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VIFB13 - 03/05
9809b
3. Installation
Power unit
PLEASE NOTE
Please note that with a common voltage sup-
ply for pin 1 (electronic components and in-
puts) and pin 2 (outputs/valves), the lower
tolerance of ± 10 % for both circuits must be
observed.
Check the 24 V operating voltage of the outputs
while your system is operating. Make sure that
the operating voltage of the outputs lies within
the permitted tolerances even during full oper-
ation.
Recommendation
•
Use a closed loop power unit.
•
Calculate the complete current consumption
according to the following table and select
both a suitable power unit and cable sectional
area.
•
Avoid long distances between the power unit
and the terminal. Calculate the permitted
distance according to Appendix A.
The following rule applies for type 03:
Operating
Cable sectional
voltage
area
Pin 1
= 2.2 A
Pin 2
= 10 A
V
= 24 V
B
Distance
≤ 8 m
2
1.5 mm
2
≤ 14 m
2.5 mm
3-17
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