SED2 Variable Frequency Drives Startup Procedure and Checklist
Document Number 155-718
September 14, 2011
Siemens Industry, Inc. Page 9
HVAC Startup
Procedure for SED2
without Bypass
Option
Review the Preparing for SED2 VFD Startup section in this document.
Use the following HVAC startup procedure for SED2 VFDs without the Bypass Option.
For startup of SED2 VFDs with the Bypass Option, see the HVAC Startup Procedure for
SED2 with Bypass Option section in this document.
Check Step
( ) 1.
Record all other connections to the drive. If applicable, verify that the building automation system
logic is ready to perform adequately for start, stop, and speed command functions.
( ) 2.
Apply power to the drive. Make sure that all three phases are present and that the input voltage is
correct for the system being set up. Verify that the drive display is on.
At this time, if the display indicates a fault, press
to reset it.
( ) 3.
Press
to access Parameter r0000 and to enter the SED2 programming mode. From here, you
can access and change Level 1 parameters using
or .
Press to advance to Parameter P0010. Press to access the parameter values level.
Press
to advance to 1. Press to confirm and save the P0010=1 setting. The Quick
Commissioning procedure starts. See the Quick Commissioning Procedure section in this
document for details.
On completion of the Quick Commissioning procedure, continue with Step 4.
( ) 4.
Press
and
to return to the drive operating mode. Press to place drive in hand mode.
( ) 5.
To start the Drive, press
(green start key). The drive will ramp up to “10 HZ”. Verify that the
direction of motor rotation is correct.
NOTE: If the direction of motor rotation is wrong, turn Power Off! Wait for 5 minutes.
Swap wires on the motor terminals (T1(u), T2(v)) or on the output terminals of the
motor overload relay. Tighten the terminal lugs, reapply power, and recheck the
direction of the motor rotation.
( ) 6.
With correct motor rotation, manually run the drive throughout its entire operating range while
observing operation.
• If the drive trips on over-current during acceleration adjust the acceleration time rate via
Parameter P1120.
• If the drive trips on over-voltage during deceleration, adjust the deceleration time rate via
Parameter P1121.
• If excessive vibration of the driven load is noted at specific input frequencies, use Skip
Frequency Parameters P1091 through P1094 to eliminate this vibration.
( ) 7.
Determine whether the remote speed reference is a 0 to 10 Vdc or a 4 to 20 mA signal. Connect
signal wires and place analog input DIP Switch in the appropriate position.
( ) 8.
Check the signal for proper polarity. Observe if the remote speed command can achieve the
minimum and maximum speeds desired. If not, scale as required.
( ) 9.
To turn on drive, press
and , and then enable by automation setup.
This completes the startup procedure for the SED2 VFD without Bypass Option.
To Next Page
Loading...
Need help?
General