18
19
10. Error diagnosis
Only the
green
LED may illuminate if the supply voltage has been correctly connected. If one of the
red
LEDs
illuminate, there is an error in the system which can be pinpointed with the aid of the LED.
LED
Error
Error correction
LEDs are not
illuminated
The supply voltage is missing, too low
or has been connected incorrectly
Check connections and supply voltage:
- 24 V AC/DC at terminals
8 9
Tolerance range: ±10%
A single red LED
is illuminated
safety contact edge(s) not connected,
connected incorrectly or faulty
- Check the connections of the corresponding
safety contact edge (squeezed or brittle
supply lines, etc.)
- Check safety contact edge(s)*
One of the safety contact edge
connections is not being used
Any safety contact edge connections that are
not being used must be permanently bridged
using one of the supplied 8.2 kΩ resistors
Both of the red
Transmit
LEDs
are illuminated
The transmission line is faulty or has
been installed incorrectly
- Observe the mech. assembly instructions
(INDUS safety transmission system)
- Check transmission coil cores for abrasion.
- Check cable loop; make certain that both
transmission coil cores are in the cable loop
- Check cable / gate leaf contact points.
- Check supply voltage**
safety contact edge(s) not connected,
connected incorrectly or faulty
- Check the connections of the corresponding
safety contact edge (squeezed or brittle
supply lines, etc.)
- Check safety contact edge(s)*
* If the error is not in the wiring, the function of the electronics can be tested by connecting an 8.2 kΩ
resistor to all safety contact edge inputs on the INDUS rail 71-242 (INDUS rai 71-942) electronic
evaluation system (terminals
3
,
10
and terminals
3
,
11
) and to the
travelling
coil core (connections
O
and
C
). If the electronics work perfectly after performing the test, the safety contact edges must be
checked using an ohmmeter. To do this, the respective connection on the safety contact edge for the
electronic evaluation system or for the
travelling
coil core must be disconnected and connected to an
ohmmeter.
The resistance must be 8.2 kΩ ±500 Ω when the safety contact edge is inactive and must not exceed 500 Ω
when it is active.
** If both of the LEDs for the travelling safety contact edges (
Transmit Opening
and
Transmit Closing
)
illuminate, there is an error in the inductive signal transmission system. The most frequent causes of
these errors are bad coil core connections, incorrectly installed cable system components (see INDUS
rail safety transmission system assembly instructions) or an impermissibly low supply voltage.
The maximum resistance value of the cable loop must not exceed 3 Ω . The resistance value can be
measured by disconnecting the steel cable from the ground terminal and then measuring the resistance
between the end of the steel cable and ground terminal.
English
INDUS rail 71-242 + INDUS rail 71-942
Inductive signal transmission system