Start Up And Functional Testing; Pre-Start; Safety Inspection; Start Up Check List - Danfoss vlt fcd 302 Operating Instructions Manual

Start Up and Functional Tes...

3 Start Up and Functional Testing

3.1 Pre-start

3 3

3.1.1 Safety Inspection

W W ARNING
HIGH VOLTAGE
If input and output connections have been connected
improperly, there is risk for high voltage on these terminals.
For initial start up, 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 there is no voltage on input terminals L1 (91),
L2 (92), and L3 (93), phase-to-phase and phase-to
ground.
3. Verify 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 will be needed to
program motor nameplate data later on.
9. Confirm that the supply voltage matches voltage of
frequency converter and motor.
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VLT Decentral Drive FCD 302 Operating Instructions

3.1.2 Start Up Check List

CAUTION
Before applying power to the unit, inspect the entire instal-
lation as detailed in the table below.
Inspect for
Auxiliary
equipment
Cable routing
Control wiring
EMC consider-
ations
Environmental
considerations
Cooling
clearance
Fusing and
circuit
breakers
MG.04.F2.02 - VLT is a registered Danfoss trademark
Description
•
Look for auxiliary equipment,
switches, disconnects, or input fuses/
circuit breakers that may reside on
input power side of frequency
converter or output side to motor.
Examine their operational readiness
and ensure they are ready in all
respects for operation at full speed.
•
Check function and installation of
any sensors used for feedback to
frequency converter
•
Remove power factor correction caps
on motor(s), if present
Ensure that input power, motor wiring
and control wiring are separated or in
three separate metallic conduits for high
frequency noise isolation.
•
Check for broken or damaged wires
and connections
•
Check the voltage source of the
signals, if necessary
•
The use of shielded cable or twisted
pair is recommended. Ensure the
shield is terminated correctly at both
ends.
Check for proper installation with regard
to electromagnetic compatibility.
See equipment label for the maximum
ambient operating temperature limits.
Temperature is not to exceed 40 C
(104 F). Humidity levels must be 5-95%
non-condensing.
Units require top and bottom clearance
adequate to ensure proper air flow for
cooling.
Check that all fuses are inserted firmly
and in operational condition and that all
circuit breakers are in the open position.
Check for proper fusing or circuit
breakers.