Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 27)

Startup Procedures
Siemens Building Technologies, Inc. 19
Startup Procedures
Safety Precautions
WARNING:
When you connect input power to the Electronic Bypass Option, the motor terminals
are energized even if the motor is not running. Do not make any connections with
input power connected to the Electronic Bypass Option. Disconnect and lock out
power to the drive before servicing it. Failure to disconnect input power may cause
serious injury or death.
CAUTION:
After you disconnect input power, the DC bus capacitors must be allowed to
discharge to a safe voltage. This will take about 5 minutes.
Installation Inspection
Inspect the mechanical and electrical installation for compliance with local electrical
codes and regulations. After installation, verify that:
• Electronic Bypass Option and motor are properly grounded.
• Input power and motor wire sizes are correct and connections are secure.
• Control wiring is correct, connections are secure, and wire shield is properly
grounded.
• Control wiring is not routed with power wiring.
• Electronic Bypass Option has proper ventilation.
• Internal Bypass connections are secure.
Power-On
1. Turn on Electronic Bypass Option power.
Power-on initialization performs a basic sanity test (approximately 7 seconds) to
initialize the Controller board. Also, the Stop/Reset indicator will flash.
A unit fault condition occurs if the Electronic Bypass Option did not pass the
basic sanity test. See the Troubleshooting section in this manual for more details.