Mitsubishi Electric FR-A800 Series Instruction Manual page 325

 Cumulative pulse monitoring
• When the Vector control compatible plug-in option or the control terminal option (FR-A8TP) is used, the accumulated value
of the encoder pulses can be monitored.
• The cumulative pulse monitor is available when "71 to 74" is set in the monitor selection parameters (Pr.52, Pr.774, Pr.775,
Pr.776, and Pr.992).
Monitor item
Cumulative pulse
Cumulative pulse
overflow times
Cumulative pulse
(control terminal option)
Cumulative pulse
overflow times (control
terminal option)
*1 Negative values are not displayed on the operation panel. The values "-1 to -32767" are displayed as "65535 to 32769" on the operation panel.
 Cumulative pulse division scaling factor (Pr.636, Pr.637)
• Set the division scaling factor on the cumulative pulse in Pr.636 or Pr.637.
• Cumulative pulse count value calculation method
Cumulative pulse count value = Cumulative pulse division scaling factor × (Cumulative pulse overflow times × 32768 +
Cumulative pulse monitor value)
Cumulative pulse count value: Number of pulses multiplied by 4
Cumulative pulse division scaling factor: Pr.636, Pr.637
 Cumulative pulse monitor value clear (Pr.635)
• The cumulative pulse monitor and the cumulative pulse overflow times can be cleared by X52 signal or X53 signal.
• To input the X52 or X53 signal, set "52 (X52)" or "53 (X53)" in any of Pr.178 to Pr.189 (Input terminal function selection)
to assign the function to a terminal.
• Use Pr.635 Cumulative pulse division scaling factor to select the clearance method for the cumulative pulse monitor
and the cumulative pulse overflow times.
Pr.635 setting
0 Cleared at the edge when the signal is switched to ON.
1 Cleared while the signal is ON.
2 Cleared at the edge when the signal is switched to ON.
3 Cleared while the signal is ON.
Cumulative pulse
Cumulative pulse
overflow times
 Cumulative pulse storage
• The cumulative pulse monitor value and cumulative pulse overflow times can be retained when the power is turned OFF
or the inverter is reset.
Cumulative pulse monitor / Cumulative pulse overflow
Pr.638
setting
At power-OFF
0 Not stored in the EEPROM
1 Stored in the EEPROM
2 Not stored in the EEPROM
3 Stored in the EEPROM
324
5. PARAMETERS
5.5 Position control under vector control and PM sensorless vector control
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Pr.52, Pr.774 to Display with
Pr.776, Pr.992 minus sign
*1
71
○
*1
72
○
*1
73
○
*1
74
○
X52 signal
Cumulative pulse monitor value clear
Clear signal
(X52, X53)
Cleared at the ON edge
times
Cleared
Retained
Cleared
Retained
search engine
The cumulative number of pulses is displayed (for Vector control compatible
plug-in option). (Monitoring range: -32767 to 32767)
The number of the cumulative pulses carrying overflow times is displayed (for
Vector control compatible plug-in option).
The cumulative number of pulses is displayed (for the FR-A8TP). (Monitoring
range: -32767 to 32767)
The number of the cumulative pulse overflow times is displayed (for FR-A8TP).
Cumulative pulse monitor clear (control terminal option)
Cleared at the edge when the signal is switched to ON.
Cleared at the edge when the signal is switched to ON.
Cleared while the signal is ON.
Cleared while the signal is ON.
Cumulative pulse
Cumulative pulse
overflow times
Clear signal
ON
(X52, X53)
Cumulative pulse monitor / Cumulative pulse overflow
At reset At power-OFF
Not stored in the EEPROM
Not stored in the EEPROM
Stored in the EEPROM
Stored in the EEPROM
Description
X53 signal
ON
Cleared while the signal is ON
times (Control terminal option)
At reset
Cleared
Cleared
Retained
Retained