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AS Interface - Design
Connections:
Multi-pole connection version
1 x M16 x 1.5 cable gland / SW19 with multi-pole connection
(M12 plug according to IEC 61076-2-101, 4-pole on a cable
of 8 or 80 cm length for power supply and signals)
1 x M16 x 1.5 – connection option for external initiator (sealed
with dummy plug - remove these before use!)
Power supply:
29.5 ... 31.6 V DC (according to specification).
21.0 ... 31.6 V DC (according to specification Power24)
Input / proximity switches (external initiator: S4 in):
Power supply:
AS interface voltage present at control head - 10 %
Current carrying capacity, sensor
power supply:
max. 30 mA
Short-circuit protection
Design:
DC 2- and 3-wire,
Normally open contact, PNP output
Input current 1 signal:
I
Sensor
> 6.5 mA, limited internally to 10 mA
Input voltage 1 signal:
U
Sensor
> 10 V
Input current 0 signal:
I
Sensor
< 4 mA
Input voltage 0 signal:
U
Sensor
< 5 V
Inputs (from master perspective) /
binary feedback signals:
The recovery of the 3 valve positions reported back in binary format is described in Chapter "16. Position
Measuring System".
Outputs (from master perspective) / solenoid valves:
Max. switching capacity
max. 0.9 W (per solenoid valve)
Type. Continuous output
0.6 W (per solenoid valve)
Watchdog function
integrated
Power reduction
integrated via AS interface electronics
Pull-in current
30 mA or 0.9 W / 200 ms (at 30.5V-AS-i voltage)
Holding current
20 mA or 0.6 W
(at 30.5V-AS-i voltage)
Operating mode
long-term operation (100 % ED)
Valve type
Type 6524
Central display of the switching states:
Power consumption from AS-i
at 30.5V-AS-i voltage
max. 33 mA or 1 W per illuminated display
Number of colors which can be displayed
2 colors for process valve switching states
1 color for signaling a fault
For "universal color switching" see Chapter "17. LED - Color
Assignments".
Power supply via AS interface bus (without external power supply):
max. power consumption from AS-i
200 mA (including external initiator with 30 mA)
Power consumption during normal operation
from the AS-i (after current reduction):
≤
150 mA
3 valves activated, 1 position reported back by LED display,
no external initiator
Integrated short-circuit protection
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