VOLTCRAFT VC940 - V06-09 Provozní pokyny stáhnout pdf (Strana 42)

MultiSystem 4010

Operating Instructions

Rev. 1.5 / 120816 english

Page 42 of 45

Baud rate CAN select the data transmission speed of the CAN bus; this must be identic for all

participants, otherwise communication will not be possible

CAN Power select whether a supply power shall be emitted via the CAN interface

CANopen device highlight this line and press

to send the start command into the CAN bus

6.10.2. Filter settings

Highlight the item „Filter settings“ in the device menu and press :

Here you may use several software filters:

Filter for analog input channels (AD-channels)

The analog input channels are scanned with 1 ms. With the software filter mean values can be

calculated from several measured values to smooth the input signal. You may select between “1 ms”

(no smoothing) and “2/4/8/16 ms” (mean value caculation from 2/4/8/18 measured values). At “16 ms”

the instrument will deliver a new measured value each 16 ms.

Filter for frequency input channels

Information

The parameters for the combined input channel Ch4 will

only be displayed if it is programmed as frequency input

channel.

You may define two parameters for each frequency input channel:

Gate time a new measured value will not be accepted until the gate time expired; enter a

multiple og 10 ms

Lowest frequency select the lowest frequency that shall be measured; this influences the behavior of

the instrument, when the measured value „Zero“ is displayed

Example a lowest frequency of „0.25 Hz“ is defined and the measured object (e.g. a turbine

flow meter) stops running; this would have to be displayed as a measured value of

„0.00“; since the instrument is requested to measure down to 0.25 Hz, it will wait

four seconds for a new measured value, until “0.00” is displayed

In this case you should use a lowest frequency of 10 or 100 Hz, then the stopping

of the turbine will be displayed after 0.1 or 0.01 seconds.

Confirm the settings with

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VOLTCRAFT VC940 - V06-09 Provozní pokyny Strana 42