DART Controls 13DVA Series Instruction Manual page 5

• The 123D variable speed control is available in a range of 150mA through 5.5 ADC (or up to 10 ADC if using a suitable
external heatsink) at 24 through 36 VAC input.
• The 125D variable speed control is available in a range of 150mA through 1/4 H.P. at 120/240 VAC input.
• The 125DV variable speed control is available in a range of 1/8 through 1 H.P. at 120/240 VAC input. With -HS(125D)
or suitable external heatsink (where 125D extrusion temperature does not exceed 70° C.), maximum U.L./C.S.A.
rating can be increased to 2 H.P. and 10 Amps DC.
• The control is designed for DC Permanent Magnet, Shunt Wound, and some Universal (AC/DC) motors in the above
horsepower ranges.
• Incoming AC voltage is converted to adjustable full wave rectified DC voltage to operate the DC motor. Also, a full
wave field voltage is provided for shunt wound motors (see page 11 for voltages).
• The control incorporates transient voltage protection with adjustable current limit which fits into a compact pack-
age. It features adjustable minimum and maximum speeds along with adjustable IR compensation and an inhibit
function.
• Options are available to change ACCEL/DECEL time (see page 8, -15 / -K options).
• U.L. Recognized under Standard 508, U.L. File # E78180.
MINIMUM SPEED - Allows adjustment of the motor speed when the speedpot is set at minimum (CCW). This permits the user
to eliminate "Deadband" on the main speed control, permitting zero calibration. Clockwise rotation of "MIN" trimpot increases
speed.
MAX SPEED (Maximum Speed) - Allows adjustment of the motor speed when the speedpot is set at maximum (CW). This permits
the user to eliminate the top end "Deadband", which will provide full speed at maximum rotation. Rotation of the "MAX" trimpot
in the clockwise direction increases the maximum motor speed.
I.R. COMP (Speed Regulation) - This allows for adjustment of the circuitry that controls the speed regulation of the motor. The
circuitry controls armature speed by changing the armature voltage to compensate for increased or decreased motor loading.
Clockwise rotation of the "IR COMP" trimpot will increase compensation.
CUR. LIM. (Current Limit) - Provides protection from excessive armature current by limiting the maximum armature current the
control can provide. This enables adjustment of the maximum torque the motor can deliver. Torque adjustment (Cur. Lim.) is preset
at 125% of rated motor torque (current) based on horsepower. Clockwise rotation of the "CUR. LIM." trimpot increases the torque
(current) the control will provide.
INHIBIT TERMINAL PIN - Allows the user a choice of stopping and starting hard (fast) or stopping hard with a soft start through
an adjustable acceleration ramp, without breaking the AC lines (see page 6).
TERMINAL STRIP - Allows for connection of AC lines, motor leads, motor field (if needed), and speed potentiometer
125D SERIES HEATSINK DIMENSIONS
AUXILIARY HEATSINK -HS(125D)
.6875
5.625
.6875
1.375
INTRODUCTION
CONTROL FEATURES
.218
5.625
6.250
STANDARD HEATSINK
MIN
.188" DIA.
(6 SLOTS)
MAX
IR COMP
11/32"
SLOT
CUR LIM
DEPTH
.249"
2
4.250"
P1
-8
P2
ADDER BOARD
-7
CONNECTOR
-6
-5
-4
P3
-3
INHIBIT
PIN
-2
-1
3.750"
.694"
1.750"
3.625"
1.300"
.380"