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Operating instructions
LCD frequency meter/tachometer
CODIX 136
Description
The battery-powered LCD-frequency meter/ tachometer
Codix 136 can be used for various applications. Typical
uses are for example: tachometer, flow rate meter, pro-
duction measurement per time, etc. They are controlled
by means of dry contacts or voltage pulses. The device
displays the measured frequency in the unit 1/s.
1.1 Preface
Please read this instruction manual carefully
before installation and start-up. Please
observe all warnings and advices, both for
your own safety and for general plant safety.
If the device is not used in accordance with
this instruction manual, then the intended
protection can be impaired.
1.2 Safety Instructions and Warnings
Please use the device only if its technical
condition is perfect. It should be used only
for its intended purpose. Please bear in mind
safety aspects and potential dangers and
adhere to the operating instructions at all
times. The safety standards in force for elec-
trical installations are also to be adhered to.
1.3 Use according to the intended purpose
The application area for this device lies in industrial
processes and controls, in the fields of manufacturing
lines for the metal, wood, plastics, paper, glass, textile
and other like industries with a degree of contamination
of 2. Over voltages at the terminals of the device must
be kept within the limits of Over voltage Category II.
The device is not suitable for use in hazardous areas
and for areas excluded from EN 61010 Part 1. The
device may only be operated indoors as a panel-
mounted device. However, in certain conditions, an out-
door operation is also allowed. It may be operated up to
an altitude of 2,000 m. Use for any purpose over and
beyond this will be deemed as not in accordance with
its intended purpose.
If the device is used to monitor machines or processes
in which, in the event of a failure of the device or an
error made by the operator, there might be the risk of
damaging the machine or causing an accident to the
operators, then it is your responsibility to take the
appropriate safety measures.
1.4 Mounting in a control panel
Mount the device away from heat sources
!
and avoid direct contact with corrosive liquids,
hot steam or similar. When mounting the
device, make sure it is sufficiently cooled.
4
1.5 Mounting instructions
– Remove the mounting clip from the device.
– Insert the device from the front into the panel cut-out,
ensuring the front-panel gasket is correctly seated.
– Slide the fixing clip from the rear onto the housing,
until the spring clamps are under tension and the
upper and lower latching lugs have snapped into
place.
1.6 Electrical installation
This device is powered by an internal battery
– In order to respect the fire protection regu-
!
lations,
8 A/150 VA shall not be exceeded on the
counter in case of a defect!
– Do not wire the terminals of the device that
are not used.
– The pin assignment of the connectors, as
well as the maximum admissible values,
must obligatorily be observed.
– An EMC-compliant installation is a prerequi-
site to reach EC conformity.
1.7 Advice on noise immunity
All connections are protected against external sources
of interference. The installation location should be cho-
sen so that inductive or capacitive interference does not
affect the device or its connecting lines! Interference
(e.g. from switch-mode power supplies, motors, clocked
controllers or contactors) can be reduced by means of
appropriate cable routing and wiring.
1.8 Measures to be taken:
– Use only shielded cable for signal and control lines.
– Connect cable shield at both ends.
– The conductor cross-section of the cables should be
a minimum of 0.14 mm².
– The shield connection to the equipotential bonding
should be as short as possible and with a contact
area as large as possible (low-impedance).
– Only connect the shields to the control panel, if the
latter is also earthed.
– In case of problems due to ground loops, the shield is
to be connected to the reference ground, on the
reception side, with low impedance and, on the emis-
sion side, via a capacitor of approximately 100nF.
– Install the device as far away as possible from noise-
containing cables.
– Avoid routing signal or control cables parallel to
power lines.
– Cables and their insulation should be in accordance
with the intended temperature, voltage and power
ranges. The standards of the respective countries
apply.
DC versions:
Use shielded wires for the counting and control inputs
so as to obtain the maximum EMC resistance or con-
nect not used count inputs to ground (0 V).
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