Siemens SINAMICS G120X, Руководство по эксплуатации

Страница: 512 / 1148

Dependency: If a sine-wave filter is parameterized as output filter (p0230 = 3, 4), then only responses can be selected without pulse
frequency reduction (p0290 = 0, 1).
For a thermal power unit overload, an appropriate alarm or fault is output, and r2135.15 or r2135.13 set.
See also: r0036, r0037, p0230, r2135
See also: A05000, A05001, A07805
NOTICE
If the thermal overload of the power unit is not sufficiently reduced by the actions taken, the drive is always shut down.
This means that the power unit is always protected irrespective of the setting of this parameter.
Note
The setting p0290 = 0, 2 is only practical if the load decreases with decreasing speed (e.g. for applications with variable
torque such as for pumps and fans).
Under overload conditions, the current and torque limit are reduced, and therefore the motor is braked and forbidden
speed ranges (e.g. minimum speed p1080 and suppression [skip] speeds p1091 ... p1094) can be passed through.
For p0290 = 2, 3, 12, 13, the I2t overload detection of the power unit does not influence the response "Reduce pulse
frequency".
When the motor data identification routine is selected, p0290 cannot be changed.
For short-circuit/ground fault detection, when the test pulse evaluation is active via p1901 "Test pulse evaluation
configuration", the pulse frequency at the instant of switch on is briefly reduced.
p0290 Power unit overload response / PU overld response
G120X_DP (PM330),
G120X_PN (PM330),
G120X_USS (PM330)
Access level: 4 Calculated: - Data type: Integer16
Can be changed: T Scaling: - Dynamic index: -
Unit group: - Unit selection: - Function diagram: 8021
Min:
0 Max:
3 Factory setting:
2
Description: Sets the response to a thermal overload condition of the power unit.
The following quantities can result in a response to thermal overload:
- heat sink temperature (r0037[0]).
- chip temperature (r0037[1]).
- power unit overload I2t (r0036).
Possible measures to avoid thermal overload:
- reduce the output current limit r0289 and r0067 (for closed-loop speed control) or the output frequency (for U/f control
indirectly via the output current limit and the intervention of the current limiting controller).
- reduce the pulse frequency.
A reduction, if parameterized, is always realized after an appropriate alarm is output.
Value: 0: Reduce output current or output frequency
1: No reduction shutdown when overload threshold is reached
2: Reduce I_output or f_output and f_pulse (not using I2t)
3: Reduce the pulse frequency (not using I2t)
Dependency: If a sine-wave filter is parameterized as output filter (p0230 = 3, 4), then only responses can be selected without pulse
frequency reduction (p0290 = 0, 1).
For a thermal power unit overload, an appropriate alarm or fault is output, and r2135.15 or r2135.13 set.
See also: r0036, r0037, p0230, r2135
See also: A05000, A05001, A07805
NOTICE
If the thermal overload of the power unit is not sufficiently reduced by the actions taken, the drive is always shut down.
This means that the power unit is always protected irrespective of the setting of this parameter.
Parameters
7.2 Parameter list
SINAMICS G120X converter
510
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC