Festo 174335, Electronic Manual

Page: 166 / 184

A. Technical appendix
A-4
Festo P.BE-VIFB13-03-EN en 0003c
Operating voltage for electronics and inputs
(pin 1 - operating voltage con-
nection)
– Nominal value (polarity-safe)
– Tolerance:
– Residual ripple
– Current consumption (at 24 V)
– Protection of input/sensor
supply
Power consumption (P)
– Calculation
Bridging time (drop in logic
voltage)
24 V DC
± 25 % (18 V ... 30 V DC)
4 Vpp
200 mA + Sum
Current consumption internal in-
puts
2 A, slow-blowing
P[W] = (0.2 A +
å
I
Inputs
)
×
24 V
min. 20 ms
Load voltage outputs/valves
(pin 2 - load voltage connection)
– Nominal value (polarity-safe)
– Tolerance:
– Residual ripple
– Current consumption (at 24 V)
Power consumption (P)
– Calculation
External protection required (typi-
cally 10 A, see example of circuits,
Chapter 3.3.2)
24 V DC
±10 % (21.6 V ... 26.4 V DC)
4 Vpp
10 mA
+ Sum of current consumption
electr. outputs
+ Sum current consumption of
switched valve solenoid coils
(e. g. per MIDI-valve solenoid
coil 55 mA)
P[W] = (0.01A
+
å
I
electr. outputs
+
å
I
Solenoid coil
)
×
24 V