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IV.
MOUNTING.
Mount the KBRG-212D on a flat surface free of moisture, metal chips, or corrosive atmosphere.
See Mechanical Specifications fig. 9, p. 9. A 5K ohm remote speed potentiometer is provided
with each control. Install potentiometer using hardware provided. Be sure to install insulating
disk between potentiometer and inside of front panel.
Enclosure – When mounting the KBRG-212D in an enclosure, it must be large enough to allow
the proper heat dissipation. A 12"12"24" enclosure is suitable at full rating (7.5 Amps).
Smaller enclosures may be used if full rating is not required.
V.
WIRING.
Warning! To avoid erratic operation do not bundle AC Line and motor wires with
potentiometer, voltage following, enable, inhibit or other signal wiring. Use shielded
cables on all signal wiring over 12" (30 cm) – Do not ground shield.
Wire control in accordance with National Electrical Code requirements and other local codes
that apply. A "normal blo" 15 amp fuse or circuit breaker should be used on each AC line
conductor which is not at ground potential (do not fuse neutral or grounded conductors). (See
section VI, p. 11 for fuse information.) Wire control in accordance with connection diagrams
(see figures 6, 7A, 7B on page 7 and figures 10 - 12 on page 10). A separate AC Line switch
or contactor must be wired as a disconnect switch so that contacts open each ungrounded
conductor of the control. See table 6 for terminal block wiring information.
Terminal Block
Designation
TB1
TB2
TB3
6
FIG. 5 – TORQUE CONTROL MODE
Warning! Read Safety Warning before attempting to use this control.
TABLE 6 – TERMINAL BLOCK WIRING INFORMATION
Connection
Designation
Logic Connections
F+, F-
L1, L2, M2, M1
Supply Wire Gauge*
Minimum
Maximum
22
14
22
14
22
12
Maximum Tightening
Torque (lbs inch)
3.5
3.5
12
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