Datakom DKM-411, Руководство пользователя, Страница: 91 / 91

DKM-411 User Manual Rev_01 Firmware V-1.0
K46D03-EN - 91 -
Incorrect active/reactive power and power factor display:

Check voltage and current displays. If incorrect, follow above instructions.
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Current transformers are not connected to correct inputs or some CTs are connected with
reverse polarity. Determine the correct connections of each individual CT in order to obtain
correct KW and power factor display for the related phase.

Please review chapter:
“
AC CURRENT INPUTS
”


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.
RS-485 connection does not work:

Check polarity of A-B terminals.
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Incorrect device address.
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Missing termination resistors. Terminate bus with 120 ohm resistors from both ends.
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Incorrect baud rate selection. Select correct baud rate.

RS-485 port not enabled. Check program parameter.

Device is defective. Send device to the manufacturer for repair.
Programming mode can not be entered:
Enter correct password. Try with “3282” as password.
Some program parameters are skipped:

These parameters require a higher level of password.