Operating instructions

Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without encoder
Drive converter cabinet units
292 Operating Instructions, 10/2008, A5E00288214A
Motor data for permanent-magnet synchronous motors
Table 7- 2 Motor data type plate
Parameter Description Comments
p0304 Rated motor voltage If this value is not known, the value "0" can also be
entered.
Entering the correct value, however, means that the
stator leakage inductance (p0356, p0357) can be
calculated more accurately.
p0305 Rated motor current
p0307 Rated motor power
p0310 Rated motor frequency
p0311 Rated motor speed
p0314 Motor pole pair number If this value is not known, the value "0" can also be
entered.
p0316 Motor torque constant If this value is not known, the value "0" can also be
entered.
If the torque constant k
T
is not stamped on the rating plate or specified in the data sheet, you
can calculate this value from the rated motor data or from the stall current I
0
and stall torque
M
0
as follows:
N N
N
min
s
N
N
T
I n 2
P 60
I
M
k
× × π
×
= =
or
0
0
T
I
M
k =
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 Optional motor data
Parameter Description Comments
p0320 Rated motor short-circuit current This is used for the field weakening characteristic
p0322 Maximum motor speed Maximum mechanical speed
p0323 Maximum motor current De-magnetization protection
p0325 Rotor position identification current, 1st phase -
p0327 Optional load angle Optional otherwise leave at 90°
p0328 Reluctance torque constant -
p0329 Rotor position identification current -
p0341 Motor moment of inertia For speed controller pre-control
p0344 Motor weight -
p0350 Stator resistance, cold -
p0356 Quadrature axis stator inductance Lq -
p0357 In-line stator inductance Ld -