Specifications

Chapter 3 I/O ports
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3-1-4 I/O port functions in the position mode
This section describes I/O port functions in the position mode.
CN2-1 Input signal common: IN-COM (input)
● Function
This is the common port for inputs: [CN2-2, -3, -4, -5, -10, -11]. Supply external power for inputs to this
the port.
● Connection
Connect [+24V] external power supply for inputs here.
CN2-2 Clear: CLEAR (input)
● Function
(1) If alarm exists:
This clears the alarm state, returns to operable state, and clears the error count to [0]. For alarms
that cannot be cleared, shut off the control power once, and turn it on again.
(2) If no alarm exists:
This clears the error count to [0]. At the same time, this clears the command count and the feedback
count.
● Connection
Connect [NO-contact signal (a-contact)]. Refer to [CN2-1: input signal common].
CN2-3 Servo-ON: S-ON (input)
● Function
This turns the servo power for the HA-655 driver ON and OFF.
When the input is ON, the servo power of the HA-655 driver is ON and the actuator can be driven. When
OFF, the servo power turns OFF and the motor is free to rotate.
● Connection
Connect [NO-contact signal (a-contact)]. Refer to [CN2-1: input signal common].
CN2-4 FWD inhibit: FWD-IH (input)
CN2-5 REV inhibit: REV-IH (input)
● Function
[FWD inhibit]: open state (OFF) of the input inhibits forward rotation.
[REV inhibit]: open state (OFF) of the input inhibits reverse rotation.
Open states (OFF) of both inputs inhibit rotation.
The inputs may be used to limit the motion range between limit sensors.
● Connection
Normally, connect [NC-contact signal (b-contact)]. Refer to [CN2-1: input signal common].
FWD inhibit REV inhibit
Motion range