Absolute Process Instruments API 4008 G A230 Manual de inicio rápido - Página 2

Navegue en línea o descargue pdf Manual de inicio rápido para Instrumentos de medida Absolute Process Instruments API 4008 G A230. Absolute Process Instruments API 4008 G A230 2 páginas. Potentiometer input to dc transmitters, isolated, field rangeable
También para Absolute Process Instruments API 4008 G A230: Manual de inicio rápido (2 páginas)

Imprimir página

Absolute Process Instruments API 4008 G A230 Manual de inicio rápido

Installation and Setup

Precautions

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

cian or instrumentation engineer. See diagram for terminal des-

ignations and wiring examples. Consult factory for assistance.

WARNING! Avoid shock hazards! Turn signal input, output, and

power off before connecting or disconnecting wiring, or remov-

ing or installing module.

Précautions

ATTENTION! Tout le câblage doit être effectué par un élec-

tricien ou ingénieur en instrumentation qualifié. Voir le dia-

gramme pour désignations des bornes et des exemples de

câblage. Consulter l'usine pour assistance.

ATTENTION! Éviter les risques de choc! Fermez le signal

d'entrée, le signal de sortie et l'alimentation électrique avant

de connecter ou de déconnecter le câblage, ou de retirer ou

d'installer le module.

API maintains a constant effort to upgrade and improve its products.

Specifications are subject to change without notice. See api-usa.com for

latest product information. Consult factory for your specific requirements.

WARNING: This product can expose you to chemicals includ-

ing lead, which is known to the State of California to cause

cancer or birth defects or other reproductive harm. For more

information go to www.P65Warnings.ca.gov

Range Selection

See model/serial number label for any applicable options or

custom ranges. Select ranges before installation.

See table below for module output range settings. From the

table, find the switch setting that matches your output range.

Make sure to set the V—I switch for voltage or current output

respectively.

4008 G

Output

Select

Range

Voltage Output

Current Output

A B

0-2 mA

V 0

0-1 VDC

V 8

0-4 mA

0-2 VDC

0-8 mA

V 1

0-4 VDC

0-10 mA

V 9

0-5 VDC

0-16 mA

V 2

0-8 VDC

0-20 mA

V 3

0-10 VDC

2-10 mA

V 6

1-5 VDC

V 7

4-20 mA

2-10 VDC

V 4

±5 VDC

V 5

±10 VDC

Socket and Mounting

Install module in a protective panel or enclosure. Allow space

around module for air flow. Use API 008 or API 008 FS socket.

See specifications for maximum allowable socket voltages. The

socket clips to a standard 35 mm DIN rail or can be mounted to

a flat surface.

Electrical Connections

See model/serial number label for module power requirements,

and any applicable options or custom ranges.

Polarity must be observed for input and out output wiring con-

nections. If the output does not function, check switch settings

and wiring polarity.

BSOLUTE

ROCESS

Signal Input Terminals

The potentiometer must be connected to all three signal input

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

be used. The API 4008 G utilizes a stable 1 VDC source to

excite the potentiometer.

Potentiometer Input

Zero or low end of potentiometer

Potentiometer wiper arm

Full scale or high side of potentiometer

Signal Output Terminals

Polarity must be observed when connecting the signal output to

the load. The positive connection (+) is connected to terminal 7

and the negative (–) is connected to terminal 8.

Note that with a mA current output the module provides power

to the output loop.

For ranges that fall between the listed ranges use the next

highest setting and trim the output signal with the zero and

span potentiometers.

Module Power

Check model/serial number label for module operating voltage

to make sure it matches available power.

AC power is connected to terminals 1 and 3.

For DC powered modules, polarity MUST be observed.

Positive (+) is wired to terminal 1

Negative (–) is wired to terminal 3

Potentiometer Input

Socket top

view

Key down

A B

when

I 0

panel

mounting

I 8

I 1

I 9

Sourcing mA

I 2

output

(+)

(–)

20 V loop power

I 3

I 6

PLC, Display,

I 7

Recorder w.

mA Input

Voltage output

(+)

(–)

PLC, Display,

Recorder w.

Voltage Input

NSTRUMENTS

Terminal

(+1 VDC)

Potentiometer Full Scale

and Minimum may be

switched for reverse

output

AC or DC (–)

Module power

AC or DC

(+)

 * Do not make

connections to

unused terminals!

To maintain full isola-

tion avoid combining

power supplies in

common with input,

output, or unit power.

1220 American Way Libertyville, IL 60048

Phone:

800-942-0315

Fax: 800-949-7502

API 4008 G

Calibration

Input and output ranges, if specified on your order, are factory

pre-configured (at 24°C ±1°C). After the API 4008 G range

switches are set, and the module is installed and powered,

top-mounted Zero and Span potentiometers are available to

fine-tune the module output.

Note: Perform the following calibration procedure any time

switch settings are changed.

1. Apply power to the module and allow a minimum 20 minute

warm up time.

2. Set the input potentiometer to its minimum value to provide

a minimum input to the module.

3. Connect an accurate measurement device to the module

output. Adjust the module's Zero potentiometer for the exact

minimum output desired. The Zero control should only be

adjusted when the input signal is at its minimum to produce

the corresponding minimum output signal. For example: 4

mA for a 4-20 mA output or –10 V for a ±10V output.

4. Set the input potentiometer at its maximum, and then

adjust the module's 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 cor-

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

output signal, the Span control will provide adjustment for

the 20 mA or high end of the signal.

5. Repeat adjustments for maximum accuracy.

Output Test Function

The Test button may be pushed to provide a fixed output when

depressed. This will drive the device on the output side of the

loop (a panel meter, chart recorder, etc.) with a known good

signal that can be used as a system diagnostic aid during initial

start-up or during troubleshooting.

It can be adjusted to vary the output signal from 0 to 100%

of the calibrated output range. When released, the output will

return to normal.

Turn the multi-turn Test Range potentiometer while holding

the Test Switch depressed until the desired output test level

is reached.

Operation

The API 4008 G utilizes a stable 1 VDC source to excite the

potentiometer. This voltage is stabilized against the potentiom-

eter resistance value variations over the entire operating range.

The resulting potentiometer wiper voltage is amplified and

passed through an optical coupler to the output stage where it

is scaled to the desired output range.

The green LoopTracker

input LED provides a visual indication

that a signal is being sensed by the input circuitry of the mod-

ule. It also indicates the input signal strength by changing in

intensity as the process changes from minimum to maximum.

If the 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.

The red LoopTracker output LED provides a visual indication

that the output signal is functioning. It becomes brighter as

the input and the corresponding output change from minimum

to maximum.

For current outputs, 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.

api-usa.com