background image

 

O

Two Independent Channels with Full Isolation

 

O

Zero and Span for Each Output

 

O

Input and Output LoopTracker

®

 LEDs

 

O

Output Test/Manual Override for Each Channel

 

O

Built-In I/O Power Supplies 

 

Q

Monitor a DC Signal and Position

 

Q

Convert/Isolate Dual Output Transmitters

Applications

Channel 1 DC Input Range

Factory configured, please specify input type and range
Voltage: 

0-10 mVDC to 0-100 VDC 

Bipolar voltage:  ±50 mVDC to ±10 VDC 
Current: 

0-1 mADC to 0-50 mADC, 4-20 mADC

Voltage input impedance: 

200 k

 minimum 

Current input impedance: 

50 

 typical 

Input com. mode rejection:  120 dB minimum 
Current input voltage burden: 1.25 VDC max. at 20 mA
Input loop power supply: 

15 VDC, ±10%, regulated,  

 

25 mADC, may be connected  

 

for sinking or sourcing mA input

Channel 2 Potentiometer Input Range 

Use any 3 wire full-travel potentiometer  
1 VDC excitation provided to potentiometer
Consult factory for other ranges and configurations
Minimum range: 

0-100 

 

Maximum range: 

0-1 M

Input impedance: 

100

 to 1 M

Ω 

minimum 

Input com. mode rejection:   100 dB minimum

LoopTracker

Variable brightness LEDs indicate I/O levels for each channel

Channel 1 and Channel 2 Output Ranges

Factory configured, please specify for each output channel
Voltage: 

0-1 VDC to 0-10 VDC, 10 mA max

 

up to 20 VDC with M19, M29, M39 

Bipolar voltage:  ±1 VDC to ±10 VDC 
Current: 

0-1 mADC to 0-20 mADC, 4-20 mADC 

 

20 V compliance, 1000 

 at 20 mA

Output Calibration

Multi-turn zero and span potentiometers for each output channel  
±15% of span adjustment range typical

Output Characteristics

Linearity:  

±0.1% of span 

Temperature stability: 

Better than 0.04% span/°C 

Output ripple and noise: 

Less than 10 mV

RMS

Isolation

Full 5-way, 1200 V

RMS

 minimum

Response Time

70 milliseconds nominal

Output Loop Power Supplies

20 VDC nominal, regulated, 25 mADC for each output channel 
May be selectively wired for sinking or sourcing mA output

Output Test

Front buttons set each output to test level when pressed 
Each test level potentiometer adjustable 0-100% of span

Installation Environment

Mount vertically to a 35 mm DIN rail 
For use in Pollution Degree 2 Environment 
IP 40 housing, requires installation inside an enclosure 
–10°C to +60°C operating ambient

Connectors

Eight 4-terminal removable connectors, 14 AWG max wire size

Power

85-265 VAC, 50/60 Hz or 60-300 VDC, 6 W maximum 
D versions: 9-30 VDC or 10-32 VAC 50/60 Hz, 6 W maximum

Removable Plugs

Dimensions

1.78" W x 4.62" H x 4.81" D   
45 mm W x 117 mm H x 122 mm D  
Height includes connectors

Sink or Source  

mA Output for  

Each Channel

Output LoopTracker 

LED for Each 

Channel

Adjustable Output 

Test Function for  

Each Channel

Zero and Span for 

Each Channel

Custom I/O Ranges

Description

The APD 2003 DuoPak accepts one DC voltage or current 
input and one potentiometer input and provides two optically 
isolated DC voltage or current outputs that are linearly related 
to the inputs.
The input ranges and the output ranges for each channel are 
independent and can be specified as required. This provides an 
economical two channel solution in one device.
Typical applications include signal conversion, isolation, and 
redundancy (i.e. to prevent failure of the entire loop if one 
device fails), or a combination of these.
Each input signal is filtered, amplified, and then passed 
through an opto-coupler to the output stages. Full 5-way 
isolation (input 1, input 2, output 1, output 2, power) make 
this module useful for ground loop elimination, common mode 
signal rejection, and noise pickup reduction.

I/O Sink/Source Versatility

Standard on the APD 2003 is a 15 VDC loop excitation supply 
for the DC input channel and 20 VDC loop excitation sup-
plies for each output channel. These power supplies can be 
selectively wired for sinking or sourcing allowing use with any 
combination of powered or unpowered milliamp I/O devices.

LoopTracker 

API exclusive features include four LoopTracker LEDs (green 
for each input, red for each output) that vary in intensity with 
changes in the process input and output signals. 
These provide a quick visual picture of your process loop at all 
times and can greatly aid in saving time during initial startup 
and troubleshooting. 

Output Test 

An API exclusive feature includes output test buttons for each 
channel to provide a fixed output (independent of the input) 
when held depressed. 
Terminals are also provided to operate the test functions 
remotely for each channel. This also allows use as a remote 
manual override to provide a temporary fixed output if desired.
The test output level for each channel is potentiometer adjust-
able from 0 to 100% of the output span. The output test greatly 
aids in saving time during initial startup and/or troubleshooting. 

Universal 

Power

Input LoopTracker 

LED for Each 

Channel

®

  Two Channel Signal Converter/Isolator/Transmitter, Factory Ranged 

APD 2003

Channel 1: DC to DC 

Channel 2: Potentiometer to DC

Connect Sink or 

Source mA  

for DC Input

Options—add to end of model number
R1

  Channel 1 I/O reversal (i.e. 20-4 mA out) 

R2 

Channel 2 I/O reversal (i.e. 20-4 mA out) 

R3 

Channel 1 and channel 2 I/O reversal 

M19

  Channel 1 high voltage output >10 V up to 20 V  

M29 

Channel 2  high voltage output >10 V up to 20 V 

M39 

Channel 1 and channel 2 high voltage output 

U

 

Conformal coating for moisture resistance

Accessory—order as separate line item
API BP4

  Spare removable 4 terminal plug, black

How to Order

Models are factory ranged. See I/O ranges above left. 
Ranges and options for each channel must be specified on order

Channel 1 input range 
Channel 2 input range 
Channel 1 output range 
Channel 2 output range

Model

Description

Power

APD 2003

DuoPak 2 channel 

DC-DC, Pot.-DC 

converter/isolator/

transmitter

85-265 VAC, 50/60 Hz or 

60-300 VDC

APD 2003 D

9-30 VDC or 10-32 VAC

Options and Accessories

1    2    3    4

5    6    7    8

9   10   11   12

13   14   15   16

25   26   27   28

29   30   31   32

17   18   19   20

21   22   23   24

See Wiring 

Diagrams on 

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Phone: 

800-942-0315

 

Fax: 800-949-7502

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I/O Setup!

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Made in USA

File E145968

85-265 VAC, 60-300 VDC 

model only

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