motortronics VMX Series - Page 26

Basic Installation and Operation Guide
VMX Series Digital Solid State Soft Starters 18 – 1250A
VMX Quick Setup Guide 26 | P a g e
Function 51 Internal protection features
Several protection features in the VMX Series are accomplished with internal hardware and use
software switches in Function 51 to enable or disable them. The following chart shows these functions
and the factory default settings. Refer to the Advanced Installation, Operation and Programming
Manual, Section 5.6.8.a for details on how to change these settings.
Protection
Function
Descriptio
n
Default
Setting
Phase Rotation
Trip
Phase Rotation protection.
Phase rotation must match selection in Bit #2 below. Setting to Off (0) will make the VMX
insensitive for use behind a reversing contactor
Off
Expected Phase
Sequence
2 = A-B-C Phase Rotation Sequence Only
0 = A-C-B Phase Rotation Sequence Only
A-B-C
Rotation
Phase Current
Loss
Phase Current Loss, any phase current reading is less than 8 - 20% (Depending on frame
size) of unit max amp rating after 3 seconds from Start command.
On
Shorted SCR
Lockout
At least one SCR has shorted; there is no voltage drop across the SCR phase assembly.
On
Shunt Trip
Shunt Trip of the main Circuit Breaker or Isolation Contactor (if provided and wired to an Aux.
relay in F060-F061)). 2 or more SCRs have shorted in opposing phases so current was
flowing to the motor while the VMX was in the Off state.
On
PTC Input Trip
PTC Trip function. This can be disabled so that a jumper is not required across the PTC inputs.
On
Line Loss Trip
Protection against loss of input line voltage. Disable when using an In-Line Isolation
Contactor or any other system that normally removes line power from the starter. Resets
automatically when line voltage returns.
On
Table 6: Function 51 table of Hardware Protection Features
Fn #
Group
Function Description
Adjustment / Display Range
Setting
Increments
Factory
Setting
Setting
F085
Fault History and Run Data
Fault History #1, Latest Fault
0 = No fault history, or
Fault # 1 - 27: see Fault code list
1
0
F086
Time Stamp, Fault #1
Based on F078-80
00.00-23.59 (hh.mm)
[hh = 00-23; mm = 00-59]
00.01
00.00
F087
Date Stamp, Fault #1
Based on F076-77
01.01 – 12.31 (MM.DD)
[MM = 01-12; DD = 01-31]
00.01
01.01
F088
Fault History #2, Previous
Fault
0 = No fault history, or
Fault # 1 - 27: see Fault code list
1
0
F089
Time Stamp, Fault #2
00.00-23.59 (hh.mm)
[hh = 00-23; mm = 00-59]
00.01
00.00
F090
Date Stamp, Fault #2
01.01 – 12.31 (MM.DD)
[MM = 01-12; DD = 01-31]
00.01
01.01
F091
Fault History #3, Oldest Fault
0 = No fault history, or
Fault # 1 - 27: see Fault code list
1
0
F092
Time Stamp, Fault #3
00.00-23.59 (hh.mm)
[hh = 00-23; mm = 00-59]
00.01
00.00
F093
Date Stamp, Fault #3
01.01 – 12.31 (MM.DD)
[MM = 01-12; DD = 01-31]
00.01
01.01
F094
Run Time, Hours
000.0 – 999.9 hours
0.1 hours
0
F095
Run Time,
1000 Hour Overflow
0000 – 9999 thousand hours
1 k-hour
0
F096
Run Cycle Counter
0000 – 9999 times
1 times
0
F097
Run Cycle Counter
10K overflow
0000 – 9999 10 thousand times
1 10k times
0