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Operating Instructions
7.2
Engineering
Mode of connection for inductive load at the output:
Inductive loads have to be connected with a free wheel
diode in parallel.
We do not recommend using a varistor.
7.3
Settings
Line of action inverted (INV)
Channel 1
Channel 2
*) Default factory setting
Changing settings via DIP switches during operation is also permitted in Zone 2 and on
circuits carrying intrinsically-safe input signals.
8
Maintenance and repair
Repair work on the devices must be performed only by R. STAHL Schaltgeräte GmbH.
The devices are maintenance-free.
If the device does not work properly, please contact your local R. STAHL sales and service
representative. In order to quickly process your request, please provide us with the following
information:
• Type and serial number
• Purchase date
• Description of malfunction
• Application description (particularly the configuration of the input/output circuitry)
9
Accessories and spare parts
Use only original spare parts from R. STAHL Schaltgeräte GmbH.
14
Leakage Monitor - Switching Repeater Type 9170/21-30-10
OFF *)
ON
OFF
ON
OFF
LF1
1
1
INV1
LF2
2
2
INV2
ON
LF1
INV1
LF2
INV2
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