Hitachi SJ700-2 instruction manual Forward/reverse drive stop function FOT/ROT, Teaching function

Related code

C001-C008 intelligent input terminals P012: Control pulse setting

P013: Home search stop position setting

Related code

P072: Position range specification (forward)

P073: Position range specification (reverse)

Chapter 4 Explanation of Functions

4.3.17 Forward/reverse drive stop function (FOT/ROT)		Related code
	C001-C008 intelligent input terminals

-The forward/reverse drive stop function allows you to prevent motor operation from deviating from the specified control range according to signals from the control range limit switches.

-When the FOT terminal is turned on, the torque for forward rotation is limited to 10%. When the ROT terminal is turned on, the torque for reverse rotation is limited to 10%. This function can be used as a limit switch function at the machine end. This function is activated by setting 71 (FOT) and 72 (ROT) on intelligent input terminals 1-8 (C001- C008

4.3.18 Position range specification function

- The position control ranges for forward and reverse rotations can be specified by the position range specification (forward) (P072) and

position range specification (reverse) (P073), respectively. If the value of the current position counter exceeds one of these ranges, a position control range error (E63.* or E73.*) causes the inverter to trip and enter free-running status.

-The values specified by P072 and P073 limit the maximum values of multistage position settings 0 to 7 (P060 to P067).

(Position settings cannot exceed the specified position ranges.)

4.3.19 Teaching function

- The teaching function allows you to make the inverter run and stop the motor arbitrarily, and then store position data as a position command in an arbitrary position command area of memory.

- Assign function "45" (ORT) to an intelligent input terminal 1-8 (C001-C008).

The ORT terminal functions as the teaching terminal when "02" (absolute position control) or "03" (high-resolution absolute position control) is specified for the control pulse setting (P012).

<Teaching procedure>

<1> Select the position command to be set by teaching selection (P074). <2> Move the workpiece.

-Enter an operation command with the ORT terminal turned on. The speed and acceleration/deceleration settings selected at operation command input are applied.

ORT terminal	ON
Operation command
	ON

Output frequency

The speed setting selected at operation command input is applied.

Position

*Teaching operation can be performed when power is input to the power supply terminals (R0 and T0) of the inverter control circuit.

The current position counter also operates when an external device moves the workpiece. Therefore, teaching operation can also be performed when the inverter does not operate the machine.

Note: In the case above, make sure that the power supply to the power terminals (R, S, and T) of the inverter power circuit or inverter output (U, V, and W) is disconnected from the motor. Performing teaching operation with the power supply and inverter output connected may result in personal injury or damage to equipment.

<3> Press the STR key on the digital operator when the target position is reached. <4> The current position data is set in the memory area

corresponding to the position command specified by the	Setting of P074	Position command to be set
	00	P060: Multistage position setting 0
teaching selection (P074).
	01	P061: Multistage position setting 1
	02	P062: Multistage position setting 2
	03	P063: Multistage position setting 3
	04	P064: Multistage position setting 4
	05	P065: Multistage position setting 5
	06	P066: Multistage position setting 6
	07	P067: Multistage position setting 7

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