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Electronic Soft Starters in module housings
Soft starting and soft stopping of three-phase induction motors at powers up to 5.5 kW
Applications
- Material handling applications
- Conveyor belts
- Packing machines
- Pumps
- Refrigeration compressors and heat pumps
- Long and cross travel drives for cranes
- General soft-start applications for mechanical engineering and process plant
User benefits
Mechanical
- Low adjustable starting torque
- Reduced cost of transmission components
Conveyor belts
- Falling over, banging or slipping of products, parcels etc. is elimiated Electrical
- Reduced starting current (with K2, KK1, DMA only)
Features
- Switch-on torque and run-up voltage ramp separately adjustable
- Module housing for mounting on 35 mm DIN rails. Very compact version with the width of a standard contactor (45 mm or 90 mm with KK1) Terminals and adjustment potentiometer well protected against accidental contact
- Easily retrofitted
Principle of operation
LEKTROMIK K2 is a module for the soft start of single-phase capacitor motors also with separate start capacitor. Good soft start performance with a useful reduction of starting current can be achieved.
LEKTROMIK K1 is a snatch-free soft start module with phase-control in one of the phases. The other two motor phases are connected directly to the supply terminals. The voltage in the controlled phase is increased to full voltage during ramp up. The starting torque is limited and the mechanical stress on the transmission components drastically reduced.
LEKTROMIK KK1 and KIMODUL DMA are soft start modules for three-phase induction motors and make use of phase-control in two phases. One motor phase is connected directly to the supply terminals. The voltage in the two controlled phases increases gradually to full voltage during ramp up. The starting torque can be controlled very finely and a good soft-start characteristic can be achieved.
LEKTROMIK KK1 is especially suited for starting zsmall fractional h.p. motors.
Available Types
| Available Types |
LEKTROMIK |
KIMODUL |
| K2 |
K1 |
KK1 |
DMA |
Motors
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Single-phase capacitor |
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| Three-phase induction motors |
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| Pole-change motors |
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° |
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Modes of operation
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Snatch-free start |
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| Soft start |
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| Soft stop |
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| Regen. Braking n>ns |
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Electronic braking with:
LEKTROMIK |
B2 |
B1 |
B1 |
B1 |
| Features
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Phase control |
1 Ph. |
1 Ph. |
2 Ph. |
2 Ph. |
| Integrated bridging relay |
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| Functions |
Electronic contactor operation
(DC 24 V/contact) |
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| Power range at rated voltage
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0.25...2.2 kW/
L/N 230 V |
0.25...5.5 kW/
3AC 400 V |
0.18...1.1 kW/
3AC 400 V |
0.55...5.5 kW/
3AC 400 V |
Typical installations
- Packaging machinery – to save stress and wear on transmission components
- Long and cross travel drives for cranes - load swing is reduced
- Bottling plant in breweries – to prevent damage to bottles
- Electronic switching of conveyor belts – no contactor wear
- Parcel sorting plant – prevents parcels from skidding, electronic switching with PLC
- Pumps – hydraulic surges are eliminated
- Compressors for heat pumps – reduction of starting current
- Refrigeration compressors – reduction of starting current
- Starting wood-working machines – reduction of starting current
- Vibration transporters – smooth starting
Available Types
LEKTROMIK K2
Electronic soft start modules for single-phase capacitor motors
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Motor power |
Supply voltage |
Equipment code |
Mounting width |
Special features |
| |
L/N AC |
LEKTROMIK |
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| 0.25 ... 2.2 kW |
230 V |
2K2-14 |
45 mm |
For motors with and without starting capacitors
Internal switching of starting capacitor
Useful reduction of starting current
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LEKTROMIK K1
Electronic Snatch-free soft start modules with phase-control
| Motor power |
Supply voltage |
Equipment code |
Mounting width |
Special features |
| |
3AC |
LEKTROMIK |
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| 0.25 ... 2.2 kW |
400 V |
2K1-14 |
45 mm |
Snatch-free starter (starting current is not reduced)
Compact low-cost starter |
| 1.1 ... 5.5 kW |
400 V |
5K1-14 |
45 mm |
| 0.55 ... 3.0 kW |
230 V |
3K1-14/230 |
45 mm |
LEKTROMIK KK1KIMODUL DMA
Electronic soft start modules for three-phase induction motors
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Motor power |
Supply voltage |
Equipment code |
Mounting width |
Special features |
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3AC |
LEKTROMIK |
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| 0.18 ... 1.1 kW |
400 V |
1KK1-14 |
90 mm |
- Good starting torque performace
- Reduction of starting current
- KIMODUL DMA:
- Soft stop possible
- Special version for pole-change motors available
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KIMODUL |
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| 0.55 ... 2.2 kW |
400 V |
2DMA-14 |
45 mm |
| 2.2 ... 5.5 kW |
400 V |
5DMA-14 |
45 mm |
| 1.1 ... 3.0 kW |
230 V |
3DMA-14/230 |
45 mm |
Special versions
| Motor power |
Equipment code |
Special features |
| For pole-change motors |
KIMODUL
2DMA-14-SO3 |
No switch-over delay (without soft stop) |
EMC
DIRECTIVE |
LOW-VOLTAGE
DIRECTIVE |
MACHINERY
DIRECTIVE |
EC Declaration of Conformity with CE marking based on:
- Product standard IEC 947-4-2
- RF interference EN 55011
- Immunity EN 61000-4-2/-3/-4/-5
Class B interference limit - suitable for unrestricted operation on public electricity supplies
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- EC Declaration of Conformity with CE marking:
- Standard used:
- IEC 947-4-2
- EN 50178
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- Manufacturer’s
declaration is available
- Designed for installation in accordance with EN 60204-1
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