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12
MAN0845-04-EN Specifications / Installation
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5/8/2009 Page 1 of 2 ECN # 950
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IN
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1 Specifications
ADC120 ADC220 ADC120 ADC220
Number of
Channels
4 8
Conversion Time
(PLC Update
Rate)
Determined by
Communications
w/OCS
Input Ranges +/-20mA Terminal Type
Screw Type,
Removable
Resolution 16-Bit Storage Temp.
-40° to 85°
Celsius
Operating Temp.
-10° to 60°
Celsius
Input Impedance <50 Ohms
Relative Humidity
5 to 90% Non-
condensing
Linearity +/-0.1%
Dimensions
WxHxD
17.5mm x 100mm x
120mm
0.69” x 3.94” x 4.72”
External Power
Supply Voltage
10-30Vdc Weight 150g (6 oz.)
Required Power
(Steady State)
30mA @ 24Vdc,
typical
Communications
Modbus/RTU
(binary)
RS-485 half
duplex
Required Power
(Inrush)
Negligible
Factory Default
Communications
Parameters
38400 baud, N, 8, 1,
no h/s
Default Modbus ID 1
Isolation
2000Vac for 60
seconds
(Input/Power &
Input/Serial)
Supported
Modbus
Commands
1,2,3,4,5,6,8,15,16
CE & UL
Compliance
See Compliance Table at
http://www.heapg.com/Pages/TechSupport/ProductCert.html
2 Wiring – I/O
SmartMod
20mA Analog Input Module
HE359ADC120 / HE359ADC220
16-Bit Resolution
Dimensions in inches are 0.69”W x 3.95”H x 4.72”D
Note: Number of I/O terminal connections vary from model to model
I/O
RS-485
DC IN
Pin # ADC120 ADC220 Pin # ADC120 ADC220
1 INPUT 0+ INPUT 0+ 9 COM INPUT 4+
2
ANALOG
COMMON
ANALOG
COMMON
10 N.O.
ANALOG
COMMON
3 INPUT 1+ INPUT 1+ 11 INPUT 5+
ANALOG
COMMON
ANALOG
COMMON
4 12 INPUT 0
ANALOG
COMMON
5 INPUT 2+ INPUT 2+ 13 INPUT 1 INPUT 6+
ANALOG
COMMON
ANALOG
COMMON
14 6 INPUT 2
ANALOG
COMMON
7 INPUT 3+ INPUT 3+ 15 INPUT 3 INPUT 7+
8
ANALOG
COMMON
ANALOG
COMMON
16 COM
ANALOG
COMMON
D-
D+
GND
INIT
A
B
C
D
V-
V+
I
J
10-30Vdc
Wiring DC IN
Wiring RS-485
Notes:
Both ends of the RS-485 network should be terminated with a 100ohm, 1/4W, 1% resistor. Many OCS
controllers feature dip switches or jumpers which enable appropriate termination if the OCS is located on
a network end.

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