KB Electronics KBMA-24DF - Manual (Page 15)

GFCI Operation – Do not connect this
drive to an AC power source controlled by
a Ground-Fault Circuit-Interrupter. Special
software is available for GFCI operation –
contact our Sales Department.
AC Line Fusing – The drive does not contain
line fuses. 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 in series with each
ungrounded conductor. Connect the drive in
accordance with the National Electrical Code
requirements and other local codes that may
apply to the application. Do not fuse motor
leads. For the recommended fuse size, see
Table 3, on page 9.
6.2 GROUND CONNECTION – Connect the ground (earth) wires from the AC line and motor to Terminal Block
TB1 (Terminal “GND”). See Figure 7.
6.3 MOTOR CONNECTION – Connect the motor to Terminal Block TB1 Terminals “U”, “V”, “W”. See Figure 7.
Motor cable length should not exceed 100 ft (30 m) – special reactors may be required – consult our Sales
Department. Be sure Jumper J2 is set to the corresponding motor horsepower rating, as described in
Section 7.2, on page 16.
Note: If the motor rotates in the incorrect direction, it will be necessary to disconnect the AC line and
change the position of the jumper on CON2 from “F” to “R” or reverse any two motor leads.
6.4 RUN/FAULT RELAY CONNECTION – The Run/Fault
Relay Output Contacts are located at TB2 and can be
used to turn on or off equipment or to signal a warning if a
fault has occurred or the drive is put into the Stop Mode*.
See Figure 8. The Run/Fault Relay Contact status for
various drive operating conditions is shown in Table 5, on
page 16. Also see Section 7.5, on page 18.
Relay Contacts Ratings – 1 Amp at 30 Volts DC, 0.5
Amps at 125 Volts AC, and 0.25 Amps at 250
Volts AC.
*In order for the Run/Fault Relay to give “Stop Mode” indication, the optional Forward-Stop Reverse Switch
(Part No. 9519) must be installed.
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FIGURE 7 – AC LINE INPUT, MOTOR & GROUND CONNECTIONS
115* or 208/230 Volt
Single-Phase AC Line Input
3-Phase, 208/230 Volt
AC Induction Motor
AC LINE MOTOR
Motor
TB1
U V
Ground (Earth)
GND W L1 L2
* For 115 VAC line, install Jumper J1 (supplied).
FIGURE 8 – RUN/FAULT RELAY
OUTPUT CONTACTS CONNECTIONS
Normally Open
Normally Closed
Relay Common Run/Fault Relay
Output Contacts
TB2
COM N.C. N.O.