AC Synchronous Motor

Supply TypeManufacturer, Exporter, Supplier, Retailer
Preferred Buyer Location All over the world

'Vishal SYN' Reversible A.C. Syn. motors are Ungeared low speed 60 RPM @ 50Hz. & offering large torque range from 2kg-cm to 60 kg-cm in three NEMA frame sizes viz. O.D. 2.3. " (58 mm), 3.4 " (86....

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Vishal Electromag Industries

Mahad, Mumbai, Maharashtra

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Member Since 23 Years
Nature of Business Retailer
Year of Establishment 1981

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'Vishal SYN' Reversible A.C. Syn. motors are Ungeared low speed 60 RPM @ 50Hz. & offering large torque range from 2kg-cm to 60 kg-cm in three NEMA frame sizes viz. O.D. 2.3. " (58 mm), 3.4 " (86 mm) & 4.2" (108 mm) and in 10 different models. The motor consist of 3 lead two phase wound stator & permanent magnet rotor.

FEATURES

Instant start, stop & reversible. Low speed 60 RPM @ 50 Hz. Torque from 2 kg.cm to 60 kg.cm (10 models). Insulation Class-B. starting, running & stalling currents are same. Magnetically rotor can be locked by D.C. applying. Power coated cast aluminum body with steel shaft.

CHARACTERISTICS

A.C. Operation : motor can be directly connected to 240 V;50Hz, supply along with factory supplied R-C network in series with one of the stator winding. Change of this R-C network from one winding to other results reversal of motor direction. Single pole three position switch can be used for Forward, Reverse & Off control as shown in the following diagram. Metal varistor oxide may be used to minimize the switch contact arcing.

Starting : Motor start within 1 1/2 Cycles of its applied frequency & will reach 60 RPM within 5 to 30 mS at 50 Hz. Since motor has no significant current rise on starting, this motor is ideal to an application which requires six or more starts per minute.

Stalling : Motor will not be overheated if stalled because starting, full load and no load currents are same. However prolonged operation against a solid stop will eventually produce bearing failure due to the resultant shaft vibrations.

Inertia Limitations : Since the motors are having extremely rapid starting, there is a limit to the inertia load at which the motor will start from rest. Addition of resilient coupling with app. 5 degree of rotational freedom or gearing with backlash between motor & load can increase the permissible inertia load handing capability.

Phase Shift Network : The values of R-C network have considerable effect on motor performance. They have been chosen by 'Vishal' in such a manner that no reverse torque is produced when voltage is applied. R-C values should not be varied more than 5% so as to enhance smoother starting, give quieter operation, maximize torque & improve efficiency.
Other values may be recommended by the factory for the continuous duty specific OEM application

Stopping & Holding (Braking) : Due to magnetic rotor, these motors decelerate faster than conventional motors & stop within 5 degree after turnoff with no external inertia. Application of D.C. supply to one or both motor windings after removal of A.C. supply results deceleration time 1/10th to 1/20th those available with conventional motor & the motor shaft is electrically locked after the stop. A typical circuit for applying, stopping & or holding current is shown in the following diagram.

7)	Back Driving : These motors act as generators when back driven. Rotating in access of 1400 RPM is not recommended because high voltages can be generated. At 1400 RPM or below suitable precautions for protection of personnel/phase shift capacitor & any other connected circuitry may be necessary when back driving.

8)	60 Hz Operation : These motors may be operated on 60 Hz, but may require a different R-C network, the factory must be consulted. Torque rating should be similar to those shown for 50Hz & speed is 72 RPM @ 60 Hz.

Motor Models	Max. Torque Kg-cm	Nom.Rotor Inertiakg-cm²	Max. Moment Of Inertia Kg - cm²Rigidly attached load	InputCurrent mA	Detent Torque Kg-cm	Rotor Locking D.C. Volts	O.D. mm	Length mm	Weight (app.) Kgs
SYN-231SP	2	0.12	0.65	100	0.100	60	58	60	0.600
SYN-341	3.5	0.61	1.45	125	0.400	60	86	68	1.400
SYN-341SP	7	0.65	2.95	160	0.450	84	86	68	1.500
SYN-342	14	1.28	5.80	250	0.700	42	86	120	3.100
SYN-343	21	1.89	8.75	600	0.800	24	86	150	4.000
SYN-421	10	3.20	4.40	150	1.000	40	108	80	3.100
SYN-421SP	20	3.80	8.65	250	1.600	50	108	80	3.400
SYN-422SP	28	4.00	12.30	280	1.800	55	108	80	3.700
SYN-422	40	7.00	17.50	650	3.100	24	108	155	6.300
SYN-423	60	10.80	25.80	1260	4.800	15	108	215	10.500

A.C. SYN. Motor Model	Torque Kg-cm	Dimensions (mm)										Weight Kg.
A.C. SYN. Motor Model	Torque Kg-cm	A	B	C	D	E	F	G	ØH	ØJ	ØK	Weight Kg.
SYN-231SP	2	58	47.2	60	6	1.2	22	21	6.35	38	6	0.600
SYN-341	3.5	86	70	68	7	1.2	27	21	10	73	7	1.400
SYN-341SP	7	86	70	68	7	1.2	27	21	10	73	7	1.500
SYN-342	14	86	70	120	7	1.2	27	21	10	73	7	3.100
SYN-343	21	86	70	150	7	1.2	27	21	10	73	7	4.000
SYN-421	10	108	85	80	7	1.5	27	22	10	55	8	3.000
SYN-421SP	20	108	85	80	7	1.5	27	22	10	55	8	3.400
SYN-422SP	28	108	135	85	7	1.5	27	22	10	55	8	4.200
SYN-422	40	108	85	155	7	1.5	50	22	15	55	8	6.300
SYN-423	60	108	85	215	7	1.5	50	22	15	55	8	10.100