Instruction Manual PSx3xxMod
26
d) upper limit (HR 52/53),
lower limit (HR 54/55),
positioning window (HR 56),
length of loop (HR 57/58)
8) In order to save the settings permanently in the EEPROM, write 1 to HR 116. As
soon as reading of HR 116 shows 0, the saving is finished.
Referencing value (HR 48/49):
The referencing process affects all transferred values, i.e., the target value, actual
value, upper mapping end and upper and lower limit.
There are two ways of setting the referencing value:
1) Directly, by writing the referencing value to HR 48/49.
2) Indirectly, by writing an actual value to HR 2/3. This makes it possible to assign
any “true” actual value to the current, physical actual value. The resulting
difference is then the referencing value. This value will immediately be included in
calculations for each transferred value and can also be read via HR 48/49.
When changing the referencing value, automatically the target value, the actual value,
the upper mapping end and the upper and lower limit are recalculated.
The removal of the
motor
power supply has no affect on the internal
measuring system.
d) Using actual value assessment factors to set the spindle pitch
HR 45 (numerator factor) and HR 46 (denominator factor) can be used to represent
any desired spindle pitch.
Both factors are set to a value of 400 by default, resulting in a resolution of 0.01 mm
at a spindle pitch of 4 mm.
The denominator factor serves as a simple means of setting the spindle pitch and
resolution.
The numerator factor is primarily used for setting "unlevel" resolutions.
Examples:
Spindle pitch
Resolution
Numerator
factor
Denominator
factor
4 mm
1/100 mm
400
400
1 mm
1/100 mm
400
100
2 mm
1/10 mm
400
20
Numerator and denominator factors may take on values between 1 and 10,000.
e) Drag error
During a positioning run, the device compares the computed target position with the
current actual value. If the
difference is larger than the ‘drag error’ value (HR 59), the
device sets the corresponding bit in the status word. This situation is especially likely
to occur if external factors (required torque, voltage to motor too low) prevent the
device from achieving the target rpm.
Содержание PS*3**Mod series
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