User Guide

7
-15V
+15VSIG MIN
S3 S2 S0S1
FIG. 8 – UNIDIRECTIONAL
OPERATION (Forward)
FIG. 12 – VOLTAGE FOLLOWING CONNECTION
D. Ground – Be sure to ground (earth) control via green
screw located on chassis.
E. Main Speed Potentiometer – The main speed potenti-
ometer can be connected in several ways using termi-
nals “S0,” “S1,” “S3.” (A 5K ohm potentiometer is
supplied with control. (A 10K potentiometer can also be
used.) (Warning! Terminals S0, S1, S2 and S3 are not
isolated from AC line.) Note: Jumper J5 must be in the
“15V” position.
i. Unidirectional operation only – Connect potentiom-
eter to terminals “S0,” “S1,” “S2" for forward direction.
See fig. 8. To operate in reverse direction, connect
to “S0,” “S2,” and “S3.” See fig. 9.
ii. Bidirectional operation using reversing contacts
– Connect to terminals “S0,” “S1,” “S2,” and “S3" as per fig. 11.
-15V
+15VSIG MIN
S3 S2 S0S1
FIG. 9 – UNIDIRECTIONAL
OPERATION (Reverse)
FWD
REV
RB2S3 S1S2 RB1S0
MAIN
SPEED
POT
-15V SIG MIN+15V STPCOM
FIG. 10 – BIDIRECTIONAL
OPERATION (Reversing Contact)
-15V
+15VSIG
S3
S2
S1
FIG. 11 – BIDIRECTIONAL
OPERATION (Potentiometer)
F. Voltage Following – An analog voltage
can be used in lieu of main speed poten-
tiometer. Connect signal to terminals
“S2" and “RB1.” Note: Terminal “RB1" is
common. A positive signal with respect
to terminal “RB1” will produce a positive
output to motor. A negative signal with
respect to terminal “RB1" will produce a
negative output. A0 to ±10VDC is re-
quired to operate control from 0 ± full
output. [A bipolar signal isolator, SI-4X
(KB P/N 8801), is available as an option
from your distributor.] Note: Jumper J5
must be in the “10V” position.
Note: An isolated signal voltage
must be used or catastrophic failure can result.
G. Start/Stop Circuits – The KBRG-213D contains two 2-wire stop circuits which are used
to electronically bring the motor to a “stop.” Both require an isolated single contact
closure. If an isolated contact is not available, it may be necessary to use an isolation
relay.
WARNING! Do not use Start/Stop or inhibit functions as a safety
disconnect. Use only an AC line disconnect for that purpose.