Start Up And Functional Testing; Pre-Start; Mg04F302 - Vlt; Safety Inspection - Danfoss VLT FCD 302 Operating Instructions 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.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
®
VLT Decentral Drive FCD 302 Operating Instructions

3.1.2 Start Up Check List

CAUTION
Before applying power to the unit, inspect the entire
installation as detailed in Table 3.1.
Inspect for
Auxiliary
equipment
Cable routing
Control wiring
EMC
considerations
Environmental
considerations
Cooling
clearance
Fusing and
circuit
breakers
®

MG04F302 - VLT

is a registered Danfoss trademark
Description
•
Look for auxiliary equipment,
switches, disconnects, or input
fuses/circuit breakers located on
input power side of frequency
converter, or output side to motor.
Examine their operational readiness
and ensure that 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 that
the shield is terminated correctly at
both ends.
Check for proper installation regarding
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.
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