Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without encoder
Inverter chassis units
368 Operating Instructions, 07/2016, A5E00331449A
The optional motor data can be entered if it is known. Otherwise, this data is estimated from
the type plate data or determined by means of motor identification or speed controller
optimization.
Table 7- 3 Motor data type plate
Rated motor short-circuit current
For field weakening characteristic
p0322 Maximum motor speed Maximum mechanical speed
De-magnetization protection
p0325 Rotor position identification current, 1st phase -
Optional otherwise leave at 90°
Reluctance torque constant
Rotor position identification current
For speed controller pre-control
Quadrature axis stator inductance Lq
In-line stator inductance Ld
For short-circuits that can occur in the drive converter or in the motor cable, the rotating
machine would supply the short-circuit until it comes to a standstill. An output contactor can
be used for protection. This should be located as close as possible to the motor. This is
particularly necessary if the motor can still be driven by the load when a fault develops. The
contactor must be provided with a protective circuit against overvoltage on the motor side so
that the motor winding is not damaged as a result of the shutdown.
Control signal r0863.1 (VECTOR) controls the contactor via a free digital output; the
checkback contact of the contactor is connected to parameter p0864 via a free digital input.
This means that if the drive converter develops a fault with a shutdown response, at the
instant in time that the pulses are inhibited, the motor is isolated from the drive converter so
that energy is not fed back to the fault location.
Vector control - Id setpoint (PEM, p0300 = 2)
Vector control – field weakening controller (PEM, p0300 = 2)
Vector control - interface to Motor Module (PEM, p0300 = 2)
To Next Page
Loading...
