Industrial Electrical Equipment & Power System

LIFTING MAGNET

CONTACT-LESS CONTROL PANEL

SINFONIA TECHNOLOGY, the top manufacturer of lifting magnets, offers efficient power supply and control units. The contact-less type control panel is equipped with many features.

Over-Excitation system
Since this is a system in which the lifting magnet is overexcited by fully arcing the thyristor on the positive exciting side for a fixed period of time when lifting scrap, work efficiency is improved with increased, lifting load and shortened current rise time.
Compact and light weight
Having no three phase power transformer, it is a compact lightweight type with about 80% of the conventional power supply units. (Compared to our STQL type)
Maintenance free
Inspection and maintenance are not required since electromagnetic contactors are not used for excitation and de-excitation so there are no worn parts. The equipment is also simple since the single phase thyristor for de-excitation does not catty out single phase control but is used for switching.
Releasing is extremely smooth
Since a system of detecting current flow in the lifting magnet and cutting off the current during de-excitation is used, smooth release is possible for various kinds of scrap.

No restriction on place of use
It can be used even in harsh environments since the control panel is a fully enclosed dustproof type with its electronic circuits completely protected.
With over-shoot
In addition to the over-excitation system, it uses an overshoot system which causes the current to rise rapidly and is a system in which a more powerful lifting capability is achieved by controlling the voltage in three stages: 350V, 290V, 200V DC

LMP Series

Connecting Diagram

Standard Specifications
Type LMP-72A-D LMP-92A-D LMP-142A-D LMP-192A-D
Roted voltage 220V DC
Input voltage AC200/220V   50/60Hz
Output capacity (When DC220V) kW 7 9 14 19
Over shoot voltage (DC) V -
Over excite voltage (DC) V 270/290※
Voltage when handling (DC) V 200
Outer dimensions mm 750×300×930
Gross weight kg 110
Type LMP-74A-D LMP-94A-D LMP-144A-D LMP-194A-D
Roted voltage 440V DC
Input voltage AC400/440V   50/60Hz
Output capacity (When DC220V) kW 7 9 14 19
Over shoot voltage (DC) V 350
Over excite voltage (DC) V 290
Voltage when handling (DC) V 200
Outer dimensions mm 750×300×930
Gross weight kg 110
Type LMP-254A-D LMP-324A-D LMP-454A-D LMP-634A-D
Roted voltage 440V DC
Input voltage AC400/440V   50/60Hz
Output capacity (When DC220V) kW 25 32 45 63
Over shoot voltage (DC) V 490
Over excite voltage (DC) V 290 or 370
Voltage when handling (DC) V 200 or 180
Outer dimensions mm 1000×450×1250 1000×450
×1450
Gross weight kg 170 200

※About overexcite voltage when grabbing material. AC200V 50 Hz area is DC270V. AC220V 60Hz area is DC290V.

LMPB Series

Fail safe device for power cut (Battery & Battery charging board)

When sudden power cut occurred, a battery is going to supply DC power for lifting magnet to prevent falling material. Operator will aware of power cut by flashing indicating lamp on instrument case and beeping of warning alarm. Battery charging board is the device to charge battery for back-up to prepare for sudden accident.

Providing the most suitable charging method
Various charging functions are installed to battery charger, and both charging current and voltage are carefully controlled by control equipment.
Easy recharging
After supplying DC power to lifting magnet while power out, automatically starts charging battery as soon as electricity is supplied.
Connecting Diagram

Gauges MPBS-2111