

Preset Counter Rate Meter Time Counter

OVERVIEW

PROGRAMMING

CONSTRUCTION

Compact Design

Standard 1/16 DIN (48mm x 48mm) faceplate

VEEDER-ROOT

346421

E 5 3 1

REAR TERMINAL CONNECTIONS

17 16

4 2

6 4 2

14 13 12 11 10

Main Display

Can be toggled quickly between count value, set value and prescale value. LCD and LED display models available.

Simple Button per Digit Programming

A dedicated button for each of the 6 decades available in the Preset value enables quick changes. The Edit key allows quick access to important parameters.

Front Panel Seal

NEMA 4/IEC IP65 front panel for use in washdown environments

1. Sensor Power Supply - Provides 12 -24 VDC for powering of external sensors up to 50 ma.

Note: For DC powered version, this terminal is used for the positive input of the DC supply

2. Common - For use with sensor power supply, Inputs A, B, & C, and transistor outputs 1 and 2

3. Input A- Programmable as the primary count input or channel A for an encoder input

4. Input B - Programmable to be a directional input, an inhibit input, a decrementing input, an incrementing input, or channel B of an encoder input

35612 7 8 94

Top View of Terminals

Insert wire into opening and turn the screw to tighten the wire clamp.

5. Input C - Programmable for use as a reset input or an inhibit input

6. Transistor Output 1 - Provides a PNP open collector output signal when Preset 1 is activated

7. Relay Output 1 - Normally closed contact

8. Relay Output 1 - Normally open contact

9. Relay Output 1 - Common

10. AC Power Input - Neutral (Not connected for DC powered units)

11. AC Power Input - Line (Not connected for DC powered units)

12. Do Not Connect

13. Transistor Output 2 - Provides a PNP open collector output signal

when Preset 2 is activated

14. Do Not Connect

15. Relay Output 2 - Normally closed contact

16. Relay Output 2 - Normally open contact

17. Relay Output 2 - Common

PANEL MOUNTING

123456

48mm

Release Slot

Side Mounting

VEEDER-ROOT

48mm

Grooves

Dimensions

8mm

Top Mounting

Grooves

Wiring Diagram

Panel Cutout

45mm

93mm

45mm

Make cutout(s) based on the recommended panel opening illustrated in the drawing above.

Place the unit in the panel and slide the included gasket over the rear of the unit. Make sure the unit is positioned squarely against the panel and the gasket is not distorted. Orient the bracket so that the tabs are pointing away from the panel. Slide the bracket over the unit so that the tabs catch in the grooves on the housing, and the bracket is as far forward as possible. Use the panel mount screws to tighten the bracket until there is a secure seal against the gasket.

Please note that there are 4 sets of grooves on the housing so that the bracket can be positioned with the screws on the top or the side.

The electronic components of the instrument can be removed from the housing. To do so the bracket must be loosened and slid back until the release slot on each side is showing. Place a small screw driver in the release slot and gently push forward. Repeat the procedure on the release slot on the other side. The front panel and PCBs should then be able to be pulled forward out of the housing.

OPERATION

PROGRAMMING

FRONT PANEL

LCD Version LED Version

VEEDER-ROOT

1. Main Display

346421

E 5 3 1

6 4 2

1. Main Display: In Operating mode indicates the present count, rate or time value. Can also be quickly toggled through use of the Edit key to indicate the Preset Value or the Prescale Value. In Program mode, this display indicates the parameter code on the left side of the display, and the present parameter value on the right side.

2. Status Displays: Indicates Preset 1 (F1), Preset 2 (F2), Prescale, (PSC) and Program (PRG). In Operating mode, F1 and F2 illuminate to indicate the active output(s). In Program Mode, PRG is illuminated, and either F1, F2 or PSC is lit to indicate which value is being displayed.

2. Status Displays

3. Edit Key

4. Numeric Keys

3. Edit Key: Can be used with the Numeric Keys 1, 2 and 3 in Operation Mode to display Preset 1, Preset 2, and Prescale value respectively. To Enter the Program Mode, depress the Edit key during power-up and continue to hold for 5 secs. Once in Program Mode, the Edit key is used to advance from one parameter to the next.

4. Numeric Keys: Each of the numeric keys is used to increment the value of the respective digit of the Preset(s) or Prescale Value . When pressed simultaneously, the "6" and "4" keys serve as a front panel reset.

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346421

F1 F2 PSC

E 5 3 1

6 4 2

PRG

SETUP/OPERATION OVERVIEW

Mode Decision: Your Series C346 is a powerful control instrument that can be setup to operate in one of 5 modes:

1. Carefully review the following mode descriptions and choose the Basic Functionality that best suits the application per the procedure on page 8.

2. Once the mode is selected, it can be customized per the Setup procedure on the page designated by the table below.

Mode:

Functionality

Follow procedure on page 8

Setup Page Number:

Count Rate Time Dual Register Batch

1 or 2 preset counter. Background

Rate indicator with 2 alarm

limits totalizer feature

3. Since each mode programs and operates in a manner that is specific to its function, the table below lists the appropriate Operation page number.

Operation

Page Number:

1 or 2 preset timer

Two seperate totalizing counters (A, B) with third counter providing sum (A+B)

Preset counter with presettable batch counter. Batch total display

OPERATION

COUNT MODE OPERATION

In Operation Mode, the default display is the Count Value. The Presets and Prescale Value can be accessed by simultaneously pressing the Edit key and the appropriate Numeric key. The Numeric keys are then used to alter the value. It is necessary to then press the Edit key to confirm the change and return to the Count Value display

123456

Edit Preset 1

123456

F1 PRG

351

Change Value

654321

Confirm Change

RATE MODE OPERATION

Edit Preset 2

123456

F2 PRG

351

642

Change Value

654321

F1 PRGF1 PRG

Confirm Change

Edit Prescaler

642

Change Value

F1 PRG

Confirm Change

000

PSC PRG

351

456

Background Total

123456

F1 F2

Return to Count Value

Note: The new value must be confirmed by pressing the Edit key within 15 seconds.

Edit Preset 1

123456

F1 PRG

351

Change Value

654321

Confirm Change

123456

Edit Preset 2

123456

F2 PRG

351

642

Change Value

654321

F1 PRGF1 PRG

Confirm Change

Edit Prescaler

642

Change Value

F1 PRG

Confirm Change

000

PSC PRG

351

456

Note: The new value must be confirmed by pressing the Edit key within 15 seconds.

OPERATION

PROGRAMMING

TIME MODE OPERATION

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Edit Preset 1

123456

F1 PRG

Change Value

654321

Confirm Change

123456

351

642

654321

F1 PRGF1 PRG

DUAL REGISTER MODE OPERATION

Edit Preset 2

F2 PRG

351

Change Value

Confirm Change

Background or Batch Total

123456

F1 F2

Return to Count Value

Note: The new value must be confirmed by pressing the Edit key within 15 seconds.

Sub Total A

123456

F1 PRG

123456

Sub Total B

123456

F2 PRG

Edit Prescaler

642

Change Value

F1 PRG

Confirm Change

000

PSC PRG

351

456

Note: The new value must be confirmed by pressing the Edit key within 15 seconds.

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