Siemens 6AV6651-7KA01-3AA4 - S7-1200 + KTP400 Basic Starter Kit 6AV6651-7KA01-3AA4 Manual Do Utilizador

Códigos do produto

6AV6651-7KA01-3AA4

Motion control is easy

10.6 Operation of motion control for S7-1200

Easy Book
Manual, 03/2014, A5E02486774-AF

245

Hardware limit switches

Hardware limit switches determine the maximum travel range of the axis. Hardware limit

switches are physical switching elements that must be connected to interrupt-capable inputs

of the CPU. Use only hardware limit switches that remain permanently switched after being

approached. This switching status may only be revoked after a return to the allowed travel

range.

Table 10- 36 Available inputs for hardware limits

Description

RPS

LIM-

LIM+

Built-in I/O

I0.0 - I1.5

SB I/O

I4.0 - I4.3

When the hardware limit switches are approached, the axis brakes to a standstill at the

configured emergency deceleration. The specified emergency deceleration must be

sufficient to reliably stop the axis before the mechanical stop. The following diagram

presents the behavior of the axis after it approaches the hardware limit switches.

①

The axis brakes to a standstill at the configured emergency deceleration.

②

Range in which the hardware limit switches signal the stats "approached".

[Velocity]

Allowed travel range

Distance

Mechanical stop

Lower hardware limit switch

Upper hardware limit switch