Absolute Process Instruments DuoPak APD 2036 Snelstarthandleiding - Pagina 2

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Instructions

Electrical Connections

WARNING! All wiring must be performed by a qualified electri-

cian or instrumentation engineer. Consult factory for assistance.

Avoid shock hazards! Turn signal input, output, and power off

before connecting or disconnecting wiring.

Polarity must be observed for signal wiring connections. If the

input and/or output do not function, check wiring and polarity.

Each product is factory configured to your exact input and

output ranges as indicated on the white serial number label.

Check label for module operating voltage to make sure it

matches available power. The power supplies are fuse protect-

ed and the unit may be returned to API for fuse replacement.

Outputs

For milliamp ranges determine if your devices provide power

to the current loop or if the loop must be powered by the APD

module. Typical voltage may be 9-24 VDC at your device's

terminals if it provides power to the loop.

Device for Output Channel 1

Measuring/recording device accepts a

voltage input.

Measuring/recording

device

has

an unpowered or passive mA input.

APD module provides the loop power.

Measuring/recording device has a mA

input and powers the current loop.

Device for Output Channel 2

Measuring/recording device accepts a

voltage input.

Measuring/recording

device

has

an unpowered or passive mA input.

APD module provides the loop power.

Measuring/recording device has a mA

input and powers the current loop.

Input 1, Potentiometer

The potentiometer must be connected to all three signal input

terminals as shown. 0-100% of the potentiometer range must

be used. A stable 1 VDC source to excite the potentiometer.

Voltage drop is measured across the potentiometer, thus allow-

ing any full-range potentiometer to be used.

Potentiometer Input Channel 1

Full scale or high side of potentiometer

Zero or low end of potentiometer

Potentiometer wiper arm

Input 2, AC

Any polarity may be used for an AC input. A transmitter DC

power supply is available at terminals 22 and 23, but is not

commonly used with an AC input.

AC Input Channel 2

Terminal

Device with an AC voltage or

AC milliamp output.

Transmitter power supply.

(+15 VDC)

Module Power Terminals

Check white model/serial number label for module operating

voltage to make sure it matches available power.

When using DC power, either polarity is acceptable, but for

consistency, wire positive (+) to terminal 25 and negative (–)

to terminal 28.

BSOLUTE

Mounting

The housing clips to a standard 35 mm DIN rail. The housing is

IP40 rated and should be mounted inside a panel or enclosure.

1. Tilt front of module down and posi-

tion the lower spring clips against

the bottom edge of DIN rail.

2. Push front of module upward until

upper mount snaps into place.

Removal

Avoid shock hazards! Turn signal

input, output, and power off.

1. Push up on bottom back of module.

2. Tilt front of module downward

to release upper mount from top

edge of DIN rail.

3. The module can now be removed

from the DIN rail.

Terminal Terminal

Calibration

Front-mounted Zero and Span potentiometers for each channel

3 (–)

(+)

can be used to compensate for load and lead variations.

1. Apply power to the module and allow a minimum 30 minute

3 (–)

(+20 V)

warm up time.

2. Using an accurate calibration source, provide an input to

2 (–)

(+)

the module equal to the minimum input required for the

application.

Terminal Terminal

3. Using an accurate measurement device for the output,

7 (–)

(+)

adjust the Zero potentiometer for the exact minimum output

desired. The Zero control should only be adjusted when the

input signal is at its minimum. This will produce the cor-

7 (–)

(+20 V)

responding minimum output signal. Example: for 4-20 mA

output, the Zero control will provide adjustment for the 4 mA

6 (–)

(+)

or low end of the signal.

4. Set the input at maximum, and then adjust the Span pot for

the exact maximum output desired. The Span control should

only be adjusted when the input signal is at its maximum.

This will produce the corresponding maximum output

signal. Example: for 4-20 mA output, the Span control will

provide adjustment for the 20 mA or high end of the signal.

5. Repeat adjustments for both output channels for maximum

accuracy.

Terminal

Output Test Function

(+1 VDC)

When the Test button is depressed it will drive the output with a

known good signal that can be used as a diagnostic aid during

18 (–)

initial start-up or troubleshooting. When released, the output

will return to normal.

Each Test Cal. potentiometer is factory set to approximately

50% output. Each can be adjusted to set the test output from

0 to 100% of the output span. Press and hold the Test button

and adjust the corresponding Test Cal. potentiometer for the

desired output level.

They may optionally be externally wired for remote test opera-

Terminal

tion or a manual override. See wiring diagram at right.

Operation

The APD 2036 accepts one potentiometer input and one AC

voltage or current input and provides two optically isolated DC

voltage or current outputs that are linearly related to the inputs.

Green LoopTracker

each signal is being sensed by the input circuitry of the module.

They also indicates the input signal strength by changing in

intensity as the process changes from minimum to maximum.

If an LED fails to illuminate, or fails to change in intensity as

the process changes, check the module power or signal input

wiring. Note that it may be difficult to see the LEDs under bright

lighting conditions.

Two red LoopTracker output LEDs provide a visual indication

that the output signals are functioning. They become brighter

as the input and each corresponding output change from

minimum to maximum.

For a current output the red LED will only light if the output loop

current path is complete. For either current or voltage outputs,

failure to illuminate or a failure to change in intensity as the

process changes may indicate a problem with the module

power or signal output wiring.

ROCESS NSTRUMENTS, Inc.

Upper Mount

Spring Clips

input LEDs provide a visual indication that

1220 American Way Libertyville, IL 60048

800-942-0315

Phone:

APD 2036

Voltage

Device 1

–

Voltage

Output

Ch. 1

Device 1

–

Loop

Power

Source 1

Source 2

–

Current

Sinking

Output

Ch. 1

Device 1

–

+ 20V

Current

Sourcing

Output

Ch. 1

External

Contacts

for Test

Function

11 12

Channel 1

Output

Loop

Test Cal.

Tracker

Test

Span

Input

Loop

Zero

Tracker

APD 2036

Channel 1

Potentiometer to DC

Isolated Transmitter

Ch. 1

17 Full Scale*

18 Minimum*

19 Wiper Arm

*May be

switched for

reverse output

28 Power AC or DC –

26 Earth Ground

25 Power AC or DC +

To maintain full isolation avoid combining power supplies in

common with inputs, outputs, or unit power.

API maintains a constant effort to upgrade and improve its prod-

ucts. Specifications are subject to change without notice. Consult

factory for your specific requirements.

api-usa.com

Fax: 800-949-7502

Voltage

Device 2

–

Ch. 2

Device 2

–

Ch. 2

Device 2

–

+ 20V

Ch. 2

15 16

Channel 2

Output

Loop

Test Cal.

Tracker

Test

Span

Input

Loop

Zero

Tracker

Channel 2

AC to DC

Isolated Transmitter

AC Input

Ch. 2

AC Voltage or mA

Input

+15 VDC, 25 mA

sensor power

available at

terminal 22