KB Electronics KBMG-212D - Manual (Page 28)

SECONDS
7.5
14.0 1.0
ACCEL TRIMPOT SETTING
0.1 15.0
FIG. 18 – ACCEL TRIMPOT ADJUSTMENT
TABLE 8 – ARMATURE FUSE CHART
Motor Horsepower Approx. DC
Motor
Current Amps
Fuse Rating
(AC Amps)
90VDC 180VDC
1/8 1/4 1.3 2
1/6 1/3 1.7 2
1/4 1/2 2.5 4
1/3 3/4 3.3 5
1/2 1 5.0 8
3/4 1 7.5 12
1 2 10.0 20
VII. TRIMPOT ADJUSTMENTS.
The KBMG-212D contains trimpots that have been factory adjusted for most
applications. See specifications for factory settings. (Note: Fig. 12, p. 20, presents the
various trimpots with their location. They are shown in the approximate factory
position.) Some applications may require readjustment of trimpots in order to tailor
control to exact requirements. Readjust trimpots as follows:
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A. Forward Acceleration
(FWD ACCEL) and
Reverse Acceleration
(REV ACCEL) – The FWD
ACCEL trimpot determines
the amount of time it takes
the control voltage to reach
full output in the forward
direction. It also determines
the amount of time it takes
for the control voltage, in the
reverse direction, to reach
zero output. (FWD ACCEL
is the Reverse Decel.)
The REV ACCEL trimpot
determines the amount of
time it takes the control
voltage to reach full output in the reverse direction and the time it takes for the
control voltage, in the forward direction, to reach zero output. (REV ACCEL is the
Forward Decel.)
The FWD and REV ACCEL trimpots are factory adjusted to approximately 1
second. The acceleration times are adjustable over a range of 0.1 to 15 seconds.
See fig. 18 for graphical representation of ACCEL.
Note: The FWD and REV CL trimpots may override the rapid accel and decel
settings.
26
time
SPEED
100
0
-100
(%)