KB Electronics KBPI-240DR - Manual (Page 12)

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FIG. 4 – AC LINE AND MOTOR
CONNECTION DIAGRAM
V. WIRING
WARNING! Read Safety Warning on page 2 before attempting to use this control.
Wire control in accordance with the National Electric Code requirements and other
codes that apply. Be sure to fuse each conductor which is not at ground potential. Failure to
follow the Safety Warning Instructions may result in electric shock, fire or explosion. Do not
fuse neutral or grounded conductors. Note: See sec. VI, p.11 Fusing. A separate AC line
switch, or contactor, must be wired as a disconnect switch, so that the contacts open each
ungrounded conductor. (See fig. 4 for AC Line and Armature connection.) Note: Do not
bundle AC or motor leads with logic leads or erratic operation may occur.
1. Twist logic wires (speed adjustment potentiometer or voltage signal input wires) to avoid
picking up electrical noise. If wires are longer than 18,” use shielded cable.
2. You may have to earth ground the shielded cable. If noise is coming from devices other
than the drive, ground the shield at the drive end (ground screw in enclosure). If noise
is generated by a device on the drive, ground the shield at the end away from the drive.
Do not ground both ends of the shield.
3. Do not bundle logic wires with power carrying wires or other sources of electrical noise.
Never run speed adjustment potentiometer or voltage signal input wires in the same
conduit as motor or AC line voltage wires.
4. Connect earth ground to the earth ground screw provided in the enclosure. (See fig. 1B,
p. 5 for ground screw location.)
Two .875" (22.2 mm) knockout holes are provided for a standard 1/2" knockout
connector (not supplied) for wiring. A plug is provided if only one knockout is required.
Be sure to use suitable connectors and wiring that are appropriate for the application.
A. AC Line – Connect AC Line to terminals L1
and L2. (Be sure jumper J1 on the Logic
Board and jumpers J2A and J2B on the Power
Board are set to the correct position to match
the AC Line input voltage. (See table 4 p. 9.)
B. Motor Armature – Connect motor armature to
terminals A1 (+) and A2 (-). (Be sure jumper
J3 on the Power Board is set to the correct
position 90V, 180V to match the motor
voltage. (See table 4, p. 9.)
WARNING! Do not wire switches or relays in
series with the armature. Armature
switching can cause catastrophic failure of
motor and/or control. Do not bundle AC
line and motor wires with other wires (e.g.:
potentiometer, analog input, Run, Jog, Stop, etc.) since erratic operation may
occur. Do not use this control on shunt wound motors.
TABLE 6 – TERMINAL BLOCK WIRING INFORMATION
Terminal Block
Designation
Connection
Designation
Supply Wire Gauge*
Maximum Tightening
Torque ( in – lbs)
MINIMUM MAXIMUM
TB1 L1, L2 22 12 12
TB2 A1, A2 22 12 12
TB3 Logic Connections 24 14 3.5
*Use Cu wire only (AWG)