Danfoss VLT FC 103, Руководство по эксплуатации

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4 Start-up and Functional Testing
4.1 Pre-start
4.1.1 Safety Inspection
WARNING
HIGH VOLTAGE
If input and output connections have been connected improperly, there is potential for high voltage on these terminals.
If power leads for multiple motors are improperly run in same conduit, there is potential for leakage current to charge
capacitors within the frequency converter, even when disconnected from mains input.
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For initial start-up, make no assumptions about power components.
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Follow pre-start procedures.
Failure to follow pre-start procedures could result in personal injury or damage to equipment.
1. Switch off the Input power to the unit and ensure that it is locked out. Do not rely on the frequency converter
disconnect switches for input power isolation.
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. Check for proper grounding of the frequency converter as well as the motor.
6. Inspect the frequency converter for loose connections on terminals.
7. Record the following motor-nameplate data
7a Power
7b Voltage
7c Frequency
7d Full load current
7e Nominal speed.
These values are needed to program the motor nameplate data later.
8. Confirm that the supply voltage matches the voltage of the frequency converter and the motor.
CAUTION
Before applying power to the unit, inspect the entire installation as detailed in Table 4.1 . Check mark those items when
completed.
Inspect for Description
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Auxiliary equipment
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Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers on the input
power side of the frequency converter or output side to the motor. Ensure that they are ready for
full speed operation.
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Check function and installation of any sensors used for feedback to the frequency converter.
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Remove power factor correction caps on motors, if present.
Start-up and Functional Tes... Operating Instructions
54 Danfoss A/S © Rev. 05/2014 All rights reserved. MG16J202
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