Wire Type Rating; Terminal Tightening Torques; Input Line Connection; Motor Wiring - Danfoss VLT FC Series Operating Instructions Manual

Installation

3.4.4 Wire Type Rating

•
Use wiring corresponding to the wiring rating
specifications provided.
•
The wire rating specifications are located on the
3 3
tightening torque and wire rating label inside the
cover of the option panel (see Illustration 3.13).

3.4.5 Terminal Tightening Torques

•
Tighten all connections to the torque specifi-
cations provided.
•
The torque tightening specifications are located
on the tightening torque and wire rating label
inside the cover of the option panel (see
Illustration 3.13.)
Field Conn.
L1, L2, L3 / GND
1T1, 1T2, 1T3 / GND
2T1, 2T2, 2T3 / GND
TB1
Illustration 3.13 Sample Tightening Torque and Wire Rating
Label

3.4.6 Input Line Connection

NOTE
RUN INPUT POWER, MOTOR WIRING AND CONTROL
WIRING IN THREE SEPARATE METALLIC CONDUITS OR
RACEWAYS FOR HIGH FREQUENCY NOISE ISOLATION.
FAILURE TO ISOLATE POWER, MOTOR AND CONTROL
WIRING COULD RESULT IN LESS THAN OPTIMUM DRIVE
AND ASSOCIATED EQUIPMENT PERFORMANCE.
•
Connect 3-phase AC input power wire to
terminals L1, L2, and L3. See the connection
drawing inside the cover of the unit.
•
Depending on the configuration of the
equipment, input power may be connected to a
circuit breaker or input disconnect.
•
Torque terminals in accordance with the
information provided on the connection diagram
inside the cover of the unit.
•
Use with Isolated Input Source. Many utility
power systems are referenced to earth ground.
Although not as common, the input power may
be an isolated source. All drives may be used
with an isolated input source as well as with
ground reference power lines.
26
Option Panel Operating Instructions
Tightening Torque lb-in (N-m) Temperature & Type Rating
Use 75 °C Copper Cond.
25 (2.8) / 25 (2.8)
Use 75 °C Copper Cond.
25 (2.8) / 25 (2.8)
25 (2.8) / 25 (2.8)
Use 75 °C Copper Cond.
7 (0.8)
Use 60 °C Copper Cond.
MG14I102 - VLT

3.4.7 Motor Wiring

WARNING
INDUCED VOLTAGE!
RUN OUTPUT MOTOR CABLES FROM MULTIPLE DRIVES
SEPARATELY. INDUCED VOLTAGE FROM OUTPUT MOTOR
CABLES RUN TOGETHER CAN CHARGE EQUIPMENT
CAPACITORS EVEN WITH THE EQUIPMENT TURNED OFF
AND LOCKED OUT. FAILURE TO RUN OUTPUT MOTOR
CABLES SEPARATELY COULD RESULT IN DEATH OR
SERIOUS INJURY.
NOTE
RUN INPUT POWER, MOTOR WIRING AND CONTROL
WIRING IN THREE SEPARATE METALLIC CONDUITS OR
RACEWAYS FOR HIGH FREQUENCY NOISE ISOLATION.
FAILURE TO ISOLATE POWER, MOTOR AND CONTROL
WIRING COULD RESULT IN LESS THAN OPTIMUM DRIVE
AND ASSOCIATED EQUIPMENT PERFORMANCE.
•
Connect the 3-phase motor wiring to bypass
terminals T1 (U), T2 (V), and T3 (W). See the
connection drawing inside the cover of the unit.
•
Depending on the configuration of the
equipment, motor wiring may be connected to
an electrical or mechanical overload, a contactor,
or terminal block.
•
Torque terminals in accordance with the
information provided on the connection diagram
inside the cover of the unit.
•
Motor wiring should never exceed the following
maximum distances: 300m (1000 ft) for
unshielded 150m (500 ft) for shielded
•
Motor wiring should always be as short as
practical.
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is a registered Danfoss trademark