Start Up And Functional Testing; Pre-Start; Mg04F402; Safety Inspection - Danfoss VLT Decentral Drive FCD 302 Operating Manual

Start Up and Functional Tes...

3 Start Up and Functional Testing

3.1 Pre-start

3.1.1 Safety Inspection

WARNING
HIGH VOLTAGE
If input and output connections have been connected
improperly, there is risk for high voltage on these
terminals. For initial startup, make no assumptions about
power components. Follow pre-start procedures. Failure
to follow pre-start procedures could result in personal
injury or damage to equipment.
1. Input power to the unit must be OFF and locked
out.
2. Verify that there is no voltage on input terminals
L1 (91), L2 (92), and L3 (93), phase-to-phase and
phase-to ground.
3. Verify that there is no voltage on output
terminals 96 (U), 97(V), and 98 (W), phase-to-
phase and phase-to ground.
4. Confirm continuity of the motor by measuring
ohm values on U-V (96-97), V-W (97-98), and W-U
(98-96).
5. Inspect the frequency converter for loose
connections on terminals.
6. Close the box, mounting the electronic part onto
the installation box.
7. Check for proper grounding of the frequency
converter as well as the motor.
8. Record the following motor-nameplate data:
power, voltage, frequency, full load current, and
nominal speed. These values are required to
program motor nameplate data later on.
9. Confirm that the supply voltage matches voltage
of frequency converter and motor.

MG04F402

Operating Guide
Danfoss A/S © 05/2016 All rights reserved.
3 3
27