Andover Controls ACC EMX 160 Installation Guide
Copyright © 1992 Andover Controls Corporation, 300 Brickstone Square, Andover, MA 01810 All Rights Reserved.Subject to change without notice.
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Order No. 30-3001-199
ACC EMX 160
Installation Guide
Your warranty is effective for 18 months starting on the
date the system is shipped.
Before You Begin
You can connect one or more EMX modules to most Infinet
controllers that have an expansion port. The particular controllers are covered in the ACC EMX Modules Configuration
Guide (also enclosed with this product).The configuration
guide also tells how many inputs and outputs are allowed for
any a particular controller. Before you proceed, be sure the
controller allows modules and the number and type of modules you plan to use.
Warning
Be sure wiring and installations comply with local, state,
and national electrical codes.
Version B
Power Requirements
The first two modules receive power from the Infinet controller on-board power supply and operate on 24 to 26 VDC.
You can add additional EMX modules other than an EMX
160. Usually, one or two more modules may operate on internal power; then you must add an external power supply
source of 24 VDC and properly connect the modules to it.
(See the ACC EMX Modules Configuration Guide.)
The EMX 160 consumes up to 11 mA at 24 VDC.
Environmental Requirements
The EMX 160 operates in the same environment that any
Infinet controller operates in.
Input Characteristics
Digital inputs have the following requirements:
Figure 1 shows the EMX 160 module.
Figure 1. The EMX 160 Module
EMX 160
EXTERNAL
POWER
RET
IN1
IN2
RET
IN3
IN4
RET
IN5
IN6
RET
IN7
IN8
BOARD
1
2
Dimensions
• Input Impedance—24K
Ω referenced to 5 V
Counter inputs have the following requirements:
• Input Impedance—24K
Ω referenced to 5 V
• Filtering—Corner Frequency at 106 Hz –20 db/decade
Install the EMX 160
1. Unpack
Be careful when unpacking the unit or units to not damage
the packaging material—you must reuse it if you ship the
product back for repair.
2. Connect to the Infinet Controller
Connect the module to the Infinet controller as outlined in
the steps that follow.
Caution
Each EMX 160 module is approximately 6.13 × 5.72 × 1.52 in.
Be sure you disconnect the Infinet controller’s AC power
source before you connect any modules.
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1.Look at the bottom panel of your Infinet controller. On
that panel is an expansion port in approximately the
center of the panel.
2.Look at the EMX 160 module. Notice that it has a
connector on the top and on the bottom. Plug the top
connector into the Infinet controller.
3.If you are connecting more than one module to your Infinet
controller, connect the second one to the bottom of the first.
4.Set the BOARD switch to 1 on the first EMX 160 on the
controller, and the BOARD switch to 2 on the second
EMX 160. If you do not plan to connect more than one
EMX 160 module, the BOARD switch can be set to
either 1 or 2.
Never set two modules of the same model number to the
same board number.
3. Connect the External Power Supply
Figure 3 shows the jumper in the two possible positions,
one for the internal power supply, the other for the external.
Each is set to the internal position when you receive it.
Figure 3. Jumper Positions for Internal and External
Power Supplies
Jumper Position,
Internal Power
Supply
Jumper Position,
External Power
Supply
Note
You need to change the jumper position only on the module(s) actually connected to an external power supply, not
on any other modules. Never change the jumper position of
other modules.
Wire the Inputs
If you are installing multiple modules, you may need an
external power supply. To determine what you need, refer
to the ACC EMX Modules Configuration Guide.
Figure 2 shows where you connect the external power
supply to the 2-pin Berg type connector on the EMX 160.
Figure 2. Location of External Power Connection
EMX160
Power
Supply
Jumper
EXTERNAL
POWER
RET
IN1
IN2
RET
IN3
IN4
RET
IN5
IN6
RET
IN7
IN8
BOARD
1
2
Connect
External
Power
Supply
Here
Caution
Do not remotely ground any part of the sensor wiring. Remote grounds connected to a return terminal could make
the controller operate incorrectly or damage the equipment. The signal return is not a true earth ground. It is an
electronic reference point necessary to interpret the sensor properly. Do not externally ground sensor or switch
terminals that return to the module or controller.
Caution
Although inputs usually function properly with unshielded sensor wire, you may need shielded wire if you run the
wire as follows:
• In the same conduit with other noise-generating
conductors such as 60 Hz AC power.
• In long runs close to large power-consuming or powergenerating equipment that can produce 60 Hz noise.
4. Reposition Jumper on One Module
The Berg type connector to the left of the external power
supply connection has a jumper that you reposition to indicate you are using external power.
We recommend you run input wiring in a conduit separate
from AC power or output wiring and avoid long wiring runs.
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