Emerson Mentor MP Advanced User's Manual page 55

Parameter Keypad and
structure display
Tachometer input mode
3.53
Bit SP
Coding
Range 0 to 2
Default 0 (DC)
Update rate Background read
The input electronics for the tachometer input can be configured in 3 ways.
Value Text
0 DC
1 DC Filt
2 AC
Encoder direction
3.54
Bit SP
Coding
1
Default 0
Update rate Background read
If the encoder has been incorrectly wired this bit can be used to correct the encoder feedback.
0 - Clockwise
1 - Anti clockwise
Select estimated speed on feedback loss
3.55
Bit SP
Coding
1
Default 0
Update rate Background read
When this bit is set the speed feedback source is automatically changed to estimated speed feedback when the selected speed feedback is lost.
Speed feedback loss window
3.56
Bit SP
Coding
Range 0 to 100%
Default 10.0%
Update rate Background read
When Pr 3.55 is set to a 1 Pr 3.56 defines the window over which the software will automatically select the estimated feedback.
Window = 03.56% * Base speed (Pr 5.06 or Pr 21.06)
If | Selected feedback - estimate feedback | > Window then
If Selected feedback sign different to estimate feedback sign then
Feedback polarity error
End if
If Pr 3.55 is 1 then
Pr 3.57 = 1
Pr 3.26 = 5
Else
Feedback loss error
End if
End if
Mentor MP Advanced User Guide
Issue Number: 1
Parameter description
Parameter x.00
format
FI DE Txt VM DP ND
1
Action
DC tachometer
DC tachometer with input filter
AC tachometer
FI DE Txt VM DP ND
FI DE Txt VM DP ND
FI DE Txt VM DP ND
1
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Advanced parameter
descriptions
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
Serial comms
Performance
protocol
PS
PS
PS
PS
1
Menu 3
55