Norgren VS18 Series Valve Advantage - Manual (Page 59)

VS18/VS26 MAINTENANCE & INSTRUCTION BOOKLET
8.3 D EVICE N ET
Norgren DeviceNet Fieldbus systems conform to DeviceNet
specification volume 1 release 2 and the Pneumatic Valve
Device Profile.
Communication system:
2-wire CAN hardware communication protocol
Number of nodes per network: Master + 62 slaves
Bus topology: Line
8.3.1 DeviceNet pin assignment
M12 5-pin bus connector (A-coded / IP65)
Male
Looking into node connector
Pin no. Function Tolerance Max. current
1 CAN_SHLD - -
2 CAN_V+ 1) +/-25% 200mA
3 CAN_GND - -
4 CAN_H - -
5 CAN_L - -
1) Must be galvanic isolated to 24 VA valves.
M12 4-pin power connector
Male
Pin no. Function Tolerance Max. current
1 - - -
2 24 VA valves +/-10% 1)
3 0 volt - -
4 Earth - -
Looking into node connectors
1) I
max = 10mA + n * 60mA
n = number of energized solenoids
8.3.2 DeviceNet wiring
Line parameter
Parameter Line A (thick cable) Line B (thin cable)
Impedance in Ohms 120 +/-10% 120 +/-10%
Capacitance per unit length (pF/m) 12 12
Jacket Marking Vendor name & part number Vendor name & part number
Core diameter (mm) #18 Copper 19 Strands #24 Copper 19 Strands
Outside diameter 0.41 – 0.49 inches 0.24 – 0.28 inches
Line lengths
Baud rate (kBit/s) Trunk cable length (max.) in m
125 500
250 250
500 100
VS2672926-KG00E_05/07 Page 59/97