Dart Controls 125 Series Catalog Page

The 125 Series is a compact,

cost efficient, reliable control for

Adjustable horsepower range:

The 123D-C mo d e l oper a tes on a

Standard features include an

inhibit circuit for start-stop

voltage 120/240 VAC or 24/36 VAC

testing. The 125 Series is ideal

for applications such as: office

125 Series

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Variable Speed DC Control

cULus Recognized

Speed Potentiometer

Kit Included

125 SERIES STANDARD fEATURES

SPEEDPOT LO
SPEEDPOT WIPER
SPEEDPOT HI
+FIELD

-ARM/-FIELD
+ARM
AC INPUT
AC INPUT

MAX

MIN

IR COMP

CUR LIM

P1

-1

-2

-3

-4

-5

-6

-7

-8

INHIBIT

• Dual Voltage 120/240 VAC or 24/36 VAC, 50/60Hz

• Adjustable horsepower settings

• Barrier terminal strip

• Full wave bridge supply

• 1% speed regulation with armature voltage feedback;

±1/2% with tach feedback

• Adjustable Minimum speed (0–30% of max)

• Adjustable Maximum speed (60–110% of base)

• Adjustable IR Compensation

• Adjustable Current Limit

• Fixed Acceleration (0.5 sec.)

• Line voltage compensation

• 5K ohm speed potentiometer with leads, dial & knob included

• 50:1 speed range

• Overload capacity: 200% for one minute

• Transient voltage protection

• Voltage following mode or DC tachometer follower by

supplying ungrounded analog input signal (0–12 VDC)

• DC tachometer feedback (6V at base speed)

• Inhibit circuit–

permits start & stop without breaking AC lines

• Shunt eld supply provided (1 Amp max; 100V for 120
VAC; 200V for 240 VAC input)

125 SERIES SELECTION gUIDE

H.P. RANgE MODEL INPUT OUTPUT

150mA - 5.5ADC 123D-C 24/36 VAC 0-20/30 VDC
1/50 - 1/8 120 VAC 0-90 VDC
1/25 - 1/4 240 VAC 0-180 VDC
1/8 - 1/2* 120 VAC 0-90 VDC
1/4 - 1.0* 240 VAC 0-180 VDC

* With suitable external heatsink. UL rating for output amps can be increased
from 5.5 amps DC to 10.0 amps DC.

Horsepower settings are adjustable - see installation manual. Control is tested
and calibrated for maximum horsepower in its category.

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125D-12C

125DV-C

DIMENSIONAL SPECIfICATIONS

MODEL WIDTH HEIgHT DEPTH WEIgHT

English (inches)

Chassis 3.63 4.25 1.30 8 oz.

Metric (centimeters)

Chassis 9.20 10.80 3.30 227 gm.

ADjUSTMENTS AND HOOK-UP

POPULAR OPTIONS

-55G option

-2A option

OPERATINg CONDITIONS

Temperature ................................................. -10° to +45° C.

AC Input Voltage .............................±10% Rated Line Voltage

Input Frequency ...................................................50/60 Hz.

ELECTRICAL SPECIfICATIONS AC INPUT 50/60 Hz

120 VAC Single Phase Input, 0-90 VDC Output

MAx. AC MAx. ARM*

H.P. AMPS KVA AMPS DC

1/50 0.5 0.06 0.4
1/20 1.0 0.12 0.8
1/8 2.0 0.24 1.6
1/4 3.5 0.42 2.7
1/3 4.4 0.53 3.4
1/2 6.5 0.78 5.0

240 VAC Single Phase Input, 0-180 VDC Output

MAx. AC MAx. ARM*

H.P. AMPS KVA AMPS DC

1/4 1.8 0.42 1.4
1/3 2.2 0.53 1.7
1/2 3.3 0.78 2.5
3/4 4.8 1.15 3.7
1 6.5 1.56 5.0

* Minimum Armature Amps: 150mA DC

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-5 option

OPTION DESCRIPTION

OPTION SUffIx

Electronic speed control interlock - when AC power to
control is applied, prevents motor from starting until
speedpot is first rotated to the zero position, then CW.
Also, should AC power be interrupted then restored,

prevents automatic restart. (Patent # 4,888,813) ............ -1*

Independently adjustable linear accel and decel

(0.5 - 8.0 seconds) ................................................... -2A*

4-20mA isolated signal follower ....................................... -5*

-5 option with Auto/Manual switch .................................. -7*

Acceleration time (approx. 4 seconds) ............................ -15B

Acceleration time (approx. 6 seconds) ................................-K

Forward-Off-Reverse manual switch

(center blocked, no Dynamic Brake) ...........................-29B*

Isolated voltage follower (120/240 VAC input)– controls speed
from any external grounded or ungrounded signal: 0-5 VDC

thru 0-250 VDC adjustable ........................................-55G*

-55G option with Auto-Manual function .........................-56G*

Auxiliary heatsink

(7” long x 6.25” wide x 1.375” deep)...................-HS(125)*

Other options are available, please consult factory for your requirement.
* Field installable

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