Ver.1.10
ADI16-4(FIT)GY
3
Current source connection examples
This section gives examples of connecting analog input signals from an
external device to the Module using a flat cable and a shielded cable.
The following example uses a flat cable to connect the Module to an
external device.
Connect the [+] and [-] analog input channels of the Module to the
positive and negative outputs of the current source, respectively. Also
connect the analog ground of the Module to the ground of the signal
source.
Note also that, when there are more than one current source, no
potential difference must exist between their respective GND points.
The ADI16-4(FIT)GY is isolated between its internal CPU and the external
device but not between the analog input channels and thus uses a
common analog ground.
If an affecting potential difference exists between the channels, insert an
isolator such as an isolating transducer between the channels.
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Converted data is undefined with no analog ground connected.
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If the connection cable is affected by noise, the analog input can be inaccurate. Route the connection cable
apart from noise sources.
-
If the connecting cable is affected by noise, accurate analog input may not be made. To secure the accuracy,
place the connecting cable far from the source of the noise and put a laminated ceramic capacitor on the
connector of the module.
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The analog signal input to the [+] and [-] inputs must not exceed the maximum input voltage with reference to
the analog ground of the module. Exceeding the input voltage can damage the module.
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Converted data is undefined when either of the [+] and [-] input terminals is left unconnected. Connect both
of the [+] and [-] input terminals of the channel not connected to the signal source to the analog ground.
Setting a Device ID
The controller module distinguishes and keeps track of the modules that
are connected to it by assigning device IDs to them. Each module,
therefore, should be assigned a unique ID.
A Device ID can be assigned in a 0 to 7 range, so that a maximum of
eight modules can be distinguished.
Setup Method
A device ID can be set by turning the rotary switch on the device face.
To set a device ID, turn the switch knob.
Range Setting Switches
Set the voltage input or current input range setting depending on the
measurement target. The input range is common to all channels; it
cannot be set for each of them and must not be set to an invalid range.
Setup Method
To set the voltage or current input, use the corresponding DIP switch on
the module face.
See the following sketches for reference to set each DIP switch.
CAUTION
Device
ID
0
4
0
4
6
2
5
1
3
7
Factory settings:
(Device ID = 0)
RANGE
RANGE
Voltage input(Default)
Current input
