5
Startup
Hoist function
Operating Instructions – MOVITRAC
®
LTP-B
75
5.5.1 General information
• Clockwise rotating field of the motor corresponds to upward direction.
• Counterclockwise rotating field of the motor corresponds to downward direction.
• Stop the motor to reverse the direction of rotation. To do so, activate the brake.
Set the controller inhibit before you reverse the direction of rotation.
5.5.2 Startup for hoist function
Refer to the following section for recommendations for the startup.
Motor data:
• P1-03/04: Ramp time as short as possible
• P1-07: Nominal motor voltage
• P1-08: Nominal motor current
• P1-09: Rated motor frequency
• P1-10: Nominal motor speed
Parameter activation:
• P1-14 = 201 (extended parameter menu)
Motor control:
• P4-01 = 0 (VFC speed control)
• P4-05 = Cos φ
In VFC operation, the automatic measuring procedure has to be performed. To
do so, the motor has to be as cold as possible.
Hoist parameter:
P4-12 = 1 (hoist function activated)
Thermal braking resistor protection:
If no sensor is used for protecting the braking resistor, the following parameters can
be used optionally for protection against overtemperature of the braking resistor. How-
ever, only a sensor provides adequate protection.
• P6-19: Braking resistance value
• P6-20: Braking resistance power
INFORMATION
When hoist mode is activated, the inverter has to be started with the enable. If the
enable is set at the same time or prior to STO, the inverter stays in "STOP" mode.
To ensure fault-free operation, a braking resistor has to be installed.
25813137/EN – 08/2018
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