Interconnection Examples For Peripherals - ABB COPA-XE Instruction Bulletin

Electromagnetic Flowmeter
COPA-XE / MAG-XE
9.3.6

Interconnection Examples for Peripherals

For Digital Communication
Current Output (not available with Profibus DP)
(for Profibus PA only 4-20 mA)
internal external
+
–
Pulse Output and Contact Output
internal
Ux
V8
P7
Contact Output Ux / P7 for System Monitoring, Empty
Pipe, Max.-Min.-Alarm or F/R Signal
Function software selectable
Pulse Output Optocoupler Ux/V8
Profibus DP
The resistors R1, R2, R3 are bus termination resistors.
They are to be installed when the instrument is
connected at the end of the bus.
R1 = 390 Ω; R2 = 220 Ω; R3 = 390 Ω
internal external
GND
B
A
+VD
Bus
Profibus DP
Fig. 39 Interconnection Examples for Digital Peripherals
50
external
24 V+
R
Imax
Imax
R
Imax=220 mA
Profibus PA
The resistor R and the capacitor C
form the bus termination.
They are to be installed when the
instrument is connected at the end
of the bus.
R = 100 Ω; C = 1 µF
R1
R2
R3
4 - 20 mA
Connection Example for Separate Forward and
Reverse Pulses over Contact Output
internal
Ux
V8
P7
internal external
PA-
PA+
Bus
Profibus PA
load: max. 600 Ohm
external
24 V+
Forward
Reverse
Imax=220 mA
Data Link RS485
Two wire data link, halfduplex,
max. cable length: 1200 m, max.
32 instruments on bus, twisted
pair cable.
internal
A
R
B
C
external