Kübler Codix 716 Bedienungsanleitung Seite 10

ered by the same mains phase, in order not to exceed
the max. voltage of 250 V! The indications of the
Instructions manual must obligatorily be adhered to!
– If the device is equipped with a PE connection, the latter
must obligatorily be connected with a low impedance.
– An EMC-compliant installation is a prerequisite to reach
EC conformity.
1.7 Advice on noise immunity
All connections are protected against external sources of
interference. The installation location should be chosen 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 lat-
ter 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 emission 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.
1.9 Start-up
The following points must be checked before starting up
the device:
1. Does the available supply voltage match the supply
voltage of the device?
2. Is the supply voltage connected to the good termi-
nals of the device?
3. For DC-powered devices, does the supply voltage
respect the polarity?
4. Is the device set and programmed correctly (func-
tion; for counters, max. counting frequency)?
2
1.10 Failure possibilities and causes
No display:
- No power supply.
Impossible to use the keys:
- Key lock input activated
Counter does not count:
- Wrong or reversed wiring of the counting input
- Setting of an input signal not matching the pulse genera-
tor
- Polarity (NPN/PNP) reversed
- Gate input active
- No ground connection between the pulse generator and
the counter
- Maximum counting frequency exceeded
- Signal levels do not reach the switching threshold of the
counter
- Factor too small
Output signal missing:
- Wrong output connection
- No ground connection with the following device
Relay output signal missing:
- Output contacts short-circuited
- Output signal (fugitive signal duration) programmed too
short
- Relay contact defective due to too high load
- Relay current below min. value
If, despite all, your device still does not operate, contact
your local representative or call us directly for technical
support.
When sending your device back, please attach a short
description of the failure, of the programming and of the
connection diagram, in order to allow us to reproduce a
possibly existing defect and to repair your device as quick-
ly as possible.
2. Inputs
2.1 INP A, INP B
Counting inputs. Their function depends on the selected
input mode. The maximum counting frequency of 20 kHz
can be reduced to 30 Hz by programming.
2.2 GATE
Static gate input. Function depending on the programmed
operating mode.
Pulse counter mode: No counting if the input is ON.
Time counter mode:
Counting programmable for input ON (gate.lo) or OFF
(gate.hi). The decimal point of the lowest decade blinks to
indicate that the counting is running.
2.3 RESET
Dynamic reset input. Resets the counter to zero when
counting up, and sets it to the preselected value when
counting down. The reset input can be inhibited in the
Setup.
2.4 KEY
Static key locking input. The presets cannot be modified as
long as this input is ON. It is however still possible to
switch the display between the counting value and the pre-
sets.