Programming Your Application 1-83
690+ Series Frequency Inverter
POSITION
The Position function block counts the
encoder position from reset.
It provides a scaleable output as well as
encoder speed diagnostics
If the ENCODER MODE is set to
QUADRATURE (refer to the FEEDBACKS
function block), then the output will count at
4x the number of lines on the encoder per
revolution, otherwise it will count at 1x.
MMI Menu Map
1
SETUP
2
MISCELLANEOUS
3
POSITION
RESET
PRESET
LIMIT
COUNTS PER UNIT
OUTPUT (INT)
SCALED OUTPUT
ENCODER FBK RPM
ENCODER FBK %
Position
–
OUTPUT (INT) [748]
–
0
–
SCALED OUTPUT [1685]
–
0.0000
–
ENCODER FBK RPM [1687]
–
0.00 rpm
–
ENCODER FBK % [1688]
–
0.00 %
FALSE
–
[747] RESET
–
0.00
–
[1682] PRESET
–
100.00
–
[1683] LIMIT
–
8192
–
[1684] COUNTS PER UNIT
–
Parameter Descriptions
RESET
Range: FALSE / TRUE
Resets OUTPUT (INT) to zero and SCALED OUTPUT to Preset when set to True.
PRESET
Range: -32767.00 to
32767.00
The value to which the SCALED OUTPUT is set when RESET is True
LIMIT
Range: 0.00 to 32767.00
A symmetric limit that clamps the value of SCALED OUTPUT, i.e. SCALED OUTPUT can
be no greater than LIMIT and no less than -LIMIT
COUNTS PER UNIT
Range: -2147483647 to
2147483647
The number of encoder counts that are equal to a SCALED OUTPUT of 1.0.
OUTPUT (INT)
Range: —.
The number of counts on the encoder since the block was last reset. The output is preserved
during power-down of the Inverter.
SCALED OUTPUT
Range: —.0000
An output scaled such that 1.0 = encoder counts
counts per unit
ENCODER FBK RPM
Range: —.00 rpm
Provides an encoder speed diagnostic in rpm.
ENCODER FBK %
Range: —.00 %
This parameter shows the mechanical speed of the motor shaft, calculated from the Encoder
Technology Box, as a percentage of the user maximum speed setting (MAX SPEED in the
SETPOINT SCALE function block).
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