4.9.12 Electric motors and related equipment
The hoist motors meet the standards of EN 60034-1 and are specially dimensioned and
designed for hoist operating conditions.
Hoist motor
• 12/2-pole motor with separately controlled D.C. brake for contactor control
• The brake is designed as an operating brake
or
• 4-pole motor with separately controlled D.C. brake for frequency control
• The brake is designed as a holding brake and discharges the function of emergency
stop
• Encoder with 600 pulses/rotation mounted on motor as standard (see encoder type
plate and electrical switch diagrams).
Travel motor
• 8/2- pole motor with separately controlled D.C. brake for contactor control
• Integrated centrifugal mass for smooth acceleration and braking
or
• 4- pole motor with separately controlled D.C. brake for frequency control
The motors are equipped with closable condensation holes 1). All motors have ptc
sensors integrated into the winding as thermal overload protection.
Specification:
Thermal class: F / H Utilization / insulation system
Construction: IM B5 flange mounting on drive side
Cooling: IC 411 surface cooling with integrated fan
Standard operating conditions
• -4°F … +104°F
• Humidity up to 80%
• Air pressure up to 3280 ft above sea level
Options
• IP 66 1)
• Forced ventilation
• Space heating 1)
• Manual release for brake
1)
Motors whose winding is subject to condensation due to climatic conditions, e.g. motors
standing still in damp environments or motors exposed to high temperature fluctuations
can be equipped with space heaters. They must also always be used in combination with
type of protection IP 66 and high humidity.
4.10 YK/SK hoists with frequency inverter (VFD)
For information on the frequency inverter, see the separate instructions.
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