Automatic Restart; Table 3-22 Automatic Restarts - Siemens MICROMASTER 420 Operating Instructions Manual

Issue 07/04
3.15

Automatic restart

Parameter range:
Warnings
Faults
Function chart number:
After a power failure (F0003 "Undervoltage"), the "Automatic restart" function
(enabled using P1210) automatically powers-up the drive inverter again. Any faults
are automatically acknowledged by the drive inverter.
When it comes to power failures (line supply failure), then a differentiation is made
between the following conditions:
Line undervoltage (brownout)
"Line undervoltage" is a situation where the line supply is interrupted and returns
before (if installed) the BOP display has gone dark (this is an extremely short line
supply interruption where the DC link hasn't completely collapsed).
Line failure (blackout)
"Line failure" is a situation where the display has gone dark (this represents a
longer line supply interruption where the DC link has completely collapsed) before
the line supply returns.
The automatic restart function P1210 is shown in the following diagram (refer to
Table 3-22) as a function of external states / events.
Table 3-22 Automatic restarts
P1210
Fault F0003 on
Blackout
0
1
Fault acknowl.
Fault acknowl.
2
+
restart
Fault acknowl.
3
+
restart
Fault acknowl.
4
+
restart
Fault acknowl.
5
+
restart
Fault acknowl.
6 +
restart
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
P1210
P1211
A0571
F0035
-
ON always active (permanent)
All other faults on
Brownout Blackout
Fault acknowl.
Fault acknowl. Fault acknowl.
+ +
restart restart
Fault acknowl.
+
restart
Fault acknowl.
+
restart
Fault acknowl. Fault acknowl.
+ +
restart restart
ON in no-voltage condition
All faults on
Brownout
Blackout
Fault acknowl.
Fault acknowl. Fault acknowl.
+ +
restart restart
Fault acknowl.
+
restart
Fault acknowl. Fault acknowl.
+ +
restart restart
3 Functions
No faults on
Blackout
Restart
Restart
Restart
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