KB Electronics KBRG-212D - Manual (Page 26)

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10.2 Maximum Speed (MAX) - The MAX Trimpot is
used to set the maximum output voltage of the
control which, in turn, sets the maximum speed
of the motor. The MAX Trimpot is factory
setto100% of base speed. In the Torque
Control Mode, the MAX Trimpot setting
determines the unloaded motor speed. See
Figure 21.
Adjust the MAX Trimpot as follows:
a. Rotate Main Speed Potentiometer to full speed (CW).
b. Adjust MAX trimpot to desired maximum motor speed.
Note: Do not exceed maximum rated RPM of motor since unstable operation may
result.
10.3 Forward Current Limit (FCL) and Reverse Current Limit (RCL) Trimpots - These
trimpots are used to set the maximum amount of DC current that the motor can draw in
both the forward and reverse directions. The amount of DC current determines the
amount of maximum motor torque in both the Speed Control Mode and Torque Control
Mode. They are factory set to 150% of the current established by the jumper J2
position. See Figures 22A and 22B, on page 27.
Readjust the CL trimpots as follows:
a. Turn CL trimpot to MIN (CCW) position. Be sure jumper J2 is in proper position
approximately equal to the motor DC ampere rating.
b. Connect a DC ammeter in series with armature lead. Lock shaft of motor.
FIGURE 20A –
FORWARD AND REVERSE
ACCELERATION TRIMPOT POSITIONS
FIGURE 20B – ACCEL TRIMPOT
ADJUSTMENT
FW
D
A
C
C
E
L
R
E
V
A
C
C
E
L
FW
D
A
C
C
E
L
0
-100
R
E
V
A
C
C
E
L
100
Spe
e
d (%)
Time
FIGURE 21 –MAXIMUM SPEED
TRIMPOT POSITION