Ordering data

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 version of brake coil is supplied for connection to 207 V DC (see section technical specifications for brakes).

Motor protection

The following protective equipment can be installed (see section "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 section "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 versions 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 Ојm. Other colors are available at additional cost. A further option is an offshore finish with a coat thickness of 220 Ојm.

Mounted equipment

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

Terminal box

On standard versions, the terminal box is mounted on the top at the DE and is always the next size larger than on the basic versions 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 Г— 1.5 hole is provided. If the motor has been ordered with heater, an extra M20 Г— 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