4B Digimatic DML4W, Operation Manual

Page: 15 / 20

PAGE 15
TESTING AND COMMISSIONING
1. Check that the unit is correctly installed (see standard wiring diagram).
2. After going through the sensor calibration steps, the green LED should be “ON”.
3. Introduce material to the Digimatic. If calibrated correctly, the Digimatic will activate when material
has been detected. Machinery shut down will depend on your specific monitoring setup. 4B
recommends an instant shutdown when maximum fill level or a plug condition has been detected.
WARNING
If the system does not immediately shutdown as expected or alarm as required, then remove the
machine from service until the problem has been diagnosed and corrected.
TROUBLESHOOTING GUIDE
FAULT REMEDY
Readings fluctuate
when the weather
changes. Ground the Digimatic to the bin using the unit ground connection (Image C).
Relays operate
backwards.
Verify that the “High/Low” switch is in the correct position (D - Image D).
Relay activates
sporadically.
Set the timer delay to 1 or 2 seconds to ignore sporadic material issues.
Manufactured by SYNATEL Instrumentation Limited, WS11 9TB, UK