Siemens SED2 VFD Electronic Bypass Option 125-3208 User Manual
Application Feature Setup
Siemens Building Technologies, Inc.
43
NOTES:
1. All safety conditions must be met for bypass mode operation.
2. The input contactor remains energized.
The Electronic Bypass Option will return to VFD mode operation as soon as the
SED2 Relay in control opens. When the Electronic Bypass Option returns to VFD
mode operation, the following occurs:
SED2 Relay in control opens. When the Electronic Bypass Option returns to VFD
mode operation, the following occurs:
• The SED2 Relay opens, the Programmable Output on the Controller
board opens, and the bypass contactor opens.
• The output contactor closes.
NOTE:
All safety conditions must be met for VFD mode operation.
Settings
The Auto Bypass feature requires that Controller board
DIP Switch 2 is set ON.
DIP Switch 2 is set ON.
NOTE:
During operation, the Auto Bypass Enabled
indicator is on steady.
indicator is on steady.
ON
12
5
34
12
5
34
ON
OFF
SW1
VFD0117R1
Example SED2 Settings
Set parameters P0732 and P0748 for Auto Bypass on Drive Fault. Programming of
the SED2 Relay is required for proper Auto Bypass activation. Set P0732 and P0748
as follows:
the SED2 Relay is required for proper Auto Bypass activation. Set P0732 and P0748
as follows:
Parameter Setting
P0732 in000
52.3
P0732 in001
52.3
P0748