Download Analog Input Module

Analog Input Module
DESCRIPTION
Product Specifications
and Installation Data
HEC-ADC-40
The Horner Electric Analog Input Module HEC-ADC-40 is compatible with the Reliance Shark PLC. It provides 4
channels of 12-bit (plus sign) input, and each channel may be configured for 0-10V or 4-20mA analog inputs.
Each channel converts an analog signal into a digital value of 0-4095, and that value is placed directly in the Shark
I/O table as a word input. There are four word inputs required per module, one per channel. The analog input
module may be placed in any slot of any Shark rack.
SPECIFICATIONS
Specification
Voltage
Current
Specification
Voltage
Current
Power Consumption
100mA @ 5VDC
Digital Filtering
1 to 255 samples/update
Number of Channels
4
Analog Filtering
approximately 1kHz*
4, 16-bit (i.e. 0-1 thru 14-15)
Input Impedence
PLC Input Words Required
PLC Output Words
Required
Measurable Input Range
1, 8-bit (i.e. 200)
0--10.24V
4-20.38mA
Resolution
12-bits
Accuracy
+/- 2 counts
Bus Isolation
none
>200Mohms
100ohms
Maximum Voltage Input
+15VDCC
A/D Conversion Type
Integrating
A/D Conversion Time
45 channels per second
Operating Temperature
0 to 60°C (32 to 140°F)
Relative Humidity
5% to 95% non-condensing
Installation Hints
WIRING
þ Wiring should be routed in its own
conduit. Shielded, twisted wiring
offers the best noise immunity.
þ If shielded wiring is used, a good
earth ground connection (on one
end only) is critical. The frame
ground (FG) terminal may be used
as the shield ground point.
þ The PLC power supply radiates a
significant amount of noise. The
analog input module should be
physically located in a slot as far
away from the power supply as
possible.
þ Connect a 14 gauge or larger
conductor between the module FG
terminal and the Shark Rack
frame ground terminal.
MAN0180-01
HARDWARE SETUP
JP1
through
JP4
Jumper
Function
Setting
Hardware Watchdog
Factory Set
JP1
Chan. 0, 0-10V/4-20mA
JP2
Chan. 1, 0-10V/4-20mA
Jumper
Function
Setting
JP7
PLC Select
Factory Set
See Module
JP3
Chan. 2, 0-10V/4-20mA
See Module
See Module
JP4
Chan. 3, 0-10V/4-20mA
See Module
Top Board
JP8
Bottom Board
Input Words
Input Words
PLC INTERFACE
Units
4, 16-bit (i.e. 0-1 thru 14-15)
A/D Counts
Data Format
bits 1-12 data, bit 16 sign
Data Range
0-4095
Voltage
Conversion
V = counts x .0025
Current
Conversion
mA = (counts x .004) + 4
Output Words
Output Words
1, 8-bit (i.e. 200)
Units
Samples/Update
Legal Range
0 to 255
100
90
80
70
60
50
40
30
20
10
0
Digital Filtering. The Analog Input Module features selectable
digital filtering, a technique whereby A/D conversions are averaged before being written to the PLC, enhancing signal stability.
The effect of digital filtering on module response to a change in
the analog input signal is illustrated in the above chart. The
digital filtering level is set by setting the first module's output word
to a value of 0-255. Legal values are 1-255 samples/update, or
0, which is sets the factory default of 4 samples/update.