VLT
®
Series 2000
8
CAUTION:
It is the responsibility of the user or the person installing
the drive to provide proper grounding and branch circuit
protection for incoming power and motor overload.
National Electrical Codes (NEC) and local codes must be
observed.
Prefuses
Prefuses must be installed in the AC line feeding the
adjustable frequency drive.
Wiring
Cables for the control signals and the brake cable must
be shielded in order to comply with EMC specifications.
The maximum cable length and the maximum cable
cross section is listed in the Specification Chart.
The Electronic Thermal Relay (ETR) in UL listed VLT's
provides class 20 motor overload protection in
accordance with NEC in single motor applications, when
parameter 315 is set to
Trip [2] and parameter 107 is set
to nominal motor (nameplate) current.
The correct sizes and ratings can be found in the
Specification Chart.
Any motor cable shielding is connected to the ground
terminals in the adjustable frequency drive and the motor.
If non-shielded cables are used, the control inputs can
occasionally be subject to signal disturbances. Normally
such a disturbance will not affect the VLT.
Signal Wiring
Line and Motor Wiring
Installation; Wiring
VLT
VLT
®
®
Menu
Data
Stop
Reset
Jog
Start
Fwd.
Rev.
+
–
Variable Speed Drive
MOTOR BR
LINE
Alarm
On
01
02
03
0UT 46
+24V 12
DIN1 18
DIN2 19
20
DIN3 27
DIN4 29
10V 50
A IN 53
55
A IN 60
61
RS 232 RXD 71
RS 232 TXD 72
L1 L2 L3 PE
U
V
W
81 82
Tmax
M
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