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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 and with
Speed or Torque Mode for PMDC Brushed Motors
LGD430
......................................................115/230 VAC ± 10%, 50/60 Hz, single phase
...................................................................................................1.37 at base speed
..................................................................................0.5 - 17 seconds
..................................................................coast to stop - 25 seconds
............................................0 - 2.5 VDC
.....................................................................................>100K ohms
....................................................................................1% base speed or beer
........................................................................................................................60:1
...........................................................................................0.5G maximum
..............................................................................................0.1G maximum
...................................................................................10°C - 40°C
..............................................................................................................................3.0 lbs
UL/cUL Listed Equipment, file # E132235
UL/cUL Overload Protecon
CSA Cerfied Component, file # LR41380
AC Line Voltage
Form Factor
Acceleraon Time Range
Deceleraon Time Range
Analog Input Range (Signal must be isolated; S1 to S2)
Input Impedance (S1 to S2)
Load Regulaon
Speed Range
Vibraon (0 - 50 Hz)
(>50 Hz)
Ambient Temperature Range
Weight
Safety Cerficaons..................................................
Safety Cerficaons......................................................................
Safety Cerficaons..................................................
* Heat sink kit HSK- 0002 must be used when the connuous 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*
Connuous
Armature
Current (Amps)
0 - 90
0 - 180
0 - 90
0 - 180
Armature
Voltage Range
(VDC)
115
230
115
230
Line
Voltage
(VAC)
LGD430-1.5
LGD430-10
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 Naonal
•Electrical Code and all other applicable electrical and safety codes, including the provisions of the
• Occupaonal Safety and Health Act (OSHA), when installing equipment.
• Circuit potenals 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 adjusng the calibraon trim pots. Use approved personal protecon
•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 protecon, thermal protecon, and enclosure. Follow sound maintenance procedures.
• Removing AC line power is the only acceptable method for emergency stopping. Do not use
• dynamic braking, decelerang to minimum speed, or coasng to a stop for emergency stopping.
• They may not stop a drive that is malfunconing. Removing AC line power is the only acceptable
•method for emergency stopping.
• Line starng and stopping (applying and removing AC line voltage) is recommended for infrequent
• starng and stopping of a drive only. Dynamic braking, decelerang to minimum speed, or coasng
• to a stop is recommended for frequent starts and stops. Frequent starng 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.
• Change voltage switch sengs only when the drive is disconnected from AC line voltage. Make sure
• both switches are set to their correct posion. If the switches are improperly set to a lower voltage
• posion, 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 direcon before allowing the motor to
•completely stop will damage the drive and/or motor.
READ ALL SAFETY WARNINGS BEFORE INSTALLING THIS EQUIPMENT
1.79
[45]
5.00
[127]
8.00 [203]
6.00 [125]
2.50
[64]
2.50
[64]
C
L
2.75
[70]
1.25 [32]
2.50
[64]
1.72
[44]
3.46 [88]
SEPARATE MOTOR OVERCURRENTAND OVERLOAD PROTECTION IN ACCORDANCE WITH
THE CANADIAN ELECTRICAL CODE PART 1 IS PROVIDED BY OTHERS.
MADE IN THE U.S.A.
POWER RUN
BRAKE
FORWARD
REVERSE
I
0
WARNING: DISCONNECT FROM SUPPLY BEFORE OPENING THIS COVER.
WARNING!
ALLOW MOTOR TO STOP
BEFORE REVERSING
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Dimensions
Ø0.19
[5] (4)
Ø0.88
[22] (2)
Installation
Mounng
NEMA 1 cased drives come with two 0.88 inch (22 mm) conduit holes at the boom of the case. The
drives may be vercally 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 monng screws in the three keyholes.
3. Set the POWER switch to the OFF posion before applying the AC line voltage.
4. Install conduit hardware through the conduit holes at the boom 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 ghten.
Heat Sinking
The LGD430-10 requires an addional heat sink when the connuous armature current is above 5
amps. Use ACE heat sink kit part number HSK-0002. Use a thermally conducve heat sink compound
(such as Dow Corning 340® Heat Sink Compound) between the back of the case and the heat sink
surface for opmal 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 praccal to shield power
conductors, ACE recommends shielding all logic-level leads. If shielding of logic-level leads is not
praccal, 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
LGD430 series drives provide fusing for the AC line (1, 3). Fuses are fast acng fuses. LGD430-1.5
models contain fuses rated for 3A at 250 VAC. LGD430-10 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 rotaon,
simply power down the drive and reverse these connecons.
LOGIC
Speed Potenometer
S1, the wiper
to S2, and the supply to S3. If the potenometer works inveresly of desired funconality, (i.e. to increase
motor speed, you must turn the potenometer counterclockwise), power off the drive and swap the S1 and
S3 connecons.
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 connecng 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 direcon,
power down the drive and reverse these connecons.
Speed Potenometer (Pre-wired)
LGD430 series drives are pre-installed with a 10K ohm, 1/4 W potenometer for speed control.
Run/Stop Switch (Pre-wired)
LGD430 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)
LGD430 series drives are pre-installed with a Forward/Reverse switch. This switch swaps the motor
armature wires to change motor rotaon direcon. 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 direcon switch
and then set the Run/Stop switch to Run. Do not change the Forward/Reverse switch while the motor
is running.
EARTH
R
N
GREEN SCREW
11
VA
2
VA
M
T
ARMAT
R
