Siemens CU230P-2 HVAC Parameter Manual page 43

p0292[0...1] Power unit temperature alarm threshold / PU T_alrm thresh
Access level: 3
Can be changed: U, T
Min
0 [°C]
Description: Sets the alarm threshold for power unit overtemperatures. The value is set as a difference to the tripping (shut-
down) temperature.
Drive:
If this threshold is exceeded, an overload alarm is generated and the system responds as parameterized in p0290.
Infeed:
When the threshold value is exceeded, only an overload alarm is output.
Index: [0] = Heat sink temperature
[1] = Power semiconductor (chip) temperature
Dependency: Refer to: r0037, p0290
Refer to: A05000
p0294 Power unit alarm with I2t overload / PU I2t alrm thresh
Access level: 4
Can be changed: U, T
Min
10.0 [%]
Description: Sets the alarm threshold for the I2t power unit overload. If this threshold is exceeded, an overload alarm is gener-
ated and the system responds as parameterized in p0290.
Dependency: Refer to: r0036, p0290
Refer to: A07805
Note: The I2t fault threshold is 100 %. If this value is exceeded, fault F30005 is output.
p0295 Fan run-on time / Fan run-on time
Access level: 3
Can be changed: U, T
Min
0 [s]
Description: Sets the fan run-on time after the pulses for the power unit have been canceled.
Note: Under certain circumstances, the fan can continue to run for longer than was set (e.g. as a result of the excessively
high heat sink temperature).
For values less than 1 s, a 1 s run on time for the fan is effective.
r0296 DC link voltage undervoltage threshold / Vdc V_lower_thresh
Access level: 3
Unit: [V]
Description: If the DC link voltage falls below this threshold, the power unit is shut down due to a DC link undervoltage condition
(F30003).
Dependency: Refer to: p0278
Refer to: F30003
r0297 DC link voltage overvoltage threshold / Vdc V_upper_thresh
Access level: 3
Unit: [V]
Description: If the DC link voltage exceeds the threshold specified here, the drive unit is tripped due to DC link overvoltage.
Dependency: Refer to: F30002
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Calculated: -
Scaling: -
Max
25 [°C]
Calculated: -
Scaling: -
Max
100.0 [%]
Calculated: -
Scaling: -
Max
600 [s]
Calculated: -
Scaling: -
Calculated: -
Scaling: -
Parameters
List of Parameters
Data type: FloatingPoint32
Data set: -
Factory setting
5 [°C]
Data type: FloatingPoint32
Data set: -
Factory setting
95.0 [%]
Data type: FloatingPoint32
Data set: -
Factory setting
0 [s]
Data type: Unsigned16
Data set: -
Data type: Unsigned16
Data set: -
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