Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 15)

Electronic Bypass Option Overview
Siemens Building Technologies, Inc. 7
Pushbutton/Indicator Description
Input
On/Off
VFD0098R1
The Input On/Off pushbutton is supplied with the optional drive input
contactor. In VFD mode, this switch does nothing. In bypass mode, this
switch closes/opens the input contactor, switching the SED2 power on/off.
Enable
VFD0099R1
Enables SED2 operation by closing the input and output contactors.
Hand
Start
VFD0100R1
Manually enables bypass mode operation by ensuring that the output
contactor is open and then closing the bypass contactor.
Remote
Start
VFD0101R1
Activates the bypass mode and operates the bypass contactor according
to the status of the Remote Start input on the Controller board.
STOP
RESET
VFD0102R1
Opens the output and bypass contactors, disconnecting the motor.
VFD Fault
Safety Fault
Overload Fault
VFD0103R1
When a VFD Fault is indicated, the VFD Fault indicator lights and the
VFD Fault Relay output on the Controller Board is triggered.
VFD Fault
Safety Fault
Overload Fault
VFD0104R1
The Safety Fault indicator lights when either of the Remote Safety inputs
on the Controller board opens. The motor is prohibited from operating in
either the VFD or bypass modes while either of these contacts is open.
EXCEPTION: Essential Services ignores a Safety Fault.
NOTE: If not using the Remote Safety feature, hard wire the two
Remote Safety inputs.
VFD Fault
Safety Fault
Overload Fault
VFD0105R1
If the Electronic Bypass Option current overload relay trips, the Overload
Fault indicator lights and the motor will not run in bypass mode.
Auto Bypass Enabled
Essential Services
VFD0106R1
When the Auto Bypass DIP switch is enabled, the Auto Bypass Enabled
indicator is on steady. Bypass operation is automatically initiated by the
SED2.
When Auto Bypass is active, the Auto Bypass Enabled indicator flashes.
Auto Bypass Enabled
Essential Services
VFD0107R1
When the Essential Services DIP switch is enabled, the Essential
Services indicator is on steady.
When the Essential Services input is open, normal operation is indicated
as the output contactor remains closed to keep the motor running and the
Essential Services indicator is on steady.
When the Essential Services input is closed, the bypass contactor closes
and the Essential Services indicator flashes.
Nothing can interrupt the Essential Services mode except for the
Essential Services input opening.