Torque Current Configurations (Torque Config); Block Generating The Torque Setpoint, The Torque Current Limit Control And The Zero Torque; (Torque Setpoint - Torque Curr Lim - Zero Torque Cmd) - GE AV-300i User Manual

1.9 TORQUE CURRENT CONFIGURATIONS (TORQUE CONFIG)

1.9.1 Block Generating the Torque Setpoint, the Torque Current Limit Control and the
Zero Torque. (Torque Setpoint - Torque Curr Lim - Zero Torque Cmd)
The Block generates the Torque Current Setpoint.
The inputs are:
· the output of the Speed regulator if it is enabled
· the additional Torque setpoint
· the Current limit, which is also controlled, by Drive, the Motor and BU I2t function
· Flux, for flux compensation of the Torque current
N !
OTE
to see Torque control Block figure
The Block add the output of the Speed regulator and the additional Torque reference 2.
With SpeedTorque control Mode function, SpdTrq ctrl mode, it possible to select the behaviour of
the reference Torque reference 1 + Torque reference 3 control over Torque current reference limit.
The Torque ref 1 + Torque ref 3 behavior: · OFF
The SpdTrq mode src source selects the origin signal for the SpeedTorque control Mode function. This source is
default connected to Int SpdTrq mode. It that can be set in the following configurations:
OFF, Symmetrical lim, Positive lim, Negative lim, Positive SpeedTorque, Negative SpeedTorque
· OFF (0)
Symmetrical lim, Positive lim, Negative lim
The speed regulator is saturated by the Speed reference selections. Using Torque ref 1 and/or
it is possible to regulate the output torque from the maximum to zero. In case of slippage or material break, the
speed will increase up to reach the speed reference, or until the net torque ref is below needed load current. It is
possible to select Torque ref 1 + Torque ref 3 to act:
· Symmetrical lim (1) On positive and negative limits symmetrically (Torque ref sum must be positive; if it's
· Positive lim (2)
· Negative lim (3)
Positive SpeedTorque, Negative SpeedTorque
In this case the torque requested by the Speed regulator is compared with the sum of Torque ref 1 + Torque ref
3. If the Net Torque ref is lower in respect to the Speed regulator command, the Torque ref wins and it is given
as reference to the Current regulator (Iq Current). Otherwise the Speed regulator command will produce the
reference for the current regulator. It is possible to select Torque ref 1 + Torque ref 3 to act:
Ch.1
110
· Limiting the requested Torque
· SpeedTorque mode
Disabled
negative the value is clamped to zero)
Torque ref only modifies the Positive limit (Torque ref sum must be positive; if it's
negative the value is clamped to zero)
Torque ref only modifies the negative limit (Torque ref sum must be negative; if it's
positive the value is clamped to zero)
—————— Function Description ——————
GEH-6641E
Torque ref 3