Basic Installation and Operation Guide VMX Series Digital Solid State Soft Starters 18 – 1000A
Page 17 of 27
Chapter 4 - Programming
It is best to operate the motor at its full load starting conditions to achieve the proper time, torque and ramp
settings. Initial factory settings are set to accommodate general motor applications and provide basic motor
protection. Advanced features must be enabled via programming. The only parameter that MUST be set by the
user is motor FLA (F001).
Digital Interface
The
VMX Series
Soft Starter includes an intuitive, digital keypad with eight LEDs, seven command keys, and an
LED display with four alphanumeric digits.
Figure 13: VMX Operator Interface
Reset
Clears the Trip indication and releases the Trip Relay.
Fn
Enters or exits the Program Mode.
Up and
Down
Arrows
Navigates through the Status Display Mode, scrolls up
and down through the Function List, increases or
decreases the value of the active (flashing) digit and
scrolls through the fault history. When entering values,
holding the key down for more than 2 seconds will
activate Auto-step, which increases it’s rate the longer
the key is held down.
Keys
Right
and Left
Arrows
Each keypress shifts the active (flashing) digit to the
right or left by one position, allowing you to change
higher values of functions without waiting to Auto-step
though large numbers.
Power
On
Control power is available at A1 and A2
Green
LEDs
At
Speed
The motor is at full power and the Bypass Contactor
has been commanded to pull in.
The SCRs are at full conduction and current has
dropped.
Shunt
Trip
Two or more SCRs in opposing phases have shorted,
and power is flowing to the motor in the Off mode. See
section 8 for additional concerns.
Shorted
SCR
There is no voltage drop across at least one SCR
phase assembly, indicating that at least one SCR is
shorted. See section 8 for additional concerns
Over
Current
Overcurrent LED lights for three sets of fault conditions:
1)
During start, the unit saw current exceed the
normal rate of increase in the first 250ms.
2)
During Run, current exceeded either the OC
setting in F042 for the delay set in F043. This
LED will be accompanied by oCA, oCC or
oCd on the display.
3)
The unit has seen a Short Circuit exceeding
10x FLA for 12.5ms. This LED will be
accompanied by SCA, SCC or SCD display.
Phase
Loss
One or more of the phase currents dropped below the
threshold during starting or running.
Over
Temp
Starter has tripped due to excess heat sink
temperature. This will automatically reset.
Yellow
LEDs
Over
Load
Starter has tripped due to the Thermal Register
reaching 0000. The Overload must reset before this
fault can be cleared.
Display
8888.
4 digit 7 segment display with a decimal point on the
right side indicating Phase A.
Table 5: VMX Series Display Features
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