USER’S MANUAL
DC Series
Pulse-Width Modulated,
Adjustable Speed Drives
for DC Brush Motors
Models:
DC16-12/24
DC60-12/24
DC60-36/48
The Minarik DC Series drives are chassis drives that accept a
DC input voltage and output a DC power voltage to control the
speed of a low voltage motor. The speed may be controlled
with a potentiometer or an external voltage signal.
Standard Features:
• Provides smooth variable capability for mobile equipment.
• Maintains variable speed control as batteries discharge.
• Adjustable min speed, max speed, IR compensation, current
limit, and accel.
• Inhibit terminal permits optional start-stop without breaking
battery lines.
• Speed potentiometer included.
• Increases range or running time of battery operated
equipment through high efficiency.
• Power LED gives a visual indication when power is applied to
the drive.
• Jumper reconnectable for low or high voltage.
Copyright © 2002 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.
MVD062702
i
SHOCKAVOID
OID
ON
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. Minarik assumes the qualified
technician is intimate with the dangers involving batteries,
especially lead-acid type. This manual presupposes that you
have taken all the necessary precautions to prevent a potentially
fatal accident involving such batteries, and have followed all
standard electrical precautions.
•
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.
This drive is isolated from 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.
TI
ii
Contents
Safety Warnings i
Specifications 1
Dimensions 2
Installation 4
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Heat sinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Fuse / Circuit breaker protection . . . . . . . . . . . . . . . . . . . . . . . . . .7
Jumper 501 (JP501) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Speed adjust potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Voltage follower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Operation 15
Before applying power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Startup and shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Starting and stopping methods . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Inhibit terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Power LED (IL501) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Calibration 21
MINIMUM SPEED (MIN SPD) . . . . . . . . . . . . . . . . . . . . . . . . . . .22
MAXIMUM SPEED (MAX SPD) . . . . . . . . . . . . . . . . . . . . . . . . . .22
ACCELERATION (ACCEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
IR COMPENSATION (IR COMP) . . . . . . . . . . . . . . . . . . . . . . . .24
CURRENT LIMIT (CUR LIMIT) . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Application Notes 27
Multiple fixed speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Adjustable speeds using potentiometers in series . . . . . . . . . . .28
Independent adjustable speeds . . . . . . . . . . . . . . . . . . . . . . . . . .29
RUN/JOG switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Reversing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Troubleshooting 33
Before troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Unconditional Warranty inside back cover
iii
iv
Illustrations
Figure 1. DC16-12/24 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Figure 2. DC-12/24 and DC60-36/48 Dimensions . . . . . . . . . . . . . . . . .3
Figure 3. Heatsink mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Figure 4. Jumper 501 (JP501) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Figure 5. Speed Adjust Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . .10
Figure 6. Speed Adjust Potentiometer Connections . . . . . . . . . . . . . .10
Figure 7. Power, Fuse and Motor Armature Connections . . . . . . . . . .13
Figure 8. Voltage Follower Connections . . . . . . . . . . . . . . . . . . . . . . .14
Figure 9. Run/Decelerate to Minimum Speed Switch . . . . . . . . . . . . .18
Figure 10. Inhibit Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Figure 11. Power LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Figure 12. Calibration Trimpot Layout . . . . . . . . . . . . . . . . . . . . . . . . .21
Figure 13. Approximate CUR LIMIT Settings . . . . . . . . . . . . . . . . . . . .26
Figure 14. Multiple Fixed Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Figure 15. Adjustable Fixed Speeds Using
Potentiometers in Series . . . . . . . . . . . . . . . . . . . . . . . . . .28
Figure 16. Independent Adjustable Speeds . . . . . . . . . . . . . . . . . . . . .29
Figure 17. RUN/JOG Switch Connection to
Speed Adjust Potentiometer . . . . . . . . . . . . . . . . . . . . . . . .30
Figure 18. Reversing hookup diagram . . . . . . . . . . . . . . . . . . . . . . . . .32
Tables
Table 1. Wire Gauge/Length Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Specifications
Max. Max.
Armature Armature DC Voltage
Current Voltage
Model (Amps DC) (VDC) (VDC)
DC16-12/24 16
1
DC60-12/24 60 12 or 24
DC60-36/48 60 36 or 48
Acceleration Time Range 0.5 – 10 seconds
Deceleration Time 0.5 seconds
Analog Input Voltage Range (signal must be isolated; S1 to S2) 0 – 10 VDC
Input Impedance (S1 to S2) 200KΩ
Speed Regulation (% of base speed) 1%
Speed Range 80:1
Form Factor 1.01
Ambient Operating Temperature Range 10°C – 40°C
Weight
DC16-12/24 1.7 lbs.
DC60-12/24 3.6 lbs.
DC60-36/48 3.6 lbs.
1 At 40°C ambient. No additional heat sink is necessary.
2 Or up to 95% of available battery voltage.
3 The lower maximum armature voltage is selectable by connecting a jumper to
pins 2 and 3 of JP501 (see page 8).
12 or 24
3
2
2
2
Input Range
10–32
10–32
32–50
1
2
3
1
4
2
501
501
501
A2
+V
NPUT
O
R
A1
[
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[
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[
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[
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[
]
[
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[
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[
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[
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[
]
[
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]
[
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[
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[
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Dimensions
INCHES
94
3.70
18
.70
L
WE
IL
50
50
50
50
P
P
4
13
0.50
9
.36
61
2.41
3.74 [95
113
4.44
[MILLIMETERS]
ALL DIMENSIONS IN
140
5.50
5
18
.19
0.70
24
.95
56
2.20
160
6.30
8
.30
175
6.90
Figure 1. DC16-12/24 Dimensions
R501
1
50
50
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
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[
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[
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[
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[
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[
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[
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Dimensions
3
INCHES
[MILLIMETERS]
ALL DIMENSIONS IN
160
.30
51
1.99
5
.19
76
.00
2
1
1
WER
502
504
501
503
L
1
2
P
4
.30 [160]
50
1.96
198
174
.87
7.78
22
.88
12
.49
91
.74 [19]
.60
.38 [162]
175
4
.15
26
82
1.01
Figure 2. DC-12/24 and DC60-36/48 Dimensions
.21
.90
4
Installation
Mounting
Warning
Do not install, rewire, or remove this control with input
power applied. Doing so may cause fire or serious injury.
Make sure you have read and understood the Safety
Warnings on page i before attempting installation.
• Drive components are sensitive to electrostatic fields. Avoid
contact with the circuit board directly. 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 other heat sources. Operate the drive
within the specified ambient operating temperature range.
• Prevent loose connections by avoiding excessive vibration of the
drive.
• Mount drive with its board in either a horizontal or vertical plane.
Six 0.19 in. (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.
Wiring
Warning
Do not install, remove, or rewire this equipment with power
applied. Failure to heed this warning may result in fire,
explosion, or serious injury.
This drive is isolated from earth 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. Opening any one motor lead
may destroy the drive.
This drive is not diode-protected from reverse battery
voltage. You must assure that POS (+) is wired to +VDC
IN and NEG (–) is wired to –VDC IN.
Use 18 AWG wire for speed adjust potentiometer wiring.
• Size the DC voltage input and motor wire according to the
following chart:
Table 1. Wire Gauge/Length Chart
Armature Current Wire Gauge Maximum Wire
(amps) (AWG) Length (feet)
0 – 19 14 8
20 – 32 10 10
60 8 10
Installation
5
6
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 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 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
mount the drive in a less noisy environment.
Logic wires from other input devices, such as motion controllers
and PLL velocity controllers, must be separated from power lines in
the same manner as the logic I/O on this drive.
Installation
Heat sinking
DC60-12/24 and DC60-36/48 drives are pre-mounted on heat sink
part number 223-0434. For optimum heat transfer, mount the drive
with heatsink fins standing vertically as shown in Figure 3 below.
Heatsink Fins
Figure 3. Heatsink mounting
Fuse / Circuit breaker protection
All Minarik drives should be protected by a fuse or circuit breaker.
Use a fast acting fuse or circuit breaker rated for approximately
200% of the maximum armature current and armature voltage.
Connect the fuse or circuit breaker to the VDC+ IN side of the DC
voltage input.
7
8
A1
A2
C
UT
C
UT
502
501
501
Q503
Q501
Q504
501
Q502
501
JP501
3
R
D
TACCEL
D
Installation
Jumper 501 (JP501)
Minarik DC series drives are shipped with JP501 open (no jumper
applied). This allows you to use 24 VDC motors with the DC1612/24 and DC60-12/24, or 48 VDC motors with the DC60-36/48.
To use lower voltage DC motors (12 VDC or 36 VDC, respectively)
jumper pins 2 and 3 with the jumper provided. See Figure 4 for
the location of JP501.
DC16-12/24 = 16 Amp 12/24 VDC
DC60-12/24 = 60 Amp 12/24 VDC
Jumper 501
DC60-36/48 = 60 Amp 36/48 VDC
D
INP
VD
INP
VD
TB
MIN SP
MAX SP
IR COMPR LIMI
POWE
1
IL
L
R
Figure 4. Jumper 501 (JP501)
Installation
Speed adjust potentiometer
Warning
Be sure that the potentiometer tabs do not make contact with
the potentiometer enclosure. Grounding the input will cause
damage to the drive.
Mount the speed adjust potentiometer through a 0.38 in. (10 mm)
hole with the hardware provided (see Figure 5 on Page 10). Install
the circular insulating disk between the panel and the 10K ohm
speed adjust potentiometer.
Twist the speed adjust potentiometer wire to avoid picking up
unwanted electrical noise. If speed adjust potentiometer wires are
longer than 18 in. (457 mm), use shielded cable. Keep speed
adjust potentiometer wires separate from power leads (L1, L2, A1,
A2).
9
10
SO501
L
JP501
3
O
D
TACCEL
D
0K O
D
R
JUST
R
SK
R
R
UT
E
Installation
N
TA
WASHE
1
PEE
POTENTIOMETE
UNT THROUGH A 0.38 IN. (10 MM) HOL
PEED AD
POTENTIOMETE
INSULATING DI
Figure 5. Speed Adjust Potentiometer
HM
IN SP
W
W
MAX SP
IR COMPR LIMI
I
P
Figure 6. Speed Adjust Potentiometer Connections
Installation
Connections
Warning
Do not connect this equipment with power applied.
Failure to heed this directive may result in fire or serious
injury.
Minarik strongly recommends the installation of a
master power switch in the voltage input line, as shown
in Figure 7, page 13. The switch contacts should be rated
at a minimum of 200% of motor nameplate current and 150%
of the input voltage.
Power, fuse and motor connections
Connect the power input leads, an external line fuse and a motor to
the drive’s printed circuit board (PCB) as shown in Figure 7, page
13.
Motor
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.
11
12
Installation
Connect a DC motor to PCB terminals A1 and A2 as shown in
Figure 7, page 13. Ensure that the motor voltage rating is
consistent with the drive’s output voltage.
Power input
Warning
This drive is not diode-protected from reverse battery voltage.
You must assure that POS (+) is wired to +VDC IN and NEG
(–) is wired to –VDC IN.
Connect the DC power leads to terminals + VDC IN and - VDC IN,
or to a single-throw, single-pole master power switch as shown in
Figure 7, page 13 (recommended).
Fuse
Wire a power input fuse between the stop switch (if installed) and
the + VDC IN terminal on the circuit board. The fuse should be
rated at 150% of input voltage and 150 - 200% of maximum motor
nameplate current.
)
)
USE
CY
OP
OR
E
502
501
D
501
501
501
A2
C
UT
C
U
R
A1
T
INP
-VD
1
IL
WE
L
R
INP
VD
TB
EMERGEN
F
MOT
ARMATUR
Figure 7. Power, Fuse and Motor Armature Connections
Installation
T
13
NEG (-
POS (+
14
C
)
)
3501
0
D
PACCEL
D
Installation
Voltage follower
Instead of using a speed adjust potentiometer, the drive may be
wired to follow an isolated (floating, or differential) 0–10 VDC signal
that is isolated from earth ground (Figure 8). Connect the signal
input (+) to S2. Connect the signal common (–) to S1. Make no
connection to S3. Apotentiometer can be used to scale the analog
input voltage.
50
5
IGNAL COMMON (-
- 10 VD
IGNAL INPUT (+
MIN SP
MAX SP
IR COM
Figure 8. Voltage Follower Connections
Operation
Warning
Dangerous voltages exist on the drive when it is powered,
and up to 30 seconds after power is removed and the motor
stops. BE ALERT. High voltages can cause serious or fatal
injury. For your safety, use personal protective equipment
(PPE) when operating this drive.
Before applying power
• Verify that no conductive material is present on the printed circuit
board.
• Ensure that all jumpers are properly set.
15
16
Operation
Startup and shutdown
To start the drive:
1. Turn the speed adjust potentiometer full counterclockwise
(CCW), or set the voltage signal to zero.
2. Apply DC voltage input.
3. Slowly advance the speed adjust potentiometer clockwise (CW),
or increase the voltage signal. The motor slowly accelerates as
the potentiometer is turned CW or the voltage signal is
increased. Continue until the desired speed is reached.
4. Remove DC voltage input from the drive to coast the motor to a
stop.
If the motor or drive does not perform as described, disconnect the
DC voltage input immediately. Refer to the Troubleshooting section
(page 33) for further assistance.
Operation
Starting and stopping methods
Warning!
Decelerating to minimum speed or coasting to a stop is
recommended for frequent starts and stops. Do not use any of
these methods for emergency stopping. They may not stop a
drive that is malfunctioning. Removing DC line power is the
only acceptable method for emergency stopping.
For this reason, Minarik strongly recommends installing an
emergency stop switch (see figure 7, page 13).
Frequent decelerating to minimum speed produces high torque.
This may cause damage to motors, especially gearmotors that are
not properly sized for the application.
Automatic restart upon power restoration
All drives automatically run to set speed when power is applied.
Line starting and line stopping
Line starting and line stopping (applying and removing DC voltage
input) is recommended for infrequent starting and stopping of a
drive only. When DC voltage input is applied to the drive, the motor
accelerates to the speed set by the speed adjust potentiometer.
When DC voltage input is removed, the motor coasts to a stop.
17
18
Operation
Decelerating to minimum speed
A single pole, single throw switch may be used to decelerate a
motor to minimum speed (see Figure 9). Close the switch between
S1 and S2 to decelerate the motor from set speed to minimum
speed. Open the switch to accelerate the motor from minimum
speed to set speed. The ACCELtrimpot setting determines the rate
at which the motor accelerates.
S3
S2
S1
RUN
DECEL TO
MIN SPEED
CW
10K OHM
SPEED ADJUST
POTENTIOMETER
Figure 9. Run/Decelerate to Minimum Speed Switch
JP501
D
TACCEL
D
Operation
Inhibit terminals
Short the INHIBIT terminals to coast the motor to zero speed (see
Figure 10 for INHIBIT terminal location). Reopen the INHIBIT
terminals to accelerate the motor to set speed.
Twist inhibit wires and separate them from other 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. See Shielding Guidelines, page 6.
19
MIN SP
MAX SP
IR COMPR LIMI
Figure 10. Inhibit Terminals
20
A1
A2
C
UT
C
UT
502
501
501
Q503
Q501
Q504
501
Q502
501
JP501
3
R
D
TACCEL
D
Operation
Power LED (IL501)
The power LED (IL501) lights whenever DC line voltage is applied
to the drive. See Figure 11 below for the power LEDlocation.
D
1
IL
POWE
L
MIN SP
IR COMPR LIMI
MAX SP
Power LED
(IL501)
R
INP
VD
INP
VD
TB
Figure 11. Power LED
Calibration
502
D
TACCEL
D
21
Warning
Dangerous voltages exist on the drive when it is powered,
and up to 30 seconds after power is removed and the motor
stops. 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.
Each drive is factory calibrated to its maximum armature voltage
and current rating. Readjust the calibration trimpot settings to
accommodate a motor with a lower armature voltage and current
rating.
All adjustments increase with clockwise rotation (CW), and
decrease with counter-clockwise rotation (CCW). Use a nonmetallic screwdriver for calibration. Each trimpot is identified on the
printed circuit board (see Figure 12).
MINIMUM
SPEED
MIN SP
ACCELERATION
MAX SP
MAXIMUM
SPEED
IR COMPR LIMI
IR
COMPENSATION
CURRENT
R
LIMIT
Figure 12. Calibration Trimpot Layout
22
Calibration
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 zero
speed.
To calibrate MIN SPD:
1. Set the MAX SPD trimpot to full CW.
2. Set the MIN SPD trimpot to full CCW.
3. Turn the main speed adjust potentiometer to full CCW. If an
input voltage is used instead of a speed adjust potentiometer,
set the input signal to minimum.
4. Adjust the MIN SPD trimpot until the desired minimum motor
speed is reached.
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 MAX SPD:
1. Set the MAX SPD trimpot full CCW.
2. Apply power to the drive and turn the speed adjust
potentiometer full CW. If an input voltage signal is used instead
of a speed adjust pot, set the input signal to maximum.
3. Adjust the MAX SPD trimpot until the desired maximum motor
speed is reached.
Calibration
ACCELERATION (ACCEL)
The ACCEL setting determines the time the motor takes to
accelerate to a higher speed. See Specifications on page 1 for
approximate acceleration times. The ACCELsetting is factory set to
its minimum value (full CCW).
To calibrate ACCEL:
1. Set the ACCEL trimpot full CCW.
2. Apply power to the drive and turn the main speed adjust
potentiometer full CW. If an input voltage signal is used instead
of a speed adjust pot, set the input signal to maximum. Note
the time that the drive takes to accelerate to the desired speed.
3. Adjust the ACCEL trimpot until the desired acceleration time is
reached. Turn the ACCEL trimpot CW to increase the
acceleration time, and CCW to decrease the acceleration time.
23
24
Calibration
IR COMPENSATION (IR COMP)
The IR COMP setting determines the degree to which motor speed
is held constant as the motor load changes. It is factory set for
optimum motor regulation.
Use the following procedure to recalibrate the IR COMP setting :
1. Set the IR COMP trimpot to minimum (full CCW).
2. Rotate the speed adjust potentiometer until the motor runs at
midspeed without load (for example, 900 RPM for an 1800 RPM
motor). Ahand 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 IRCOMP
trimpot until the motor runs at the speed measured in step 2. If
the motor oscillates (overcompensation), the IR COMP trimpot
may be set too high (CW). Turn the IR COMP trimpot CCW to
stabilize the motor.
5. Unload the motor.
Calibration
CURRENT LIMIT (CUR LIMIT)
Warning
CURRENT LIMIT should be set to 120% of motor nameplate
current rating. Continuous operation beyond this setting may
damage the motor. If you intend to operate beyond the rating,
contact your Minarik representative.
The CURRENT LIMIT setting determines the maximum armature
current output of the drive.
Recalibrate the CUR LIMIT setting when a lower current limit
is required. Refer to the CUR LIMIT settings in Figure 13, page 26,
or recalibrate using the following procedure:
1. With the power disconnected from the control, connect a DC
ammeter in series with the armature.
2. Set the CUR LIMIT trimpot to minimum (full CCW).
3. Set the speed adjust potentiometer to maximum (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 CUR LIMIT trimpot CW slowly until the
armature current is 120% of motor rated armature current.
7. Set the speed adjust potentiometer, or input voltage to
minimum.
8. Remove the power from the drive and unlock the motor shaft.
9. Remove the ammeter in series with the motor armature if it is
no longer needed and re-apply power to the drive.
25
26
0A
T
T
0A
00A
5A10A
6A
8
4
4
Calibration
C16-12/2
1
2
R LIMI
-12/2
1
12
R LIMI
C60-36/4
12
Figure 13. Approximate CUR LIMIT Settings
S
CE
S
Application Notes
Multiple fixed speeds
Replace the speed adjust potentiometer with series resistors
with a total series resistance of 10K ohms (Figure 14). Add a
single pole, multi-position switch with the correct number of
positions for the desired number of fixed speeds.
TOTAL SERIE
ESISTAN
10K OHM
Figure 14. Multiple Fixed Speeds
27
K
M
K
M
H
D
W
D
28
Application Notes
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 15 shows a
connection for fixed high and low speed adjust potentiometers.
HIG
SPEE
S2
LO
PEE
Figure 15. Adjustable Fixed Speeds Using Potentiometers in Series
5
H
5
OH
Application Notes
1
2
0K
0K
M
Independent adjustable speeds
Replace the speed adjust potentiometer with a single pole, multiposition switch, and two or more potentiometers in parallel, with a
total parallel resistance of 10K ohms. Figure 16 shows the
connection of two independent speed adjust potentiometers that
can be mounted at two separate operating stations.
PEED
29
PEED
2
HM
2
H
Figure 16. Independent Adjustable Speeds
30
M
OT
ON
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
normally closed, momentary operated pushbutton for the JOG
pushbutton (see Figure 17). When the RUN/JOG switch is set to
JOG, the motor decelerates to minimum speed. Press the JOG
pushbutton to jog the motor. Return the RUN/JOG switch to RUN
for normal operation.
W
10K OH
PEED P
PUSHBUTT
Figure 17. RUN/JOG Switch Connection to Speed Adjust
Potentiometer
Reversing
Warning
Do not operate the control outside the recommended
input ±10%.
Relays may be used in place of a switch, but a neutral position
must be provided to prevent plug reversing (see Figure 18,
page 32). DO NOT CHANGE DIRECTIONS WHILE THE
MOTOR IS STILL RUNNING. Plug reversing the motor (not
allowing the motor to come to a stop before reversing) will
cause excessively high currents to flow in the armature circuit,
which can damage the control and/or motor and is not
recommended.
Application Notes
31
32
pp
C
O
f
S
h
A1
C
UT
T
501
S
D
CC
L
T
CO
P
S
D
O
R
501
2
501
4
1
3
501
A2
pp
S
S
h
O
O
O
GH
O
R
O
OR
Application Notes
lied
Customer Su
CAUTION
of 12 ga. and a maximum of 6 ga.
Motor and battery wire must be a minimum
witc
T
P
f
witc
lied
enter-
PDT
enter-Blocked
T
M
Customer Su
INP
+VDC INPU
-VD
TB
T HI
L
WE
IL
50
50
50
50
P
P
R LIMI
M
IR
P
MAX
E
A
P
MIN
T WIPE
P
WP
T L
P
Figure 18. Reversing hookup diagram
Troubleshooting
Warning
Dangerous voltages exist on the drive when it is powered, and
up to 30 seconds after power is removed and the motor stops.
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:
1. Disconnect DC voltage input from the drive.
2. Check the drive closely for damaged components.
3. Check that no conductive or other foreign material has become
lodged on the printed circuit board.
4. Verify that all connections are correct and in good condition.
5. Verify that there are no short circuits or grounded connections.
6. Check that the drive’s rated armature voltage and current is
consistent with the motor ratings.
33
For additional assistance, contact your local Minarik distributor, or
the factory direct:
Phone: (800) MINARIK or (800) 646-2745
Fax: (800) 394-6334
34
Troubleshooting
Symptom Possible
Causes
Suggested
Solutions
Line fuse blows
Line fuse does not blow,
but the motor does not run
1. Line fuses are the wrong
size.
2. Motor cable or armature
is shorted to ground.
3. Nuisance tripping caused
by a combination of
ambient conditions and
high-current spikes.
1. Speed adjust pot or
reference voltage is set
to zero speed.
2. Speed adjust pot or
reference voltage
connections are open.
3. Drive is overloaded.
4. Drive is not receiving
DC line voltage.
1. Check that line fuses
are the correct size.
2. Check motor cable and
armature for shorts.
3. Add a blower to cool
the drive components;
decrease CUR LIMIT
settings, or resize motor
and drive for actual load
demand, or check for
incorrectly aligned
mechanical components
for “jams”. See page 25
for information on
adjusting the CUR LIMIT
trimpot.
1. Increase speed adjust
pot or reference voltage
setting.
2. Check that the speed
adjust pot or reference
voltage connections are
not open.
3. Verify that the motor is
not jammed. Increase
CURR LIMIT setting.
4. Apply DC line voltage
to +VDC and -VDC.
Symptom Possible
Causes
Troubleshooting
Suggested
Solutions
35
Line fuse does not blow,
but the motor does not run
(cont.)
Motor runs too fast at
maximum speed setting
Motor runs too slow or
too fast
Motor will not reach the
desired speed.
Motor pulsates or surges
under load.
5. Motor is not connected.
1. MIN SPD and MAX
SPD settings are too
high.
1. MIN SPD and MAX
SPD are not calibrated.
1. MAX SPD setting is too
low.
2. IR COMP setting is too
low.
3. Motor is overloaded.
1. IR COMP is set too
high.
2. Control is in current
limit mode.
5. Connect motor to A1
and A2.
1. Recalibrate MIN SPD
and MAX SPD.
1. Recalibrate MIN SPD
and MAX SPD
1. Increase MAX SPD
setting.
2. Increase IR COMP
setting.
3. Check motor load.
Resize the motor and
drive if necessary.
1. Adjust the IR COMP
setting slightly CCW
until the motor speed
stabilizes.
2. Check that motor and
drive are of sufficient
horsepower and
amperage.
36
Notes
37
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 91201-2011
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 breech 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.
14300 DeLaTour Drive
South Beloit, Illinois 61080
Phone: (800) MINARIK or (800) 646-2745
Fax: (800) 394-6334 or (815) 624-6960
Document Number 250–0338, Revision 0
Printed in the U.S.A – 08/04
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