TR-Electronic CDH582 - TR Safety - Velocity Integration Time; TR Safety - Velocity Filter Intensity

Parameter description
 TR-Electronic GmbH 2020, All Rights Reserved Printed in the Federal Republic of Germany
Page 70 of 91 TR-ECE-BA-GB-0163 v03 10/07/2020
9.1.22 TR Safety – Velocity Integration Time
The Attribute specifies the integration time in [ms] for the parameter TR Safety –
Velocity Format, see Page 69.
The parameter serves to calculate the velocity, which is output via the cyclic process data. The
velocity is specified in [ (steps/integration time) * factor ]. Long integration times allow high-resolution
measurements at low speeds. Low integration times show velocity changes more quickly and are
suitable for high velocities and high dynamics.
UINT
Lower limit
1 ms
Upper limit
1000 ms
Default 100 ms
Example
Given:
- Programmed resolution = 8192 steps per revolution
- Speed = 4800 revolutions per minute
- Integration time t
i
= 50 ms = 0.05 s
- Factor = 1
Determine:
- Output value in (steps/integration time) * factor
Number of steps / s =
8192 steps * 4800 rev.
=
655360 steps
Rev. * 60 s
1 s
Number of steps/t =
655360 steps
* 0.05 s = 32768 steps
1 s
(Steps/integration time) * factor = 32768 steps / 50 ms
9.1.23 TR Safety – Velocity Filter Intensity
Use the Attribute TR Safety – Velocity Filter Intensity to average the output velocity.
The strength of averaging can be specified. You can also select whether the filtering should be
switched off dynamically during the acceleration phases, see the Attribute TR Safety – Velocity
Filter Type described below. Thus the velocity signal can quickly follow the actual course in the
event of changes and is stable in the stationary range.
USINT
Lower limit
0
Upper limit
10
Default 0
0: no filtering
1: weak filtering, high cutoff frequency
. . .
10: strong filtering, low cutoff frequency