Festo Compact Performance CPV Series, Руководство пользователя

Страница: 33 / 74

1. Installation
1−21
Festo P.BE−CP−SD8−...−EN en 0503b
Bus length
The table below shows guidelines for the maximum distance
as a factor of the baud rate selected. Exact specifications can
be found in the manuals for your control system or bus inter
face.
Baud rate Maximum
distance Max. branch
line length
1000 kBaud 10 − 40 m 0.3 m
500 kBaud 50 − 100 m 0.75 m
125 kBaud 500 m 3 m
20 kBaud 1000 m 7.5 m
Bus supply
Avoid long distances between the bus interface/logic supply
and the CPV valve terminal.
Please note
Bus slaves have different tolerances in respect of the inter
face supply, depending on the manufacturer. You must
take this into account when planning the bus length and
placing the power unit.
Recommendation:
Place the power unit in the centre of the bus. The following
tolerance for the bus interface supply applies to Festo CPV
valve terminals:
V
max
= 25 V
V
min
= 11.5 V