Emerson Mentor MP Advanced User's Manual page 161

Parameter Keypad and
structure display
13.11 Absolute mode enable
Bit SP
Coding
1
Default 0
Update rate Background read
When this parameter is set to one and the position controller mode (Pr 13.10) is 1 or 2, the position error integrator is loaded with the absolute
position error defined by the position sources when the position controller is disabled. (The position controller is disabled under the following
conditions: when the drive is in the inhibit, ready or tripped states; either the reference or feedback position sources from Solutions Modules are
invalid; the position feedback is not correctly initialised (Pr 3.48 = 0); the position control mode (Pr 13.10) is changed; this parameter (Pr 13.11) is
changed; or the position error reset (Pr 13.16) is set to one.) Therefore when this parameter is one the position controller operates on the absolute
position from the reference and feedback. If the feedback device is not absolute then the absolute position is the change of position since the drive
was powered-up.
When this parameter is zero or the position control mode is not 1 or 2 the error integrator is loaded with zero when the position controller is disabled
therefore the position controller operates on the relative position changes of the reference and feedback from the point when the position controller is
re-enabled.
It should be noted that the value of this parameter does not affect the operation of the marker reset for any position source. If the marker position reset
disable (Pr 3.31 for the drive encoder, or similar for Solutions Modules) is zero, the position controller takes the position source including the effect of
the marker. When a marker event occurs the position and fine position are reset to zero, but the turns are not affected. If the marker position reset
disable is one then the marker events have no effect on the position source used by the position controller.
13.12 Position controller speed clamp
Bit SP
Coding
Range 0 to 250 rpm
Default 150
Update rate Background read
This parameter limits the velocity correction applied by the position controller. This value is also used as the reference during orientation.
13.13 Orientation position reference
Bit SP
Coding
Range 0 to 65,535
Default 0
Update rate Background read
13.14 Orientation acceptance window
Bit SP
Coding
Range 0 to 4,096
Default 256
Update rate Background read
13.15 Orientation position complete
Bit SP
Coding
1
Update rate 4ms write
Pr 13.13 defines the position as a 1/2
16
reference for orientation in 1/2
complete.
Mentor MP Advanced User Guide
Issue Number: 1
Parameter description
Parameter x.00
format
FI DE Txt VM DP ND
FI DE Txt VM DP ND
FI DE Txt VM DP ND
FI DE Txt VM DP ND
FI DE Txt VM DP ND
1
16
of a revolution for orientation. Pr 13.14 defines the position acceptance window either side of the position
of a revolution. When the position is within the window defined by Pr 13.14, Pr 13.15 indicates orientation is
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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
RA NC NV PT US RW BU
1 1
Serial comms
Performance
protocol
PS
PS
1
PS
1
PS
1
PS
Menu 13
161