American Control Electronics MTU400-11.5 User manual

1Q SCR Chassis Adjustable Speed Drive
for PMDC or Field Wound Brushed Motors
MTU400-11.5 14300 De La Tour Drive • South Beloit, IL 61080
Phone: [phone] • Fax: [phone]
www.americancontrolelectronics.com
......................................................115/230 VAC ± 10%, 50/60 Hz, single phase
...................................................................................................1.37 at base speed
..................................................................................0.5 - 15 seconds
..................................................................coast to stop - 15 seconds
............................................0 - 4.6 VDC
.....................................................................................>100K ohms
...................................................................................1% base speed or beer
........................................................................................................................60:1
...........................................................................................0.5G maximum
..............................................................................................0.1G maximum
.........................................................................10°C - 55°C
.............................................................................................................................0.46 lbs
UL/cUL Listed Equipment, file # E132235
AC Line Voltage
Form Factor
Acceleraon Time Range
Deceleraon Time Range
Analog Input Range (Signal must be isolated; S1 to S2)
Input Impedance (S1 to S2)
Load Regulaon
Speed Range
Vibraon (0 - 50 Hz)
(>50 Hz)
Surronding Air Temperature Range
Weight
Safety Cerficaons..................................................
* Heat sink kit HSK- 0001 must be used when the connuous output current of either motor is
* over 5 amps or the combined connuous output current is over 6.5 amps.
1/15 - 1 | 1 1/8
1/8 - 2 | 2 1/4
Horsepower
Range
each | both
11.5
Connuous
Armature
Current (Amps)
0 - 90
0 - 180
Armature
Voltage Range
(VDC)
115
230
Line
Voltage
(VAC)
MTU400-11.5
Model
Specifications
5,000 240V Non-me Delay
K5 Fuse
Inverse Time
Circuit Breaker 20AMTU400-11.5
Drive
Model Maximum
Current, kA
Maximum
Voltage, V
Types of Branch Circuit
Protecon
Short Circuit Current Rang Maximum Rang
of Overcurrent
Protecon
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 Naonal
• Electrical Code and all other applicable electrical and safety codes, including the provisions of the
• Occupaonal Safety and Health Act (OSHA), when installing equipment.
• Circuit potenals 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 adjusng the calibraon trim pots. Use approved personal protecon
• 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 protecon, thermal protecon, and enclosure. Follow sound maintenance procedures.
• ACE strongly recommends the installaon of a master power switch in the line voltage input. The
• switch contacts should be rated for 250 VAC and 200% of motor nameplate current.
• Removing AC line power is the only acceptable method for emergency stopping. Do not use
• dynamic braking, decelerang to minimum speed, or coasng to a stop for emergency stopping.
• They may not stop a drive that is malfunconing. Removing AC line power is the only acceptable
• method for emergency stopping.
• Line starng and stopping (applying and removing AC line voltage) is recommended for infrequent
• starng and stopping of a drive only. Dynamic braking, decelerang to minimum speed, or coasng
• to a stop is recommended for frequent starts and stops. Frequent starng 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 jumper sengs only when the drive is disconnected from AC line voltage.
• Under no circumstances should power and logic level wires be bundled together.
• Be sure potenometer tabs do no make contact with the potenometer’s body. Grounding the
•input will cause damage to the drive.
• This product does not have internal solid state motor overload protecon. It does not contain speed-
•sensive overload protecon, thermal memory retenon or provisions to receive and act upon signals
• from remote devices for over temperature protecon. If motor overload protecon is needed in the
•end-use product, it needs to be provided by addional equipment in accordance with NEC standards.
READ ALL SAFETY WARNINGS BEFORE INSTALLING THIS EQUIPMENT
Short-circuit current rang (SCCR) is the maximum short-circuit current that the speed control
can safely withstand when protected by a specific over-current protecve device(s). Adequate
short-circuit current rang is required per NEC.
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Dimensions
S1 1S2S S2S3
MIN-SPEED-MAX
IR COMP
S3
L2 L1
A-/A
A+/A
1
ACC/DEC CUR LIM
A -- I N H IBIT -- B
J504 J505 J507 J506
A-B
IC503
IC502
J503
J502
C507
C508
180 90
C510
C506
C505
C503
D501 D502
U1
R503
R501
C15
Q504 Q503
Q502
R38
MOV502
C501
J501
Y501
C504
A- / B A+ / B
M
TORQUE SPEED
INDEP. RATIO
6 PLACES
.675 [17.2]
2.43 [61.7]
3.175 [80.7]3.175 [80.7]
.186 [5]
180 90
Installation
Mounng
• Drive components are sensive to electrostac discharge. Avoid direct contact with the circuit
• board. Hold the drive by the chassis or heat sink only.
• Protect the drive from dirt, moisture, and accidental contact.
• Provide sufficient room for access to the terminals and calibraon trim pots.
• Mount the drive away from heat sources. Operate the drive within the specified ambient operang
• temperature range.
• Prevent loose connecons by avoiding excessive vibraon of the drive.
• Mount the drive with its board in either a horizontal or vercal plane. Eight 0.19” (5 mm) wide slots
• in the chassis accept #8 pan head screws. Fasten either the large base or the narrow flange of the
• chassis to the subplate.
• The chassis should be earth grounded. Use a star washer beneath the head of at least one of the
• mounng screws to penetrate the chassis surface and to reach bare metal.
Heat Sinking
The MTU400-11.5 requires an addional heat sink when the connuous armature current of either
motor is above 5 amps or the combined connuous output current is over 6.5 amps. Use ACE heat sink
kit part number HSK-0001. Use a thermally conducve heat sink compound (such as Dow Corning 340®
Heat Sink Compound) between the chassis and the heat sink surface for opmal heat transfer.
Wiring
Use 18 - 24 AWG wire for logic 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 praccal to shield power
conductors, ACE recommends shielding all logic-level leads. If shielding of logic-level leads is not
praccal, 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
ACE drives require an external line fuse for protecon. Use fast acng fuses rated for 250 VAC or
higher and 150% of the maximum armature current. Fuse the HOT leg of the AC line when using 115
VAC and both lines when using 230 VAC.
* NOTE: Do not add fuse to L2
unless input voltage is 230 VAC.
Line Input
Connect the AC line power leads to terminals L1 and L2. ACE recommends the use of
a double-pole, single-throw master power switch. The switch should be rated at a
minimum of 250 VAC and 200% of motor current.
Motors
Connect the DC armature leads of motor A to terminals A+/A and A-/A. If motor A does not
spin in the desired direcon, power down the drive and reverse these connecons.
Connect the DC armature leads of motor B to terminals A+/B and A-/B. If motor B does not
spin in the desired direcon, power down the drive and reverse these connecons.
Speed Potenometers
Use 10K ohm, 1/4 W potenometers for speed control. Connect the counter-clockwise
end of the potenometer to S1, the wiper to S2, and the clockwise end to S3. If the
potenometer works inversely of desired funconality, (i.e. to increase motor speed,
you must turn the potenometer counterclockwise), power off the drive and swap
the S1 and S3 connecons.
Inhibit
Short the INHIBIT terminals to coast the motor to zero 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.
Do not use the inhibit for emergency stopping.
Connections
POWER
LOGIC
S1
1
S2S S2S3
MIN-SPEED-MAX
IR COMP
S3
L2 L1
A-/A
A+/A
1
ACC/DEC CUR LIM
A-- INHIBI T - - B
J504J505
J507 J506
A-B
IC503
IC502
J503
J502
C507
C508
180 90
C510
C506
C505
C503
D501 D502
U1
R503
R501
C15
Q504 Q503 Q502
R38
MOV502
C501
J501
Y501
C504
A- / B A+ / B
M
TORQUE SPEED
INDEP. RATIO
180 90
LINE
VOLTAGE
115 / 230 VAC
MASTER
POWER
SWITCH
FUSE
MOTOR A MOTOR B
CLOSE TO
INHIBIT DRIVE
FUSE*
SPEED POT A
OR
MASTER POT
SPEED POT B
OR
RATIO POT
A-B

Copyright 2014 by American Control Electronics® - All rights reserved. No part of this document may be
reproduced or retransmied in any form without wrien permission from American Control Electronics®.
The informaon and technical data in this document are subject to change without noce. American
Control Electronics® makes no warranty of any kind with respect to this material, including, but not
limited to, the implied warranes of its merchantability and fitness for a given purpose. American
Control Electronics® assumes no responsibility for any errors that may appear in this document
and makes no commitment to update or to keep current the informaon in this document.
QSG-0088 rev 0
Calibration
The trim pots in column A are for motor A. The trim pots in column B are for motor B.
Minimum Speed (MIN SPD): In independent mode, the MIN SPD seng determines the minimum
motor speed when the speed adjust potenometer is set for minimum speed. It is factory set for zero
speed. To calibrate the MIN SPD:
1. Set the MIN SPD trim pot full CCW.
2. Set the speed adjust potenometer for minimum speed.
3. Adjust the MIN SPD trim pot unl the desired minimum speed is reached or is just at the
3. threshold of rotaon.
In rao mode, MIN SPD for motor B sets the minimum rao.
Maximum Speed (MAX SPD): In independent mode, the MAX SPD seng determines the maximum
motor speed when the speed adjust potenometer is set for maximum speed. To calibrate the
MAX SPD:
1. Set the MAX SPD trim pot full CCW.
2. Set the speed adjust potenometer for maximum speed.
3. Adjust the MAX SPD trim pot unl the desired maximum speed is reached.
In rao mode, MAX SPD for motor B set the maximum rao.
Check the MIN SPD and MAX SPD adjustments aer recalibrang to verify that the motor runs at the
desired minimum and maximum speed.
Torque (TORQUE): The TORQUE seng determines the maximum torque for accelerang and driving
the motor. To calibrate the TORQUE:
1. With the power disconnected from the drive, connect a DC ammeter in series with the
1. armature.
2. Set the TORQUE trim pot to minimum (full CCW).
3. Set the speed adjust potenometer to maximum speed (full CW).
4. Carefully lock the motor armature. Be sure that the motor is firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the TORQUE trim pot CW unl the armature current is 150% of motor rated
6. armature current. Connuous operaon beyond this rang may damage the motor.
7. Turn the speed adjust potenometer CCW.
8. Remove line power.
9. Remove the stall from the motor.
10. Remove the ammeter in series with the motor armature if it is no longer needed.
IR Compensaon (IR COMP): The IR COMP seng determines the degree to which motor speed is
held constant as the motor load changes. To calibrate the IR COMP:
1. Set the IR COMP trim pot full CCW.
2. Increase the speed adjust potenometer unl the motor runs at midspeed without load. A
2. handheld tachometer may be used to measure motor speed.
3. Load the motor armature to its full load armature current rang. The motor should slow down.
4. While keeping the load on the motor, rotate the IR COMP trim pot unl the motor runs at the
4. speed measured in step 2. If the motor oscillates (overcompensaon), the IR COMP trim pot
4. may be set too high (CW). Turn the IR COMP trim pot CCW to stabilize the motor.
5. Unload the motor.
Acceleraon / Deceleraon (ACC/DEC): The ACC/dec seng determines the me the motor takes to
ramp to a lower or higher speed. ACC/dec is factory set for the shortest acceleraon me (full CCW).
To calibrate the ACC/DEC:
1. Set the speed adjust potenometer for minimum speed.
2. Set the speed adjust potenometer for maximum speed. Measure the me is takes the motor
2. to go from minimum speed to maximum speed.
3. If the me measured in step 2 is not the desired acceleraon me, turn the ACCE/DEC trim pot
3. CW for a longer acceleraon me, or CCW for a shorter acceleraon me. Repeat steps 1
3. through 3 unl the acceleraon me is correct.
MOTOR
A1 A2
FWD
BRAKE
REV
DYNAMIC
BRAKE
RESISTOR
INHIBIT
Reversing with a Dynamic Brake
A dynamic brake may be used when reversing the motor direcon. Use a three pole, three posion
switch rated for at least the armature voltage rang and 150% of the armature current rang. For the
dynamic brake resistor, use a 40 wa minimum, high power, wirewound resistor. Sizing the dynamic
brake resistor depends on load inera, motor voltage, and braking me. Use a lower-value,
higher-waage dynamic brake resistor to stop a motor more rapidly. Recommended values are 15
ohms for a 90 VDC motor and 30 ohms for 180 VDC motor.
The motor must come to a complete stop before changing direcons.
REVERSING
INHIBIT
MOTOR
A2
A1
RUN
BRAKE
DYNAMIC BRAKE
RESISTOR
S3
S2
S1
RUN
DECEL TO
MIN SPEED
10K OHM
SPEED ADJUST
POTENTIOMETER
CW
Decelerate to Minimum Speed
The switch shown below may be used to decelerate a motor to a minimum speed. Closing the switch
between S1 and S2 decelerates the motor from set speed to a minimum speed determined by the MIN
SPD trim pot seng. If the MIN SPD trim pot is set full CCW, the motor decelerates to zero speed when
the switch between S1 and S2 is closed. The DECEL trim pot seng determines the rate at which the
drive decelerates. By opening the switch, the motor accelerates to set speed at a rate determined by
the ACCEL trim pot seng.
Decelerate to Zero Speed (Coast)
See INHIBIT in the CONNECTIONS secon on page 1 for a descripon of wiring and connecon
locaons.
Decelerate to Zero Speed (Dynamic Brake)
Dynamic braking may be used to rapidly stop a motor. For the RUN/BRAKE switch, use a two pole, two
posion switch rated for at least the armature voltage rang and 150% of the armature current rang.
For the dynamic brake resistor, use a 40 wa minimum, high power, wirewound resistor. Sizing the
dynamic brake resistor depends on load inera, motor voltage, and braking me. Use a lower-value,
higher-waage dynamic brake resistor to stop a motor more rapidly. Recommended values are 15 ohms
for a 90 VDC motor and 30 ohms for 180 VDC motor.
DECELERATING & STOPPING
Operation
Speed / Torque
Mode (J502)
Independent or Rao Mode (J501)
Independent Mode: In independent mode, potenometer A control sets the speed for motor A and
potenometer B sets the speed for motor B. For independent mode, jumper pins 1 and 2 on J501.
Rao Mode: In rao mode, potenometer B sets the rao between the motors. For example, if
potenometer B is set for a 2:1 rao, motor B will always run at half the speed of motor A. Use
potenometer A to vary the speed of both motors.
Speed or Torque Mode (J502)
Speed Mode: In speed mode, the drive will do whatever current (torque) is necessary to achieve
the commanded voltage (speed) on the motor. This is the most common setup.
Torque Mode: In torque mode, the drive will do whatever voltage (speed) is necessary to achieve
the commanded current (torque) on the motor. This is used in tensioning applicaons.
Voltage Sengs (J504 and J505)
Set jumpers J504 and J505 for 90 if using a 90 VDC motor with a 115 VAC line input.
Set jumpers J504 and J505 for 180 if using a 180 VDC motor with a 230 VAC line input.
- Verify that no foreign conducve material is present on the printed circuit board.
- Ensure that all switches are properly set.
Independent Mode
1. Turn both speed adjust potenometers full counterclockwise (CCW).
2. Apply AC line voltage.
3. Slowly advance the speed adjust potenometer A clockwise (CW). Motor A slowly accelerates as
the potenometer is turned CW. Connue unl the desired speed is reached.
4. Repeat step 3 with potenometer B for motor B.
5. Remove AC line voltage from the drive to coast the motors to a stop.
Rao Mode
1. Turn both speed adjust potenometers full counterclockwise (CCW).
2. Apply AC line voltage.
3. Slowly advance the speed adjust potenometer A clockwise (CW). Motor A slowly accelerates as
the potenometer is turned CW. Connue unl the desired motor A speed is reached.
4. Slowly advance the speed adjust potenometer B clockwise (CW). Motor B slowly accelerates as
the potenometer is turned CW. Connue unl the desired motor B speed is reached.
5. Now use potenometer A to vary the speed of both motors. The motors should stay at the same
rao.
6. Remove AC line voltage from the drive to coast the motors to a stop.
STARTUP
SELECT SWITCHES
Startup
S1 1S2S S2S3
MIN-SPEED-MAX
IR COMP
S3
L2 L1
A-/A
A+/A
1
ACC/DEC CUR LIM
A -- I N H IBIT -- B
J504 J505 J507 J506
A-B
IC503
IC502
J503
J502
C507
C508
180 90
C510
C506
C505
C503
D501 D502
U1
R503
R501
C15
Q504 Q503
Q502
R38
MOV502
C501
J501
Y501
C504
A- / B A+ / B
M
TORQUE SPEED
INDEP. RATIO
180 90
Indep. / Rao
Mode (J501)
90 / 180
(J504 & J505)