MHT258a (Engl.)5-25
■ Related items
System parameter 94
Para. Name Setting range Initial value Change
94 Parameter rewrite inhibit 0: Edit permitted, 1: Edit inhibited 0 Always
When 1 is set at system parameter 94, parameter editting with keypad panel is disabled, same as with PC loader or exclusive loader.
The system parameter 94 is always rewritable.
The relation between the edit permit command and system parameter 94 is as follows:
Edit permit command
(55)
System para. 94 Edit permit ON
(29)
Edit/Initialize
Not assigned 0 : Edit permitted ON Yes
ON 0 : Edit permitted ON Yes
OFF 0 : Edit permitted OFF No
Not assigned 1 : Edit inhibited OFF No
ON 1 : Edit inhibited OFF No
OFF 1 : Edit inhibited OFF No
5.5.3 Overtravel
Move of machine can be forcibly stopped by inputting signals from limit switch etc.
・+ direction overtravel [+OT] (7), - direction overtravel [-OT] (8)
Input signal is from overtravel (OT) preventive limit switch placed at machine moving direction end.
Both signals are always valid except for in torque control.
When the input signal turns off, motor rapidly decelerates to a stop in negligence of the rotation command in the detecting direction.
Motor can rotate by pulse train input in the direction opposite to detecting direction, or by manual feed (forward command or reverse
command).
・+OT detection (38), -OT detection (39)
While [+OT] (7) control input signal is off, the +OT detection (38) output signal is on. While [-OT] (8) control input signal is off, the -OT
detection (39) output signal is on.
■ Interface
■ Parameter setting
To allocate the +OT signal to the control input terminal, set (7) to the system para. Set (8) for the -OT signal. If these signals are not
allocated to the control input terminal, these signals are deemed "always on."
+OT (7), -OT (8)
ON : Motor can rotate
OFF : Ignores rotation command and stops the motor.
+OT detection (38), -OT detection (39)
OT detection
ON : OT is detected
OFF : OT is not detected
P24
M24
2.2k
+24V
+24V
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