KB Electronics KBDF-48 - Manual (Page 24)

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Models KBDF-42, 43, 45, 48: Designed for
400/460 Volt 3-Phase AC Line Input. Connect
the AC Line Input to Terminals "L1", "L2", and
"L3". See Figure 12.
8.2 AC LINE INPUT FUSING
The drive does not contain AC Line fuses. For the recommended fuse or circuit breaker rating,
see Table 3, on page 15. Do not fuse motor leads.
Most electrical codes require that each ungrounded conductor contain circuit protection. Do not
fuse neutral or ground connections.
It is recommended to install a fuse (Littelfuse 326, Buss ABC, or equivalent) or a circuit breaker
(Square D QOU or equivalent) in series with each ungrounded conductor.
8.3 MOTOR AND GROUND
Connect the Motor to Terminals "U", "V", and "W". Connect the Ground (earth) to Terminal
"GND". See Figure 13.
Motor cable length should not exceed 100 feet (30 m) – special reactors may be required –
consult our Sales Department.
Be sure that the Motor Current (Function 0.01) is programmed to the actual motor nameplate
current rating. Do not exceed the drive's maximum current rating.
Note: If the motor does not rotate in the desired direction, either: 1. Reverse any two motor
leads (with the AC Line disconnected and the motor stopped). 2. Use the FWD/REV Key. 3. Use
Function 1.02 to reprogram forward and reverse direction.
FIGURE 13
MOTOR AND GROUND CONNECTIONS
FIGURE 12
MODELS KBDF-42, 43, 45, 48
AC LINE AND GROUND CONNECTIONS
All Case "A" Drives All Case "B" Drives