Instruction manual

4
INM4840-5 Nov 2007
4
MTL4842MTL4842MTL4842MTL4842
PWR
PWR
PWR
PWR
+24V
RS485
Comms
To additional
30 (max.)
MTL4841
comms.
modules
FIELD
BPHM64
HART
INTERFACE
SYSTEM
Tx2+
Ch2+
Ch2-
Ch1-
Ch1+
Tx1+
Ch1-
Ch1+
Tx1+
Tx2+
Ch2-
Ch2+
HCU16
15
13
11
9
1
7
3
5
16
14
12
10
2
8
4
6
15
13
11
9
1
7
3
5
16
14
12
10
2
8
4
6
16ch
HART
inputs or
outputs
16ch
HART
outputs
(filtered)
HART
HART
DCS
terminals
DCS
terminals
DCS
terminals
16 ch to DCS
analogue input/output
DCS
HART
16ch I.S.
4-20 mA
analogue
+ HART
signals
+ 16ch
links
between
backplanes
MTL4842MTL4842MTL4842MTL4842
MTL4841
MTL4842MTL4842MTL4842MTL4842
MTL4842MTL4842MTL4842MTL4842MTL4842
6
8
7
3
4
5
1
2
TB8
7
8
6
4
5
3
1
2
TB7
8
7
5
6
4
1
2
3
TB6
3
8
5
7
4
6
1
2
TB5
FIELD SYSTEM
1
4
3
5
7
8
6
2
1
4
3
5
7
8
6
2
1
4
3
5
7
8
6
2
TB4
TB3
TB2
8
5
6
7
3
4
2
TB1
1
HCU16AO
HCU16
BPHM64
BPHM64
BPHM64
BPHM64
+ 64ch
+ 64ch
+ 64ch
Figure 4.1 - System diagram showing key components