Parameters
List of parameters
1-154
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Description: Displays the rated motor starting time. This time corresponds to the time from standstill up to reaching the motor
rated speed and the acceleration with motor rated torque (r0333).
Dependency: Refer to: r0313, r0333, r0336, p0341, p0342
Description: Sets the excitation build-up time of the motor.
This involves the delay time between enabling the pulses and enabling the ramp-function generator. The induction
motor is magnetized during this time.
Caution: For insufficient magnetization under load or if the acceleration rate is too high, then an induction motor can stall
(refer to the note). This is especially true for sensorless vector control or V/f control.
Notice: If the parameter is set to 0 s for separately-excited synchronous motors (p0300 = 5), then an excitation current set-
point is generated even if the drive is powered-down. In the base speed range, this is the no-load excitation current
(p0389). In the field-weakening range, the value is reduced with the inverse value of the actual speed. An excitation
current setpoint is not generated during de-magnetization (p0347) and if an encoder fault is detected.
Note: The parameter is calculated using p0340 = 1, 3.
For induction motors, the result depends on the rotor time constant (r0384). If this time is excessively reduced, this
can result in an inadequate magnetization of the induction motor. This is the case if the current limit is reached while
building-up magnetization. For induction motors, the parameter cannot be set to 0 s (internal limit: 0.1 * r0384).
For permanent-magnet synchronous motors and vector control, the value depends on the stator time constant
(r0386). Here, it defines the time to establish the current for sensorless operation immediately after the pulses have
been enabled.
Description: Sets the de-magnetizing time (for induction motors) after the inverter pulses have been canceled.
The inverter pulses cannot be switched-in (enabled) within this delay time.
For SERVO, the de-excitation time is only used for the DC current brake.
Note: The parameter is calculated using p0340 = 1, 3.
For induction motors, the result depends on the rotor time constant (r0384).
if this time is shortened too much, then this can result in an inadequate de-magnetization of the induction motor and
in an overcurrent condition when the pulses are subsequently enabled (only when the flying restart function is acti-
vated and the motor is rotating).
r0345[0...n] Nominal motor starting time / Mot t_start_rated
VECTOR Can be changed: - Calculated: - Access level: 3
Data type: Floating Point Dynamic index: MDS, p0130 Func. diagram: -
P-Group: Motor Units group: - Unit selection: -
Not for motor type: REL Expert list: 1
Min Max Factory setting
- [s] - [s] - [s]
p0346[0...n] Motor excitation build-up time / Mot t_excitation
VECTOR Can be changed: C2(3), U, T Calculated: CALC_MOD_REG Access level: 3
Data type: Floating Point Dynamic index: MDS, p0130 Func. diagram: -
P-Group: Motor Units group: - Unit selection: -
Not for motor type: - Expert list: 1
Min Max Factory setting
0.000 [s] 20.000 [s] 0.000 [s]
p0347[0...n] Motor de-excitation time / Mot t_de-excitat.
SERVO Can be changed: C2(3), U, T Calculated: CALC_MOD_REG Access level: 3
Data type: Floating Point Dynamic index: MDS, p0130 Func. diagram: -
P-Group: Motor Units group: - Unit selection: -
Not for motor type: - Expert list: 1
Min Max Factory setting
0.000 [s] 20.000 [s] 0.000 [s]
To Next Page
Loading...
Need help?
General
