1.0 s
t
1.0 s
0
100 %
100 %
3 Functions

Issue 07/04

3.5.5.15Inverter-specific Functions Flying start

P1200 =...

P1202 =...

P1203 =...

Flying start

Starts inverter onto a spinning motor by rapidly changing the output frequency of the inverter until the actual motor speed has been found.

0Flying start disabled

1Flying start is always active, start in direction of setpoint

2Flying start is active if power on, fault, OFF2, start in direction of setpoint

3Flying start is active if fault, OFF2, start in direction of setpoint

4Flying start is always active, only in direction of setpoint

5Flying start is active if power on, fault, OFF2, only in direction of setpoint

6Flying start is active if fault, OFF2, only in direction of setpoint

Motor-current: Flying start (entered in %)

Defines search current used for flying start.

Search rate: Flying start (entered in %)

Sets factor by which the output frequency changes during flying start to synchronize with turning motor.

Automatic restart

P1210 =... Automatic restart

Configures automatic restart function.

0Disabled

1Trip reset after power on

2Restart after mains blackout

3Restart after mains brownout or fault

4Restart after mains brownout

5Restart after mains blackout and fault

6Restart after mains brown/blackout or fault

0

Holding brake

P1215 =...

Holding brake enable

0

Enables/disables holding brake function (MHB).

0Motor holding brake disabled

1Motor holding brake enabled

NOTE

The following must apply when controlling the brake relay via a digital output: P0731 = 14 (refer to Section 3.5.5.4 "Digital ").

f

 

 

 

 

 

 

 

 

fmin

 

 

 

 

(P1080)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

r0052

P1216

 

 

 

Point 1

Bit121

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

t

P1217

Point 2

P1216 =...

P1217 =...

Holding brake release delay (entered in s)

Defines the time interval during which the frequency inverter runs with the min. frequency P1080 after magnetizing, before the ramp-up starts.

Holding time after ramp-down (entered in s)

Defines time for which inverter runs at minimum frequency (P1080) after ramping down.

MICROMASTER 420

Operating Instructions

6SE6400-5AA00-0BP0

81

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Image 81
Siemens 420 manual Inverter-specific Functions Flying start, Automatic restart, Holding brake