Veeder-Root Series C628 Technical Manual

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Introduction

Your V eeder-Root brand C628 Elapsed Timer is one model in a family of 1/8 DIN units
which offers breakthrough display technology as well as easy-to-program single-line
parameters. Designed to provide instant visual feedback regarding an application’s key
input value, the C628 not only has a 0.71” high LED display (27% larger than other 1/8
DIN units), but also the ability to change display color based on process status
(programmable parameter in Operation Mode). Easy programming is made possible via a
help function and a secondary legend display.

This manual will guide you through the installation and wiring of your C628 unit with
information on proper panel mounting and rear terminal layout and wiring instructions.
In addition, the instrument’s operation and programming modes are thoroughly
explained. The Operation Mode provides day to day operation and allows editing of
preset values. The Program Mode enables the configuration of various parameters prior
to initial operation. These parameters include those for basic configuration as well as
other settable features which will enhance the functionality and usability of the device.

This manual also provides
information on the C628
Elapsed Timer’s transistor and
relay outputs, product
specifications, and ordering
and warranty procedures.

Technical Manual
702138-0005

Features

• AWESOME 0.71” high digit LED display

• Programmable color change display based on
an event

• Programmable help function and secondary
legend display

• Programmable for single input or cumulative
operation

• Choice of NPN or PNP primary input

• Filter speed settable for 20, 200, or 10,000 Hz

• Standard outputs: one NPN transistor & one
relay

• Front panel reset enable and preset/alarm
lockout

• Optional RS-485 plug in card

• CE approved

Index

Installation

Panel Mounting page 2
Wiring page 3

Operation

Front Panel page 4
Operation Mode page 5

Programming

Program Mode page 6-9

Appendix A

Specifications page 10

General

Notes page 11
Ordering Information page 12
Warranty page 12

Veeder-Root

brand

Series C628
Elapsed Timer

(C628-6XXX)

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INSTALLATION

PANEL MOUNTING

100mm

82344

Mounting Grooves

VEEDER-ROOT

PGM

96mm

OP1
OP2

48mm

RST

92mm +0.5 -0.0

CUTOUT

14 15 16 17 18 19 20

10 11 12

10mm

PANEL

45mm

+0.5 -0.0

SIZE

The instrument can be mounted in a panel with a thickness of up to 6mm. The
cutout(s) should be made based on the recommended panel opening illustrated in the
drawing above.

Insert the unit in the panel through the cutout. Ensure that the
panel gasket is not distorted and the instrument is positioned
squarely against the panel. Slide the mounting clamp into place
on the instrument, as shown to the left, and push it forward until
it is firmly in contact with the rear face of the mounting panel and
the tabs on the bracket arm are seated in the mounting grooves
on the side of the unit.

22

23

24

2

345 678

The electronic components of the instrument can be removed from
the housing after installation without disconnecting the wiring.
To remove the components, grip the side edges of the panel and
pull the instrument forward. Take note of orientation of the unit
for subsequent replacement in the housing.

Bracket Arm

2

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INSTALLATION

WIRING

REAR TERMINAL CONNECTIONS

Power Supply
+ VDC -

RS-485 Comm.
(opt.)

B A

COM

Relay 1

14 15 16 17 18 19 20

22
23

10 11 12

Common

NPN Out 1

Digital In 2

(sec. lockout)

Timing Inputs

Terminal #2 is the connection for Input A, which is the start signal for
time accumulation. The common connection for Input A is Terminal #3.

Digital In 1

(rem. reset)

Aux. Power

(opt.)

Transistor Outputs

Your unit comes standard with an NPN output which is activated by the
preset. Transistor Output 1, which is tied to the Set Value, is on

23 4 5 6 78

24

Input A

Input Common

Terminal #7. Terminal #8 serves as the common connection for the

Control/Digital Inputs

transistor output.

A contact closure or NPN signal can be used to activate preconfigured
functionality. Terminal # 5 is used for a remote reset function, while
Terminal #6 is a security function, that when active, will prohibit entry
into Program Mode. Terminal #8 serves as the common for both of these
inputs.

Relay Outputs

Your unit comes standard with a relay output which is tied to the Set
V alue. Terminal #19 is NC, Terminal #20 is common, and Terminal #21
is NO.

Auxiliary Power Output

A 9 - 15 VDC for powering external sensors up to 125 mA can be
accessed by connecting the positive supply side of the sensor to Terminal
#4 and the negative side to Terminal #8.

Serial Communication

An RS-485 communication board, utilizing ASCII protocol, can be
installed as an option. Terminals #16 & #17 serve as the B and A
connections respectively, while Terminal #18 is connected as the
common.

Input Power

For an AC powered unit, Terminal #13 serves as the line or Hot side
connection for AC powered units and as the positive side for DC powered
units. The neutral side for AC powered units and the negative side for
DC powered units are connected to Terminal #14.

Terminals 1, 9, 10, 11, 12, 15, 22, 23, & 24

are not used.

3

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OPERATION

FRONT PANEL

VEEDER-ROOT

Primary Display

OP1
OP2

Output Indicator

82345

PGM

S

RST

Down Key Scroll Key Program Key Reset Key

Key Functions

Key

Down In Operation Mode: Used in edit operation to decrement

the digit highlighted by the Scroll key.
In Program Mode: Used in Edit Operation to decrement

the digit highlighted by the Scroll key, if the setting is
a numerical value, or present the next in the series of
choices for that parameter.

Scroll

Program In Operation Mode: Used to move between the time

In All modes: Moves the unit into Edit Operation,
which is indicated by the left most digit flashing.
Successive presses of the key are used to move to the
digit to be edited. Wrap around will occur from least
significant digit to most significant digit.

value display & the set value and to enter an edited set
value. Holding the key down for 3 seconds will
cause the unit to enter Program Mode.

In Program Mode: Used to move from one parameter to
the next and enter the edited parameter values.
Holding the key down for 3 seconds will cause the
unit to return to Operation Mode.

Function

Display

Primary In Operation Mode: Default display is the time value.

Secondary In Operation Mode: Indicates numerically if the Set

Output
Indicators

Secondary Display

Display Functions

Function

Can be scrolled using the program key to display the
Set value. If the "Help" function is enabled, this
display will first show the parameter description for 3
seconds (see page 5 for example).

In Program Mode: Displays the value or selection for
the current parameter. If the "Help" function is
enabled, this display will first show the parameter
description for 3 seconds (see page 6 for example).

Value is being viewed on the primary display. This
display is blank when the Time Value is being shown.

In Program Mode: Provides a 1 digit alpha character to
indicate which parameter value is being shown on the
primary display.

In Operation Mode: OP1 illuminates when Output 1 is
active.

In Program Mode: No function.

Reset In Operation Mode: Resets the time value to zero . This

button can be disabled via the "Front Panel Reset
Enable" parameter in Program Mode.

In Program Mode: No function.

Down &
Scroll
together

4

In All modes: Will abort an Edit Operation and return
the preset/parameter to its previous value.