background image

Full manuals available online or use QR code

14300 De La Tour Drive

South Beloit, IL 61080

Phone: (815) 624-6915

Fax: (815) 624-6965

www.americancontrolelectronics.com

1Q SCR NEMA 1 Adjustable Speed Drive

with Reversing and Dynamic Braking

for PMDC or Field Wound Brushed Motors

LGC430 

......................................................115/230 VAC ± 10%, 50/60 Hz, single phase

...................................................................................................1.37 at base speed

..............................................................50 or 100 VDC

............................................................100 or 200 VDC

...................................................................................................1 Amp

...................................0.5 - 11 seconds

.................................0.5 - 22 seconds

...................coast to stop - 13 seconds

.................coast to stop - 25 seconds

..................................................................0 - 1.4 VDC

..................................................................0 - 2.8 VDC

.....................................................................................>100K ohms

....................................................................................1% base speed or better

........................................................................................................................60:1

...........................................................................................0.5G maximum

..............................................................................................0.1G maximum

...................................................................................10°C - 40°C

..............................................................................................................................3.0 lbs

UL/cUL Listed Equipment, file # E132235

UL/cUL Overload Protection

CSA Certified Component, file # LR41380

AC Line Voltage

Form Factor

Field Voltage 

with 115 VAC line voltage

                         with 230 VAC line voltage

Maximum Field Current

Acceleration Time Range 

for 90 VDC armature voltage

                                              

 

for 180 VDC armature voltage

Deceleration Time Range 

for 90 VDC armature voltage

                                               for 180 VDC armature voltage

Analog Input Range

 (Signal must be isolated; S1 to S2)

 

with 115 VAC line voltage

 

with 230 VAC line voltage

Input Impedance 

(S1 to S2)

Load Regulation

Speed Range

Vibration

 (0 - 50 Hz)

                  (>50 Hz)

Ambient Temperature Range

Weight

Safety Certifications

..................................................

Safety Certifications

......................................................................

Safety Certifications

..................................................

* Heat sink kit HSK- 0002 must be used when the continuous output current is over 5 amps.

1/20 - 1/8 

1/10 - 1/4 

1/8   - 1 

1/4   - 2 

Horsepower

Range

1.5 

 

10.0* 

Continuous 

Armature 

Current (Amps)  

0 - 90 

0 - 180 

0 - 90 

0 - 180 

Armature 

Voltage Range 

(VDC)  

115 

230 

115 

230 

Line 

Voltage 

(VAC)  

LGC430-1.5 

 

LGC430-10 

Model 

Specifications  

Safety Warnings 

•  

DO NOT INSTALL, REMOVE, OR REWIRE THIS EQUIPMENT WITH POWER APPLIED.

 Have a

  qualified electrical technician install, adjust and service this equipment. Follow the National

  Electrical Code and all other applicable electrical and safety codes, including the provisions of the

  Occupational Safety and Health Act (OSHA), when installing equipment.

•  

Circuit potentials are at 115 or 230 VAC above earth ground

. Avoid direct contact with the printed

  circuit board or with circuit elements to prevent the risk of serious injury or fatality. Use a non-

  metallic screwdriver for adjusting the calibration trim pots. Use approved personal protection

  equipment and insulated tools if working on this drive with power applied.

•  Reduce the chance of an electrical fire, shock, or explosion by using proper grounding techniques,

  over-current protection, thermal protection, and enclosure. Follow sound maintenance procedures.

•  

Removing AC line power is the only acceptable method for emergency stopping.

 Do not use

  dynamic braking, decelerating to minimum speed, or coasting to a stop for emergency stopping.

  They may not stop a drive that is malfunctioning. Removing AC line power is the only acceptable

  method for emergency stopping.

•  Line starting and stopping (applying and removing AC line voltage) is recommended for infrequent

  starting and stopping of a drive only. Dynamic braking, decelerating to minimum speed, or coasting

  to a stop is recommended for frequent starts and stops. Frequent starting and stopping can produce

  high torque. This may cause damage to motors.

•  

Do not disconnect any of the motor leads from the drive

 unless power is removed or the drive is 

  disabled. Opening any one lead while the drive is running may destroy the drive.

•  The field output is for shunt wound motors only. Do not make any connections to terminals 6 and 7

  when using a permanent magnet motor.

•  Change voltage switch settings only when the drive is disconnected from AC line voltage. Make sure

  both switches are set to their correct position. If the switches are improperly set to a lower voltage

  position, the motor will not run at full voltage and may cause damage to the transformer. If the

  switches are improperly set to a higher voltage, the motor will overspeed, which may cause motor

  damage, or result in bodily injury or loss of life.

•  

Do not change the FORWARD/REVERSE switch while the motor is running.

 The motor must come

  to a complete stop before reversing. Changing motor direction before allowing the motor to

  completely stop will damage the drive and/or motor.

READ ALL SAFETY WARNINGS BEFORE INSTALLING THIS EQUIPMENT 

1.7 9 

[45 ] 

5.0 0 

[127] 

8.00 [203 ] 

6.00 [125 ] 

2.50 

[64] 

2.50 

[64] 

2.7 5 

[70 ] 

1.25 [32] 

2.50 

[64] 

1.72 

[44] 

3.46 [88] 

SEPA RA TE MOTOR O VERC URRENT AND O VERL OA D PR OTECTION IN A CCOR DA NCE WITH 

THE CANADIAN ELECTRICAL CODE P ART 1 IS PRO VIDED BY OTHERS. 

MADE IN THE U.S.A . 

POWE R 

RUN 

BRAKE 

FORWAR D 

REVERSE 

WARNING: DISCONNECT FROM SUPP LY BEFORE OPENING THIS C OV ER. 

WARNING ! 

ALLOW MOTO R TO  STO P 

BEFORE REVERSING 

ALL DIMENSIONS IN INCH

E

S [MILLIMETER

S] 

Dimensions 

Ø0.19

[5] (4)

Ø0.88

[22] (2)

Installation 

Mounting

NEMA 1 cased drives come with two 0.88 inch (22 mm) conduit holes at the bottom of the case. The

drives may be vertically wall mounted or horizontally bench mounted using the three keyholes on the

back of the case.

1. For access to the keyholes and the terminal strip, remove the two screws from the front of the case

1. 

by turning them counterclockwise. Grasp the front cover and pull it straight out.

2. Install the mounting screws in the three keyholes.

3. Set the POWER switch to the OFF position before applying the AC line voltage.

4. Install conduit hardware through the conduit holes at the bottom of the case. Connect external

3. 

wiring to the terminal block.

5. Reinstall the front cover. Avoid pinching any wires between the front cover and the case.

6. Reinstall the two screws on the front cover. Turn the screws clockwise to tighten

.

Heat Sinking

The LGC430-10 requires an additional heat sink when the continuous armature current is above 5

amps. Use ACE heat sink kit part number HSK-0002. Use a thermally conductive heat sink compound

(such as Dow Corning 340® Heat Sink Compound) between the back of the case and the heat sink 

surface for optimal heat transfer.

Wiring

Use 14 - 16 AWG wire for AC line and motor wiring.

Shielding Guidelines

As a general rule, ACE recommends shielding of all conductors. If it is not practical to shield power

conductors, ACE recommends shielding all logic-level leads. If shielding of logic-level leads is not

practical, the user should twist all logic leads with themselves to minimize induced noise. It may be

necessary to earth ground the shielded cable. If noise is produced by devices other than the drive,

ground the shield at the drive end. If noise is generated by the drive, ground the shield at the end

away from the drive. Do not ground both ends of the shield.

Fusing

LGC430 series drives provide fusing for the AC line (1, 3). 

Fuses are fast acting fuses

. LGC430-1.5

models contain fuses rated for 3A at 250 VAC. LGC430-10 models contain fuses rated for 15A at

250 VAC.

Connections 

POWER 

Line Input 

Connect the AC line power leads to terminals L1 and L2, or to a double-throw, single-pole master power 

switch (recommended). The switch should be rated at a minimum of 250 VAC and 200% of motor current. 

 

Motor 

Connect the DC armature leads to terminals A1 and A2. If the motor spins in the reverse of desired rotation, 

simply power down the drive and reverse these connections. 

 

Field 

At 115 VAC, connect the field leads to terminals F1 and L1 for a 50 VDC field or to F1 and F2 for a 100 VDC field. 

At 230 VAC, connect the field leads to terminals F1 and L1 for a 100 VDC field or to F1 and F2 for a 200 VDC. 

Do not make any connections to F1 and F2 if using a permanent magnet motor. 

 

LOGIC 

Speed Potentiometer 

 S1, the wiper 

to S2, and the supply to S3. If the potentiometer works inveresly of desired functionality, (i.e. to increase 

motor speed, you must turn the potentiometer counterclockwise), power off the drive and swap the S1 and 

S3 connections. 

 

Inhibit 

Short the inhibit terminals to coast the motor to minimum speed. Open the INHIBIT terminals to 

accelerate the motor to set speed. Twist inhibit wires and seperate them from power-carrying wires or 

sources of electrical noise. Use shielded cable if the inhibit wires are longer than 18 inches (46 cm). If 

shielded cable is used, ground only one end of the shield to earth ground. Do not ground both ends of 

the shield. 

 

ACE offers two accessory plug harnesses for connecting to the inhibit terminals; part number KTW-0001 

[18 in (46 cm) leads] and part number KTW-0002 [36 in (91 cm) leads]. 

  

Line Input

Connect the AC line power leads to terminals 1 and 2 if using 115 VAC line power or to terminals 1 and 3

if using 230 VAC line power.

Motor

Connect the DC armature leads to terminals 4 and 5. If the motor does not spin in the desired direction,

power down the drive and reverse these connections.

Field

At 115 VAC, connect the field leads to terminals 7 and 1 for a 50 VDC field or to 7 and 6 for a 100 VDC field.

At 230 VAC, connect the field leads to terminals 7 and 1 for a 100 VDC field or to 7 and 6 for a 200 VDC field.

Do not make any connections to terminals 6 and 7 if using a permanent magnet motor.

Speed Potentiometer (Pre-wired)

LGC430 series drives are pre-installed with a 10K ohm, 1/4 W potentiometer for speed control.

Run/Stop Switch (Pre-wired)

LGC430 series drives are pre-installed with a Run/Stop switch. When set to Stop, this switch will inhibit

the drive, disconnect the motor armature, and connect a dynamic braking resistor across the motor. The

dynamic braking resistor allows the motor to stop quicker than if allowed to naturally coast to a stop.

Forward/Reverse Switch (Pre-wired)

LGC430 series drives are pre-installed with a Forward/Reverse switch. This switch swaps the motor

armature wires to change motor rotation direction. To use the Forward/Reverse Switch, first set the

Run/Stop switch to Stop. When the motor has come to a complete stop, toggle the direction switch

and then set the Run/Stop switch to Run. 

Do not change the Forward/Reverse switch while the motor

is running.

EARTH  G R OU N D 

( GREEN SCREW ) 

11 5 

VA C 

2 30 

VA C 

M O T OR 

ARMA T U R E 

WITH 11 5  V A C  IN P U T : 

CO NNE C T  T O  TERMINAL 1 F O R  50  V O LT FIEL D . 

CO NNE C T  T O  TERMINAL   6  F O R  1 00  V O LT FIEL D . 

WITH 230 VAC INPUT: 

CONNECT TO TERMINAL 1 FOR 100 VOLT FIELD. 

CONNECT TO TERMINAL 6 FOR 200 VOLT FIELD. 

M O T O R FIEL D 

( SHUNT WOUN D 

MOTORS ONL Y ) 

NOTE:  DO NOT make

any connections to

terminals 6 and 7 if using a

permanent magnet motor.

Reviews: