Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 16)

SED2 VFD Electronic Bypass Option Operating Instructions
8 Siemens Building Technologies, Inc.
Pushbutton/Indicator Description
INTERLOCK START LOGIC
Enable Commanded Proofed
VFD0108R1
When the Interlock DIP switch is enabled, the Interlock Start Logic Enable
indicator is on steady. Any call to start the motor in either VFD or bypass
modes will not start the motor; instead it will close the Programmable
Output relay on the Controller board.
The Programmable Output can be used to actuate another device. When
this occurs, the Interlock Start Logic Commanded indicator also lights,
and the Interlock Start Logic Proofed indicator flashes.
A contact closure from this other device is wired to the Interlock Start on
the Controller board which then starts the motor and turns the Interlock
Start Logic Proofed indicator on steady. This feature is also called
damper end switch relay logic.