Endress+Hauser Silometer FMC 672 Z, Инструкция по установке и эксплуатации

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2.3 Transmitter wiring
Warning!
•
Make electrical connections with the power supply switched off!
•
When wiring up probes and sensors in explosion hazardous areas, observe the
instructions on the certificate and other appropriate regulations.
Rack wiring Fig. 2.5 is a pin assignment diagram for the Silometer FMC 672 Z/677 Z.
•
Terminals z 30, b 14, d 14 and b 10 are connected internally
•
Inputs d2, d4 and z2, z4 are electrically isolated from the circuit and each
other.
•
The circuit zero of the unit (
⊥
) is connected to the negative terminal of the
supply voltage.
Note!
•
Two indexing pins, at positions 1 and 23 in the rack connector ensure that Silometer
FMC 672 Z/677 Z transmitters only can be inserted at these points. The pins must
be inserted if the rack is not custom built by Hauser.
Rackbus
2
1
+
-
z2
z4
L
L+
20 V...30 V
z30
d32
d2
d4 +
ZA 67...
d10
b10
z18
d20
z20
z22
d24
z24
r
u
a
r
u
a
r
z26
d28
z28
u
a
d b z
+ +
2
4
10 +
6
8
12 + + +
14 +
16
18
20 u
22
24 u
26
28 u
30 L
32 L+
+
+
z14
0/2...10 V
+
+
b12
b14
0/2...10 V
+
+
z12
d14
0/4...20 mA
+ + d12
d14
0/4...20 mA
2
1
+
-
d2
d4
EC 37 Z/EC 47 Z
EC 37 Z/EC 47 Z
r
a
r
a
r
a
Analogue
outputs
Relay
➀
Alarm relay
Power supply
Relay
➁
Level ,
volume
Relay
➀
Relay
➁
BA064E11
Alarm relay
FMC
672 Z
677 Z
Non-Ex- area
Input channel 1
Input channel 2
DC supply
Ex-area
Remote dialog
Current
➁
Voltage
➁
Rackbus
Capacitance/
Multicap probe
Capacitance/
Multicap probe
Inputs
Current
➀
Voltage
➀
Fig. 2.5:
Pin assignment diagram for
Silometer FMC 672 Z/677 Z with
capacitance probes.
Silometer FMC 672 Z/677 Z Chapter 2: Installation
13