8
INM F890 Rev 1
ALARM
ALARM
DI
F8xx-Cx
#1
F8xx-Cx
#2
Figure 6 -
“Daisy chaining” alarm contacts
5 .4 Host Connections
Connectors are provided to permit direct connection via AKB336 cables to Yokogawa
ALF111 cards. Four connectors are fitted to provide the following connections.
Pin No .
Connection
Pin No .
Connection
11
Segment 1 +
23
Segment 5 +
12
Segment 1 S
24
Segment 5 S
13
Segment 1 -
25
Segment 5 -
14
Segment 2 +
26
Segment 6 +
15
Segment 2 S
27
Segment 6 S
16
Segment 2 -
28
Segment 6 -
17
Segment 3 +
29
Segment 7 +
18
Segment 3 S
30
Segment 7 S
19
Segment 3 -
31
Segment 7 -
20
Segment 4 +
32
Segment 8 +
21
Segment 4 S
33
Segment 8 S
22
Segment 4 -
34
Segment 8 -
The host cable length should not exceed 30 meters.
5 .5 Field Segment Connections
There are eight field segment connectors. Each connector provides (+), (–) and cable
screen (S) connections. See section 5.6 for screen grounding information.
Pin No .
Connection
Pin No .
Connection
82
Segment 1 +
70
Segment 5 +
83
Segment 1 S
71
Segment 5 S
84
Segment 1 -
72
Segment 5 -
79
Segment 2 +
67
Segment 6 +
80
Segment 2 S
68
Segment 6 S
81
Segment 2 -
69
Segment 6 -
76
Segment 3 +
64
Segment 7 +
77
Segment 3 S
65
Segment 7 S
