ABB ACSM1 Firmware Manual page 114

114
20.03 POS SPEED ENA
Selects the source of the positive speed reference enable command.
1 = Positive speed reference is enabled.
0 = Positive speed reference is interpreted as zero speed reference (In the figure below 3.03
SPEEDREF RAMP IN is set to zero after the positive speed enable signal has cleared). Actions in
different control modes:
Speed control: Speed reference is set to zero and the motor is stopped along the currently active
deceleration ramp.
Torque control: Torque limit is set to zero and the rush controller stops the motor.
3.03 SPEEDREF RAMP IN
1.08 ENCODER 1 SPEED
Example: The motor is rotating in the forward direction. To stop the motor, the positive speed enable
signal is deactivated by a hardware limit switch (eg, via digital input). If the positive speed enable
signal remains deactivated and the negative speed enable signal is active, only reverse rotation of the
motor is allowed.
Bit pointer: Group, index and bit
20.04 NEG SPEED ENA
Selects the source of the negative speed reference enable command. See parameter
SPEED
Bit pointer: Group, index and bit
20.05 MAXIMUM CURRENT
Defines the allowed maximum motor current.
0...30000 A
20.06 MAXIMUM TORQUE
Defines the maximum torque limit for the drive (in percent of the motor nominal torque).
0...1600%
20.07 MINIMUM TORQUE
Defines the minimum torque limit for the drive (in percent of the motor nominal torque).
-1600...0%
20.08 THERM CURR LIM
Enables the thermal current limitation. Thermal current limit is calculated by the inverter thermal
protection function.
Parameters and firmware blocks
20.03 POS SPEED ENA
20.04 NEG SPEED ENA
ENA.
FW block: LIMITS (see above)
FW block: LIMITS (see above)
FW block: LIMITS (see above)
Maximum allowed motor current.
FW block: LIMITS (see above)
Maximum torque limit.
FW block: LIMITS (see above)
Minimum torque limit.
FW block: None
20.03 POS