Clear Signal Selection - Mitsubishi Electric FR-A800 Series Instruction Manual

• The LSP and LSN signals can be input via an external terminal only regardless of the setting in Pr.338 Communication
operation command source or Pr.339 Communication speed command source.
Operation ready completion (RDY)
 Selecting the pulse train type (Pr.428 and NP signal)
• Set Pr.419 Position command source selection = "2" (simple pulse train position command).
• Set "68" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the Simple position pulse train sign (NP)
to the input terminal.
• Select the command pulse train with Pr.428 Command pulse selection.
Pr.428 setting
Negative
0 to 2
logic
Positive
3 to 5
logic
• Select Vector control or PM sensorless vector control to select the position control method.
NOTE
• If Pr.419 = "2" (simple pulse train position command) is set, terminal JOG is used for the simple position pulse train input
regardless of the Pr.291 Pulse train I/O selection pulse train input/output selection setting.
5.5.7

Clear signal selection

Pr.
429
Clear signal selection
B010
• This function is useful to reset the number of droop pulses to 0 when home position return is performed.
• The Simple position droop pulse clear (CLR) signal is valid when the inverter is in the External operation mode. The NET
position pulse clear (CLRN) signal is valid when the inverter is in the Network operation mode (not applicable when the
FR-A8NS is installed).
• If the simple position droop pulse clear (CLR) signal is turned ON when Pr.429 Clear signal selection = "0", the deviation
counter is cleared at the edge of the signal. The CLR/CLRN signal is also turned ON in synchronization with the zero pulse
signal of the encoder such as the home position return signal, and the deviation counter is cleared.
• For a terminal used for the CLR signal, set "69" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign
the function.
320
5. PARAMETERS
5.5 Position control under vector control and PM sensorless vector control
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Forward rotation
Actual rotation
Reverse rotation
Base signal
Servo on (LX)
Forward stroke end (LSP)
Reverse stroke end (LSN)
Inverter pulse train command
Sign signal (NP)
In-position (Y36)
Command pulse train type
Pulse train + rotation
direction sign
Pulse train + rotation
direction sign
Name Initial value
1
search engine
0.1s
During forward rotation
JOG
L
NP
JOG
NP H
Setting
range
The values of the position pulse (command pulse, droop
pulse, current position, and current position 2) are cleared
0
at the rising edge when the clear (CLR/CLRN) signal is
switched from OFF to ON.
The values of the position pulse are cleared while the clear
1
(CLR/CLRN) signal is turned ON.
During reverse rotation
H
L
Description