Festo 03 - Page 145

Operating voltage electronic components and inputs
(Pin 1 – operating
voltage connection)
• Rated value
(protected against
incorrect polarity)
• Tolerance
• Residual ripple
• Current consumption
(at 24 V)
• Fuse for
supply to inputs/
sensors
Power consumption (P)
• Calculation
DC 24 V
± 25 %
(DC18 V...30 V)
4Vss
200 mA + sum
of current consumption of
inputs
internal 2 A,
slow blowing
P[W] = (0.2 A +
∑ I
Inputs
) ⋅ 24 V
Bridging time if logic
voltage drops
min. 5 ms
Operating voltage outputs/valves
(Pin 2 – operating
voltage connection)
• Rated value
(protected against
incorrect polarity)
• Tolerance
• Residual ripple
• Current consumption
(at 24 V)
Power consumption (P)
• Calculation
External fuse required (typ.
10 A, see circuitry example
chapter 3.2)
DC 24 V
± 10 %
(DC 21.6 V ... 26.4 V)
4 Vss
10 mA
+ Sum of
current consumption of
electrical outputs
+ Sum of current con-
sumption of the switched
valve solenoid coils
(e.g. per MIDI valve
solenoid coil 55 mA)
P[W] = (0.01 A +
∑ I
electrical outputs
+
∑ I
solenoid coil
) ⋅ 24 V
VIFB6 - 03 Appendix A
A-4
9809c