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Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Function outputs
The following table sp ecifies the continuous signal variables of the Speed/To rque
Regulator function.
Variable Description
Speed reg output Cor e regulator output of the Speed/Torque Regulator
function, the scaled and gated sum of proportional
(variabl e Speed reg prop term) and integral (variable
Speed reg int term) regulator components. Newton-
meters or Pound-feet
Torque ref pre limit Final ou tput of the Speed/Torque Regulator function
provided to the motor control interface, the sum of the
primary output of the speed regulator (variable Speed
reg output), torque refererence (gated signal selected by
parameter Torque ref select) and torque feedforward
(non-gated signal selected by parameter Torque feed
fwd sel). Newton-meters or Pound-feet
Speed reg error Primary regulator error signal equal to the difference
between Speed reg reference and Speed reg fbk. RPM
Spd reg integral ref Conditioned error signal which defines the reference to
the regul ator integrat or structur e; differs f rom Speed reg
error only in Torque, spd override mode (see below).
RPM
Speed reg int term Regulator integral component.
Speed reg prop term Regulator proportional component.
Inertia Active inerti a compensation si gnal in use by the
regulator, derived from either the Fixed inertia
parameter or from the variable specified by par ameter
Variable inertia sel. Kilogram-m eters² or Pound-feet²
Speed reg net gain Active net gain compensation in use by the regulator,
the scaled product of Inertia and the parameter Spd reg
net gain.
The following table specifies the logical signal variables of the Speed/Torque
Regulator function.
Variable Description
Speed reg mode Primary state variabl e which reflects the active
regulatio n state of the driv e.
Enable spd reg out Boolean signal from the primary regulator control logic
which enables active signals to the variable Speed reg
output.
Torque mode sel Boolean signal from the primary regulator control logic
which gates the variable Torque ref input.
Speed reg antiwindup Boolean signal indicating that the speed regulator
integrator value is frozen as an anti-windup response.