List of Parameters
Parameters
1-39
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Notice: P0290 = 0, 2:
• Reduction of output frequency is only effective if the load is also reduced.
This is for example valid for light overload applications with a quadratic torque characteristic as pumps or fans.
• For settings P0290 = 0 or 2, the I-max controller will act upon the output current limit (r0067) in case of overtem-
perature.
P0290 = 0:
• With pulse frequencies above nominal, pulse frequency will be reduced to nominal immediately in the event of
r0027 greater than r0067 (current limit).
P0290 = 2, 3:
• The pulse frequency P1800 is reduced only if higher than 2 kHz and if the operating frequency is below 2 Hz.
• The actual pulse frequency is displayed in parameter r1801.0 and the minimal pulse frequency for reduction is
displayed in r1801.1.
• Inverter I2t acts upon output current and output frequency, but not on pulse frequency.
A trip will always result, if the action taken does not sufficiently reduce internal temperatures.
Description: Bit 00 for enabling/disabling automatic pulse frequency reduction at output frequencies below 2 Hz.
The benefit is to reduce the noises at frequencies below 2 Hz.
Bit 02 shows if phase loss detection (input phase) of 3 phase inverters is enabled after factory reset.
Default setting of phase loss is disabled for FSA - FSC. FSD and greater it is enabled.
Note: See P0290 (inverter overload reaction)
Description: Defines the temperature difference (in °C) between the overtemperature trip threshold (F0004) and the warning
threshold (A0504) of the inverter.
The trip threshold is stored internally by the inverter and cannot be changed by the user.
Description: Defines the [%] value at which alarm A0505 (inverter I2t) is generated.
Inverter I2t calculation is used to determine a maximum tolerable period for inverter overload.
The I2t calculation value is deemed = 100 % when this maximum tolerable period is reached.
Dependency: • The output current of the inverter has been reduced.
• The value of I2t does not exceed 100 %.
Note: P0294 = 100 % corresponds to stationary nominal load.
p0291[0...2] Inverter protection / Inverter protect.
Access level: 4 P-Group: Converter Data type: Unsigned16
Quick comm. NO Active: YES Data set: DDS
Can be changed: T
Min Max Factory setting
- - 0001 bin
Bit field: Bit Signal name 1 signal 0 signal FP
01 reserved Yes No -
02 Phase loss detection enable Yes No -
p0292 Inverter temperature warning / Inv. temp. warn.
Access level: 3 P-Group: Converter Data type: Unsigned16
Quick comm. NO Active: NO Data set: -
Can be changed: U, T
Min Max Factory setting
0 [°C] 25 [°C] 5 [°C]
p0294 Inverter I2t warning / Inv. I2t warn.
Access level: 4 P-Group: Converter Data type: Floating Point
Quick comm. NO Active: NO Data set: -
Can be changed: U, T
Min Max Factory setting
10.0 [%] 100.0 [%] 95.0 [%]
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