Siemens 420 manual Power module protection, General overload monitoring, Fault and shutdown

Issue 07/04 3 Functions

3.20Power module protection

3.20.1General overload monitoring

Parameter range:	P0640, r0067, r1242, P0210
Warnings	A0501, A0502, A0503
Faults	F0001, F0002, F0003
Function chart number:	-

Just the same as for motor protection, MICROMASTER provides extensive protection for the power components. This protection concept is also sub-divided into 2 levels:

Warning and response Fault and shutdown

Using this concept, a high utilization of the power module components can be achieved without the drive inverter being immediately shut down. The power module components are monitored as follows:

Table 3-26 General protection of the power components

	Warning and response	Fault and shutdown
Overcurrent / short circuit	Imax controller for V/f	F0001
	A0501
	r0056 bit 09
	r0056 bit 13
	(refer to Section 3.21.1.2)
DC link overvoltage	Vdc_max controller	F0002
	A0502
	(refer to Section 3.17.1)

The monitoring thresholds for the right-hand column in the table above are permanently saved in the drive inverter and cannot be changed by the user. On the other hand, the threshold levels for the "Warning and response" column can be modified by the user to optimize the system. These values have default settings so that the "Fault and shutdown" thresholds do not respond.

MICROMASTER 420	Operating Instructions
6SE6400-5AA00-0BP0	139