3-38
Origin Compensation and Origin Shift
• Both origin compensation and origin shift functions match the mechanical origin and the Cam Posi-
tioner origin.
• The differences between origin compensation and origin shift are outlined as follows:
Origin Compensation
Press the ADJ switch in SET mode to set the present angle at that point to zero. If an origin com-
pensation value has been set, the present angle will change to that origin compensation value. This
value (the origin position after compensation for the Resolver’s electrical 0°) will not be lost even if
the power is turned OFF.
Origin Shift
Turn ON the origin shift input (TRIG) in RUN mode to set the present angle at that point to zero. If an
origin compensation value has been set, the present angle will change to that origin compensation
value. This value will be lost if the power is turned OFF.
• Origin compensation is used to align the mechanical origin and the Cam Positioner origin, for exam-
ple, when the system is first introduced, when the system is adjusted, or when Resolvers or Cam Posi-
tioners are exchanged.
Origin shift is used during normal operation when the present angle (origin) is to be changed.
• Both origin compensation and origin shift functions are enabled when the Resolver speed is less than
4 r/min. Neither function will be executed when the Resolver speed is 4 r/min or greater.
• The absolute angle will be flashing in the POSITION/OFF display during execution of origin com-
pensation or origin shift.
Note When origin compensation values have been set, turn OFF the power supply to the Cam Position-
er, turn it ON again and then execute origin compensation or origin shift. The origin compensation
value is enabled once the power has been turned ON again. If origin compensation or origin shift
are executed without the power being turned OFF and then ON again, the origin compensation or
origin shift function will not be executed properly.
3-5-6 Start Operation (RUN Mode)
Once origin compensation has been executed, check the operation of the machinery.
D Procedure
Operation Display Explanation
Use the mode selection switch to change to RUN mode.
Bank No. specified at bank selection
input (BANK1 to 3)
Blank when operation start input signal
(START) is OFF.
Present angle
Resolver speed (r/min)
Operation Chapter 3
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