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ANALOG INPUT MODULE

Page 2

April 15, 1997

5) Grounding the Enclosure and Circuit Board.
Grounding is essential for proper operation and
protection of the AIM and safety of the user. Refer to
Figure 2 below for grounding connections.

Crimp
Eyelet

Case or

Conduit Ground

Crimp
Eyelet
s

AIM

Ground

Terminals

AIM

Circuit

Board

12 AWG

Stranded

20 feet

Max.

IPONI

Figure 2   Grounding Connections

Locate the hole drilled into the enclosure cover. Attach a
crimp eyelet on the inside of the cover using the 1/4”
screw and nut. Connect one of the grounding wires to
the crimp eyelet and crimp tight. Locate the hole drilled
on the upper right-hand wall inside the enclosure. Attach
the remaining crimp eyelets on the interior side of the
wall using a 1/4” screw and nut. Connect the grounding
wire attached to the enclosure door to one of the crimp
eyelets on the inside wall. Connect a grounding wire
from a free crimp eyelet on the inside wall to an
available  ground terminal (terminals 41-72). Attach the
remaining crimp eyelet of the inside wall to a suitable
ground source, such as case ground for electrical
enclosures and conduit.

6) Wiring Connections and Features.  Figure 3
shows the wiring connections (other than grounding
connections) and major features of the AIM. Wiring
connections include 24VAC power, channel input
terminals 1-32, channel ground terminals 41-72,
auxiliary terminals and communication connections.
Channel grounds are electrically common (non-
isolated). Auxiliary terminals are as indicated below:

40

37

39

38

36

35

33

34

80

77

79

78

76

75

73

74

+ 8 VDC

+ 8 VDC

+ 8 VDC

+ 24 VDC

+ 24 VDC

+ 24 VDC

Contact 1B

Contact 2B

+ 8 VDC

+ 8 VDC

+ 8 VDC

+ 24 VDC

+ 24 VDC

+ 24 VDC

Contact 1A

Contact 2A

Other features include a 1.5A 250V fuse (5mm x
20mm), LED indicators and system test pushbutton.

Aux.
Terminals

Network
Connection

24VAC

Connector

Channel 1

Channel 32

Logic

Power

24VDC

Power

Status

System Test

1.5A
250V
Fuse

Channel
Input
Terminals
(upper)

IPONI Ribbon
Cable Connector

IPONI 3-Pin
Connector

Shield

Newtork

8VDC

Power

Channel
Ground
Terminals
(lower)

3
2
1

Figure 3   Wiring Connections and Features

7) Communication Connections.  Power must be
disconnected from the AIM before making
communication connections. Failure to disconnect
power may result in electrical shock and/or damage to
the AIM and IPONI.

As shown in Figure 4 there are two connections from the
IPONI to the AIM, and a network connection to the AIM.
Plug the 3-terminal Phoenix connector with pre-wired
cable into the IPONI and plug the other end of the cable
into the 3-pin connector at the bottom left corner of the
AIM. Plug the DB9 ribbon cable connector into the AIM.
Connect the network communication wires to the
network connector at the bottom right corner of the AIM
as shown. The shield is “floating”, or not grounded at the
AIM.

Network
Connection

IPONI Ribbon
Cable Connector
(DB9)

3-Pin
Connector

Green Phoenix
Connector with
Pre-wired Cable

Network
Shield

IPONI

AIM Circuit

Board

Floating Shield

Network

3
2
1

Figure 4   Communication Connections

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