Setup guide

MN03902004E 9 November 2006
Initial Configuration
For proper operation of the S811, these settings must be
set prior to use:
1. It is suggested that the S811 Soft Starter be
configured before applying the line voltage. Apply
24V DC to the (+) and (-) connections of the S811
terminal block. “Eaton Cutler-Hammer” will be
displayed by the DIM while the S811 is powering up.
When power-up is complete the DIM should display
“3 ø Line Currents”.
Note: If anything else is displayed, go to Chapter 8 of
the S811 User Manual, Troubleshooting, for information
on getting the S811 back to a known state.
2. Using the DIM, review the parameter settings in the
“Soft Start Confg”, “Overload Config” and
“Protection Setup” menus. The following setup
procedures will use the factory default settings unless
changed by you.
Note: Refer to the Menu structure shown on Pages 10 – 13
for the location and more information on the parameters
referenced in this setup.
3. In the Overload Config menu set the Overld Trip FLA
parameter to the motor’s nameplate rated current. This
setting assumes the motor has a 1.15 Service Factor.
4. Set Ovrld Trip Class parameter for the desired
overload trip characteristic (curve).
5. In the Protection Setup menu set the Motor Rated Volt
parameter to the motor’s operating voltage.
6. If auto fault reset is required, set the Reset Mode
parameter in the Soft Start Confg menu to Auto (and
Start Control to Level (default)). Note: Auto Reset is
intended for unattended installations where there is
no danger to personnel or other equipment when the
motor starts without warning. If Auto Reset is
enabled, CAUTION must be exercised to assure that
any restart occurs in a safe manner.
7. Apply the Mains voltage and verify that no fault is
present. If a fault is indicated, display the Diaignostic
menu’s Device Status parameter to determine the
source of the fault. Each fault is described in the S811
User Manual, Chapter 8, Troubleshooting.
• A Phase Reversal Fault commonly occurs on
new installations. It can be remedied by either
changing the Phase Sequence parameter from
ABC to ACB in the Protection Setup menu or
removing Mains power and switching the
incoming line connections at L1 and L2 of the
S811.
8. Using the DIM, Jog the motor just enough to verify
that the direction of rotation is correct. If it is not,
remove all power to the S811 and the motor and swap
two of the motor’s winding connections.
9. The S811 should now function properly for most
applications. Adjust other parameters to meet your
application needs. If satisfactory results are not
obtained, see next section for more detailed setup.
Advanced Setup
If Stall faults occur or satisfactory operation is not
achieved with the quick setup in the previous section, the
problem is most likely related to the torque or time
settings. The following procedures using the Soft Start
Confg menu are suggested as alternatives.
Voltage Ramp Start Configuration
1. Initial parameter settings:
• Start Method = Voltage Ramp
• Initial Torque = 50%
• Soft Start Time = 60 sec
• Kick Start Torq = 0% (fans and pumps), 75% (high
breakaway loads)
• Kick Start Time = 0 sec (fans and pumps), 1 sec
(high breakaway loads)
• Soft Stop Time = 60 sec
2. Start the motor and determine the worst case starting
conditions. Adjust Initial Torque for smooth start
without hesitation. Rotation should begin within 2
seconds.
3. If Stall Faults occur at the end of the ramp time,
increase Initial Torque, Kick Start Torq & Time and/or
Soft Start Time to get into bypass before the Soft Start
Time elapses. Also, verify that the motor is not
overloaded.
4. Adjust the Soft Stop Time for the desired stopping
time.
Current Limit Start Configuration
1. Initial settings:
• Start Method = Current Limit
• Initial Torque = 50%
• Soft Start Time = 120 sec
• Kick Start Torq = 0%
• Kick Start Time = 0 sec (disabled)
• Soft Stop Time = 60 sec
2. Start the motor and determine the worst case starting
conditions. Adjust Initial Torque for smooth start
without hesitation. Rotation should begin within 2
seconds and the motor should smoothly accelerate to
full speed.
3. If Stall Faults occur, increase Initial Torque and/or Soft
Start Time to get into bypass before the Soft Start
Time elapses. Also, verify that the motor is not
overloaded.
4. After suitable performance has been achieved,
determine the starting time to bypass and set Soft
Start Time at 1.25 times this time. For example, if it
takes 10 seconds to accelerate the motor and go into
bypass, set the Soft Start Time for 12.5 seconds.
5. Adjust the Soft Stop Time for the desired stopping
time.
MN03902004E.fm Page 9 Tuesday, November 28, 2006 8:49 AM