4 Quick-start guide
Limit switches are used to limit the range of movement of the application. For the optimum
set-up of the limit switches, the following conditions must be fulfilled:
l
In the case of movement at high speed, the necessary distance for braking must be
taken into consideration. The installation of the limit switches must provide
sufficient space for stopping until the stop is reached.
l
To ensure the correct performance of homing runs and the correct disabling of the
direction of rotation by the servo drive, the limit switches must be suitable for the
direction of movement of the drive. This means that in the case of a positive
movement (the position value in the actual value display increases), limit switch 1
(E1) will be actuated, thereby limiting the range of movement.
4.4.12
Configuration of the speed controller (auto-tuning with
FAST)
The Metronix ServoCommander
®
parameterisation program and the auto-tuning tool
FAST (Flexible Advanced Servodrive Tuning) can be used for the automatic determination
of the parameters for the speed and position controller with regard to the application.
System damage caused by oscillations
Using this method for adjusting the speed and position controllers will briefly cause
oscillations of the drive and mechanical components.
In extreme cases, the system may be damaged.
Do not use this method if the system is prone to oscillate as damage may result.
The auto-tuning tool FAST is suitable for the following types of systems:
Rigid systems:
l
Rotatory synchronous motor with a direct load connection
l
Linear motor with a direct load connection
Partially elastic systems:
l
Rotatory synchronous motor with a transmission and load connection
l
Rotatory synchronous motor with or without a transmission and a translatory ball
screw axis with a direct load connection
The auto-tuning tool FAST is not suitable for elastic systems (e.g. a motor with a toothed
belt axis). However, these systems can also be optimised rather well.
Product manual BL 4000-C
Page 57 of 298
