AccuLoad IV Installation & Maintenance Manual
Installation 25
3.5.4.1 A4M I/O Connections
The following drawing details the A4M board’s I/O connections.
3.5.4.2 A4M I/O Index Numbering
The following table provides details about configuring the A4M board’s I/Os.
Table 7: A4M I/O Index Numbering
Terminals Type of I/O
AccuLoad Configuration Index
Number
TBK1 Serial communication port RS232/485 Comm 1
TBK2 Serial communication port RS232/485 Comm 2
TBK3 Serial communication port RS485 Comm 3
Figure 15: A4M Board Connections
TBE6
1 HS Prv +
2 HS Prv -
3 RTD +
4 RTD -
5 RTD +
6 RTD -
7 RTD +
8 RTD -
9 Gnd
10 Gnd
TBE4
1TX
Com 4
232
2RX
3 Com
4-
In 4 DC
5+
6-
In 5 DC
7+
8-
In 6 DC
9+
10
+24 VDC
Out
11
12
13
DC Gnd14
15
16 +24 VDC In
TBK5
1+
Out 1 DC
2-
3+
Out 2 DC
4-
5+
Out 3 DC
6-
7+
Pulse
Out 2
8-
Enet
3
Enet
2
Enet
4
Enet
1
S1
OFF
1
8
ON
OFF
1
4
ON
S2
TBK2
1TX
Com 2
232
2RX
3 COM
4 TX +
485
5 TX -
6 RX +
7 RX -
8 COM
TBK3
1 TX +
Com 3
485
2 TX -
3 RX +
4 RX -
5 COM
microSD
Card
TBE2
1
2
3
4
5
6
TBE3
1
2
3
4
5
6
7
8
9
10
11
12
TBE7
1
2
3
4
5
6
7
8
9
10
L1 L2 Gnd
•••
TBE1
F1
F2
24 V
TBK1
1TX
Com 1
232
2RX
3RTS
4 CTS
5 COM
6 TX +
485
7 TX -
8 RX +
9 RX -
10 COM
TBK4
1+
In 1 DC
2-
3+
In 2 DC
4-
5+
In 3 DC
6-
7+
Pulse
Out 1
8-
9 N.C.
10 N.C.
PT1
1+
Pulse In 1
2-
3+
Pulse In 2
4-
5+
Pulse In 3
6-
7+
Pulse In 4
8-
9+
Pulse In 5
10 -
11 +
Pulse In 6
12 -
TBE5
1 RTD +
2 SIG +
3 SIG -
4 RTD -
5 RTD +
6 SIG +
7 SIG -
8 RTD -
9 RTD +
10 SIG +
11 SIG -
12 RTD -
13 SIG +
14 SIG -
15 SIG +
16 SIG -
17 SIG +
18 SIG -
PT2
1+
Pulse In 7
2-
3+
Pulse In 8
4-
CN4
A4M
AC in Com
In 7 AC
In 8 AC
In 9 AC
In 10 AC
In 11 AC
Out 4 AC
Out 5 AC
Out 6 AC
Out 7 AC
Out 8 AC
Out 9 AC
Out 10 AC
Out 11 AC
Out 12 AC
Out 13 AC
Out 14 AC
Out 9 AC
AM1
AM2
AM3
AM4
AM5
AM6
AM6
AM5
AM4
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