KB Electronics KBRG-212D - Manual (Page 25)

25
The KBRG-212D can be operated as speed controls or torque controls by setting the
position of jumper J5. The Main Speed Potentiometer controls the magnitude of the mode
selected. Set jumper J5 to "SPD" for speed control or to "TRQ" for torque control. See
Table 10.
TABLE 10 – SUMMARY OF CONTROL (REGEN) OPERATION
Quadrant
Type of
Operation
Motor
Rotation
Direction
Motor
Torque
Direction
Applied
Load
Direction
I Motoring CW CW CCW
II Regeneration CCW CW CCW
III Motoring CCW CCW CW
IV Regeneration CW CCW CW
10 TRIMPOT
ADJUSTMENTS
The KBRG-212D contains trimpots, which are factory set for most applications. Figure 1, on
page 10, illustrates the location of the trimpots and their approximate calibrated positions.
Some applications may require readjustment of the trimpots in order to tailor the control for a
specific requirement. Readjust trimpots as described below.
WARNING! IF POSSIBLE, DO NOT ADJUST TRIMPOTS WITH MAIN POWER
APPLIED. IF ADJUSTMENTS ARE MADE WITH MAIN POWER APPLIED, AN
INSULATED KB ADJUSTMENT TOOL MUST BE USED AND SAFETY GLASSES MUST
BE WORN. HIGH VOLTAGE EXISTS IN THIS CONTROL. FIRE AND/OR
ELECTROCUTION CAN RESULT IF CAUTION IS NOT EXERCISED. SAFETY
WARNING, ON PAGE 5, MUST BE READ AND UNDERSTOOD BEFORE PROCEEDING.
10.1 Forward Acceleration (FACC) and Reverse Acceleration (RACC) – The FACC
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 (FACC is the Reverse Decel)
See Figure 20A, on page 26.
The RACC Trimpot determines the amount of time it takes the control voltage to
reach full output in the reverse direction. It also determines the amount of time it takes
the control voltage, in the forward direction, to reach zero output to decelerate in the
reverse direction (FACC = Reverse Deceleration).
The FACC and RACC Trimpots are factory set to 1 second. The acceleration times
are adjustable to a maximum of 15 seconds (RACC is the forward Decel) See Figure
20B, on page 26.
Notes:
The FCL and RCL Trimpot settings may override the rapid accel and decel
settings.