Emerson Mentor MP Advanced User's Manual page 51

Parameter Keypad and
structure display
Drive encoder lines per revolution
3.34
Bit SP
Coding
Range 1 to 50,000
Default 1,024
Update rate Background read (Only has any effect when the drive is disabled)
When Ab, Fd, Fr are used the equivalent number of encoder lines per revolution must be set-up correctly in Pr 3.34 to give the correct speed and
position feedback. This is particularly important if the encoder is selected for speed feedback with Pr 3.26. The equivalent number of encoder lines
per revolution (ELPR) is defined as follows.:
Position feedback device
Ab
Fd, Fr
The incremental (A/B) signal frequency should not exceed 500kHz. If Pr 3.34 is changed the encoder is re-initialized.
Drive encoder marker mode
3.35
Bit SP
Coding
Range 0 to 1
Default 0
Update rate Background read (Only has any effect when the drive is disabled)
Pr 3.35 defines the marker mode. If this parameter is zero the marker system operates in a conventional manner, but if this parameter is non-zero the
marker causes a full position reset.
Drive encoder supply voltage
3.36
Bit SP
Coding
Range 0 to 3
Default 0
Update rate Background read
The encoder supply voltage present on the drive encoder connector is defined by this parameter as 0 (5V), 1 (8V), 2 (15V) or 3 (24V)
Drive encoder type
3.38
Bit SP
Coding
Range 0 to 2
Default 0
Update rate Background read (Only has any effect when the drive is disabled)
The following encoders can be connected to the drive encoder port.
0, Ab: Quadrature incremental encoder, with or without marker pulse
1, Fd: Incremental encoder with frequency and direction outputs, with or without marker pulse
2, Fr: Incremental encoder with forward and reverse outputs, with or without marker pulse
Mentor MP Advanced User Guide
Issue Number: 1
Parameter description
Parameter x.00
format
FI DE Txt VM DP ND
ELPR
number of lines per revolution
number of lines per revolution / 2
FI DE Txt VM DP ND
FI DE Txt VM DP ND
1
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
1
PS
1
PS
1
PS
1
Menu 3
51