PRODUCT DESCRIPTION - ssdservice.pl

MINAC 25-50 Series
Single and Twin
Mobile Induction Heating Equipment
PRODUCT DESCRIPTION
Manufacturer:
EFD Induction a.s
P.O. Box 363, N-3701 Skien, Norway
Tel: +47 35506000 Fax: +47 35506010
© No part of this publication may be reproduced in any form without the
express written permission of EFD Induction a.s. EFD Induction a.s
reserves the right to change technical specifications without notice.

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
C O N T E N T S
1 INTRODUCTION .............................................................................................. 1
1.1 MINAC 25-50 Series .................................................................................... 1
1.2 MINAC 25 Twin ............................................................................................ 1
2 TECHNICAL SPECIFICATIONS ...................................................................... 2
2.1 System ......................................................................................................... 2
2.1.1 MINAC 25/40, MINAC 25 Twin and MINAC 50/80 ................................... 2
2.2 Cooling Water Quality .................................................................................. 4
3 TECHNICAL DESCRIPTION............................................................................ 5
3.1 System Description ...................................................................................... 5
3.1.1 Modules and Electronic Cards ................................................................. 6
3.2 Frequency Converter.................................................................................... 6
3.2.1 Output Current Limitations ....................................................................... 7
3.3 CAPacitor ..................................................................................................... 7
3.4 Hand Held Transformer................................................................................ 7
4 EFD GROUP ADDRESSES ............................................................................. 8
Attachments
Dwg C37854 MINAC 25S/Twin- MINAC 50, Layout
Dwg C36158 HHT 240B/SS2–2x– – –2C, Layout for pistol grip, assembly
Dwg C37990 HHT 400B/S1–4x– – –3C, Layout, Assembly drawing
Dwg C37880 MINAC 25S/Twin- MINAC 50, Block diagram
Dwg C37879 MINAC 25S/Twin- MINAC 50, Internal connections
Dwg C37836 CON 1014S Converter, Circuit diagram (Single)
Dwg C37829 CON 1014S Converter, Layout (Single)
Dwg C36644 CON 1014T Converter, Circuit diagram (Twin)
Dwg C37828 CON 1014T Converter, Layout (Twin)
Dwg C37965 MINAC 25/40, Cooling water diagram
Dwg C37881 MINAC 25Twin, Cooling water diagram
Dwg C38014 MINAC 50/80, Cooling water diagram
Dwg C32638 CCM 1006/1010 External control plugs, Circuit diagram
Dwg C35598 MINAC, Interface signals, Time chart
S-112474 Schedule of electrical equipment; MINAC 25/40
S-112475 Schedule of electrical equipment; MINAC 25 Twin
S-112476 Schedule of electrical equipment; MINAC 50/80
Declaration of Conformity
© For reproduction rights, see cover page. Page i

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
1 INTRODUCTION
1.1 MINAC 25-50 Series
The MINAC 25-50 series is a new generation of induction heaters consisting of the
MINAC 25 standard and Twin, and standard 50/80 systems. The compact design of
the equipment allows for easy portability and installation. The equipment offers rapid,
concentrated and controlled heating with full repeatability.
The MINAC has a wide range of induction heating applications including brazing and
soldering, shrink fitting, hardening, curing, straightening and pre-/post-heating. The
MINAC is suitable for heating many different electrically conductive materials. And
the MINAC has integrated electronic impedance matching for optimal output power
for various heating operations.
The MINAC has a menu-based control panel. The control and communication
system allows for the development of heat sequences and monitoring of power. The
MINAC also offers control and data backup via field bus for operation in automatic
lines and/or with robots. For external communication, the equipment can use the
field-bus protocols Profibus DP, Interbus, Ethernet or others according to customer
request.
1.2 MINAC 25 Twin
The MINAC 25 Twin has two individual power outputs. The double output allows for
independence of power levels, heating times and coil design.
Figure 1. MINAC 25-50 Single.
Figure 2. MINAC 25 Twin.
© For reproduction rights, see cover page. Page 1

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
2 TECHNICAL SPECIFICATIONS
2.1 Standard system
2.1.1 MINAC 25/40, MINAC 25 Twin and MINAC 50/80
Characteristic
Supply
Supply voltage range
Frequency
Nominal line current
Max. line current at 360 V
Nominal apparent power
Maximum apparent power
Power factor (cos Ν)
Recommended fuse *
Mains cable length
Output
Nominal output power
DC power, intermittent duty
Duty factor/Cycle time
Output power regulation range
Frequency range
Efficiency
HHT power cable length
Cooling
Water consumption, min.
Water inlet temperature
Water pressure min./max.
Ambient operating temp.
Enclosure
Outer dimensions, (WxDxH)
Weight
Enclosure protection
Color
Specification
MINAC 25/40(-400) MINAC 25 Twin MINAC 50/80
400 – 480 V ±10%
50/60 Hz
45A (RMS)
68A (RMS)
31 kVA
45 kVA
0.95
63 A
5 m
25 kW
40 kW
0.5/10 min
2–100 %
10–40 kHz
0.93
5 m
12 l/min (20 l/min)
35 °C
4/6 bar
+5 °C – +50 °C
345x708x453 mm
40 kg (approx.)
IP 54
RAL 7032 Gray
400 – 480 V ±10%
50/60 Hz
90A (RMS)
135A (RMS)
62 kVA
90 kVA
0.95
100 A
5 m
2x25 kW
2x40 kW
0.5/10 min
2–100 %
10–40 kHz
0.93
5 m
24 l/min
35 °C
4.5**/6 bar
+5 °C – +50 °C
345x708x453 mm
40 kg (approx.)
IP 54
RAL 7032 Gray
400 – 480 V ±10%
50/60 Hz
90A (RMS)
135A (RMS)
62 kVA
90 kVA
0.95
100 A
5 m
50 kW
80 kW
0.5/10 min
2–100 %
10–40 kHz
0.93
5 m
22 l/min
35 °C
4/6 bar
+5 °C – +50 °C
345x708x453 mm
40 kg (approx.)
IP 54
RAL 7032 Gray
* Fuse: gL Characteristics.
** 5.5 bar with 10m HHTs connected.
© For reproduction rights, see cover page. Page 2

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
2.2 Extended power range system
If the units are to be connected to a 480V supply line only, extended power range
units are available.
2.2.1 MINAC 30/50, MINAC 30 Twin and MINAC 60/100
Characteristic
Supply
Supply voltage range
Frequency
Nominal line current
Max. line current at 456 V
Nominal apparent power
Maximum apparent power
Power factor (cos Ν)
* Recommended fuse
Mains cable length
Output
Nominal output power
DC power, intermittent duty
Duty factor/Cycle time
Output power regulation range
Frequency range
Efficiency
HHT power cable length
Cooling
Water consumption, min.
Water inlet temperature
Water pressure min./max.
Ambient operating temp.
Enclosure
Outer dimensions, (WxDxH)
Weight
Enclosure protection
Color
Specification
MINAC 30/50(-400) MINAC 30 Twin MINAC 60/100
480 V –5%/+10%
50/60 Hz
44A (RMS)
70A (RMS)
37 kVA
55 kVA
0.95
60 A
5 m
30 kW
50 kW
0.5/10 min
2–100 %
10–40 kHz
0.93
5 m
12 l/min (20 l/min)
35 °C
4/6 bar
+5 °C – +50 °C
345x708x453 mm
40 kg (approx.)
IP 54
RAL 7032 Gray
480 V –5%/+10%
50/60 Hz
88A (RMS)
140A (RMS)
74 kVA
110 kVA
0.95
125 A
5 m
2x30 kW
2x50 kW
0.5/10 min
2–100 %
10–40 kHz
0.93
5 m
24 l/min
35 °C
4,5/6 bar
+5 °C – +50 °C
345x708x453 mm
40 kg (approx.)
IP 54
RAL 7032 Gray
480 V –5%/+10%
50/60 Hz
88A (RMS)
140A (RMS)
74 kVA
110 kVA
0.95
125 A
5 m
60 kW
100 kW
0.5/10 min
2–100 %
10–40 kHz
0.93
5 m
22 l/min
35 °C
4/6 bar
+5 °C – +50 °C
345x708x453 mm
40 kg (approx.)
IP 54
RAL 7032 Gray
* Fuse: Class J Characteristics
© For reproduction rights, see cover page. Page 3

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
2.2 Cooling Water Quality
The quality of the cooling water for all of the MINAC systems should have the
following purity:
Characteristic
Specification
PH between 7.0 and 9.0
chloride content [CI]
nitrate content [NO 3 ]
sulfate content [SO 4 ]
total solids content
total hardness, as
calcium carbonate [CaCO 3 ]
≤ 20 ppm
≤ 10 ppm
≤ 100 ppm
≤ 250 ppm
≤ 250 ppm
Clean tap water can be used when there is no risk of freezing.
Normally, an electrical resistivity measurement of the water will provide a satisfactory
guide to the total amount of dissolved solids. Water having a resistivity ≥ 25 Om or a
conductivity ≤ 0.04 S/m (400µS/cm) measured at 25 °C is usually satisfactory as a
coolant.
If the cooling water has a content of calcium carbonates higher than 250 ppm, the
cooling water system must be decalcified regularly.
© For reproduction rights, see cover page. Page 4

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
3 TECHNICAL DESCRIPTION
3.1 System Description
The MINAC 25-50 induction heating systems consists of three major units:
• Frequency converters FC 25, FC 25 Twin or FC 50
• Output capacitor CAP1211i
• Hand held transformer HHT 240S2-2x16T-2C or HHT 400-4x8T-3C
Other types of CAP and HHT are available on request.
The resonance circuit, i.e., the coil inductance and the resonance capacitor bank,
gives the output current frequency. The control system adjusts the inverter switching
frequency to match the resonance frequency. Thus, maximum performance from the
equipment is always achieved.
The MINAC inverters have the following nominal power–output current and nominal
power–output impedance ratios:
Nominal power reached at:
Equipment
Nominal output
current
Ratio to nominal
output current
Ratio to range of
output impedance
FC 25/40 36% 2.8:1 7.8:1
FC 25 Twin 36% 2.8:1 7.8:1
FC 50/80 36% 2.8:1 7.8:1
The flexibility in accepting variable load impedance without reduction of output power
is called automatic matching. Variations in output impedance are due to change of
coils, different workpieces and increases in temperature, among other factors.
Control and operation of the equipment are primarily from the unit’s operating panel
that serves as the man-machine interface (MMI). The local power on/off circuit can
also be operated from the button on the HHT handle or the foot controller. Different
types of external control units can be used to operate the frequency converter by
connection via the signal plug socket on the back of the converter.
© For reproduction rights, see cover page. Page 5

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
3.1.1 Modules and Electronic Cards
The induction heating system consists of the following modules and electronic cards:
Abbrev. Module/component Subcomponent/electronic card
CHS Chassis module Contains all other modules.
CON Converter module Contains the rectifier, inverter and the el. card FVCM.
OPN Operating panel Functions as the Man-Machine-Interface (MMI).
ELR Electronics rack Contains the electronic cards MECC (Motherboard),
MBAC, CIES, SMPS, POWS, FIPX and MCCC.
CAP Capacitor module Contains the output resonance capacitor bank.
HHT
Hand held transformer
CAB Cable module Contains all cables interconnecting other modules.
3.2 Frequency Converter
The single and twin frequency converters that MINAC 25/40, MINAC 25 Twin and
MINAC 50/80 are based on are designed for use in a wide range of induction heating
applications. The MINAC is small and lightweight, but has high power and variable
frequency ranges. It is adaptable to a variety of processes, including mobile brazing,
hardening and general heat treatment. It has a modular design to ensure fast and
simple on-site servicing. The MINAC is indirectly water-cooled and has a diode
rectifier and full-bridge IGBT transistor inverter.
The MINAC is delivered with the following 5m-long main power cables:
• MINAC 25/40 – 16 mm 2
• MINAC Twin – 25 mm 2
• MINAC 50/80 – 25 mm 2
The cables are equipped with a connection plug that also functions as a main power
disconnector. The main power cable is connected to the high-speed fuses and EMI
filter, and then to the main switch that also functions as an emergency stop switch
(red/ yellow), and further to the rectifier diodes. The electronics power supply
branches off after the main switch and feeds through a 3 x 500/220 V transformer to
the SMPS card. The SMPS card and POWS card supply the cooling fans, solenoid
valve and electronics with regulated voltages. This system allows the unit to operate
on a wide range of input voltages.
The main voltage is rectified by a 6-pulse diode rectifier and fed to the inverter
section through an LC filter. The LC filter blocks return of the high frequency inverter
currents to the supply. In addition, a capacitor bank is connected across the inverter
© For reproduction rights, see cover page. Page 6

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
module terminals in the MINAC single and each set of inverter module terminals in
the MINAC twin. The inverter generates the 10 – 40kHz AC output current.
3.2.1 Output Current Limitations
The output current of the IGBT converters is adjustable between minimum and
maximum levels. The minimum level is determined by the design of the converter
and depends on the actual load. The maximum level depends on the output
frequency. At low frequencies, output current is limited by the compensating
capacitor's maximum voltage and the transformer's saturation voltage. At high
frequencies the limitation of the output current is due to frequency dependant losses
(switching losses, etc.).
As long as a POWER ON signal is given, the output power will never be zero,
although the reference set point may be set at zero. This means that a small output
current runs through the induction coil, and is because the frequency converter's
regulation system needs some current feedback to function.
3.3 CAPacitor
The Capacitor module (CAP) is a series compensation unit that produces the
necessary reactive power needed in the load through a resonance capacitor bank. It
is located behind the right side cover (as seen from front). The resonance capacitor
bank is water-cooled, as are the terminals for the output connections (the HHT
connections).
3.4 Hand Held Transformer
The Hand Held Transformer (HHT) is connected to the CAP module through watercooled
flexible cables with an optional length of 5 or 10 m. In some deliveries, the
HHT can be equipped with holding brackets, or fixed to a machine or a specially
made fixture. The holding brackets can be equipped with an on/off button.
The ratio of the transformer is determined by the application the induction heating
system is used for. The HHT can be used to heat magnetic and non-magnetic
materials. This HHT is used for heat treatment, forging and brazing. Another type of
HHT might be considered for hardening. The coil output voltage depends on the
output power, and the length and design of the coil. The correct selection regarding
type of HHT for every specific application can only be made once all information
regarding the intended application is available. If a very large induction coil or a
multi-turn coil is needed for the application, an HHT with a different transformer must
be used. Each HHT has a serial number and certificate.
© For reproduction rights, see cover page. Page 7

MINAC 25-50 Series
Revision C
PRODUCT DESCRIPTION 18 February 2005
64200.doc
4 EFD GROUP ADDRESSES
EFD-ASA, Norway-Germany
Manufacturing Companies
Sales and Service Companies
EFD Induction a.s
EFD Induction Ges.m.b.H.
Bøleveien 10 Vogtgasse 28
Postboks 363 Sentrum
A-1140 Wien, Austria
N-3701 Skien, Norway Tel. +43-1-914 23 16
Tel. +47-35 50 60 00 Fax. +43-1-914 33 04
Fax. +47-35 50 60 10
EFD Induction s.l.
EFD Induction GmbH Los Palangreros No. 5
Lehener Strasse 91
(Trasera) Entreplanta
Postfach 426
E-48920 Portugalete (Vizkaya), Spain
D-79004 Freiburg, Germany Tel. +34-944-72 09 36
Tel. +49-761-8851 0 Fax. +34-944-72 09 88
Fax. +49-761-8851 139
EFD Induction s.r.l.
Lohnhärterei, Fritz Düsseldorf GmbH Via Sirtori, 15
Bebelstrasse 9
I-20052 Monza, MI, Italy
D-79108 Freiburg, Germany Tel. +39-039-32 3320
Tel. +49-761-1506-0 Fax. +39-039-32 2697
Fax. +49-761-1506-111
EFD Induction AB
EFD Induction S.A. Kokillgatan 3
20, avenue de Grenoble Box 200 47
B.P. 30
S-720 20 Västerås, Sweden
38171 Seyssinet-Pariset Tel. +46-21-30 00 10
Cedex, France Fax. +46-21-35 36 56
Tel. +33-4-7649 3250
Fax. +33-4-7696 2090 EFD Induction, Inc.
31511 Dequindre Rd.
Sodalgo S.A.
Madison Heights, MI 48071, USA
Z.I. du Fond des Prés Tel. +1-248-658 0700
91460 Marcoussis, France Fax. +1-248-658 0701
Tel. +33-1-6901 4664
Fax. +33-1-6901 6337 Cedipac Co., Ltd.
Room 1209 Union Plaza
EFD Induction Ltd.
No. 20 Chao Wai Da Jie
Plot No. 16 C & D, KIADB Industrial Area, Attibele
Chaoyang District
Bangalore 562 107, India
Beijing 100 020, China
Tel. +91-80-782-0404 Tel. +86-10-6588-8691
Fax. +91-80-782-0405 Fax. +86-10-6588-8695
EFD Induction Ltd.
Units 1&2, Wednesfield Way Industrial Estate
Well Lane, Wednesfield
Wolverhampton, WV11 1XP, UK
Tel. +44-1902-308 800
Fax. +44-1902-739 222
EFD Induction (Shanghai) Co., Ltd.
Bldg. C, No. 679 Shen Fu Road
Xin Zhuang Industrial Park
Shanghai 201 108, China
Tel. +86-21-5442-0227
Fax. +86-21-5442-0242
© For reproduction rights, see cover page. Page 8