41
24 V DC - Design
Solenoid valves:
Typ. switching capacity:
0.9 W (per solenoid valve, for 200 ms after switching on)
Typ. continuous output:
0.6 W (per solenoid valve, from 200 ms after switching on)
Power consumption per solenoid valve: 50 mA at 12 V DC
25 mA at 24 V DC
22 mA at 28 V DC
Operating mode:
Long-term operation (100% ED)
Central display of switching statuses:
approx. 42 mA with a power supply of 24 V DC per illuminated
display;
colour switching see chapter
Outputs/binary feedback signals:
S1 out - S4 out
Design:
Normally open contact, PNP output
short-circuit-proof,
with self-clocking short-circuit protection
Switchable output current: max. 100 mA per feedback signal
Output voltage - active:
≥ (operating voltage - 2 V)
Output voltage - inactive:
max. 1 V in unloaded state
Input / proximity switches (external initiator: S4 in):
Power supply:
Voltage present at the control head - 10%
Current carrying capacity sensor supply: max. 90 mA
Short-circuit protection
Design:
DC 2- and 3-conductor,
NO or NC (factory setting NO), PNP output
Input current 1 signal:
ISensor > 6.5 mA, limited internally to 10 mA
Input voltage 1 signal:
USensor > 10 V
Input current 0 signal:
ISensor < 4 mA
Input voltage 0 signal:
USensor < 5 V
Inputs valve actuation (Y1 - Y3):
Signal level - active:
U > 10 V, max. 24 V DC + 10%
Signal level - inactive:
U < 5 V
Impedance:
> 30 kOhm
english
Control Head Type 8681
Summary of Contents for 8681
Page 165: ...165 english Control Head Type 8681 ...
Page 166: ...www burkert com ...