Burkert Type 8681 - Manual (Page 41)

41
AS Interface - Design
connections:
Multi-pole connection version 1 x M16 x 1.5 cable gland / A/F19 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 signal)
1 x M16 x 1.5 cable gland / A/F19
for external initiator
clamping area 3 to 6 mm, with dummy plugs
with screw terminals for cable cross-sections 0.14 to 1.5 mm²
power supply: 29.5 to 31.6 V DC (according to specification)
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-conductor,
NO or NC (factory setting NO), 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 retrieval of the 3 valve positions reported back binarily is described in chapter
15. Position Measuring System.
Outputs (from master perspective) / solenoid valves:
Switcing capacity, max. 0.8 W via AS interface or 0.9 W during activation, per solenoid valve
Watchdog function integrated
Output power reduction via AS interface - electronics integrated
pull-in current 30 mA or 0.9 W / 200 ms (at 30.5 V AS Interface voltage)
Holding current 26 mA or 0.8 W (at 30.5 V AS Interface 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 Interface voltage max. 33 mA or 1 W per illuminated display
Number of representable colors 2 colors for process valve switching states
1 color for signaling a fault
For "universal color switching", see chapter
16. LED - Color
Assignments.
Power supply via aS interface bus (without external power supply):
Max. power consumption from AS interface 200 mA (incl. external initiator with 30 mA)
Power consumption input during normal operation
from the AS interface (after current reduction): ≤ 150 mA
3 valves activated, 1 Position reported back by LED
display, no external initiator
Integrated short-circuit protection
english
Control Head Type 8681