Technical data

SED2 Operation & Maintenance Manual Addendum
138 Siemens Building Technologies, Inc.
Chapter 3 - Programming
Bypassing the SED2
There are applications demanding maximum
motor output. Additionally, there are
applications requiring a SED2 bypass system
for safety reasons. For these cases, the SED2
has an integrated bypass function.
Parameter setup for bypass function
(commissioning)
P1260, Source of changeover control
Defines the possible sources for changing
over to bypass/contactor operating mode.
Possible settings:
0=Bypass disabled (factory setting).
1=Controlled by SED2 trip.
2=Controlled by DIN, see P1266, Bypass
command.
3=Controlled by DIN and SED2 trip.
4=Controlled by SED2 frequency.
5=Controlled by SED2 frequency and SED2
trip.
6=Controlled by SED2 frequency and DIN.
7=Controlled by SED2 frequency and DIN and
SED2 trip.
SED2
Mains supply
Motor starters
Mechanical
interlock
5192Z25en
Figure 10. Bypassing the SED2.
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