Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37) - Manual (Page 100)

9400 HighLine | Parameter setting & configuration
Motor interface
Parameter setting | Motor monitoring (I²xt)
100 Firmware 1.37 - 09/2006
L
Speed-dependent evaluation of the motor current
By selecting a characteristic in
C01196/1...8 the permissible motor current is evaluated
depending on speed for calculating the thermal motor utilisation.
r The speed-dependent evaluation can be more or less switched off by setting C01196/
1...8 to "100 %" each. The calculation simplified due to this setting corresponds to the
calculation in previous devices (e.g. servo inverter 9300 or ECS).
Parameters Characteristic point
C01196/1 n
1
/n
n
Speed = "0" (standstill)
C01196/2 I
1
/I
n
Permissible motor current at standstill
C01196/3 n
2
/n
n
Speed from which the torque must be reduced with self-ventilated motors.
• Below this speed the cooling air flow of the integral fan is not sufficient
anymore.
C01196/4 I
2
/I
n
Permissible motor current at speed n
2
(torque reduction)
C01196/5 n
3
/n
n
Rated speed
C01196/6 I
3
/I
n
Permissible motor current at rated speed
C01196/7 n
4
/n
n
Speed above the rated speed (in the field weakening in case of asynchronous
motors)
C01196/8 I
4
/I
n
Permissible motor current at speed n
4
(field weakening)
Note!
Self-ventilated standard motors are protected insufficiently by setting C01196/
1...8 to "100 %" each at low speeds.
Servo motors, however, do not have a point from which the torque must be
reduced due to a too low speed.
• When setting the characteristic in
C01196/1...8 this point must not be
ignored. Hence, point 2 is to be set ideally to point 1 or point 3.