Indications; Troubleshooting - Stahl 9170 Serie Betriebsanleitung

8.2

Indications

LEDs on the device indicate the operating condition of the device and the line fault states
(also refer to the "Device design" chapter).
LED Colour LED "ON"
"PWR" LED Green Device is supplied with auxiliary
"LF1" LED *) Red
"LF2" LED *) Red
"OUT1" LED Yellow Output is connected
"OUT2" LED Yellow Output is connected
*) Activation of line fault detection for channel 1 or 2 using the DIP switch "LF1" or "LF2"
8.3

Troubleshooting

Error
"PWR" LED is off
Line fault "LF" LED
is lit permanently
Still no change of the
switching state at the
output in spite of
lighting up of the
yellow "OUT" LED
High switching
frequencies are not
transmitted
If the error cannot be eliminated using the specified procedures:
 Contact R. STAHL Schaltgeräte GmbH.
For rapid processing, have the following information ready:
• Type and serial number of the device
• Purchase information
• Error description
• Intended use (in particular, input and output wiring)
200089 / 9170612310
2020-04-30·BA00·III·en·09
power
Line fault in signal of channel 1
Line fault in signal of channel 2
Cause of error
• Auxiliary power failure
• Defective device fuse
• Polarity reversal of the
auxiliary power source
• Incorrect connection of the
switching element.
• Switching element does not
function according to
NAMUR.
Swapping the pluggable terminals Insert the pluggable terminals into
The version of the switching
repeater with an electronic output
has been optimised for use with
active I/O cards.
If passive inputs are used,
the potential for the generation of
High Level is missing.
LED "OFF"
Device is not in operation,
power supply not available
No line fault in signal of channel 1
No line fault in signal of channel 2
Output is disabled
Output is disabled
Troubleshooting
• Monitor the polarity of the
auxiliary power supply.
• Monitor the wiring of the
auxiliary power supply.
• If the fuse is defective,
have the device repaired.
• Ensure correct wiring of the
switching element.
• Connect the de-energised
contacts to additional
resistors according to
the chapter "Project
Engineering".
the device connection intended for
this purpose.
The High Level is generated by
means of an external circuitry with
a resistor for the supply voltage
(e.g. +5 V).
Switching repeater
Series 9170/.1
Operation
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