Minarik Drives MM300 Series Users Manual

MM300 Series

MODELS:

MM311U
MM301U
MM301A

launaM s’resU

Isolated Input, Dual Voltage, Variable Speed SCR

Drives for Brush Motors

Copyright © 2013 by

Minarik Drives

All rights reserved. No part of this manual may be reproduced or transmitted in any form

without written permission from Minarik Drives. The information and technical data in this

manual are subject to change without notice. Minarik Drives 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 Drives 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.

I

Safety Warnings

This symbol denotes an important safety tip or warning. Please read these sec-

tions carefully prior to performing any of the instructions contained in that section.

• Have a qualified electrical maintenance 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 mainte-

nance procedures.

• It is possible for a drive to run at full speed as a result of a component failure.

Please ensure that a master switch has been placed in the AC line to stop the drive

in an emergency.

• This drive is isolated from earth ground. 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.

II

Contents

Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Shielding Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Chassis Drives (MM301U, MM311U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Heatsinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Line Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Speed adjust potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Cage-clamp terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Power Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Field Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

START/STOP pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Tachometer feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Voltage or current follower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Slide switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Enclosed Drives (MM301A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Heatsinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Line Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Before applying power (all models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Chassis Drives (MM301U, MM311U) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

III

Speed adjust potentiometer input with START/STOP pushbuttons . . . . . . . . . . . .25

Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Line starting and line stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Decelerating to minimum speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Dynamic braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Dynamic brake resistor value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Enclosed Drive Operating Modes (Manual / Auto)

Enclosed Drive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Drive Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

MINIMUM SPEED (MIN SPD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

MAXIMUM SPEED (MAX SPD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

CURRENT LIMIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

IR COMPENSATION (IR COMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

ACCELERATION (ACCEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

DECELERATION (DECEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

TACH VOLTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Multiple fixed speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Adjustable speeds using potentiometers in series . . . . . . . . . . . . . . . . . . . . . . . . .43

Independent adjustable speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Reversing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

RUN/JOG switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Reversing with a DIGI=LOK Controller, Model DLC600 . . . . . . . . . . . . . . . . . . . . .47

. . . . . . . . . . . . . . . . . . . . . . . . .30

IV

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

54Unconditional Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V

Illustrations

Fig. Description Page

1. MM301U and MM311U Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2. MM301A Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3. MM300 Series Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

4. Speed Adjust Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

5. Cage-Clamp Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

6. MM301U and MM311U AC Line, Motor and Field Connections . . . . . . . . . . . . .13

7. Signal Follower Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

8. Slide Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

9. MM301A Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

10. Current Limit and Power LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

11. Run/Decelerate to Minimum Speed Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

12. Dynamic Brake Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

13. Calibration Trimpot Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

14. Typical CURRENT LIMIT, and IR COMP Settings for MM300 Series

(actual settings may vary wtih each application) . . . . . . . . . . . . . . . . . . . . . . . .38

15. Mutiple Fixed Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

16. Adjustable Fixed Speeds Using Potentiometers in Series . . . . . . . . . . . . . . . . .43

17. Independent Adjustable Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

18. Reversing Circuit Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

19. RUN/JOG Switch Connection to Speed Adjust Potentiometer . . . . . . . . . . . . . .46

20. Reversing with a DLC600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

21. MM300 Series Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

VI

Tables

Fig. Description Page

1. Recommended Line Fuse Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

2. Field Output Connections for Chassis Drives . . . . . . . . . . . . . . . . . . . . . . . . . . .14

3. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

1

Specifications

Max.
Armature HP Range HP Range
Current with 115 VAC with 230 VAC

Model (Amps DC) Applied Applied

MM311U 3.0

MM301U 10.0

AC Line Voltage 115 VAC or 230 V AC, 50 or 60 Hz, 1 Phase

Armature Voltage (115 VAC Input) 0–90 VDC

Armature Voltage (230 VAC Input) 0–180 VDC

Form Factor 1.37 at base speed

Field Voltage (115 VAC) 50 VDC (F1 to L1); 100 VDC (F1 to F2)

Field Voltage (230 VAC) 100 VDC (F1 to L1); 200 VDC (F1 to F2)

Maximum Field Current 1 ADC

Acceleration Time Range (with no load) 1-11 seconds

Deceleration Time Range (with no load) 1-11 seconds

Analog Input Voltage Range (S1 to S2) 0-10 VDC or 4-20 mADC

Input Impedance (S1 to S2) >100K ohms

Load Regulation (% of base speed)

with Armature Feedback 1% or better

with Tachogenerator Feedback 0.1%

Vibration 0.5G max. (0-50 Hz); 0.1G max. (>50 Hz)

MM301A 10.0

1/20–1/8 1/10–1/4

1/4–1 1/2–2

1/4–1 1/2–2

2 Specifications

Ambient Temperature Range

Open Chassis 10°C-55°C

Cased 10°C-45°C

Weight

Open Chassis 2.1 lbs (953 grams)

Cased 7.75 lbs (3. 5 kilograms)

Tachogenerator Feedback Voltage Range 7-50 VDC per 1000RPM

Short-circuit current rating (SCCR) is the maximum short-circuit
current that the speed control can safely withstand when
protected by a specific over-current protective device(s).

The rating for models rated more than 1 HP is tabulated below:

Drive
Model No.

Short Circuit
Current Rating

Maximum
Current,
kA

MM301U 10,000

MM301A

10,000

Types of Branch
Circuit Protection

Maximum
Voltage,
V

240V

240V 30A

Non-time
Delay K5
Fuse

Non-time
Delay K5
Fuse

Inverse
Time
Circuit
Breaker

Inverse
Time
Circuit
Breaker

Maximum
Rating of
Overcurrent
Protection

30A

Dimensions

3

0.19 [5]

4.46 [113]

3.00 [76]

0.70 [18]

1.90 [48]

SIX (6) MOUNTING SLOTS

0.18 [5] WIDE x 0.30 [8] DEEP

ALL DIMENSIONS IN INCHES [MILLIMETERS]

Figure 1. MM301U and MM311U Dimensions

0.60 [15]

0.77 [19]

0.98 [25]

6.30 [160]

6.90 [175]

4

0

[6]

]

]

9.80

[

]

[

]

]

]

]

0

]

7.00

[

]

0.12

[3]

31

[59]

8

[

]

5.5

[

]

Dimensions

10.22
260

6.90[175

6.30[160

1.4
[36

249

178

.22

1

140

4.7
121

2.

1.50[38

1.45[37

1.50[38

THREE 0.88 [22] KNOCKOUTS

ALL DIMENSIONS IN INCHES [MILLIMETERS]

Figure 2. MM301A Dimensions

E

S

(

)

GE

S

S

CU

T

)

POWER LE

D

(

)

GE

S

S

E

S

GE

S

CH

CU

GE

SIG

OR

S

CH

UM

D

S

S

JUS

R

S

S

OP

S

OR

S

GE

R

OR

)

P

R

CU

T

R

L

S

(

)

(

)

(

)

(

)

(

)

(

)

(

)

(

)

IL502

RRENT LIMI

LED(IL501

LINE VOLTA

ELECTORSWITCHE

SW501, SW502

AC LIN
FUSE

FU501-FU502

IRCOM

TRIMMER POTENTIOMETE

P506

RRENT LIMI

TRIMMER POTENTIOMETE

P505

ACCEL AND DECE

TRIMMER POTENTIOMETER

P503, P504

Layout

FEEDBACKSELECT

SWITCH(SW505

TACHOGENERATOR VOLTA

TRIMMER POTENTIOMETE

PEED AD

10-TURN MAXIM

AND MINIMUMSPEE

TRIMMER POTENTIOMETER

P501, P502

RRENT/VOLTA

NALSELECT

P507

TACHOGENERAT

TERMINAL BLOCK

T POTENTIOMETE

TERMINAL BLOCK

TART/ST

TERMINAL BLOCK

WIT

SW504

5

AC LINE VOLTA
TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

ARMATUR

ARMATURE VOLTA

ELECTORSWIT

SW503

Figure 3. MM300 Series Layout

6

Wiring

Use 12 AWG wire for the AC line voltage (L1 and L2), motor armature (A1 and A2),

and dynamic brake resistor (if used). Use 18 AWG wire for logic (field output, speed

adjust potentiometer, tachogenerator, etc.)

Twist logic wires to avoid picking up unwanted electrical noise. Use shielded cable if

wires are longer than 12 inches (30 cm).

Do not bundle logic wires with power carrying wires. This can cause erratic operation.

Keep logic wires in a conduit separated by at least 2 inches from power carrying

wires. Do not allow logic wires to travel in parallel to power carrying wires for more

than 1 inch.

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.

Installation

7

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 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, it may be necessary

to add AC line filtering devices, or to mount the drive in a less noisy environment.

Logic wires from other input devices, such as motion controllers and PLL velocity con-

trollers, must be separated from power lines in the same manner as the logic I/O on

this drive.

8

Installation

Chassis Drives (MM301U, MM311U)

Mounting

Mount the drive with its board in either a horizontal or vertical plane. Four 0.188 inch (4.8
mm) wide slots in the chassis accept #8 pan head screws.

The chassis units do not have to be earth grounded. If you choose to ground the chas-

sis, use a star washer beneath the head of at least one of the mounting screws to pen-

etrate the anodized chassis surface and to reach bare metal.

Drive components are sensitive to electrostatic fields. Avoid contact with the circuit

board directly. Hold the 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.

Observe the following guidelines when installing an isolation transformer:

• A power disconnecting device must be installed between the power line and primary

of the transformer.

• If the power disconnecting device is a circuit breaker, the circuit breaker trip rating

must be coordinated with the in-rush current (10-12 times full load current) of the

transformer.

9

Installation

Heatsinking

The MM301U and MM311U contain sufficient heat sinking in its original configuration.

No additional heat sinking is necessary when installed in accordance with the guide-

lines specified in this instruction manual. The chassis plate acts as the thermal

heatsink.

Line fusing

MM300 Series drives have line fuses mounted on fuse holders 501 and 502 (FU501

and FU502). See the Replacement Parts section for preinstalled line fuse size. When

replacing the line fuses, use fast acting fuses rated for 250 VAC or higher, and at

least 200% of the armature current. See Figure 3 (page 5) for fuse holder location,

and Table 1 for recommended line fuse sizes.

Table 1. Recommended Line Fuse Sizes

90 VDC Motor 180 VDC Motor Max. DC Armature AC Line Fuse

Horsepower Horsepower Current (amps) Size (amps)

1/20 1/10 0.5 3

1/15 1/8 0.8 3

1/8 1/4 1.5 5

1/6 1/3 1.7 5

1/4 1/2 2.6 8

1/3 3/4 3.5 8

1/2 1 5.0 10

3/4 1 1/2 7.6 15

Minarik Drives offers a 63 mA pico fuse (part number 050-0081) which protects the transformer

and logic.

10

Installation

Speed adjust potentiometer

Install the circular insulating disk between the mounting panel and the 10K ohm speed

adjust potentiometer (see Figure 4). Mount the speed adjust potentiometer through a

0.38 inch (10 mm) hole with the hardware provided. Twist the speed adjust poten-

tiometer wire to avoid picking up unwanted electrical noise. If potentiometer leads are

longer than 18 inches (46 cm), use shielded cable.

Alternate speed adjust potentiometer connections may be found in the Application

Notes section of this user guide.

Note: The user may choose to install a 5K ohm speed adjust potentiometer; howev-

er, the MIN SPD and MAX SPD trimpots must be recalibrated if the 5K ohm poten-

tiometer is used.

Figure 4. Speed Adjust Potentiometer

11

Installation

Cage-clamp terminals

Logic connections are made to a cage-clamp terminals. To insert a wire into the cage-

clamp terminal:

1. Press down on the lever arm using a

small screwdriver.

2. Insert wire into the wire clamp

3. Release the lever arm to clamp wire.

Figure 5. Cage-Clamp Terminal

12

Installation

Connections

Motor

Connect a motor to terminals A1 and A2 as shown in Figure 6 (page 13). Ensure that

the motor voltage rating is consistent with the drive’s output voltage.

Minarik drives supply motor voltage from A1 and A2 terminals (TB501). 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.

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.

Installation

NOTE: DO NOT make

any connections to

F1 and F2 if using a

permanent magnet motor.

SPEED
ADJUST
POTENTIOMETER
10K OHMS

N.O.

N.C.

Start

Stop

NOTE: IF PUSHBUTTONS ARE NOT
USED, CONNECT B1 TO B3.

115

VAC

230
VAC

POWER
SWITCH

AC LINE

VOLTAGE

NOTES

1. L1 IS THE HOT TERMINAL.

2. L2/115 IS THE NEUTRAL TERMINAL FOR 115 VAC INPUT.

3. TYPICAL FIELD CONNECTIONS SHOWN. REFER TO TABLE 2 (PAGE 14)
FOR ALTERNATE FIELD CONNECTIONS.

FIELD OUTPUT
SHUNT-WOUND
MOTORS ONLY

SEE NOTE 4

TACHOGENERATOR

(OPTIONAL)

13

Figure 6. MM301U and MM311U AC Line, Motor and Field Connections

14

Installation

Power Input

Connect the AC line power leads to terminals L1 and L2 and install a master power

switch in the voltage input line as shown in Figure 6 (page 13). The switch contacts

should be rated at a minimum of 250 volts and 200% of maximum drive current.

Field output

The field output is for shunt wound motors only. Do not make any connections to

F1 and F2 (TB501) when using a permanent magnet motor. See Table 2 for field

output connections.

Table 2. Field Output Connections for Chassis Drives

Line Voltage Approximate Connect Motor

(VAC) Field Voltage (VDC) Field To

115 50 F1 and L1

115 100 F1 and F2

230 100 F1 and L1

230 200 F1 and F2

15

Installation

START/STOP pushbuttons

Pushbutton operation of the MM300 Series requires a momentary normally open STOP

pushbutton be wired to terminals B2 and B3 and a momentary normally closed START

pushbutton wired to terminals B1 and B2. These switches must be used together and

are not included with the drive. The B1, B2 and B3 terminals are on terminal block

TB502.

If the START/STOP pushbuttons are not used, wire a jumper between terminals B1

and B3 to bypass the latching circuit. The drive will then operate in a power-up start

mode. See Figure 6 (page 13) for these switch connections.

Tachometer feedback

Using tachometer feedback improves speed regulation from approximately 1% of

motor base speed to approximately 0.1% of motor base speed. Use tachometers

rated from 7 VDC per 1000 RPM to 50 VDC per 1000 RPM. Connect the tachometer

to terminals T1 and T2 of terminal block 502 (TB502). Place SW504 in the TACH

position. See Figure 6 (page 13) for tachometer connections. The TACH trimpot trim-

pot must be adjusted prior to operating with tachometer feedback. Refer to the

Calibration section for instructions on calibrating the TACH trimpot.

16

Installation

Voltage or current follower

Instead of using a speed adjust potentiometer, MM300 Series drives may be wired to

follow an analog input signal (see Figure 6 for connections). This input signal can be

in the form of voltage (0-10 VDC) or current (4-20 mA). Because these drives have

built in isolation the input signal can be either grounded or ungrounded. The signal

slide switch must also be set for current or voltage input (see Slide switches section).

Figure 7. Signal Follower Connection

17

Installation

Slide switches

LINE VOLTAGE (SW501 and SW502)

Select the appropriate line voltage: 115 for 115 VAC line voltage, or 230 for 230 VAC

line voltage.

MOTOR (SW503)

Select the maximum armature voltage: 90V for 90 VDC motors, or 180V for 180 VDC

motors.

SIGNAL (SW504)

Select the input signal being used: CURR for current input signal, or VOLT for voltage

input signal or speed adjust potentiometer input.

Warning

Change slide switch settings only when the
drive is disconnected from the AC line volt­age. Make sure both line voltage and motor
switches are set to their correct position. If
the switches are improperly set to a lower
voltage position, the motor will not run at
full voltage and may cause transformer
damage. If the switches are improperly set
to a higher voltage position, the motor will
over speed, which may cause motor damage.

18

GE

S

CT

S

S

(

CKS

CT

S

)

O

GE

S

CT

(

)

SIGNAL

SOURCE

S

(

)

Installation

FEEDBACK (SW505)

Select the appropriate feedback option: ARMATURE for armature feedback, or TACH

for tachometer feedback.

See Figure 8 for all slide switch locations.

VOLTA

ELE

WITCHE

SW501,SW502)

ARMATUREA

V

LTA

ELE

SW503

ELECT

SW504

Figure 8. Slide Switches

FEEDBA

WITCH(SW505

ELE

19

Installation

Enclosed drive

Mounting

The NEMA 4X enclosed drive comes with 0.88 inch (22mm) conduit knockout holes at

the bottom of the enclosure. The units may be vertically wall mounted using the four

0.19 inch (5 mm) slotted holes on the attached heat sink. For motor loads less than

5 ADC, the drive may be bench mounted horizontally, or operated without mounting.

Mount the drive as follows:

1. Install the mounting screws.

2. For access to the terminal strip, turn the slotted screw on the front cover

counterclockwise until it is free from the enclosure. The right side of the

cover is hinged to the enclosure. Pull the slotted screw to open the enclosure.

3. Carefully remove the conduit knockouts by tapping them into the enclosure

and twisting them off with pliers.

4. Install conduit hardware through the 0.88 inch (22 mm) knockout holes.

Connect external wiring to the terminal block.

5. Grasp the slotted screw and tilt the front cover back into place. Avoid

pinching any wires between the front cover and the enclosure.

6. Turn the slotted screw clockwise until tight to secure the front cover.

7. Set the P OWER s witch to th e OFF posit ion be fore applyi ng AC

line voltage.

20

Installation

Heat sinking

The enclosed MM300 Series drive contains sufficient heat sinking in its basic configuration.

No additional heat sinking is necessary when installed in accordance with the guidelines

specified in this manual.

Line fusing

WARNING: Most code requires that upstream

branch protection be provided to protect input
power wiring. Failure to observe this precaution
could result in severe bodily injury or loss of life.

This MM300U Series has 15-amp line fuses preinstalled on fuse holders 501 and 502

(FU501 and FU502). When replacing the line fuses, use fast acting fuses rated for

250 VAC or higher. See Figure 3 (page 5) for fuse holder location and Table 1

(page 9) for recommended line fuse sizes.

21

Installation

Connections

WARNING: A single fault like a power device

short may cause motor rotation when in the
stop mode. The user is responsible for assur­ing safe conditions for operating personal by
providing suitable guards, audio or visual al-

arms, or other devices. Failure to observe
these precautions could result in bodily injury.

WARNING: To provide the motor with over­load protection, local, national, and inter­national codes (e.g.,NEC/CEC)
a motor thermostat, internal
installed or an electronic thermal
load relay, sized to protect the motor, instal­led between the motor and the drives’ out­put terminals.

require that

to the motor, be

motor over-

WARNING

:

Do not connect this equipment
with power applied. Failure to observe this
precaution may result in fire or serious injury.

22

Installation

Connections

Motor

Minarik Drives motor sp eed co ntrols 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.

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.

Connect a motor to terminals A1 and A2 as shown in Figure 9 (page 23). Ensure that

the motor voltage rating is consistent with the drive’s output voltage.

Installation

1 2 3 4 5 6 7 8 9

23

EARTH GROUND
(GREEN SCREW)

1L

2L )032(

230 VAC

SEE NOTES 1,

2, AND 3

115 VAC

115/230 VAC

LINE VOLTAGE INPUT

)511(

1F

2
L

FIELD

COIL

SEE NOTE 4

1A

2
F

2A

MOC

–

MOTOR

ARMATURE

+

COM (

–) REF (+)

0 – 10 VDC OR

4 – 20 mADC

INPUT SIGNAL

1. L1 IS THE HOT TERMINAL.

2. L2/115 IS THE NEUTRAL TERMINAL FOR 115 VAC INPUT.

3. L2/230 IS THE NEUTRAL TERMINAL FOR 230 VAC INPUT.

4. TYPICAL FIELD CONNECTIONS SHOWN. REFER TO TABLE 2 (PAGE 14)

5. REMOVE THE 510 OHM INTERNAL RESISTOR CONNECTED BETWEEN
TERMINALS 8 & 9 IF YOU ARE USING A 0-10V REMOTE INPUT SIGNAL

Figure 9. MM301A AC Line, Motor and Field Connections

FER

24

Before applying power

1. Set LINE VOLTAGE SELECT switches SW501 and SW502 to either 115V or 230V

to match the AC line voltage.

2. Set ARMATURE VOLTAGE SELECT switch SW503 to either 90V or 180V to

match the maximum armature voltage.

3. Set SIGNAL SELECT switch SW504 to CURR if using a 4-20 mADC current sig-

nal; set it to VOLT if using a 0-10VDC voltage signal or the speed adjust poten-

tiometer.

4. Verify that no conductive material is present on the printed circuit board.

5. If using a 90 VDC or 130 VDC motor with 230 VAC line voltage, derate the name-

plate motor torque by at least 30%. The form factor will increase beyond the typi-

cal value, causing increased motor heating. Contact the factory for details.

Chassis Drives (MM301U, MM311U)

Speed adjust potentiometer input, no START/STOP pushbutton:

It is necessary to wire a jumper between B1 and B3 if no START/STOP switches are

to be used.

1. Turn the speed adjust potentiometer full counterclockwise (CCW).

Operation

25

Operation

2. Apply AC line voltage.

3. Slowly advance the speed adjust potentiometer clockwise (CW). The motor slowly

accelerates as the potentiometer is turned CW. Continue until the desired speed is

reached.

4. Remove AC line voltage to coast the motor to a stop.

Speed adjust potentiometer input with START/STOP pushbuttons:

1. Turn the speed adjust potentiometer full counterclockwise

(CCW).

2. Apply AC line voltage.

3. Press the START pushbutton.

4. Slowly advance the speed adjust potentiometer clockwise (CW). The motor accel-

erates as the potentiometer is turned clockwise. Continue until desired speed is

reached.

5. Press STOP pushbutton to coast motor to a stop.

Analog signal input, no START/STOP pushbuttons:

It is necessary to wire a jumper between B1 and B3 if no START/STOP switches are

to be used.

1. Set the analog signal so that it is at its lowest level

(0V or 4mA).

2. Apply AC line voltage.

3. Slowly increase the analog signal. The motor accelerates as the signal is increased.

Continue increasing signal until desired speed is reached.

4. Remove AC line voltage to coast the motor to a stop.

26

Operation

Analog signal input with START/STOP pushbuttons:

1. Set the analog signal so that it is at its lowest level

(0V or 4mA).

2. Apply AC line voltage.

3. Press the START pushbutton.

4. Slowly increase the analog signal and press the start pushbutton. The motor accel-

erates as the signal is increased. Continue increasing signal until desired speed is

reached.

5. Press STOP pushbutton to coast motor to a stop.

Diagnostic LEDs

MM300 Series drives are equipped with two diagnostic LEDs (see Figure 10 for LED

location). The red current limit LED turns on whenever the drives reaches current limit

and stays off whenever the drive is not in current limit (normal operation). The green

power LED turns on whenever AC line voltage is applied to the drive and stays off

whenever there is no AC line voltage applied to the drive.

Figure 10. Current Limit and Power LEDs

27

Operation

Decelerating to minimum speed

The circuit shown in Figure 11 (page 28) may be used to decelerate a motor to a mini-

mum 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. The DECEL trimpot setting determines the rate at which the drive

decelerates. By opening the switch the motor accelerates to set speed at a rate deter-

mined by the ACCEL trimpot setting.

Line starting and line stopping

Line starting and line stopping (applying and removing AC line voltage) is recom-

mended for infrequent starting and stopping of a drive only. When AC line voltage is

applied to the drive and a START is commanded, the motor accelerates to the speed

set by the speed adjust potentiometer or analog input signal. When AC line voltage is

removed, the motor coasts to a stop.

28

Operation

Figure 11. Run/Decelerate to Minimum Speed Switch

Dynamic Braking

Dynamic braking may be used to rapidly stop a motor (Figure 12, page 29). For the

RUN/BRAKE switch, use a three pole, double throw switch rated for at least the maxi-

mum DC armature voltage, 15 amps. For the dynamic brake resistor, use a 40 Watt

minimum, high power, wirewound resistor.

Dynamic Brake Resistor Value

Sizing the dynamic brake resistor depends on load inertia, motor voltage and braking

time. Use a lower-value, higher wattage dynamic brake resistor to stop a motor more

rapidly. A good starting point is a 40 Ohm, 40 Watt.

29

Operation

Figure 12. Dynamic Brake Connection

Warning

Wait for the motor to completely stop before
switching it back to RUN. This will prevent
high armature currents from damaging the
motor.

MM300 Series Drive

A1 A2

DYNAMIC

BRAKE

RESIS

N BRAKE

RU

MOTOR

B1 B3

TOR

30 Operation

Enclosed drive operating modes

WARNING: If you run the drive in AUTO mode, you

must recalibrate the MIN SPD trimpot to offset any
motor drift caused by the input signal. Refer to the
Calibration section (page 32) for more information.

The mode selector switch on the drive, mounted on its cover, provides the option of

operating in either MANUAL (mounted speed potentiometer) or AUTO (external

signal source) mode.

Manual mode

Set the mode selector switch to MANUAL if you wish to control the motor speed using

the speed adjust potentiometer mounted on the drive cover. In MANUAL mode, the

motor speed is controlled by the speed adjust knob located on the drive cover. Setting

the speed adjust knob to zero causes the motor to run at the minimum speed

dictated by the MIN SPD trimpot setting. Refer to the Calibration section (page 32) for

information on calibrating the MIN SPD trimpot. Set SIGNAL SELECT switch SW504

to VOLT when in manual mode.

Auto mode

IMPORTANT: When switching between MANUAL and AUTO modes, you must balance the

MIN SPD trimpot for both opera ting modes.

Set the mode selector switch to AUTO if you wish to follow an external signal, independent

of the speed adjust knob setting. In AUTO mode, the drive will control motor speed in

proportion to either a 0 – 10 VDC analog voltage or a 4 – 20 mADC current signal. You

must set select switch SW504 to either VOLT to follow a 0 -10 VDC analog voltage or

to CURR to follow a 4 - 20 mADC current signal.

Enclosed drive operation

WARNING: For frequent starts and stops, open

the B1 and B3, decelerate to a minimum speed, or
apply a dynamic brake to the motor. 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.

WARNING: Frequent starting and stopping can
produce high torque. This may cause damage to
motors, especially gearmotors that are not properly
sized for the application.

To run the motor:

1. Set the speed adjust potentiometer to “0” (full CCW).

2. Apply AC line voltage.

3. Set the POWER switch to the ON position.

4. Slowly advance the speed adjust potentiometer clockwise (CW), or increase the

external reference signal. The motor will slowly accelerate to follow the speed

adjust potentiometer or external reference signal. Continue until the desired

speed is reached.

To stop the motor:

1. Rotate the speed adjust potentiomter to zero (full

CCW), or set the external reference signal to zero.

The motor will slowly decelerate until minimum speed

is reached.

2. Set the POWER switch on the front panel to OFF.

31Operation

32

Calibration

MM300 Series drives have seven user adjustable trimpots. Each drive is factory cali-

brated to its maximum current rating. Readjust the calibration trimpot settings to

accommodate lower current rated motors.

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. Refer to Figure 13 for trimpot layouts.

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
serious or fatal injury.

voltages can cause

WARNING

: The control circuit is at line potential

when the drive is energized. Exercise extreme
caution as hazardous voltage exists.

33Calibration

IR COMP CURRENT

LIMIT

TACH

VOLTS

DECELERATION

ACCELERATION

MINIMUM SPEED

MAXIMUM SPEED

13. Calibration Trimpot Layout

34

Calibration

Drive Calibration Procedure

Prepare the MM300 series drive for calibration as follows. This procedure applies to

both chassis and enclosed drives.

1. Ensure that no power is applied to the drive.

2. If you use an enclosed drive, you must open the drive cover to gain access to the

trimpots. Turn the slotted screw on the front cover counterclockwise until it is free

from the enclosure. The right side of the cover is hinged to the enclosure. Pull the

slotted screw to open the enclosure.

3. Set all trimpots except CURRENT LIMIT and TACH VOLTS full counterclockwise

(CCW).

4. Set the CURRENT LIMIT trimpot full clockwise (CW).

5. Make no adjustment to the TACH VOLTS trimpot unless tachometer feedback is

used. If you use tachometer feedback, set the TACH VOLTS trimpot to the center

of travel (12 o’clock position).

6. Adjust the trimpots in the following order:

a. MINIMUM SPEED (MIN SPD)

b. MAXIMUM SPEED (MAX SPD)

c. CURRENT LIMIT

d. IR COMPENSATION (IR COMP)

e. ACCELERATION (ACCEL)

f. DECELERATION (DECEL)

g. TACH VOLTS (if used)

Calibration

MINIMUM SPEED (MIN SPD)

The MIN SPD setting determines the motor speed when the speed adjust potentiome-

ter or input signal is set for minimum speed. It is factory set to zero speed.

To calibrate MIN SPD:

1. Turn the speed adjust potentiometer full CCW or set the input signal for minimum

voltage or current.

2. Adjust the MIN SPD trimpot until the motor has stopped, or is running at the

desired minimum speed.

MAXIMUM SPEED (MAX SPD)

The MAX SPD setting determines the motor speed when the speed adjust potentiome-

ter or input signal is set for maximum speed. It is factory set for maximum rated motor

speed.

To calibrate MAX SPD:

1. Set the MAX SPD trimpot full CCW.

2. Turn the speed adjust potentiometer full CW or set the input signal for maximum

speed.

3. Adjust the MAX SPD trimpot until the desired maximum motor speed is reached.

35

Note: Check the MIN SPD and MAX SPD settings after recalibrating to verify that the

motor runs at the desired minimum and maximum speeds.

36

Calibration

CURRENT LIMIT

The CURRENT LIMIT setting determines the maximum armature current output of the

drive. It is factory set at 120% of rated motor current.

To calibrate CURRENT LIMIT, refer to Figure 13 (page 33), or use the following proce-

dure:

1. With the power disconnected from the drive, connect a DC ammeter in series with

the armature.

2. Set the CURRENT LIMIT trimpot to minimum (full CCW).

3. Lock the motor armature. Be sure that the motor is firmly mounted.

4. Connect power to the drive. The motor should remain stopped.

5. Set the speed adjust potentiometer or input signal for maximum speed.

6. Adjust the CURRENT LIMIT trimpot slowly CW until the armature current is 120%

of motor rated current.

7. Set the speed adjust potentiometer or input signal for zero speed.

8. Remove power from the drive.

9. Remove the stall from the motor.

37

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 at optimum motor regulation for the high-

est motor horsepower.

To calibrate IR COMP, refer to Figure 13 (page 33), or use the following procedure:

1. Turn the IR COMP trimpot full CCW.

2. Set the speed adjust potentiometer or input signal 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.

Approximate calibration:

If the motor does not maintain set speed as the load changes,

gradually rotate the IR COMP trimpot CW. 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 speed.

38

Calibration

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

IR
COMP

IR
COMP

IR
COMP

IR
COMP

IR
COMP

IR
COMP

MM311U

1/8 HP
90 VDC
1750 RPM

1.3 ADC

1/10 HP
90 VDC
1750 RPM
5 ADC

1/15 HP
90 VDC
1750 RPM

0.75 ADC

MM301U and MM301A

1 HP
90 VDC
1750 RPM
10 ADC

1/2 HP
90 VDC
1750 RPM
5 ADC

1/4 HP
90 VDC
1750 RPM

1.4 ADC

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

CURRENT
LIMIT

IR
COMP

IR
COMP

IR
COMP

IR
COMP

IR
COMP

1/4 HP
180 VDC
1750 RPM

1.4 ADC

1/8 HP
180 VDC
1750 RPM

0.8 ADC

1 HP
180 VDC
1750 RPM
5 ADC

1/2 HP
180 VDC
1750 RPM

2.5 ADC

1/4 HP
90 VDC
1750 RPM

1.2 ADC

Figure 14. Typical CURRENT LIMIT, and IR COMP Settings for MM300 Series

(actual settings may vary with each application)

39

Calibration

ACCELERATION (ACCEL)

The ACCEL setting determines the time the motor takes to ramp to a higher speed,

within the limits of available torque. The ACCEL setting is factory set for its fastest

acceleration time (full CCW).

To calibrate ACCEL:

1. Set the speed adjust potentiometer or input signal for minimum speed. The motor

should run at minimum speed.

2. Set the speed adjust potentiometer or input signal to maximum speed, and meas-

ure the time it takes the motor to go from minimum to maximum speed.

3. If the time measured in step 2 is not the desired acceleration time, turn the ACCEL

trimpot CW for a slower acceleration time, or CCW for a faster acceleration time.

Repeat steps 1 through 3 until the acceleration time is correct.

DECELERATION (DECEL)

The DECEL setting determines the time the motor takes to ramp to lower speed, with-

in the limits of available torque. The DECEL setting is factory set for its fastest decel-

eration time (full CCW).

40

Calibration

To calibrate DECEL:

1. Set the speed adjust potentiometer or input signal for maximum speed. The motor

should run at maximum speed.

2. Set the speed adjust potentiometer or input signal for minimum speed and measure

the time it takes the motor to go from maximum to minimum speed.

3. If the time measured in step 2 is not the desired deceleration time, turn the DECEL

trimpot CW for a slower deceleration time, or CCW for a faster deceleration time.

Repeat steps 1 through 3 until the deceleration time is correct.

TACH VOLTS

Calibrate the TACH VOLTS setting only when a tachometer is used. The TACH

VOLTS setting, like the IR COMP setting, determines the degree to which the motor

speed is held constant as the motor load changes.

To calibrate the TACH VOLTS trimpot:

1. Connect the tachometer to T1 and T2. The polarity is (+) for T1 and (–) for T2 when

the motor is running in forward direction.

2. Set switch SW505 to ARM for armature feedback.

3. Set the speed adjust potentiometer or input signal to maximum speed.

4. Measure the armature voltage across A1 and A2 using a voltmeter.

41

Calibration

5. Set the speed adjust potentiometer or input signal to minimum speed.

6. Remove power from the drive.

7. Set SW505 to TACH for tachometer feedback.

8. Connect power to the drive.

9. Set the IR COMP trimpot full CCW.

10. Set the TACH VOLTS trimpot full CW.

11. Set the speed adjust potentiometer or input signal to

maximum speed.

12. Adjust the TACH VOLTS trimpot until the armature voltage is the same value as

the voltage measured in step 3.

Check that the TACH VOLTS trimpot is properly calibrated. The motor should run at

the same set speed when SW503 is set to either armature or tachometer feedback.

42

Application Notes

Multiple fixed speeds

Replace the speed adjust potentiometer with series resistors with a total series resist-

ance of 10K ohms (Figure 15). Add a single pole, multi-position switch with the correct

number of positions for the desired number of fixed speeds.

Figure 15. Multiple Fixed Speeds

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 16 shows a connection for fixed high and low speed adjust potentiometers.

Figure 16. Adjustable Fixed Speeds Using Potentiometers in Series

43

44

Application Notes

Independent adjustable speeds

Replace the speed adjust potentiometer with a single pole, multi-position switch, and

two or more potentiometers in parallel, with a total parallel resistance of 10K ohms.

Figure 17 shows the connection of two independent speed adjust potentiometers that

can be mounted at two separate operating stations.

S3

S2

SPEED 2

SPEED 1

S1

Figure 17. Independent Adjustable Speeds

CW

20K
OHM

CW

20K
OHM

Application Notes

Reversing

A dynamic brake may be used when reversing the motor direction (Figure 18). Use a

two 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 the Dynamic braking section, page

28, for sizing the dynamic brake resistor.

45

Figure 18. Reversing Circuit Connection

46

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 pushbut-

ton for the JOG pushbutton.

Connect the RUN/JOG switch and the JOG pushbutton as shown in Figure 19. When

the RUN/JOG switch is set to JOG, the motor decelerates to minimum speed (mini-

mum speed is determined by the MIN SPD trimpot setting). Press the JOG pushbut-

ton to jog the motor. Return the RUN/JOG switch to RUN for normal operation.

Figure 19. RUN/JOG Switch Connection to Speed Adjust Potentiometer

Application Notes

Reversing with a DIGI-LOK Controller (DLC600)

A DIGI-LOK controller, model DLC600 can be used in a reversing application. The

DIGI-LOK must be inhibited while braking. Without the inhibit feature, the DIGI-LOK

will continue to regulate. This will cause overshoot when the DIGI-LOK is switched

back to the drive. Figure 20 shows the connection of the reversing circuit to a

MM300 series drive and to a DLC600. Note: Only one DLC option (Optical Encoder

or Magnetic Pickup) may be used at a time.

47

A2

Common

Signal

+5 VDC

S3

S2

S1

S1

S2

DLC600

Inhibit
Leads

+

C IN

Magnetic

Pickup

MINARIK
DRIVE

A1

Dynamic

rake

B

tor

Resis

BRAK

E

Optical

coder

En

REV

Mo

tor

FWD

Figure 20. Reversing with a DLC600

48

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.

Check the following steps before proceeding:

1. The AC line voltage must be balanced, and match the voltage on the drive name­plate.

2. On dual voltage drives, check that the slide switches are set to the correct posi­tion.

3. The motor must be rated for the drive’s rated armature (all motors) and field out­puts (shunt wound motors only).

4. Do not make any connections to F1 and F2 when a permanent magnet motor is
used.

5. Terminal block connections should be consistent with the connections shown in
this manual.

6. Check that line fuses FU501 and F502 are properly sized and not blown.

For additional assistance, contact your local Minarik distributor, or the factory direct:

PHONE: (800) MINARIK or [phone]

FAX: [phone]

49

Troubleshooting

Problem Possible

Causes

Suggested
Solutions

Line fuse blows

Motor runs too fast at
maximum speed setting

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 high­current spikes (i.e.
reversing).

4. Field circuit is open.

1. MIN SPD and MAX SPD
settings are too high.

2. Motor field connections
are loose (shunt wound
motors only).

3. Motor is demagnetized.

4. Tachometer leads are
reversed.

1. Check that line fuses are
correct for motor size (page

9).

2. Check motor cable and
armature for shorts.

3. Add a blower to cool the
drive components, or
decrease the duty cycle of
the system.

4. Send drive to Minarik repair
department.

1. Recalibrate MIN SPD and
MAX SPD.

2. Check motor field connec­tions.

3. Check for proper braking
technique and method by
which power is cycled.

4. Check tachometer connec­tions.

50

Troubleshooting

Problem

Possible
Causes

Suggested
Solutions

1. Speed adjust pot, voltage
input signal, or current input
signal set to zero speed.

2. Speed adjust pot, voltage
input signal, or current input
signal not connected to
drive input properly; connec­tions are open.

3. S2 is shorted to S1.

4. Drive is in current limit.

5. Drive is not receiving AC
line voltage.

6. Motor is not connected.

7. B1 not connected
to B3 (if START/STOP push­buttons

are not used).

Line fuse does not
blow, but the motor
does not run

1. Increase the speed adjust
pot, voltage, or current set­ting.

2. Check connections
to input. Verify that connec­tions are not open.

3. Remove short.

4. Verify that motor is not
jammed. Increase CUR­RENT LIMIT setting if it is
set too low.

5. Apply AC line voltage to L1
and L2.

6. Connect motor to A1 and
A2.

7. Connect B1 to B3.

51

Troublshooting

Problem Possible

Causes

Suggested
Solutions

Line fuse blows

Motor runs too fast
at maximum speed
setting

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
(i.e. reversing).

4. Field circuit is open.

1. MIN SPD and MAX SPD set­tings are too high.

2. Motor field connections are
loose (shunt wound motors
only).

3. Motor is demagnetized.

4. Tachometer leads are
reversed.

1. Check that line fuses are
correct for motor size (page

9).

2. Check motor cable and
armature for shorts.

3. Add a blower to cool the
drive components, or
decrease the duty cycle of
the system.

4. Send drive to Minarik repair
department.

1. Recalibrate MIN SPD and
MAX SPD.

2. Check motor field connec­tions.

3. Check for proper braking
technique and method by
which power is cycled.

4. Check tachometer connec­tions.

52

Troubleshooting

Block Diagram

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Figure 21. MM300 Series Block Diagram

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53

Troubleshooting

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

MM301U D501,502, 503 20 A, 800 V Diode, D8020L 071-0039

IC503 IS0122P IC 060-0106

R501 .01 Ohm, 5 W Resistor 032-0129

SCR501-502 800 V, 20 SCR, S8020L 072-0043

T501 DST-436 Transformer 230-0072

FU501, 502 15 A Fuse, Normal Blow 050-0018

Heat Sink 223-0252

10K Ohm Potentiometer Kit 202-0003

63mA Pico fuse 050-0081

MM311U Same as MM301U except:

R501

FU501, 502 5 A , Fast Acting Fuse 050-0022

MM301A Same as MM301U except:

Knob 140-0013

240V Pilot Light 040-0043

DPST Power / Signal-Manual Switch 080-0037

Power / Signal-Manual Boot 155-0078

Potentiometer 10 kOhm, 5 W, 5% Tolerance 120-0009

0.1 Ohm, 5 W Resistor

032-0100

54

Unconditional Warranty

A. W A. Warranty - Minarik Drives 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, Minarik Drives will repair or replace, at its sole discretion, such

products that are returned to Minarik Drives, 14300 De La Tour Drive, South Beloit, IL 61080 USA.

This warrant y applies only t o standard cat alog products, and does not apply to specials. Any

returns for special controls will be e valuated on a ca se-by-case basis. Minarik Drives i s not

responsible for removal, installation, or any ot her incidental expenses incurred in shipping the

products to and from the repair point.

B. Disclaimer - The
all other warranties of merchantability for use , express or implied. Minarik Driv es 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 mis use, negligence, or accident, or misapplied or modified by unaut horized persons or
improperly installed.

C. Limitations of Liability - In t he event of any claim or breach of any of Minarik Drives’s
obligations, whet her express or implied, and particularly o f any other claim or breach o f
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 Minarik Drives by lawful authority,
Minarik Drives shall under no circumstances be liable for any consequant ial damages, losses,
or expense arising in connection with the use of,
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, Minarik Drives’s liability for
damages arising out o f its manufacture or sale of equipment, or use thereof, whether such
liability is based on warrant y, contract, negligence, stict liability in tort, or otherwise, shall not
in any event exceed the full purchase price of such equipment.

Any action against Minarik Drives based upon any liability or obligat ion arising hereunder or
under any lap applicable to the sale of equipment or the use thereof, must be commenced
within one ear after the cause of such action arises.

provisions of Paragraph A are Minarik Drives’s sole oblication and e xlude

or inability to use, Minarik Drive s product for

55

Notes

M I NAR I K D R I V E S

w w w . m i n a r i k d r i ves . c o m

14300 De La Tour Drive, South Beloit, IL 61080

Phone: [phone]

Fax: [phone]

Document number 250–0175, Revision 10

Printed in the U.S.A - July 2013