Technical data

Chapter 3 – Programming
Siemens Building Technologies, Inc. 139
P1262, Bypass dead time
Time delay between switching contactors (SED2 to bypass/contactor and vice versa) to allow
motor to demagnetize (Figure 11).
Setting range: 0 to 20 s
Recommended setting: 1 second (default)
P1263, De-bypass time
Defines the time before a request to switch from bypass/contactor to SED2 is executed
(Figure 11).
Setting range: 0 to 300 second
Recommended setting: 1 second (default).
P1264, Bypass time
Time delay before a request to switch to mains is executed (Figure 11).
Setting range: 0 to 300 second
Recommended setting: 1 second (default).
Complete parameter setting by changing over to automatic control.
P1264 P1262 P1262P1263
t (s)
(Bypass request)
Bypass contactor
VSD contactor
Alarm
5192D03en
Figure 11. Bypass Timing Diagram.