Absolute Process Instruments DuoPak APD 2015 D 매뉴얼 - 페이지 2

{카테고리_이름} Absolute Process Instruments DuoPak APD 2015 D에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Absolute Process Instruments DuoPak APD 2015 D 2 페이지. Two channel signal converter/isolator/transmitter

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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, Temperature

The sensor type and temperature range are factory configured.

See the model/serial number label for sensor type and range.

Temperature Input Ch. 1

Term.

Two wire RTD or thermistor

Signal –

Three wire RTD

Signal –

Input 2, Bridge, Strain Gauge, Load Cell

Refer to wiring diagram at right and strain gauge manufac-

turer's data sheet for wiring and color-coding. Polarity must

be observed when connecting input. Sensor shield wire (if

equipped) should be grounded at one end only.

The excitation voltage is adjustable and should be set to match

the sensor manufacturer's recommendations.

CAUTION: Never short the excitation leads together. This will

cause internal damage to the module.

Bridge Input Channel 2

– Terminal + Terminal

Strain gauge signal input

Excitation voltage

22 (–)

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.

Calibration

Terminal Terminal

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

warm up time.

3 (–)

(+20 V)

2. Using an accurate voltmeter on terminals 22 and 24 adjust

the excitation voltage potentiometer to the strain gauge

2 (–)

(+)

manufacturer's recommended value.

Terminal Terminal

3. Using an accurate calibration source, provide an input to the

module equal to the minimum input required for the application.

7 (–)

(+)

4. Using an accurate measurement device for the output,

adjust the Zero potentiometer for the exact minimum output

7 (–)

(+20 V)

desired. The Zero control should only be adjusted when the

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

6 (–)

(+)

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

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

or low end of the signal.

5. 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

Term.

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

Jumper

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

18 & 19

Signal

6. Repeat adjustments for both channels for maximum accuracy.

Exc.

Signal

Output Test Function

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

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-

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

Operation

(+)

23 (–)

The APD 2015 accepts one RTD or thermistor input and one

strain gauge input and provides two optically isolated DC volt-

(+)

age 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.

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. Note that it may be difficult to

see the LEDs under bright lighting conditions.

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 2015

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

Excitation

Output

Loop

Test Cal.

Tracker

Test

Span

Input

Loop

Zero

Tracker

APD 2015

Channel 1

RTD to DC

Isolated Transmitter

Ch. 1

3-Wire Input

See manufacturer's

wiring designations.

Shield wires should

Ch. 1

be grounded at one

2-Wire Input

Jumper 18 & 19

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

Strain Gauge to DC

Isolated Transmitter

23 24

Strain

gauge

specifications for

end only.