250 0101

250 0101
250-0101r2_readers_spreads.qxd
7/10/01
Models:
MM31002A
MM31610A
MM32002A
SCR, Adjustable Speed Drives
for DC Brush Motors
Page a
User’s Manual
MM30000
Series
4:10 PM
250-0101r2_readers_spreads.qxd
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4:10 PM
Page b
Copyright © 2001 by
Minarik Corporation
All rights reserved. No part of this manual may be reproduced or
transmitted in any form without written permission from Minarik
Corporation. The information and technical data in this manual are
subject to change without notice. Minarik Corporation and its
Divisions make no warranty of any kind with respect to this material,
including, but not limited to, the implied warranties of its
merchantability and fitness for a given purpose. Minarik Corporation
and its Divisions assume no responsibility for any errors that may
appear in this manual and make no commitment to update or to keep
current the information in this manual.
Printed in the United States of America.
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Page i
i
Safety Warnings
• This symbol  denotes an important safety tip or warning.
Please read these instructions carefully before performing any
of the procedures contained in this manual.
•
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.
•
Reduce the chance of an electrical fire, shock, or explosion by
proper grounding, over-current protection, thermal protection, and
enclosure. Follow sound maintenance procedures.

It is possible for a drive to run at full speed as a result
of a component failure. Minarik strongly recommends
the installation of a master switch in the main power input
to stop the drive in an emergency.
Circuit potentials are at 115 VAC 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 trimpots. Use approved
personal protective equipment and insulated tools if
working on this drive with power applied.
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Page ii
ii
Contents
Specifications
1
Dimensions
2
Installation
6
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Shielding guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Speed adjust potentiometer connections . . . . . . . . . . . . . . . . . . . . . . .9
Field output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Heat sinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Line fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
MM31002A and MM32002A series drives . . . . . . . . . . . . . . . . . .12
MM31600A series drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Operation
Before applying power . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive startup and shutdown . . . . . . . . . . . . . . . . . . . . . .
To shut down the drive: . . . . . . . . . . . . . . . . . . . . . . .
Reversing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting and Stopping Methods . . . . . . . . . . . . . . . . . . . .
Line starting and stopping . . . . . . . . . . . . . . . . . . . . .
Decelerating to minimum speed . . . . . . . . . . . . . . . . .
Decelerate to minimum speed using INHIBIT terminals
Dynamic braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration
Calibration procedure . . . . . . . . . .
MINIMUM SPEED (MIN SPD) .
MAXIMUM SPEED (MAX SPD)
REGULATION (IR COMP) . . . .
TORQUE LIMIT (TORQUE) . . .
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20
.20
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.23
.24
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Page iii
Contents
Application Notes
Reversing with dynamic braking . . . . . . . . . . . . . . .
Reversing with a DLC600 . . . . . . . . . . . . . . . . . . . .
Independent Adjustable Speeds . . . . . . . . . . . . . . .
Adjustable speeds using potentiometers in series . .
Multiple fixed speeds . . . . . . . . . . . . . . . . . . . . . . .
RUN/JOG switch . . . . . . . . . . . . . . . . . . . . . . . . . .
RUN/JOG option #1 . . . . . . . . . . . . . . . . . . . . . .
RUN/JOG option #2 . . . . . . . . . . . . . . . . . . . . . .
Leader-follower application . . . . . . . . . . . . . . . . . . .
Single speed potentiometer control of multiple drives
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iii
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32
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.35
.36
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.40
Troubleshooting
41
Before troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Unconditional Warranty
inside back cover
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Page iv
iv
Illustrations
Figure
Figure
Figure
Figure
Figure
Figure
1.
2.
3.
4.
5.
6.
Figure 7.
Figure 8.
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
MM31002A Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
MM32002A Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
MM31610A Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
223-0159 Heat Sink Dimensions . . . . . . . . . . . . . . . . . . . . . . . . .5
Speed Adjust Potentiometer Installation . . . . . . . . . . . . . . . . . . .9
Power, Fuse and Motor Connections for MM31002A and
MM32002A Series Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Voltage Follower Connection for MM31002A and
MM32002A Series Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Power, Fuse and Motor Connections for
MM31600A Series Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Voltage Follower Connection for MM31600A Series Drives . . . .19
Run/Decelerate to Minimum Speed Switch . . . . . . . . . . . . . . . .22
Run/Decelerate to Minimum Speed Switch . . . . . . . . . . . . . . . .23
Dynamic Brake Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Calibration Trimpot Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Typical IR COMP and TORQUE Settings . . . . . . . . . . . . . . . . .31
Reversing Circuit Connection . . . . . . . . . . . . . . . . . . . . . . . . . .32
Reversing with a DLC600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Independent Adjustable Speeds . . . . . . . . . . . . . . . . . . . . . . . .34
Adjustable Fixed Speeds Using Potentiometers in Series . . . . .35
Multiple Fixed Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
RUN/JOG Switch (first wiring option) . . . . . . . . . . . . . . . . . . . .37
RUN/JOG Switch (second wiring option) . . . . . . . . . . . . . . . . . .38
Leader-Follower Application . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Single Speed Potentiometer Control of Multiple Drives . . . . . . .40
250-0101r2_readers_spreads.qxd
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Page v
v
Tables
Table 1.
Table 2.
Table 3.
Field Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Recommended Dynamic Brake Resistor Sizes . . . . . . . . . . . .24
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
250-0101r2_readers_spreads.qxd
Notes
7/10/01
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Page vi
250-0101r2_readers_spreads.qxd
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Page 1
1
Specifications
Line voltage
Horsepower
Armature output
Max arm curr.
Field output
MM31002A
115 VAC
MM32002A
230 VAC
MM31610A
115 VAC
1/8-1/2*
1/4-1*
1/20 - 1/4
0-90 VDC
0-180 VDC
0-90 VDC
5 ADC**
5 ADC**
2.5 ADC
50/100 VDC
100/200 VDC
50 VDC
*Max HP = 1 and max armature current = 10 ADC if mounted on 223-0159 heat
sink.
**Max HP = 2 and max armature current = 10 ADC if mounted on 223-0159
heat sink.
AC Line Voltage Tolerances
-5% +10%, 50/60 Hz, single phase
Maximum Output Field Current
1 ADC
Form Factor
1.37 at base speed
Accel. Time Range
0.5 – 11 seconds
Decel. Time Range
coast to a stop – 13 seconds
Analog Input Voltage Range (signal must be isolated; S1 to S2) 0 – 5 VDC
Input Impedance (S1 to S2)
100K ohms
Load Regulation
1% base speed or better
Vibration
0.5G max (0 – 50 Hz)
0.1G max (>50 Hz)
Ambient Temp. Range
10°C – 55°C
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2
Dimensions
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 1. MM31002A Dimensions
Page 2
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Dimensions
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 2. MM32002A Dimensions
Page 3
3
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Dimensions
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 3. MM31610A Dimensions
Page 4
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Dimensions
ALL DIMENSIONS IN INCHES [MILLIMETERS]
Figure 4. 223-0159 Heat Sink Dimensions
Page 5
5
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Page 6
6
Installation
Mounting
 Warning
Do not install, rewire, or remove this control with
power applied. Doing so may cause fire or serious injury.
Make sure you have read and understood the Safety
Warnings before attempting installation.
The chassis must be earth grounded. Use a star washer
beneath the head of at least one of the mounting screws to
penetrate the anodized chassis surface and to reach bare
metal.
• Drive components are sensitive to electrostatic fields. Avoid
direct contact with the circuit board. Hold drive by the
chassis only.
• Protect the drive from dirt, moisture, and accidental contact.
Provide sufficient room for access to the terminal block and
calibration trimpots.
• Mount the drive away from heat sources. Operate the drive
within the specified ambient operating temperature range.
• Prevent loose connections by avoiding excessive vibration of
the drive.
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Page 7
Installation
Wiring
 Warning
Ꮨ
Do not install, remove, or rewire this equipment with
power applied. Failure to heed this warning may result in
fire, explosion, or serious injury.
Circuit potentials are at 115 or 230 VAC above ground.
To prevent the risk of injury or fatality, avoid direct
contact with the printed circuit board or with circuit
elements.
Do not disconnect any of the motor leads from the drive
unless power is removed or the drive is disabled. Opening
any one motor lead may destroy the drive.
Use 18–22 AWG wire for speed adjust potentiometer wiring.
Use 14–16 AWG wire for AC line (L1, L2), field (F1, F2) and
motor (A1 and A2) wiring.
7
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Page 8
Installation
Shielding guidelines
 Warning
Under no circumstances should power and logic leads be
bundled together. Induced voltage can cause
unpredictable behavior in any electronic device, including
motor controls.
As a general rule, Minarik recommends shielding of all
conductors.
If it is not practical to shield power conductors, Minarik
recommends shielding all logic-level leads. If shielding logic
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 a device on the drive,
ground the shield at the end away from the drive. Do not
ground both ends of the shield.
If the drive continues to pick up noise after grounding the
shield, it may be necessary to add AC line filtering devices, or
to mount the drive in a less noisy environment.
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Page 9
Installation
Speed adjust potentiometer connections
 Warning
Be sure that the potentiometer tabs do not make contact
with the potentiometer enclosure. Grounding the input will
cause damage to the drive.
Install the circular insulating disk between the mounting panel
and the 10K ohm speed adjust potentiometer (see Figure 5).
Mount the speed adjust potentiometer through a 0.38-inch
(10 mm) hole with the hardware provided. Twist the speed
adjust potentiometer wires to avoid picking up unwanted
electrical noise.
Figure 5. Speed Adjust Potentiometer Installation
9
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Page 10
Installation
Field output
 Warning
The field output is for shunt wound motors only. Do not
make any connections to F1 and F2 when using a
permanent magnet motor.
Use 18 AWG wire to connect the field output to a shunt
wound motor. See Table 1 for field output connections.
Table 1. Field Output Connections
Line Voltage
(VAC)
115
115
230
230
Approximate
Field Voltage (VDC)
50
100
100
200
Connect Motor
Field To
F1 and L1
F1 and F2
F1 and L1
F1 and F2
Heat sinking
All MM31600A series drives contain sufficient heat sinking in
their basic configurations. MM31002A and MM32002A series
drives require heat sink kit 223-0159 when the continuous
armature current is above 5 ADC. Refer to Specifications
(page 1) for operating limits when mounted on a heat sink.
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Installation
Page 11
11
Line fusing
Minarik drives require an external fuse for protection. Use fast
acting fuses rated for 250 VAC or higher, and 150% of
maximum motor armature current. Minarik Corporation offers
two fuse kits: part number 050–0066 (1–5A Fuse Kit) and
050–0071 (5–15A Fuse Kit). See Replacement Parts (page 45)
for fuse kit contents.
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Page 12
Installation
Connections
 Warning
Do not connect this equipment with power applied.
Failure to heed this directive may result in fire or serious
injury.
Do not apply 230 VAC line voltage to MM31002A or
MM31600A series drives. This will result in severe
damage to the drive, possible fire and serious injury.
Minarik strongly recommends the installation of a master
power switch in the voltage input line. The switch
contacts should be rated at a minimum of 200% of motor
nameplate current and 250 volts.
MM31002A and MM32002A series drives
Connect the power input leads, external line fuse(s) and DC
motor to the drive’s printed circuit board (PCB) as shown in
Figure 6 (page 14).
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Page 13
Installation
13
Motor connections
Minarik drives supply motor voltage from A1 and A2
terminals. It is assumed throughout this manual that, when A1
is positive with respect to A2 , the motor will rotate clockwise
(CW) while looking at the output shaft protruding from the
front of the motor. If this is opposite of the desired rotation,
simply reverse the wiring of A1 and A2 with each other.
Connect a DC motor to PCB terminals A1 and A2 as shown in
Figure 6. Ensure that the motor voltage rating is consistent
with the drive’s output voltage.
Line fuse
Wire an external, 15-Amp line fuse between the stop switch (if
installed) and the L1 terminal. An additional line fuse should
be installed on L2 if the input voltage is 230 VAC. The line
fuse(s) should be rated at 250 volts.
Power connections
 Warning
Do not apply 230 VAC line voltage to MM31002A or
MM31600A series drives. This will result in severe
damage to the drive, possible fire and serious injury.
Connect the AC line power leads to terminals L1 and L2, or to
a double-throw, single-pole master power switch
(recommended).
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Page 14
Installation
NOTES:
1. DO NOT CONNECT 230 VAC LINE VOLTAGE TO MM31002A SERIES
DRIVES.
2. DO NOT ADD A LINE FUSE TO L2 UNLESS LINE VOLTAGE IS 230 VAC.
3. DO NOT CONNECT FIELD COILS IF USING A PERMANENT-MAGNET
MOTOR. REFER TO TABLE 1 (PAGE 10) FOR ALTERNATE FIELD
CONNECTIONS.
Figure 6. Power, Fuse and Motor Connections for MM31002A
and MM32002A Series Drives
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Page 15
Installation
15
Voltage follower connection
Instead of using a speed adjust potentiometer, the drive may be
wired to follow a 0-5 VDC analog input voltage signal that is
isolated from earth ground (Figure 7). Connect the signal
reference (+) to S2. Connect the signal common (–) to INH2.
Make no connection to S3.
A potentiometer can be used to scale the analog input voltage.
An interface device, such as Minarik model PCM4, may be
used to scale and isolate an analog input voltage.
Figure 7. Voltage Follower Connection for MM31002A and
MM32002A Series Drives
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Page 16
Installation
MM31600A series drives
Connect the power input leads, external line fuse and DC motor
to the drive’s printed circuit board (PCB) as shown in Figure 8
(page 18).
Motor connections
Minarik drives supply motor voltage from A1 and A2
terminals. It is assumed throughout this manual that, when A1
is positive with respect to A2 , the motor will rotate clockwise
(CW) while looking at the output shaft protruding from the
front of the motor. If this is opposite of the desired rotation,
simply reverse the wiring of A1 and A2 with each other.
Connect a DC motor to PCB terminals A1 and A2 as shown in
Figure 8. Ensure that the motor voltage rating is consistent
with the drive’s output voltage.
Line fuse
Wire an external line fuse between the stop switch (if installed)
and the L1 terminal. The line fuse should be rated at 250 volts
and 150 - 200% of maximum motor nameplate current.
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Page 17
Installation
17
Power connections
 Warning
Do not apply 230 VAC line voltage to MM31002A or
MM31600A series drives. This will result in severe
damage to the drive, possible fire and serious injury.
Connect the AC line power leads to terminals L1 and L2, or to
a double-throw, single-pole master power switch
(recommended).
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Page 18
Installation
NOTES:
1. DO NOT CONNECT FIELD COILS IF USING A PERMANENT-MAGNET
MOTOR. REFER TO TABLE 1 (PAGE 10) FOR ALTERNATE FIELD
CONNECTIONS.
Figure 8. Power, Fuse and Motor Connections for MM31600A
Series Drives
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Page 19
Installation
19
Voltage follower connection
Instead of using a speed adjust potentiometer, the drive may be
wired to follow a 0-5 VDC analog input voltage signal that is
isolated from earth ground (Figure 9). Connect the signal
reference (+) to S2. Connect the signal common (–) to INH2.
Make no connection to S1 or S3.
A potentiometer can be used to scale the analog input voltage.
An interface device, such as Minarik model PCM4, may be
used to scale and isolate an analog input voltage.
Figure 9. Voltage Follower Connection for MM31600A
Series Drives
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Page 20
20
Operation
 Warning
Dangerous voltages exist on the drive when it is powered.
BE ALERT. High voltages can cause serious or fatal
injury.
Before applying power
• Verify that no conductive material is present on the printed
circuit board.
• Verify that the AC supply is properly balanced.
Drive startup and shutdown
1. Set the reference signal or speed adjust potentiometer to
minimum speed.
2. Apply AC line voltage.
3. Slowly turn the speed adjust potentiometer or increase the
reference voltage until the desired speed is reached.
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Page 21
Operation
21
To shut down the drive:
To decelerate the motor from set speed to a stop, set the speed
adjust potentiometer to zero speed. To coast the motor from set
speed to a stop, short INHIBIT terminals INH1 and INH2.
Reversing
Refer to Application Notes (page 32) for reversing options, or
contact your Minarik sales representative.
Starting and Stopping Methods
 Warning
For frequent starts and stops, use dynamic braking, inhibit
mode, or decelerating to a stop (shorting S2 to S1). Do
not use any of these methods for emergency stopping.
They may not stop a drive that is malfunctioning.
Removing AC line power (both L1 and L2) is the only
acceptable method for emergency stopping.
For this reason, Minarik strongly recommends the
installation of an emergency stop switch. The switch
contacts should be rated at a minimum of 250 volts and
200% of maximum motor current.
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Operation
Line starting and stopping
When AC line voltage is applied to the drive, the motor
accelerates to the set speed. When AC line voltage is removed,
the motor coasts to a stop. Line stopping (removing AC line
voltage) is recommended for stopping in emergency situations
only. It is not recommended for frequent starting and stopping.
Decelerating to minimum speed
The switch shown in Figure 10 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 trimpot setting. If the MIN SPD
trimpot is set full CCW, the motor decelerates to zero speed
when the switch between S1 and S2 is closed.
Figure 10. Run/Decelerate to Minimum Speed Switch
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Operation
23
Decelerate to minimum speed using INHIBIT
terminals
Short the INHIBIT terminals (INH1 and INH2) to coast the
motor to minimum speed (Figure 11). Reopen the INHIBIT
terminals to accelerate the motor to set speed.
Twist inhibit wires and separate them from other powercarrying 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.
MM31002A/MM32002A
MM31600A
Figure 11. Run/Decelerate to Minimum Speed Switch
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Operation
Dynamic braking
 Warning
Wait for the motor to completely stop before switching it
back to RUN. This will prevent high armature currents
from damaging the motor or drive.
NOTE: For motors rated 1/17 horsepower and lower, a
brake resistor is not necessary since the armature
resistance is high enough to stop the motor without
demagnetization. Replace the dynamic brake resistor with
12 gauge wire.
Dynamic braking may be used to rapidly stop a motor (Figure
12). For the RUN/BRAKE switch, use a double-pole, doublethrow switch rated for at least the maximum DC armature
voltage and maximum braking current.
Table 2. Recommended Dynamic Brake Resistor Sizes
Motor
Armature
Current Rating
Less than 2 ADC
2–3 ADC
3–5 ADC
5–10 ADC
10–17 ADC
Minimum
Dynamic Brake
Resistor Value
1 ohm
5 ohm
10 ohm
20 ohm
40 ohm
Minimum
Dynamic Brake
Resistor Wattage
1W
5W
10W
20W
50W
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Operation
Figure 12. Dynamic Brake Connection
Page 25
25
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26
Calibration
 Warning
Dangerous voltages exist on the drive when it is powered.
When possible, disconnect the voltage input from the
drive before adjusting the trimpots. If the trimpots must
be adjusted with power applied, use insulated tools and the
appropriate personal protection equipment. BE ALERT.
High voltages can cause serious or fatal injury.
MM31002A, MM32002A and MM31600A Series drives have
four user-adjustable trimpots. Each drive is factory calibrated to
its maximum current rating. Readjust the calibration trimpot
settings to accommodate lower current-rated motors. See
Figure 13 for trimpot location.
All adjustments increase with CW rotation and decrease with
CCW rotation. Use a non-metallic screwdriver for calibration.
Each trimpot is identified on the printed circuit board.
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Calibration
MAXIMUM
SPEED
MINIMUM
SPEED
TORQUE
LIMIT
Page 27
27
REGULATION
(IR COMP)
MM31002A AND MM32002A SERIES DRIVES
MAXIMUM
SPEED
MINIMUM
SPEED
TORQUE
LIMIT
MM31600A SERIES DRIVES
Figure 13. Calibration Trimpot Layout
REGULATION
(IR COMP)
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Calibration
Calibration procedure
Calibrate the drive using the following procedure:
1. Set the MIN SPD and MAX SPD trimpots to zero (full
CCW).
2. Set the TORQUE trimpot to maximum (full CW).
3. Set the IR COMP trimpot to midrange (approximate 12
o’clock position).
4. Set the signal input (analog voltage signal or speed adjust
potentiometer) to zero.
5. Apply power to the drive.
6. Calibrate the trimpots as follows:
MINIMUM SPEED (MIN SPD)
The MIN SPD setting determines the motor speed when the
speed adjust potentiometer is turned full CCW. It is factory set
for minimum rated speed.
To calibrate, set the MIN SPD trimpot full CCW. Set the speed
adjust potentiometer or reference signal to minimum. Adjust
the MIN SPD trimpot until the desired minimum motor speed
is reached.
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Calibration
29
MAXIMUM SPEED (MAX SPD)
The MAX SPD setting determines the motor speed when the
speed adjust potentiometer is turned full CW. It is factory set
for maximum rated speed.
To calibrate, set the MAX SPD trimpot full CCW. Set the
speed adjust potentiometer or reference voltage to maximum.
Adjust the MAX SPD trimpot until the desired maximum
motor speed is reached.
REGULATION (IR COMP)
The IR COMP trimpot setting determines the degree to which
motor speed is held constant as the motor load changes. It is
factory set for optimum motor regulation. See Figure 14 (page
31) for typical IR COMP settings.
To calibrate IR COMP (exact calibration):
1. Turn the IR COMP trimpot full CCW.
2. Set the speed adjust potentiometer until the motor runs at
midspeed without load (for example, 900 RPM for an 1800
RPM motor) A hand held tachometer may be used to
measure motor speed.
3. Load the motor armature to its full load armature current
rating. The motor should slow down.
4. While keeping the load on the motor, rotate the IR COMP
trimpot until the motor runs at the speed measured in step 2.
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Calibration
TORQUE LIMIT (TORQUE)
 Warning
Although TORQUE LIMIT is set to 120% of maximum
drive current rating, continuous operation beyond that
rating may damage the motor. If you intend to operate
beyond the rating, contact your Minarik representative for
assistance.
The TORQUE setting determines the maximum torque for
accelerating and driving the motor (Figure 14). TORQUE is
factory set at 120% of maximum drive current. You must
recalibrate the TORQUE setting if using a lower current motor.
1.
With no power applied to the drive, connect a DC
ammeter in series with the motor armature.
2. Set the CURRENT LIMIT trimpot to full CCW.
3. Carefully lock the motor armature. Ensure that the motor
is firmly mounted.
4. Apply line power. The motor should be stopped.
5. Set the speed potentiometer or reference signal to
maximum speed. The motor should remain stopped.
6. Slowly rotate the TORQUE trimpot clockwise (CW) until
the ammeter reads 120% of maximum motor armature
current.
7. Set the speed adjust potentiometer or reference signal to
zero speed.
8. Remove power from the drive.
9. Remove the lock from the motor shaft.
10. Remove the ammeter in series with the motor armature.
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Calibration
Figure 14. Typical IR COMP and TORQUE Settings
(settings may vary by application)
Page 31
31
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32
Application Notes
Reversing with dynamic braking
Always use dynamic braking when reversing the motor
direction (Figure 15). Use a three-pole, three-position switch
rated for at least the maximum DC armature voltage and
maximum braking current. Wait for the motor to stop
completely before switching it to either the forward or reverse
direction. See Dynamic braking (page 24) for more
information.
Figure 15. Reversing Circuit Connection
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Application Notes
Reversing with a DLC600
DIGI-LOK controller DLC600 can be used in a reversing
application. The controller must be inhibited while braking.
Without the inhibit feature, the controller will continue to
regulate, causing overshoot when the DIGI-LOK is switched
back to the drive.
Figure 16 shows the connection of the reversing circuit to an
MM20000 series drive and a DLC600.
NOTE: USE ONLY ONE FEEDBACK SOURCE (OPTICAL
ENCODER OR MAGNETIC PICKUP) AT A TIME
Figure 16. Reversing with a DLC600
33
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Application Notes
Independent Adjustable Speeds
Connect two speed adjust potentiometers with a single pole two
position switch to select between two independent speeds
shown in the forward direction (Figure 17). The parallel
resistance of the potentiometers must be equal to 10K ohms.
The speed adjust potentiometers can be mounted at two
separate operating stations.
Figure 17. Independent Adjustable Speeds
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Application Notes
35
Adjustable speeds using potentiometers in
series
Replace the speed adjust potentiometer with a single-pole,
multi-position switch, and two or more potentiometers in
series, with a total series resistance of 10K ohms. Figure 18
shows a connection for fixed high and low speed adjust
potentiometers.
Figure 18. Adjustable Fixed Speeds
Using Potentiometers in Series
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Application Notes
Multiple fixed speeds
Replace the speed adjust potentiometer with series resistors
with a total series resistance of 10K ohms (Figure 19). Add a
single pole, multi-position switch with the correct number of
positions for the desired number of fixed speeds.
Figure 19. Multiple Fixed Speeds
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Application Notes
RUN/JOG switch
Using a RUN/JOG switch is recommended in applications
where quick stopping is not needed and frequent jogging is
required. Use a single pole, two position switch for the
RUN/JOG switch, and a single pole, normally closed,
momentary operated pushbutton for the JOG pushbutton.
RUN/JOG option #1
In the first wiring option (see Figure 20), connect the
RUN/JOG switch and JOG pushbutton to the inhibit plug as
shown below. The motor coasts to a stop when the RUN/JOG
switch is set to JOG. Press the JOG pushbutton to jog the
motor. Return the RUN/JOG switch to RUN for normal
operation.
Figure 20. RUN/JOG Switch (first wiring option)
37
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Application Notes
RUN/JOG option #2
In the second wiring option, connect the RUN/JOG switch and
the JOG pushbutton as shown in Figure 21. When the
RUN/JOG switch is set to JOG, the motor decelerates to
minimum speed (minimum speed is determined by the MIN
SPD trimpot setting). Press the JOG pushbutton to jog the
motor. Return the RUN/JOG switch to RUN for normal
operation.
Figure 21. RUN/JOG Switch (second wiring option)
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Application Notes
Page 39
39
Leader-follower application
In this application, use a PCM4 to monitor the speed of the
leader motor (Figure 22). The PCM4 isolates the leader motor
from the follower drive, and outputs a voltage proportional to
the leader motor armature voltage. The follower drive uses this
voltage reference to set the speed of the follower motor. An
optional ratio potentiometer may be used to scale the PCM4
output voltage.
Figure 22. Leader-Follower Application
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Application Notes
Single speed potentiometer control of
multiple drives
Multiple drives can be controlled with a single speed adjust
potentiometer using a PCM4 at the input of each drive to
provide isolation (Figure 23). Optional ratio potentiometers can
be used to scale the PCM4 output voltage, allowing
independent control of each drive.
Figure 23. Single Speed Potentiometer Control
of Multiple Drives
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41
Troubleshooting

Warning
Dangerous voltages exist on the drive when it is powered.
When possible, disconnect the drive while troubleshooting.
High voltages can cause serious or fatal injury.
Before troubleshooting
Perform the following steps before starting any procedure in
this section:
• Disconnect AC line voltage from the drive.
• Check the drive closely for damaged components.
• Check that no conductive or other foreign material has
become lodged on the printed circuit board.
• Verify that every connection is correct and in good condition.
• Verify that there are no short circuits or grounded
connections.
• Check that the drive’s rated armature outputs are consistent
with the motor ratings.
For additional assistance, contact your local Minarik
distributor, or the factory direct:
(800) MINARIK (646-2745) (phone) or (800) 394-6334 (fax).
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Troubleshooting
Symptom
Line fuse blows
Line fuse does not
blow, but the motor
does not run
Possible
Causes
Suggested
Solutions
1. Line fuses are the wrong
size.
1. Check that line fuses
are the proper size.
2. Motor cable or armature
is shorted to ground.
2. Check motor cable and
armature for shorts.
3. Nuisance tripping caused
by a combination of
ambient conditions and
high-current spikes.
3. Add a blower to cool
the drive components;
decrease TORQUE
settings, or resize motor
and drive for actual load
demand, or check for
incorrectly aligned
mechanical components
or “jams”. See page 30
for information on
adjusting the TORQUE
trimpot.
4. Field circuit is shorted.
4. Send in drive to
Minarik repair
department.
1. Speed adjust
potentiometer or reference
signal is set to zero speed.
1. Increase speed adjust
potentiometer or
reference signal setting.
2. Speed adjust
potentiometer or reference
signal connections are
open.
2. Check that the speed
adjust potentiometer or
reference signal
connections are not open.
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Troubleshooting
Symptom
Line fuse does not
blow, but the motor
does not run (cont.)
Possible
Causes
43
Suggested
Solutions
3. Drive is overloaded.
3. Verify that the motor is
not jammed. Increase
TORQUE setting (page
30)
4. Drive is not receiving
AC line voltage.
4. Apply AC line voltage
to L1 and L2.
5. Motor is not connected.
5. Connect motor to A1
and A2.
1. MIN SPD and MAX
SPD settings are too high.
1. Recalibrate MIN SPD
(page 28) and MAX SPD
(page 29).
2. Field connections are
loose (shunt-wound motors
only)
2. Check field
connections
Motor runs too slow or
too fast
MIN SPD and MAX SPD
are not calibrated.
1. Recalibrate MIN SPD
(page 28) and MAX SPD
(page 29).
Motor will not reach
the desired speed.
1. MAX SPD setting is too
low.
1. Increase MAX SPD
setting (page 29).
2. IR COMP setting is too
low.
2. Increase IR COMP
setting (page 29).
Motor runs too fast at
maximum speed
setting
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Troubleshooting
Symptom
Possible
Causes
Suggested
Solutions
Motor will not reach
the desired speed
(cont.)
3. Motor is overloaded.
3. Check motor load.
Resize the motor and
drive if necessary.
Motor pulsates or
surges under load
1. IR COMP is set too
high.
1. Adjust the IR COMP
setting slightly CCW
until the motor speed
stabilizes (page 29).
2. Control is in current
limit mode.
2. Check that motor is of
sufficient horsepower and
amperage.
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Page 45
Troubleshooting
45
Replacement Parts
Replacement parts are available from Minarik Corporation and
its distributors for this drive series.
Table 3. Replacement Parts
Model No.
Symbol
Description
Minarik®
P/N
MM31002A
C503
D501–503
SCR501–502
R501
R502
T501
22 uF, 25 VDC Capacitor
D8020L Diode
S8020L High-power SCR
0.01 Ohm, 5W Resistor
5 Kohm, 5W Resistor
Pulse Transformer
Chassis
10K Ohm Pot Kit
011-0046
071-0039
072-0043
032-0065
032-0028
230-0004
222-0130
202-0058
MM32002A
Same as MM31002A except:
R502-503
5 Kohm, 5W Resistor
Chassis
032-0088
222-0079
Same as MM31002A except:
D501–502
1N5406 Diode
R501
0.05 Ohm, 3W Resistor
T501
Pulse Transformer
Chassis
071-0007
032-0073
230-0004
221-0059
MM31610A
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Troubleshooting
FUSE KIT CONTENTS
1 -5A FUSE KIT (050-0066)
2 EA 1 AMP 3AG FAST-ACTING FUSE
2 EA 1-1/2 AMP 3AG FAST-ACTING
2 EA 3 AMP 3AG FAST-ACTING FUSE
2 EA 5 AMP 3AG FAST-ACTING FUSE
050-0042
050-0026
050-0021
050-0022
5 - 15A FUSE KIT (050-0071)
2 EA 5 AMP 3AG FAST-ACTING FUSE
2 EA 8 AMP 3AG FAST-ACTING FUSE
2 EA 10 AMP 3AB NORMAL-BLO FUSE
2 EA 15 AMP 3AB NORMAL-BLO FUSE
050-0022
050-0059
050-0024
050-0018
202-0058 POTENTIOMETER KIT CONTENTS
1 EA 10K OHM ±10 % POTENTIOMETER, 2W
1 EA 3/8-32 X 1/2 NUT
1 EA 3/8IN INT TOOTH LOCK WASHER
1 EA POT INSULATING WASHER
9 EA NON-INSULATED FEMALE TAB 1/4IN
2 EA QUICK DISCONNECT 18-22 AWG
120-0047
151-0007
152-0007
156-0022
163-0028
163-0072
Page 46
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Page 47
Unconditional Warranty
A. Warranty
Minarik Corporation (referred to as "the Corporation") warrants that its products will be
free from defects in workmanship and material for twelve (12) months or 3,000 hours,
whichever comes first, from date of manufacture thereof. Within this warranty period,
the Corporation will repair or replace, at its sole discretion, such products that are
returned to Minarik Corporation, 901 East Thompson Avenue, Glendale, CA 912012011 USA.
This warranty applies only to standard catalog products, and does not apply to specials.
Any returns for special controls will be evaluated on a case-by-case basis. The
Corporation is not responsible for removal, installation, or any other incidental expenses
incurred in shipping the product to and from the repair point.
B. Disclaimer
The provisions of Paragraph A are the Corporation's sole obligation and exclude all
other warranties of merchantability for use, express or implied. The Corporation further
disclaims any responsibility whatsoever to the customer or to any other person for
injury to the person or damage or loss of property of value caused by any product that
has been subject to misuse, negligence, or accident, or misapplied or modified by
unauthorized persons or improperly installed.
C. Limitations of Liability
In the event of any claim for breach of any of the Corporation's obligations, whether
express or implied, and particularly of any other claim or breech of warranty contained
in Paragraph A, or of any other warranties, express or implied, or claim of liability that
might, despite Paragraph B, be decided against the Corporation by lawful authority, the
Corporation shall under no circumstances be liable for any consequential damages,
losses, or expense arising in connection with the use of, or inability to use, the
Corporation's product for any purpose whatsoever.
An adjustment made under warranty does not void the warranty, nor does it imply an
extension of the original 12-month warranty period. Products serviced and/or parts
replaced on a no-charge basis during the warranty period carry the unexpired portion of
the original warranty only.
If for any reason any of the foregoing provisions shall be ineffective, the Corporation's
liability for damages arising out of its manufacture or sale of equipment, or use thereof,
whether such liability is based on warranty, contract, negligence, strict liability in tort,
or otherwise, shall not in any event exceed the full purchase price of such equipment.
Any action against the Corporation based upon any liability or obligation arising
hereunder or under any law applicable to the sale of equipment or the use thereof, must
be commenced within one year after the cause of such action arises.
250-0101r2_readers_spreads.qxd
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901 East Thompson Avenue
Glendale, California 91201-2011
Tel: (800) MINARIK (646-2745)
Fax: (800) 394-6334
www.minarikcorp.com
Document Number 250-0101, Revision 2
Printed in the U.S.A – 6/01
$12.00 North America, $13.00 Outside North America
Page 48
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