0010237937

Three‑phase asynchronous motor 1LP with fitted DC‑excited spring‑operated brake

The naturally cooled crane motors of type 1LP4 and 1LP6 form a compact drive unit when combined with the fitted spring‑operated brake and are ideal for application as traversing motors. The DC‑operated brake is designed as a holding brake, but is also capable of emergency shutdown braking operations at maximum motor speed. In the case of power failure, the brake is applied automatically by its spring force and brings the drive to a standstill.

Product range

The product range includes shaft heights 132 S to 280 M in the 5.5 to 132 kW power range for 4‑pole motors, or in the 3 to 90 kW power range for 6‑pole motors, for duty type S3‑25 % in each case. As the table below shows, more than one type of brake can be fitted to a motor; this flexibility allows the user to tailor the drive unit – comprising the motor and brake – to the exact requirements of the crane manufacturer.

The motors can also be ordered without a brake. The same article numbers apply, but the article number supplements for the brake are excluded.

1LP4 and 1LP6, type of construction IM B3

with POG 10 pulse encoder

with brake and with POG 10 pulse encoder

¹⁾ Dimensions L and L' on request for 1LP6 motors, shaft heights 180 M to 280 M.

1LP4 and 1LP6, type of construction IM B5

with POG 10 pulse encoder

	Brake mounting
	Brake	L'' with brake
		mm
	KFB 10	Max. 150
	KFB 16	Max. 175
	KFB 25	Max. 180
	KFB 30	Max. 180
	KFB 40	Max. 185
	KFB 63	Max. 200
	KFB 100	Max. 215
	KFB 160	Max. 230

with brake and POG 10 pulse encoder

	Brake mounting + POG 10
	Brake	L* with brake + POG 10
		mm
	KFB 10	Max. 315
	KFB 16	Max. 330
	KFB 25	Max. 345
	KFB 30	Max. 345
	KFB 40	Max. 355
	KFB 63	Max. 370
	KFB 100	Max. 385
	KFB 160	Max. 400

Protective element

Electrical design

Operating voltage

The crane brake motors are available for the following rated voltages:

• 400 V 3 AC, 50 Hz
• 460 V 3 AC, 50 Hz
• 500 V 3 AC, 50 Hz
• 690 V 3 AC, 50 Hz

The specifications change as follows for motors operating at a rated frequency of 60 Hz:

• Rated speed +20 %
• Rated power +15 %

The standard model of brake coil is supplied for connection to 207 V DC (see technical data for brakes).

Motor protection

The following protective equipment can be installed (see "Article number supplements and special versions"):

• 3 PTC thermistors for tripping
• 3 PTC thermistors for tripping and 3 PTC thermistors for alarm
• 1 KTY 84‑130 temperature sensor for evaluation in the converter
• 3 bimetallic switches (Klixon) for tripping

Standstill heating

The motors can be fitted with a standstill heater. The heat outputs are as follows:

For voltages, see "Article number supplements and special versions".

It is also possible to connect a voltage (which should equal approximately 4 to 10 % of the rated motor voltage) to stator terminals U1 and V1. 20 to 30 % of the rated motor current is normally sufficient to provide adequate heating.

Insulation

The motor windings are designed to comply with insulation class F.

Electric strength

See Catalog D 81.1.

Mechanical design

1LP4/1LP6 motors are naturally cooled units without fans. Depending on the shaft height, brakes with different torques can be built onto the motors. Housing and terminal box are made of gray cast iron. The brake itself does not have a separate terminal box; all the brake connections, whether coil, microswitch or heater, are taken to the motor terminal box.

Types of construction

The motors are available in types of construction IM B3, IM B35, IM V5, IM B5 and IM V1. Other types of construction are available on request.
The position of the condensate drain holes is determined by the type of construction.

Housing

The housing and terminal box of the motor are made of gray cast iron. The DE flange and the feet (bolted‑on) can be supplied in GGG 40 as an option.

Degree of protection

The degree of protection of the standard motor models is IP55. IP56 is also available as an option. The water drain holes on motors with this degree of protection must be opened at regular intervals as part of the maintenance cycle to allow any condensate that has collected inside the motor to drain off.

Paint finish

The motors are coated as standard in a special finish RAL 7030 with a coat thickness of 180 μm. Other colors are available at additional cost. A further option is an offshore finish with a coat thickness of 220 μm.

Mounted equipment

Sensing equipment such as the POG 10 incremental encoder (made by Baumer Hübner) can be mounted on the motors. The brakes themselves can be supplied with an emergency manual release mechanism (see spring‑operated brake for SIMOTICS SD 1LG4/1LG6, special version "Emergency release with hand lever").

Terminal box

On standard models, the terminal box is mounted on the top at the DE and is always the next size larger than on the basic models of the 1LG motor. The feet are cast on.

The terminal box can also be positioned on the left or right (as viewed from the DE), but this option is only possible on motors with bolted‑on feet. If the motor is to have bolted‑on feet and a terminal box positioned on top, options K11 and J22 must be selected in the order.

On motors with a brake, the terminal box is fitted at the NDE. The option M64 must be specified additionally.

All connecting terminals for the motor and brake including auxiliaries are housed in the motor terminal box.

¹⁾ If the motor has been ordered with temperature sensor, an extra M20 × 1.5 hole is provided. If the motor has been ordered with heater, an extra M20 × 1.5 hole is provided.

Auxiliary terminal designations

Shaft extension

Standard brake motors are designed with a cylindrical shaft extension.

Maximum speed

The maximum permissible speed is 3000 rpm.

Bearing