Datakom DKM-411 - Troubleshooting Guide

DKM-411 User Manual Rev_01 Firmware V-1.0
K46D03-EN - 90 -
No display:
 External fusing for the power supply voltage has tripped. Switch fuse on or replace fuse.
 Incorrect auxiliary supply voltage, check voltage at power supply terminals.
 Incorrect power supply polarity for DC supply versions.
 Device is defective. Send device to the manufacturer for repair.
Incorrect voltage display:
 Measured voltages are not connected. Connect measuring-circuit voltages.
 Important! Ensure the measurement inputs are not overloaded.
 The voltage measuring range has been exceeded. Check device ratings.
 The voltage measuring range has been exceeded by harmonic components. Check harmonics.
 Connect voltage transformer if necessary.
 Incorrect phase connections. Check wiring.
 Voltage transformer ratio incorrectly programmed. Check program parameter and voltage
transformer.
 Device is defective. Send device to the manufacturer for repair.
Incorrect current display:
 Measured currents are not connected. Connect measuring-circuit current inputs.
 Important! Ensure the measurement inputs are not overloaded.
 The current measuring range has been exceeded. Check device ratings.
 The current measuring range has been exceeded by harmonic components. Check harmonics.
 Incorrect phase connections. Check wiring.
 Current transformer ratio incorrectly programmed. Check program parameter and current
transformer ratings.
 Device is defective. Send device to the manufacturer for repair.
Below is a basic list of most often encountered
troubles. More detailed investigation may be
required in some cases.
38. TROUBLESHOOTING GUIDE