motortronics VMX Series - Fault Mode and Codes; Fault Mode Operation; Common Fault Codes

Basic Installation and Operation Guide
VMX Series Digital Solid State Soft Starters 18 – 1250A
VMX Quick Setup Guide 28 | P a g e
Fault Mode
The VMX Series will automatically enter the Fault Mode when a fault occurs in the motor or starter and
display a code indicating the condition that caused a shutdown. Fault codes are three-digits in length and are
displayed in alpha characters. The first and second characters (reading left to right) are the initials for the
applicable English-language fault name. The third or right-most character can be either A, c, or d to denote
when the fault occurred. “A” denotes Acceleration. “c” denotes Constant speed. “d” denotes Decel or
Stopped.
A Fault History of the past 3 events is stored and can be accessed by using the Up or Down Arrow keys
before pressing the Reset button. The first (newest) event is indicated by the decimal point in the lower right
corner. A more detailed history with time and date stamps is also kept in Functions 85 through 93.
Fault Codes:
Basic common fault codes are shown in the chart below. For additional details refer to Chapter 7 of the
Advanced Installation, Operation and Programming Manual, or contact the factory for assistance.
Fault Condition Description
Fault Display Code
Readout
Fault Number Code
used in History,
F085, F088 and
F091
LED
Indicator
Over Current during Accel; Const spd; Decel
ocA; occ: ocd
1; 2; 3
Over Current
Phase Loss during Accel; Const spd; Decel
PLA; PLc; PLd
4; 5; 6
Phase Loss
Over Temperature during Accel; Const spd; Decel
otA; otc; otd
7; 8; 9
Over Temp
Over Load during Accel; Const spd; Decel
oLA; oLc; oLd
10; 11; 12
Over Load
Shorted SCR during Accel; Const spd; Decel
SSA; SSc; SSd
13; 14; 15
Shorted SCR
Shunt Trip during Accel; Const spd; Decel
st
16; 17; 18
Shunt Trip
Current Imbalance during Accel; Const spd; Decel
IbA; Ibc; Ibd
19; 20; 21
---
Under Current during Accel; Const spd; Decel
UcA; Ucc; Ucd
22; 23; 24
---
Short Circuit during Accel; Const spd; Decel
ScA; Scc; Scd
25; 26; 27
Over Current
Ground Fault during Accel; Const spd; Decel
GFA; GFc; GFd
28; 29; 30
---
Bypass Discrepancy during Accel; Const spd; Decel
bPA; bPc; bPd
31; 32; 33
---
PTC Trip during Accel; Const spd; Decel
PtA; Ptc; Ptd
34; 35; 36
Over Load
Rotation Trip during Accel; Const spd; Decel
rtA; rtc; rtd
37; 38; 39
---
Additional codes that may be displayed
Display Code
Readout
Condition Description
nFLA
No Full Load Amps set in F001
Inh
Inhibit: Starter is still in Run mode when you are attempting a change in programming, or the
starter has Password Protection enabled and you have not entered the password code.
n3Ph
No 3 Phase: No input line voltages on any phase.
Loc
Lockout: The unit has tripped on Overload and you are attempting to Reset before it is ready,
or one of the Duty Cycle Lockout protection features has been enabled.
Err
Error: You are attempting to enter an invalid password
Table 8: Fault and Display code list