Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 28)

SED2 VFD Electronic Bypass Option Operating Instructions
20 Siemens Building Technologies, Inc.
After the basic sanity test, if the DIP switches have not changed and there is no
operator intervention, the most recent bypass function is restored. If the DIP
switches have changed, the Electronic Bypass Option activates the Stop/Reset
function.
2. Press the Enable key on the Electronic Bypass Option keypad to place the unit
in VFD mode.
3. Perform SED2 commissioning per the SED2 VFD Startup, Operation, and
Maintenance Manual (125-3201). If using the Quick Commissioning mode, end
this mode with P3900 = 3 to run a motor calculation without resetting the SED2 to
factory defaults.
4. After basic SED2 operation is established and verified, turn SED2 power off via
the Electronic Bypass Option input power device and verify that no dangerous
voltages are present in the enclosure.
5. Select Electronic Bypass Option application features using the DIP switches.
DIP Switch Settings for E-Bypass Features.
Switch
Position
Description
1 Essential Services selector switch.
2 Automatic Bypass selector switch; requires SED2 programming.
3 Interlock selector switch; requires SED2 programming.
4 Factory test #1 selector switch. Not used; leave this switch OFF.
5 Factory test #2 selector switch. Not used; leave this switch OFF.
NOTE: When the switch is ON, the feature is enabled; when the switch is
OFF, the feature is disabled. For details on the Electronic Bypass
Option features, see the Application Feature Setup section in this
manual.
6. Re-apply power to the Electronic Bypass Option. On units with three contactors,
energize the SED2 by pressing the Input pushbutton on the Electronic Bypass
Option keypad.
7. Program the SED2 per the Application Feature Setup section in this manual.
8. Test all SED2 and bypass features.