Stahl 9180, Operating Instruction

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English Operating Instructions
Resistance Isolator Type 9180 21
8 Maintenance and repair
It is recommended that all repairs to our devices be carried out by R. STAHL. In
exceptional cases, repair may be performed by approved third-parties.
The devices are maintenance-free.
Troubleshooting chart:
Error detection Malfunction cause(s) Troubleshooting
“PWR” LED not lit
Power supply failure or device
fuse is defective Check power supply.
If device fuse is defective, send device in for repair.
Output signals faulty Sensor is incorrectly connected
Incorrect DIP switch setting
DIP switch setting is not applied
by the device Check connections (see 7.1)
Set DIP switch as per 7.2
In order to activate a new set-up of circuit type you have
to switch of the power supply for a short moment.
(Power on reset)!
Output signals for
2-wire circuits faulty Line balancing has not been
performed Please perform the line balancing as described above.
Line balancing does not
work Switching of the DIP switch has
not been performed within 10s Please repeat the line balancing.
Green "PWR" LED blinks Line balancing has been
performed ---
Red "LF" LED is lit Line error in the input Check connections (see 7.1)
Red "LF" LED blinks Out of measuring range Configure an appropriate measuring range
If the procedure described above does not obtain the desired result, 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(s),

Description of the error,

Application description (particularly the configuration of the
input/output circuitry)
9 Accessories and spare parts
Use only original accessories and spare parts from R. STAHL Schaltgeräte GmbH.