Siemens SED2 VFD Electronic Bypass Option 125-3208 User Manual

Siemens Building Technologies, Inc. 

 

29 

 

P1082 

0 Hz to 650 Hz 

Maximum motor frequency at 
which the motor will run 
regardless of the frequency 
setpoint. This value applies to 
both clockwise and 
counterclockwise rotation. 

1. Press   to advance to 

parameter P1082. 

2. Press   to access the 

parameter values level. 

3. Press   to advance it desired 

value. 

4. Press   to confirm and save 

the setting. 

Site Setting 

Default = 50 or 
60 

(Default is 
determined by 
the setting of 
the motor 
frequency and 
unit of 
measurement 
DIP switches.) 

This value is limited internally to 200 Hz or five times the rated motor frequency (P0305). When P1300 is 
greater than or equal to 20 (control mode = vector control), the value displays via r0209 (maximum 
frequency). 

P1120 

 

0s to 650s 

1. Press   to advance to 

parameter P1120. 

2. Press   to access the 

parameter values level. 

3. Press   to advance it desired 

value. 

4. Press   to confirm and save 

the setting. 

Site Setting 

Default = 10 

Typical fan = 
120s 

Typical pump = 
30s 

 

1.  Setting the ramp-up time too short can cause the SED2 to trip (F0001 over current, F0002 over voltage, 

or F0003 under voltage). 

2.  If using an external frequency setpoint with set ramp rates (such as from a PLC), achieve optimum 

SED2 performance by setting ramp time (P1120 and P1121) slightly shorter than those of the PLC.