2.5 Electrical connection
Screened twisted pairs are recommended for the instrumentation cable.
Supply voltage:
Non-hazardous area: 11.5…45 V DC
EEx ia: 11.5…30 V DC, EEx d and EEx d[ia]: 13…30 V DC, EEx nA: 11.5…36 V DC
Internal protection circuits protect against reverse polarity, HF interference and
overvoltage peaks.
A test signal can be measured using Terminals 1 and 3 without interupting the process
measurement.
Cable connection
•
Unscrew the cover of the connection compartment.
•
Insert the cable through the cable entry.
•
Connect the cable wires as shown in the connection diagram.
•
Screw down the cover.
Note!
For devices for use in explosion-hazardous areas, see national regulations and Safety
Instructions (XA…), Installation or Control Drawing.
1
2
3
+
Test
0003
4…20 mA
4…20 mA
11.5…45 V DC
EEx ia:
11.5…30 V DC
EEx d:
13…30 V DC
EEx nA:
11.5…36 V DC
BA187Y75
Figure 2.11
Electrical connection of the
Cerabar S
left:
For all versions with 4…20 mA
right:
For versions with flameproof
enclosures
Structure
PM
* ***
– I…
1
2
3
+
Test
0003
4…20 mA
EEx d[ia] IIC T6
Control
room
BA187Y23
Field
Internal
connection
– Pole
Terminal 2
is grounded
Ground
terminal on
housing
power-
supply
potential
equalisation
Note!
Cerabar S
4…20 mA
Han7D
1
2
3
8
7
6
5
4
–
+
1 2 3
BU
1
BN
GN-YE
2
3
3
BA187Y76
PE connection
(green-yellow)
– (brown)
+ (blue)
BU: blue
BN: brown
GN-YE: green-yellow
Figure 2.12
Harting plug pin assignment
Structure "Housing"
PM
* ***
–
❑
L…
PM
* ***
–
❑
K…
U [V]
R [
Ω]
0
1560
1560
1000
500
11.5
30
45
20
Standard
U [V]
R [
Ω]
0
1560
1000
500
11.5
30
45
20
860
EEx ia IIC T4/T6
U [V]
R [
Ω]
0
1560
1000
1140
500
11.5
30 36
45
20
EEx nA
U [V]
R [
Ω]
0
1560
1000
790
500
13
30
45
20
EEx d [ia] IIC T6
EEx d IIC T4/T6
BA187Y24
when Imax = 21.5 mA
Figure 2.13
Load diagrams
2 Installation
Cerabar S
16
Hauser
Summary of Contents for Cerabar S PMC 731
Page 6: ...6 Endress Hauser...
