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Operation
EN
8
Operation
EN
EN
8.1
Operation
EN
Operating principle
EN
The electrostatic charges generated, for instance, during loading and unloading of containers
EN
are eliminated and the circuit is monitored during operation.
The monitoring is based on the evaluation of the contact resistance for equipotential
EN
bonding – starting from the switching repeater – leakage monitor 9170 via the object
EN
to be grounded, the connections on the equipotential bonding rail and back to the
EN
switching repeater – leakage monitor 9170.
One potential-free auxiliary contact per channel enables remote monitoring of the status or
EN
direct control of electrical equipment such as signalling devices.
EN
Operating states
EN
EN
Input
EN
EN
Contact resistance
EN
too high
EN
Contact resistance
EN
OK
EN
8.2
Indications
EN
The LEDs on the device indicate the operating state of the device
EN
(see also the "Device design" chapter).
EN
LED
EN
"PWR" LED Green Device is supplied with auxiliary
EN
"OUT1" LED Yellow Channel 1 relay energised
EN
"OUT2" LED Yellow Channel 2 relay energised
8.3
Troubleshooting
Error
"PWR" LED is off
Still no change of the
switching state at the
output in spite of
lighting up of the
yellow "OUT" LED
14
Switching repeater – Leakage monitor
Type 9170/21-30-10
Signal
) 50 kΩ
( 20 kΩ
Colour LED "ON"
power
Cause of error
• Auxiliary power failure
• Polarity reversal of the
auxiliary power supply
Swapping the pluggable terminals Insert the pluggable terminals into
Output state in case of
"inverted direction of action" (INV1/2)
OFF
Relay not energised
Relay energised
LED "OFF"
Device is not in operation,
power supply not available
Channel 1 relay not energised
Channel 2 relay not energised
Troubleshooting
• Monitor the polarity of the
auxiliary power supply.
• Monitor the wiring of the
auxiliary power supply.
the device connection intended for
this purpose.
ON
Relay energised
Relay not energised
202806 / 9170614310
2020-08-31·BA00·III·en·03
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