Veeder Root Series C342 DC Powered LED Display Technical Manual
Introduction
Your Veeder-Root brand Series C342 panel instrument is powered by an external 12 - 24 VDC supply,
features an 6 digit LED display, and is housed in a ultra compact 1/32 DIN package.
This model has been configured at the factory to perform one of the following functions: Count
Totalizer, Position Indicator, Time Totalizer (Hours:Minutes:Seconds), Time Totalizer (Hours, 1/100
resolution), Tachometer or a PLC message display. There are also several programmable features that
let you select a sinking or sourcing input, a count input filtering speed, and whether or not to enable
the front panel reset.
The following pages of the manual will provide information on proper panel mounting of the device,
terminal layout and wiring instructions, directions on how to access and set the field programmable
features, as well as an overview of the basic operating functions of the unit. Also included are the key
product specification, warranty
procedures and ordering information
should you require additional units.
Models Covered in this Manual
C342-0464 Totalizer: Accumulates
and displays counted pulses. Total can
be reset via front panel button (may be
disabled) or remote reset terminals.
Model available with factory
programmed setting of Setpoint,
Prescale Value, and/or Decimal Position.
C342 -8562 Position Indicator: The
instrument will count in a bi-directional
mode based on the quadrature input from an
encoder. Display range is -99999 to 99999.
C342-1464 Time Totalizer: Accumulates
time in the format Hours:Minutes:Seconds.
Can be reset via front panel button (may be
disabled) or remote reset terminals. Model
available with factory programmed preset
output.
Features
•
Available models include count and time
totalization, rate metering, position
indication and a PLC message display
•
Bright 6 digit LED display provides easy to
read process values
•
Compact 1/32 DIN bezel and 60mm
behind the panel depth save panel space
•
Powered by 12 - 24 VDC, with nonvolitale
RAM for retention of process value and
settings
•
Field programmable for NPN or PNP
signals and for hi-speed (7.5 kHz) or low
speed (30 Hz) filtering
•
Factory programmable features: Setpoint,
Scale Value, Decimal Position, Text
Message
•
IEC IP65 rated front panel for use in
washdown environments
C342-2464 Time Totalizer:
Accumulates time in hours with 1/100
resolution. Can be reset via front panel
button (may be disabled) or remote reset
terminals. Model available with factory
programmed preset output.
C342-3464 Tachometer: Pulses are
sampled for a 6 second period then
displayed as a rate value in units per
minute. A Display Hold input can freeze
the current reading. Model available with
factory programmed setting of Setpoint,
and/or Decimal Position.
C342-4562 Message Display: The
instrument will display alpahumeric
messages based on a digital input from a
PLC Please refer to separate insruction
sheet which provides specific information
on how to interface to a PLC. Model
available with factory programmed Text
Message.
Index
Overview
Installation page 2
Terminal Connections page 2
Setup
Front Panel Operation page 3
Programming page 3
General
Specifications page 4
Ordering Information page 4
Warranty page 4
Technical Manual
702085-0001
Veeder-Root
Series C342
DC Powered
LED Display
brand
1
OVERVIEW
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
INSTALLATION
Dimensions
48 mm
VEEDER-ROOT
24
mm
123456
Recommended Panel Cutout: 22mm (±0.3mm) X 45mm (±0.6mm)
Panel Mounting
Make the recommended panel cutout. Place the included gasket
over the rear of the unit and place the unit in the panel cutout.
Slide the panel mount bracket into place over the unit's rear
allowing the bracket tabs to engage the grooves on the case.
Continue to push forward until the bracket arm fits snugly
against the panel.
8
mm
mm
60
Bracket Arm
Mounting
Grooves
REAR TERMINAL CONNECTIONS
Wiring
Insert wire into the appropriate openings as pictured in the drawing
below. Turn the screws, located on the rear of the terminal block to
tighten the clamp and secure the wire.
1 2 3 4 5 6 7 8
Contact
1 2 3 4 5 6 7 8
PNP
NPN
+
1 2 3 4 5 6 7 8
12 VDC
Common
Channel A
Note: Counting reletive to the encoder shaft
rotation can be reversed by swaping Channel A
and Channel B connections
Signal Input (from switch): Contact closure signals are accumulated for count and tachometer
versions. For timer versions the
timer runs when contact is closed.
See "Programming to select low
speed, NPN mode.
Signal Input (transistor): Signal pulses are accumulated for
count and tachometer versions.
For timer versions, timer runs
when signal is present. See
"Programming" for selection of
PNP or NPN signal
Quadrature Input (Encoder):
For bi-directional counting
connect corresponding encoder outputs to channel
A & B input terminals. The
Channel B
eccoder shield wire should be
connected to earth ground at
the counter.
– (Common)
+ (12 to 24 VDC)
Contact
–
10mA DC Maximum
Load
Contact
NPN
Power Wiring: Connect to 12
- 24 VDC (+20%/-10%) voltage source. Power requirement is 5 mA, Maximum
Remote Reset: the displayed
value will be reset. Signal input is ignored when the Reset
PNP
+
is active. For tachometer versions, this input is not used.
Solid State Output: When the
factory programmed preset
value is reached a PNP output
will be triggered. The output
+
will stay active until a reset
signal is received.
Gate Input: all incoming signals will be ingnored and the
present display value will be
held. For Position Indicator
versions, this input is not used.
NPN
PNP
+
2
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