Owner's manual

5 OPERATION
22
LS 6500
www.krohne.com 03/2013 - 4000649103 - MA LS 6500 R03 en
Operation
5.1 Start-up
Before connecting to power, please check that the system has been correctly installed.
This includes:
• The device must be mechanically safe and mounted in compliance with the regulations.
• Check the leak-tightness at the sleeve.
• Make sure that the cable gland is tight or, as the case may be, the M12 plug is properly
screwed down.
• The power connections must have been made in compliance with the regulations.
• Check that the electrical operating data of the power supply are correct.
• Switching on the power.
i Check for correct switching function.
5.2 Fault diagnosis and corrective action
Fault Cause Action / elimination
LED not "on" Sensor cap not in contact with
liquid product
-
Supply voltage < 12 V, permittivity
too low
Measure voltage at Pin 1 and 2
(M12: pin 1 and 3)
No switching output Cable break Check continuity of cables
Incorrect polarity of supply Reverse terminals 1 and 2 (M12:
terminal 1 and 3)
Short-circuit Check wiring
.book Page 22 Tuesday, March 12, 2013 11:33 AM