3 BASIC FUNCTION
3.4 Stroke limit function [G] [WG]
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When wiring the limit switch to equipment other than the servo amplifier
By wiring the limit switch to equipment other than the servo amplifier, such as a controller, the stroke limit function is enabled
to be used with input signals from the controller. Refer to the system configuration example shown in this section when
installing the limit switch.
Set [Pr. PD41.3 Sensor input method selection] to "1" (input from controller (C_FLS/C_RLS/C_DOG)). From the controller to
the servo amplifier, input the limit switch installed in the positioning address increasing direction as FLS (Upper stroke limit),
and the limit switch installed in the decreasing direction as RLS (Lower stroke limit).
For details of the controller settings, refer to controller manuals.
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System configuration example
The following shows an example where the limit switch is wired to the controller. To FLS (Upper stroke limit), input the limit
signal which suppresses the operation in the positioning address increasing direction against the command from the
controller. The limit switch does not need to be wired to the servo amplifier.
When setting the movable range with the position data
Use software position limit to specify the upper and lower limits in order to limit the movable range.
Page 266 Software position limit [G] [WG]
When the movable range is not limited
On a system configuration without the limited movable range, such as a conveyor, set LSP/LSN to be automatically turned on.
As the signal is set to be always turned on, the servo motor does not stop with the stroke limit. This can be set from the "Basic
Setting" of "Digital I/O" on MR Configurator2.
CN3-12
FLS
RLS
LSP
LSN
CN3-2
Controller
Servo amplifier
Movable range
Limit switch
Limit switch
Moving
part
Positioning address increasing direction
