Operating Instructions

SED2 Operation & Maintenance Manual Addendum
184 Siemens Building Technologies, Inc.
r1261, Contactor control word
r1261 is a read parameter for the bypass/contactor function. It shows how the motor is driven
as follows:
Bit 00, Motor supplied by Drive:
0=Yes
1=No
Bit 01, Motor supplied by Mains:
0=Yes
1=No
P1262, Bypass dead time
Time delay between switching contactors (SED2 to bypass/contactor and vice versa) to allow
motor to demagnetize (Figure 49).
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 49).
Setting range: 0 to 300 second
Recommended setting: 1 second (default).