2.4.4 Motor Cable
The motor must be connected to terminals U/T1/96, V/
T2/97, W/T3/98. Earth (ground) to terminal 99. All types of
three-phase asynchronous standard motors can be used
with a frequency converter unit. The factory setting is for
clockwise rotation with the frequency converter output
connected as follows:
Terminal No.
Function
96, 97, 98, 99
Mains U/T1, V/T2, W/T3
Earth (ground)
Table 2.3
2.4.5 Motor Rotation Check
The direction of rotation can be changed by switching two
phases in the motor cable or by changing the setting of
4-10 Motor Speed Direction
.
•
Terminal U/T1/96 connected
to U-phase
•
Terminal V/T2/97 connected
to V-phase
•
Terminal W/T3/98
connected to W-phase
96
97
U
V
96
97
98
U
V
W
98
W
130HA036.10
Table 2.4
A motor rotation check can be performed using
1-28 Motor
Rotation Check
and following the steps shown in the
display.
2.4.6 AC Mains Input Connection
•
Size wiring is based upon the input current of the
frequency converter.
•
Comply with local and national electrical codes
for cable sizes.
•
Connect 3-phase AC input power wiring to
terminals L1, L2, and L3 (see
130BC254.10
2
1
Illustration 2.11 Connecting to AC Mains
1 - Mains connection
2 - Motor connection
•
Earth (ground) the cable in accordance with the
instructions provided.
•
All frequency converters may be used with an
isolated input source as well as with earth
(ground) reference power lines. When supplied
from an isolated mains source (IT mains or
floating delta) or TT/TN-S mains with a grounded
leg (grounded delta), set
14-50 RFI Filter
to OFF.
When off, the internal RFI filter capacitors
between the chassis and the intermediate circuit
are isolated to avoid damage to the intermediate
circuit and to reduce earth (ground) capacity
currents in accordance with IEC 61800-3.
2.5 Control Wiring Connection
•
Isolate control wiring from high power
components in the frequency converter.
•
If the frequency converter is connected to a
thermistor, for PELV isolation, optional thermistor
control wiring must be reinforced/double
insulated. A 24 V DC supply voltage is
recommended.
Installation
VLT
®
HVAC Drive D-Frame
Operating Instructions
MG16D102 - VLT
®
is a registered Danfoss trademark
15
2
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