DRAFT - 11 December 2014
DRAFT - 11 December 2014
INM MTL4850_54 Rev4
9
DRAFT - 11 December 2014
+24V
D5
SW1
HART
ADDRESS
2 8 32
D2
D4
D6
R2
D3
R1
D1
SKT 1
FS1
FUSE
FS2
FUSE
R3
R4
0V
PW
R
2
PWR1
0.5A-m
0.5A-m
CH1-32
CH33-64
CH1-16
CH17-32
CH49-64
CH33-48
PWR1
PWR2
4 16
SYSCONN. IDENT
DATE
CODE
LABEL
HMP-HM6
4
P4
P3
P2
P1
RS485
1
2
B
A
B
C
A
C
RS485
AR
S485
B
ON
MTL4850
MTL4850
RS485
Comms
NOTE
The standard MTL ribbon cables used
between the HMP-HM64 and the individual
boards are suitable only for in-cabinet use.
Any cables used outside of the cabinet or
under control room floors would need to
provide additional screening and greater
mechanical protection.
However, this is normally unnecessary as, to
maintain integrity, each group of cabinets
would communicate their HART signals via
independent MTL4850/54 modules using the
RS485 interface.
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
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
HMP-HM64
Figure 4.5
HMP-HM64 connections
