LC30 Maximum Torque
The maximum torque setting is used to limit the output current. For induction motors, the
limit prevents the motor from exceeding its breakdown torque limit.
If the maximum torque setting is reached, the corresponding output current will be limited
which may cause the acceleration process to take longer or stall with a full load or may
also cause the car to overshoot the floor during deceleration.
Default Setting: 150%
The maximum output current is then limited to the following:
Max Current = (LC30 Maximum Torque / 100) X LM03 Motor Current
regardless of how high the LC30 Maximum Torque may be set.
Ensure proper low default setting.
The low default setting is to protect the motor from excessively high
current which may occur during the commissioning process if there are
incorrect parameter settings (e.g., motor data incorrect, encoder A/B
phasing or ppr incorrect, encoder position for PM synchronous motor
incorrect, etc.). The default setting should be sufficient to enable
inspection operation with empty car. Under normal high-speed operation,
this value will likely need to be increased, typically in the range of 200-
250% of rated motor torque.
LC31 Reduced Maximum Torque
The reduced maximum torque limit is activated when using an LI04-LI11 input assigned
as Reduced Torque (2). This allows the drive to limit the torque and therefore the output
current to prevent the drive from drawing too much current from a battery backup supply.
Default Setting: 100%
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