Endress+Hauser gammapilot FTG 671, Operating Instructions Manual

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Rackbus For system use, wire the Rackbus as shown in Fig. 2.15.
•
For ZA 672 (Modbus) - Computer/PLC wiring see Operating Instructions
BA 054E
for ZA 673 (PROFIBUS) see Operating Instructions BA 073E
for ZA 674 (FIP) see Operating Instructions BA 085E
•
Be sure that the system is properly grounded. A difference in ground potential
between the network device and Gateway can cause loss of data or
transmission faults
Relays Alarms and limit switch relays can be connected as shown in Fig. 2.16.
•
Max. current per contact 2.5A : for switching capacity see Section 2.6.
Alternative 2
+
RACKBUS
d b z
2
4
6
10 +
8
12 + +
14
16
32 L+
+
RACKBUS
d b z
2
4
6
10 +
8
12 + +
14
16
32 L+
+
RACKBUS
d b z
10 +
18 r
20 u a
22 r
24 u a
26 r
28 u a
30 L-
18 r
20 u a
22 r
24 u a
26 r
28 u a
30 L-
L+ L-
2
4
6
8
14
16
18
20
22
28
26
24
30
32
12
u
a
r
u
a
r
u
a
r
BA082E17
Max. 64
Commutec-
transmitters in
parallel on
Rackbus
Commutec transmitters FTG, FMB, FMC, FMU, PMX, TMT etc.
ZA 672 FTG 671
Fig. 2.15:
Rackbus wiring diagram
Max.current
per line
2,5 A
BA0082E18
Recommended
Alternative 1
Fig. 2.16:
Suggestions for wiring
together relays and alarms
Gammapilot FTG 671 Chapter 2: Installation
22