VMX
2
Series Digital Solid State Soft Starter User Manual
66 |
P a g e
6.2
Start-up Check List
▪
Supply voltage matches the rated supply voltage of the unit.
▪
Horsepower and current ratings of the motor and starter have the
same rating, or the starter has a higher rating.
▪
Initial ramp time and torque adjustments have been checked.
▪
Input voltage source is connected to the starters input terminals L1,
L2 and L3.
▪
Motor leads are connected to the starter output terminals T1, T2,
and T3.
▪
Appropriate control power is applied and/or control connections
have been made.
▪
“Power On” light located on the front of the unit turns on when
control power is applied.
▪
Four 7-segment LED readout is visible.
▪
The motor’s FLA has been programmed in function F001.
▪
The thermal overload is properly set. (Use F003 and F004 to set OL
Class.)
▪
The motor area and equipment are clear of personnel and parts
before start-up.
6.3
Sequence of Operation
▪
Apply three-phase power to the unit. The motor should not run until
the start command is applied.
▪
Apply control power and check that the “Power On” LED comes on.
▪
Status Display should read
[0000.]
showing no current in Phase A
(minor flickering of the first digit is common).
▪
Apply the Run (Start) command. The motor should begin to
accelerate. Status display will read Phase A Amps at an increasing
rate.
▪
When the motor reaches full speed, the “At Speed” LED comes on.
Status display should show a sharp decrease in Phase-A amps.
▪
The Bypass Contactor should pull in.
▪
If the motor does not fully accelerate, decelerates, or stops during
the acceleration period, push the Stop button immediately and open
the disconnect line.
If Pump-Flex Decel is programmed in F025:
▪
Remove the Run Command (or push the Stop button). At-Speed
LED will go out.
▪
The Bypass Contactor should drop out.
▪
Status display should read Phase-A amps increasing as motor
begins to decelerate.
▪
Motor should begin to slow down. Status display should begin to
show decreasing motor amps.
▪
When motor reaches Stop Level, starter should turn off. Status
display will again show
[0000.]
If the unit does not follow this operational sequence, please refer to the
Service and Troubleshooting Guide section.
