Mitsubishi Electric A800 Plus Series Function Manual page 178

Winding/unwinding length detection (Pr.1264, Pr.1346, Y234 signal)
• When the material winding (unwinding) length is equal to or more than the length determined by the settings of Pr.1264
Winding length detection (lower 4 digits) and Pr.1346 Winding length detection (upper 4 digits), the Winding/
unwinding completion (Y234) signal turns ON. Use Pr.1262 Winding length increment to set the winding length
increment.
• For the Y234 signal, set "234 (positive logic) or 334 (negative logic)" in one of Pr.190 to Pr.196 (output terminal function
selection) to assign the function to the output terminal.
Winding diameter / winding length storage selection (Pr.645)
• Use Pr.645 Winding diameter storage selection to select the timing to update the values of winding diameter (Pr.646)
and winding length (Pr.1263 and Pr.1298).
Pr.645 Winding diameter storage timing
setting (Pr.646 update timing)
• When a value is set in Pr.646
0 • When the Stored winding diameter clear (X109) signal is
turned ON
In addition to the above-mentioned update timings defined for the setting value of "0", the stored values are also updated at the
following timings.
• When the enabled winding diameter calculation is disabled.
1 • When the power is turned OFF while the winding diameter calculation is valid (when the power is supplied through the main
circuit terminal (Pr.30 = "0, 1, 20, 21, 100, 101, 120, or 121"))
• When the X11 signal is turned ON while the winding diameter calculation is valid (when the power is supplied through terminals
P/+ and N/- (Pr.30 = "2, 10, 11, 102, 110, or 111"))
∗1 If the power supply is disconnected, the winding diameter may not be stored. To make sure that the winding diameter is stored, turn OFF the
X114 signal to store the diameter before turning OFF the power.
∗2 When the FR-HC2/FR-CV is used, the winding diameter is stored using the X11 signal. To make sure that the winding diameter is stored, use
the X11 signal.
NOTE
• The winding diameter is kept independently of Pr.645 setting when start commands (STF, STR) are OFF.
• The winding diameter calculation is used or not used depending on the status of the Tension control selection (X114) signal,
Pr.1247 Winding diameter change increment amount limit setting, and a prioritized operation such as JOG operation.
Stored winding diameter (Pr.646, Pr.647)
• Read Pr.646 Stored winding diameter to check the winding diameter presently stored.
• The stored winding diameter can be changed by overwriting the setting value in Pr.646 with a desired value.
• The present winding diameter is kept for the duration set in Pr.647 Operation time with stored winding diameter after the
start command is given.
Initial winding diameter
calculation
With initial winding diameter
calculation
Without initial winding
diameter calculation
∗2
The present winding diameter is kept for the duration set in Pr.647 after the start command is given and
initial winding diameter calculation starts.
However, when initial winding diameter calculation is completed before the Pr.647 setting time elapsed, the
result of the calculation is used.
The present winding diameter is kept for the duration set in Pr.647 after the start command is given and the
winding diameter calculation starts.
WINDING DIAMETER COMPENSATION FUNCTION
Winding diameter calculation setting
Winding length storage timing
(update timing for Pr.1263 or Pr.1298)
• When a value is set in Pr.1263 or Pr.1298.
• When the Winding length clear (X117) signal is turned ON
∗1
Operation at start
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