Commissioning; Mg33An22; Safety Instructions; Applying Power - Danfoss VLT AutomationDrive FC 301 Instruction Manual

Commissioning

5 Commissioning

5.1 Safety Instructions

See chapter 2 Safety for general safety instructions.
WARNING
HIGH VOLTAGE!
5 5
Adjustable frequency drives contain high voltage when
connected to AC line input power. Installation, start-up,
and maintenance must be performed by qualified
personnel only. Failure to perform installation, start-up,
and maintenance by qualified personnel could result in
death or serious injury.
Before applying power:
1. Close cover properly.
2. Check that all cable connectors are firmly
tightened.
3. Ensure that input power to the unit is OFF and
locked out. Do not rely on the adjustable
frequency drive disconnect switches for input
power isolation.
4. Verify that there is no voltage on input terminals
L1 (91), L2 (92), and L3 (93), phase-to-phase and
phase-to-ground.
5. Verify that there is no voltage on output
terminals 96 (U), 97 (V), and 98 (W), phase-to-
phase and phase-to-ground.
6. Confirm continuity of the motor by measuring
ohm values on U-V (96-97), V-W (97-98), and W-U
(98-96).
7. Check for proper grounding of the adjustable
frequency drive as well as the motor.
8. Inspect the adjustable frequency drive for loose
connections on terminals.
9. Confirm that the supply voltage matches voltage
of adjustable frequency drive and motor.
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Instruction Manual

5.2 Applying Power

UNINTENDED START!
When the adjustable frequency drive is connected to AC
line power, the motor may start at any time. The
adjustable frequency drive, motor, and any driven
equipment must be in operational readiness. Failure to
be in operational readiness when the adjustable
frequency drive is connected to AC line power could
result in death, serious injury, equipment, or property
damage.
NOTICE!
If the status line at the bottom of the LCP reads AUTO
REMOTE COASTING or Alarm 60 External Interlock is
displayed, this indicates that the unit is ready to operate
but is missing an input signal on terminal 27. See
chapter 4.8.3 Enabling Motor Operation
(Terminal 27) for details.
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
WARNING
1. Confirm that the input voltage is balanced within
3%. If not, correct input voltage imbalance before
proceeding. Repeat this procedure after the
voltage correction.
2. Ensure that optional equipment wiring (if
present) matches the installation application.
3. Ensure that all operator devices are in the OFF
position. Panel doors must be closed or cover
mounted.
4. Apply power to the unit. DO NOT start the
adjustable frequency drive at this time. For units
with a disconnect switch, turn to the ON position
to apply power to the adjustable frequency drive.

MG33AN22