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VIFB13 - 03/05
A-4
Appendix A
Operating voltage of 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
Bridging time if
logic voltage drops
Operating voltage of 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
24 V DC
± 25 %
(18 V DC . . . 30 V)
4Vpp
200 mA + sum
of current consumption of
inputs
internal 2 A, slow blowing
P[W] = (0.2 A +
⋅
∑ I
)
24 V
Inputs
min. 20 ms
external fuse
required (typ. 10 A)
24 V DC
± 10 %
(21.6 V ... 26.4 V DC)
4 Vpp
10 mA
+ Sum of
current consumption of
electric outputs
+ Sum of
current consumption of
the switched valve
solenoid coils
(e.g. per MIDI valve
solenoid coil 55 mA)
P[W] = (0.01 A +
∑ I
+
electric outputs
⋅
∑ I
)
24 V
solenoid coil
9809b
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