Control Modifications - DART Controls 13DVA Series Instruction Manual

TRIMPOT
MIN. Sets minimum motor speed when
speedpot is set at zero. CW rotation
will increase minimum motor speed.
IR COMP Provides a means of improving motor
speed regulation. If a slowdown due to
load change is of no concern, rotate
this trimpot fully CCW.
Sets maximum motor speed when
MAX.
speedpot is set at maximum (fully CW
rotation). CW rotation of MAX trimpot
increases maximum motor speed.
Limits DC motor armature current
CUR.LIM.
(torque) to prevent damage to the
motor or control. The current limit is
set for the rated motor current. CW
rotation of this trimpot increases the
armature current (or torque produced).
TWO SPEED OPERATION USING
TWO 10K SPEEDPOTS
P1
LO
W
-8
HI
-7
SPDT
-6
INHIBIT
P1
-8 LO
-7
WIPER
SPST
-6 HI

CONTROL MODIFICATIONS

FUNCTION
LO
W
P1
HI H
-8
-7
-6
SPEEDPOT
ADJUSTMENT
1. Select a direction and set Speedpot to zero (fully CCW).
2. Rotate MIN trimpot CW until motor starts to rotate
3. Slowly rotate MIN trimpot CCW until motor stops.
NOTE: If motor rotation is desired, rotate MIN trimpot
CW until desired MIN speed is reached
1. Select a direction and set Speedpot at 50%.
2. Observe motor speed at no load condition.
3. Apply full load to motor.
4. Turn IR COMP trimpot CW until you obtain the same
motor speed as the no load condition.
1. TURN DRIVE POWER OFF!!
2. Connect a DC Voltmeter across A1 and A2.
NOTE: Meter must not be grounded!!
3. Set meter voltage range if needed: (90 VDC for 120
VAC, 180VDC for 240 VAC).
4. Turn power on. Select a direction and set Speedpot
at100%.
5. Adjust the MAX trimpot to rated motor armature voltage
as shown on meter. NOTE: A tachometer or strobe
may be used in lieu of a meter. Follow above steps,
except adjust MAX trimpot to rated motor base speed
indicated by tachometer or strobe.
1. TURN DRIVE POWER OFF!
2. Connect a DC Ammeter between A1 on motor and A1
on the control. This is in series with the motor.
NOTE: Meter must not be grounded!!
3. Turn power on.
4. Select a direction and set Speedpot at the 50% position.
5. Apply friction braking to motor shaft until motor stalls.
6. With motor stalled, set current at 125% of rated motor
armature current by adjusting CUR. LIM . trimpot.
TWO SPEED OPERATION USING
TWO 5K SPEEDPOTS
DPDT SWITCH
8
LO
LO
W W
HI
HI