Siemens SED2 VFD Electronic Bypass Option 125-3208 用户手册

Siemens Building Technologies, Inc. 

 

31 

If Display Selection for r0000, parameter P0005 = 21 (actual frequency), then the BOP 

display alternately shows setpoint values and the actual value (0 Hz).  

P1200 

 

Starts SED2 into a spinning 
motor by rapidly changing the 
output frequency of the SED2 
until the actual motor speed is 
found. Then, the motor runs up 
to setpoint using the normal 
ramp time.  

0 = Flying start disabled.  
1 = Flying start is always active, 
start in direction of setpoint.  
2 = Flying start is active, if power 
on, fault, OFF2, start in direction 
of setpoint.  
3 = Flying start is active if fault, 
OFF2, start in direction of 
setpoint.  
4 = Flying start is always active, 
only in direction of setpoint.  
5 = Flying start is active if power 
on, fault, OFF2, only in direction 
of setpoint.  
6 = Flying start is active if fault, 
OFF2, only in direction of 
setpoint. 

1. Press   to enter the SED2 

parameter mode and to display 
r0000

.  

2. Press   to advance to 

parameter P1200.  

3. Press   to access the 

parameter values level. 

4. Press   to advance to 

desired setting.  

5. Press   to confirm and save 

the setting. 

Minimum = 0 

Default = 0 

Maximum = 6 

Suggested = 2 

1.  Flying start is useful for motors with high inertia loads.  

2.  Settings 1 through 3 search in both directions. Settings 4 through 6 search only in the direction of the 

setpoint.  

3.  Flying start must be used in cases where the motor may still be turning (such as after a brief input 

power break) or can be driven by the load. Otherwise, overcurrent trips occur.  

4.  If the SED2 faults on F0002 (overvoltage) on a start command, flying start may have to be optimized by 

reducing the values in P1203 and P1202.