KB Electronics KBMM-225D - Manual (Page 24)

10.2 The Hi-Pot Tester must have an automatic ramp-up to the test voltage and an automatic
ramp-down to zero voltage.
Note: If the Hi-Pot Tester does not have automatic ramping, then the hi-pot output must be manually
increased to the test voltage and then manually reduced to zero. This procedure must be followed for each
machine to be tested. A suggested Hi-Pot Tester is Slaughter Model 2550.
CAUTION! Instantaneously applying the hi-pot voltage will cause irreversible damage to the control.
11 TRIMPOT ADJUSTMENTS
The control contains trimpots which have been factory set for most applications. Some applications may require
readjustment of the trimpots in order to tailor the control for a specific requirement. Readjust the trimpots as
described below. See Figure 1, on page 10, for the location of trimpots.
Warning! If possible, do not adjust trimpots with the main power applied. If adjustments are
made with the main power applied, an insulated adjustment tool must be used and safety
glasses must be worn. High voltage exists in this control. Electrocution can result if caution is not exer-
cised. Safety Warning, on page 6, must be read and understood before proceeding.
Note: In order for the IR Compensation and Current Limit settings to be correct, the proper Plug-In Horsepower
Resistor® must be installed for the particular motor and input voltage being used.
See Section 9, on page 21.
11.1 Acceleration Trimpot (ACCEL) – The ACCEL Trimpot is provided to allow for a
smooth start over an adjustable time period each time the AC power is applied
or the Main Speed Potentiometer is adjusted to a higher speed. The ACCEL
Trimpot has been factory set to 2 seconds, which is the amount of time it will
take for the motor to accelerate from zero speed to full speed. To increase the
acceleration time, rotate the ACCEL Trimpot clockwise. To decrease the accel-
eration time, rotate the ACCEL Trimpot counterclockwise. See Figure 14.
24
!
3
5
(Factory Set to 2 Seconds)
0.2
2
8
10
FIGURE 14
ACCEL TRIMPOT RANGE