Termination Connection For Devicenet Systems; Net Topology Of A Devicenet System - Burkert 8630 Operating Instructions Manual

D N
EVICE ET
Process value (circular plug M8, continuation)
Input type * Pin Assignment
1
Frequency
2
internally
3
supplied
4
1
Frequency
2
externally
3
supplied
4
1
Pt-100 (see 2
Note) 3
4
* adjustable via software
NOTE
For line compensation reasons, connect sensor Pt-100 via three conductors. PIN3 and 4
must be bridged at the sensor.
Actual process value for the fluid flow controller option (2 M8 round
plugs), or optionally: with temperature sensor input (3 M8 round
plugs)
Input type
internally
supplied
transmitter*
option:
temperature
transmitter*
* With external supply of the sensors the mass of the standard
signal must be connected with the mass of supply voltage.

Termination connection for DeviceNet systems

On installing a DeviceNet system, it is important to have the correct termination circuit for the data lines.
The circuit avoids the occurrence of faults through signal reflections on the data lines. For this purpose
the main line is to be terminated at both ends with resistors of respectively 120 Ω and 1 / 4 W power
loss.
138 - 8630
+ 24 V supply sensor
clock input +
not assigned
clock input - / GND
not assigned
clock input +
not assigned
clock input -
not assigned
process actual 1 (current supply)
process actual 2 (GND)
process actual 3 (compensation)
Plug Pin Assignment
1 1 + 24 V - transmitter supply p1
2 4 ... 20 mA - transmitter output p1
3 + 4 not assigned
2 1 + 24 V - transmitter supply p2
2 4 ... 20 mA - transmitter output p2
3 + 4 not assigned
3 1 + 24 V - transmitter supply
3 4 ... 20 mA - output
transmitter temperature
2 + 4 not assigned
Jumper external circuit
2
3
4
Jumper external circuit
Pt100