Lincoln Electric MOTOVAR MV 20 Mounting instructions

ELECTRONIC VARIABLE SPEED UNIT
MOTOVAR MV 20
SAFETY INSTRUCTIONS FOR USE AND MAINTENANCE
DEVICE N°W000139784
N°W000139834
N°W000140676
N°W000139910
N°W000237668
N°9109 7542
N°9109 7543
EDITION: EN Instructions for use REF: 8695-5832
REVISION: M
DATE: 06-2019 Original instructions

Thank for the trust you have expressed by purchasing this equipment, which
will give you full satisfaction if you follow its instructions for use and
maintenance.
Its design, component specifications and workmanship comply with
applicable European directives.
Please refer to the enclosed CE declaration to identify the directives
applicable to it.
The manufacturer will not be held responsible where items not recommended
by themselves are associated with this product.
For your safety,there follows a non-restrictive list of recommendations or
requirements, many of which appear in the employment code.
Finally we would ask you kindly to inform your supplier of any error which
you may find in this instruction manual.

8695 5832
MOTOVAR MV20 I
CONTENTS
A - IDENTIFICATION.........................................................................................................................1
B - SAFETY INSTRUCTIONS............................................................................................................3
C - DESCRIPTION .............................................................................................................................4
FLOW CHART OF THE VARIABLE SPEED UNIT..................................................................4
PRESENTATION......................................................................................................................5
SPECIFICATIONS OF MOTOVAR MV 20 ...............................................................................6
D - ASSEMBLY - INSTALLATION ....................................................................................................7
1 - CONNECTION....................................................................................................................7
2 - START UP...........................................................................................................................7
3 - ADJUSTMENTS AND CONFIGURATIONSOF THE VARIABLE SPEED UNIT....................8
E - MAINTENANCE............................................................................................................................11
1 - TROUBLESHOOTING........................................................................................................11
PERSONAL NOTES ..........................................................................................................................12

8695 5832
II MOTOVAR MV20
INFORMATIONS
DISPLAYS AND PRESSURE GAUGES
The measuring devices or displays for voltage, current, speed, pressure, etc., whether analog or digital, should
be considered as indicators
REVISIONS
REVISION J 07/08
DESIGNATION
PAGE
Creation in several languages
REVISION K 10/08
DESIGNATION
PAGE
Complete update + spareparts newoffer
-
REVISION L 05/18
DESIGNATION
PAGE
To change logos
REVISION M 06/19
DESIGNATION
PAGE
Update
D-7 ; D-8 ; D-9

8695 5832 / L
MOTOVAR MV20 A-1
A - IDENTIFICATION
Please enter the number of your equipment in the following box.
Quote this information in all correspondence.
N° .

A - IDENTIFICATION 8695 5832 / L
A-2 MOTOVAR MV20

8695 5832 / L
MOTOVAR MV20 B-3
B - SAFETY INSTRUCTIONS
For general safety instructions, please refer to the specific manual supplied with
the equipment.

8695 5832 / L
C-4 MOTOVAR MV20
C - DESCRIPTION
FLOW CHART OF THE VARIABLE SPEED UNIT
Tacho
Setpoint
Pulse width modulator
Power control
Power
Motor
Chort circuit control
Filtering +
levelling
V and I processing
Control of I limiting
V and I
measurement
Regulation
Rotation direction
control
Locking control
Measurement of
max I
Direction +
Direction -

8695 5832 / LC - DESCRIPTION
MOTOVAR MV20 C-5
PRESENTATION
The MOTOVAR MV 20 is a four-quadrant switching variable speed unit
with dimensions 220x100x50 ; it can deliver 500 W of power.
The variable speed unit is autonomous and is supplied by 42V 50/60 Hz
10A. An external fuse protection is to be provided for on the 42V power
supply.
The MOTOVAR MV 20 has two unlocking inputs :
- a (+) input allows at a given setpoint to turn in one direction
- the other input (-) allows to turn in the other direction.
If the setpoint varies from + 10V to - 10V, the motor will reverse its
direction of rotation at the 0V setpoint.
Two modes of regulation are available : regulation with or without tacho
generator.
This variable speed unit is protected against motor short-circuits and has
a thermal circuit breaker at 80°C.

C - DESCRIPTION 8695 5832
C-6 MOTOVAR MV20
SPECIFICATIONS OF MOTOVAR MV 20
CHARACTERISTICS :
- Connection by draw-out terminal block
(wire 2,5 2max.)
- Power supply =
42V 10% 50/60 Hz 10A
- Setpoint (differential input) :
10V 22 K
- Regulation with or without tacho
generator.
- Unlocking direction +
(closing 5 and 6 J1).
- Unlocking direction -
(closing 5 and 7 J1).
If the 2 inputs are activated simultaneously,
the + direction has priority.
- 4 quadrants, switching power
- Switching frequency =
12Khz
- Memorized protection against short
circuits
(indication by red led).
- Thermal protection = 80°C on the radiator.
- Operating temperature =
0 to 40°C
- Adjustable intensity limiting
(factory adjustment = 10A).
- If a power transistor is disconnected or
shorts-out, the motor stops.