VMX
2
Series Digital Solid State Soft Starter User Manual
67 |
P a g e
6.4
Testing with a smaller motor
▪
To test the
VMX2 Series
starter in combination with a motor that
draws less than Less than 20%
of the FLA setting in F001
, the
Phase Current Loss (Running) protection must be disabled as per
instructions in section 5.6.14 (F101). If this feature is not disabled,
the
VMX2 Series
will trip on a Phase Loss fault after running for 3
seconds at low current levels.
Chapter 7 - Fault Conditions
7.1
Fault Codes and Numbers (in History)
A two or three character fault code is displayed in the LED display at the
time of the trip event. For three character codes, the first two characters
indicate the trip condition (see Table 7.1). The third digit is a suffix
showing the
VMX2 Series
operating mode when the trip occurred.
Operating modes are as follows:
Code suffix “A”:
Acceleration, meaning that the
VMX2 Series
was
ramping up, but had no
t yet achieved “At-Speed” status (see table 5.2
for a brief description of At-Speed indication).
Code suffix “c”:
Constant Speed (running), meaning that the
VMX2
Series
has reached the At-Speed condition and the motor was running
when the trip occurred.
Code suffix “d”:
Decel or Stop, meaning the
VMX2 Series
was either
stopped (off, but power applied), or if the Pump-Flex Decel function was
enabled, it was engaged in the Soft Stop routine set up by F024-27.
IMPORTANT NOTE:
Fault code SSd may display if there is no output load (motor)
connection when control power is applied!
In addition to these fault display codes, each trip condition has a
corresponding numeric code that is stored in the Fault History. The
numeric codes follow the display codes exactly. Table 7.1 shows the
Fault Display Codes, Fault Number Codes, and LED indicators for each
fault condition. Additional details are available in the Service and
Troubleshooting Guide.
Example:
If Function F003 (starting overload protection) is set too low
for the size of the load and causes a trip, the fault
code “oLA” will be
displayed. Its corresponding number will be entered into the fault
history. In this case, the number 0010 will be shown on the display in
function F085 (Fault History). The time the fault occurred is available in
function F086
shown as “hh.mm.” Example: if the “oLA” fault occurred at
10:00 am, F086 would display
“10.00.” The date the fault occurred is
available, in function F087. The date is shown as
“mm.dd”. If the “oLA”
fault occurred on March 1, F077 shows
“03.01.” If no fault history is
available, F085 reads 0000.
