MAYSER 1006747, Руководство по эксплуатации, Страница: 19 / 23

121022 v1.02-RiA Operating instructions SG-RS 309-2 Page 19/23
Maintenance and cleaning
Fault indication Possible cause Remedy
Green “P” LED not light-
ing up
No or incorrect supply voltage 1. Check supply voltage, compare with
type plate
2. Check terminal assignment
If supply voltage is correctly connect-
ed: control unit is faulty
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Replace control unit
Yellow “S1” LED is lit up Sensor 1 is faulty 1. Measure resistance at sensor 1: target
value = 8k2 ±5% or 10k ±5%
2. Actual value ≠ target value: sensor is
faulty
3. Replace sensor
Control unit is faulty 1. Connect an 8k2 or 10k resistor to
terminals Y1, Y2
2. Fault not rectified: replace control unit
Yellow “S2” LED is lit up Sensor 2 is faulty 1. Measure resistance at sensor 2: target
value = 8k2 ±5% or 10k ±5%
2. Actual value ≠ target value: sensor is
faulty
3. Replace sensor
Control unit is faulty 1. Connect an 8k2 or 10k resistor to
terminals Y3, Y4
2. Fault not rectified: replace control unit
Cleaning
Ä
Clean the outside of the enclosure with a dry cloth.
Maintenance and cleaning
Maintenance
The control unit is maintenance-free.
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Repeat the functional test monthly.
Prerequisites:
• The sensor system has passed the latest test (see sensor installation instruc-
tions).
• The control unit is connected to the supply voltage and sensor.
• No sensor is activated.
Troubleshooting and remedies