Absolute Process Instruments AP11420 G Посібник із швидкого старту - Сторінка 2

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Installation and Setup

Precautions

WARNING! All wiring must be performed by a qualified electrician

or instrumentation engineer. See diagram for terminal designa-

tions 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

Alarm Configuration

API 1400 G relay operation is factory configured. The default

configuration is HI alarm normal acting. See model/serial num-

ber label for optional relay configurations.

API 1420 G relay operation is factory configured, but internal

jumpers can be used to modify the alarm type as follows.

1. Unplug the module from the socket.

2. Remove the 4 screws from the module bottom and remove

the plastic case.

3. Unplug the circuit board with the test button from the base.

4. Note location of jumper block at top left of circuit board next

to test button. See diagram at right.

5. Place jumpers as indicated for desired alarm operation.

The standard HI/LO setting is with one jumper across the

two top pins or with no jumper at all. Never place a jumper

across the two bottom pins!

6. Replace board, cover, and screws.

Setpoint 1 = HI

Setpoint 2 = LO

(Standard)

API 1420 G

Setpoint 1 = HI

Setpoint 2 = HI

API 1420 G

API 1420 G Internal Alarm Configuration Jumpers

Socket and Mounting

Install module in a protective panel or enclosure. Allow space

around module for air flow. Use API 011 or API 011 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.

Input

The input is factory configured (at 24°C ±1°C). See the model/

serial number label for input type, range, and options.

Correct wiring of 3-wire RTDs must be observed.

Connect 2-wire sensors to terminals 4 and 5 and run a jumper

wire from terminal 2 to 5.

BSOLUTE

ROCESS

 * Do not make connec-

tions to unused terminals!

To maintain full isolation

avoid combining power

supplies in common with

input, output, or unit

power.

api-usa.com/accessories

for socket information

and dimensions

NO = Normally Open

C = Common

NC = Normally Closed

Relay Output

See wiring diagram for connections. The module does not

provide power to the relay contacts.

Inductive loads (motors, solenoids, contactors, etc.) will greatly

shorten relay contact life unless an appropriate RC snubber

is installed.

Module Power

Check model/serial number label for module operating voltage

to make sure it matches available power.

When using DC power, polarity must be observed. The positive

(+) must be wired to terminal 1 and negative (–) must be wired

to terminal 3.

Setpoint

This multi-turn potentiometer (one for each setpoint on the API

1420 G) allows the operator to adjust the level at which the

alarm is activated. This control is adjustable from 0 to 100%

of the input range.

Deadband

Setpoint 1 = LO

The API 1400 G deadband potentiometer allows the alarm trip/

Setpoint 2 = HI

reset window to be adjusted symmetrically about the setpoint

from 1 to 100% of the span.

The deadband is fixed at 1% of span on the API 1420 G. The API

1420 G A with adjustable deadband option allows deadbands

API 1420 G

to be adjusted symmetrically about each setpoint from 1 to

100% of the span.

Deadband allows the operator to fine tune the point at which

the alarm trips and resets. The deadband is typically used to

prevent chattering of the relays or false trips when the process

signal is unstable or changes rapidly.

Setpoint 1 = LO

Adjustments

Setpoint 2 = LO

To calibrate the alarm section, set the deadband control to the

minimum (counterclockwise). The deadband will be 1.0% of

input span in this case.

API 1420 G

Set the signal source to a reference that represents the desired

trip point.

Adjust the setpoint control to the point at which the relay

changes state from a non-alarm to an alarm condition.

If a larger amount of deadband is desired turn the deadband

potentiometer clockwise. The deadband is symmetrical about

the setpoint; both transition points will change as deadband

is increased.

Alternately set the setpoint and deadband until the desired trip/

reset points are set.

Output Test Function

The functional test button toggles the alarm status independent

of the input when depressed. It verifies the alarm and system

operation. When released, the relay(s) will return to their prior

states. This can be used as a diagnostic aid during initial start-

up or troubleshooting.

NSTRUMENTS

When using a

2-wire sensor

install jumper

3-wire RTD

from terminal 2

to terminal 5

Contact Set 1

Socket

top view

Key down

when panel

mounting

See

NO C NC

Contact Set 2

AC or

DC+

Module power

See module label

for correct power!

1220 American Way Libertyville, IL 60048

Phone:

800-942-0315

API 1400 G, API 1420 G

Operation

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 bi-color alarm LED provides a visual indication of the alarm

status. In all configurations, a green LED indicates a non-alarm

condition and a red LED indicates an alarm condition.

NOTE: Although the API 1400 G has a pair of relays, these

relays will energize and de-energize in unison.

The API 1420 G will accommodate independent relay operations.

High Alarm (H or HH)

The alarm relay changes state when the input exceeds the

deadband trip point. The relay resets when the input drops

below the deadband reset point. For a high alarm, the trip point

is above the reset point.

Low Alarm (L or LL)

AC or

The alarm relay changes state when the input goes below the

DC–

deadband trip point. The relay resets when the input exceeds

the deadband reset point. For a low alarm, the trip point is below

the reset point.

Normal Acting Alarms

Normal acting alarms energize the relay coils in a non-alarm

condition and de-energize them in an alarm condition. This will

create an alarm condition if the module loses power.

No Alarm

GREEN

Relay 1

8 NC

7 Common

6 NO

Relay 2

11 NC

10 Common

9 NO

API 1400 G Alarm States with Normal Action HI Alarm

No Alarm

HI Alarm

GREEN

Relay 1

RED

8 NC

7 Com.

6 NO

Relay 2

GREEN

11 NC

10 Com.

9 NO

API 1420 G Alarm States with Normal Action HI/LO Alarms

AC inductive load

(cos f = 0.4)

DC inductive load

(L/R = 7 ms)

0.5

DC resistive

0.3

load

0.1

3 5 10

Switching Voltage (V)

Relay Contact Ratings

api-usa.com

Fax: 800-949-7502

Power Off

OFF

HI Alarm

RED

Relay 1

8 NC

7 Common

6 NO

Relay 2

11 NC

10 Common

9 NO

LO Alarm

Relay 1

GREEN

Relay 1

8 NC

7 Com.

6 NO

Relay 2

RED

11 NC

10 Com.

9 NO

AC resistive

load

30 50 100 300 500