As-interface, As-interface pin assignment, As-i – Norgren VS18 Series Valve Advantage User Manual
Page 76: Nterface, As-interface section, 6 as-i
VS18/VS26
MAINTENANCE & INSTRUCTION BOOKLET
8.6 AS-I
NTERFACE
Norgren AS-Interface Fieldbus systems conform to AS-I V2.11
specification.
Communication system:
2-wire ASi bus
communication, electronic
and input power
Number of nodes per network:
Master + 31 slaves (62 slaves for V2.1-slaves which do
not use four outputs). The VS18/VS26 ASi valve islands
always has four outputs.
Total number of I/O per network:
248
Bus topology:
Tree
Note:
The valve island must be mounted on an earthed base to meet the EMC directives.
8.6.1 AS-Interface pin assignment
M12 4-pin bus connector (IP65)
Male
Pin no.
Function
Max. current
1 AS-I
+
3)
2 -
-
3 AS-I
–
-
4 -
-
Looking into node connector
M12 4-pin power connector for AS-Interface (IP65)
Male
Pin no.
Function
Tolerance
Max. current
1 +24V
DC
+/-10%
4)
2 -
- -
3 0V
- -
4 -
- -
Looking into node connector
3)
Single slave: 40mA
Double
slave:
75mA
4)
Single slave: I
max
= 20mA + n*60mA
Double
slave:
I
max
= 35mA + n*60mA
n = number of energized solenoids
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