Siemens CU240B-2 Parameter Manual page 52

Parameters
List of Parameters
p0294 Power unit alarm with I2t overload / PU I2t alrm thresh
Access level: 4
Can be changed: U, T
Units group: -
Min
10.0 [%]
Description: Sets the alarm threshold for the I2t power unit overload.
If this threshold is exceeded, an overload alarm is generated 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
Units group: -
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 exces-
sively high heat sink temperature).
- For values less than 1 s, a 1 s run on time for the fan is active.
- for a PM230 power unit, sizes D - F the parameter is ineffective.
r0296 DC link voltage undervoltage threshold / Vdc U_lower_thresh
Access level: 3
Can be changed: -
Units group: -
Min
- [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 U_upper_thresh
Access level: 3
Can be changed: -
Units group: -
Min
- [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
1-52
Calculated: -
Scaling: -
Unit selection: -
Max
100.0 [%]
Calculated: -
Scaling: -
Unit selection: -
Max
600 [s]
Calculated: -
Scaling: -
Unit selection: -
Max
- [V]
Calculated: -
Scaling: -
Unit selection: -
Max
- [V]
SINAMICS G120 / Control Units CU240B/E-2 Parameter Manual (LH11), 01/2011
Data type: FloatingPoint32
Data set: -
Factory setting
95.0 [%]
Data type: FloatingPoint32
Data set: -
Factory setting
0 [s]
Data type: Unsigned16
Data set: -
Factory setting
- [V]
Data type: Unsigned16
Data set: -
Factory setting
- [V]
© Siemens AG 2011 All Rights Reserved