Category: A-B

The 1747-AENTR in a Logix System

In this example, the I/O modules communicate with the controller through the

1747-AENTR adapter. The controller can produce and consume tags to the I/O.

Configuration of devices and the network is done through the personal

computer running the controller and configuration software.

Diagnostic Indicators The module has the following diagnostic indicators:

• Link 1 and Link 2 status indicator

• Module indicator

• 4-character status display

What the Adapter Does The 1747-AENTR EtherNet/IP adapter performs the following primary tasks:

• Control of real-time I/O data (also known as implicit messaging) – the

adapter serves as a bridge between I/O modules and the network

• Support of messaging data for configuration and programming

information (also known as explicit messaging)

DualControl (Power Bridge Warm Backup)

The EX2100e Regulator system is available in a warm backup (WBU) configuration,

which includes dual exciter control I/O and protection. The control includes M1 (Master

One) and M2 (Master Two), with two IGBT bridges that can accept separate or shared ac

input power. The control configuration can also share a common dc output circuit to the

exciter field through the transfer module. M1 and M2 are independent controls, each with

automatic and manual regulator functions. Either M1 or M2 can control bridge firing, as

determined by the operator. In the WBU configuration, M1 controls bridge #1. and M2

controls bridge #2.

To process application software, two independent Universal Controller Stand-alone Board

Version B (UCSB) controllers, with separate PCMs and an output selector module (SCM

or TCM), provide the dc output current for the exciter field (or SCTcontrol winding).

The active power bridge receives the gating commands from the active control (M1 or

M2), and supports the full-field voltage and current needs of the exciter field while the

backup power bridge’s gating circuit is inhibited. The operator has full control to select

which of the dual power bridges is active or inactive. Bi-directional, bumpless transfer

between active and inactive bridges is standard. The active master can also self-diagnose

a failure or missed operation and activate the backup control and power bridge without

operator intervention.

Checking Out the Wiring and Grounding

Repeat this procedure to check out each of the four axis loops

connected to the IFM terminal block.

ATTENTION: Be sure to remove all power to the SLC processor,

LDT, valve and pump beforehand.

1. Disconnect the LDT connector at the head end.

2. Disconnect the connector to the IFM terminal block.

3. Turn ON the power supplies for the LDT and SLC processor, and

check the LDT connector and IFM terminal block for:

• +15V dc

• PS common

• –15V dc

4. Observe that the module’s fault LED indicates Green.

5. Verify continuity between IFM COM terminal (50) and each of:

• shield of the amplifier output cable to the valve

• output common on

Output Polarity

In most hydraulic systems, the actuator extends (with increasing

LDT counts) when a positive voltage is sent to the output. The

extend direction is defined as the direction that causes the LDT to

return increasing counts moving away from the head.

You can make these selections in the Config word that affect output:

• To generate a positive drive output (0-10V dc) regardless of move

direction, you can select Absolute Mode.

• To extend the actuator by sending a negative voltage to the

output, you can select Reverse Drive Mode.

For additional information on the Configuration word, select that

subject in Help Topics.

Repeat this procedure to check out each of the four axis loops

connected to the IFM terminal block.

How Does It Work?

Monitoring Axis Position

The module has four LDT inputs. You configure each axis for an LDT

with a Pulse Width Modulated output (DPM) or a Start/Stop output

(RPM) by changing axis configuration parameters.

Controlling Axis Output

The module is a targeting controller: every two milliseconds its microprocessor

updates TARGET POSITION and target SPEED values. For

point-to-point moves, TARGET POSITIONS are generated so that

resulting speed, accelerations, and decelerations follow either a

trapezoidal or s-curve profile.

The MODE, ACCELERATION, DECELERATION, SPEED, and

COMMAND VALUE (requested position) are used to generate the

profile. You send these command words to the module through the

processor’s output image table. You may change them “on-the-fly“

while the axis is moving.

Why Use This System?

Because you can interact quickly and easily with the module’s control of

axis motion via the Hydraulic Configurator, this control system has

these benefits:

• faster setup and tuning of axes – the Hydraulic Configurator lets you

quickly set up and tune each axis independent of your ladder program.

• reduced cycle time – you can increase axis speed for faster operation

• smoother operation for longer machine life – you can profile accelerations

and decelerations of the hydraulic actuator to limit pressure spikes

• faster change-over to new parts – you can store setups (configuration

parameters) for quick an accurate change-over between parts

The module compares ACTUAL POSITION with TARGET POSITION to

determine position error. Every update, it uses the position error to adjust

drive output. PID gains are adjustable and can be applied selectively.

The module also provides two different feedforward algorithms;

EXTEND/RETRACT FEEDFORWARD, and EXTEND/RETRACT

ACCELERATION FEEDFORWARD. These feedforward terms provide

additional drive output to help the axis follow the target, freeing the

PID loop to correct for system nonlinearity and changes in load.

WARNING !

DANGER D’EXPLOSION

• Coupez l’alimentation ou vérifiez que l’environnement est

classé non dangereux avant de débrancher l’équipement.

• Coupez l’alimentation ou vérifiez que l’environnement est

classé non dangereux avant de débrancher les connecteurs.

Fixez tous les connecteurs externes reliés à cet équipement

à l’aide de vis, loquets coulissants, connecteurs filetés ou

autres moyens fournis avec ce produit.

• La substitution de composants peut rendre cet équipement

impropre à une utilisation en environnement de Classe I,Division 2.

• Le câblage doit être conforme à l’article 501-4(b) du code

national de l’électricité aux Etats-Unis et aux réglementations locales en vigueur.

Environnements dangereux

Les produits marqués « CL 1, DIV 2, GP A, B, C, D » ne conviennent qu’à une

utilisation en environnements de Classe I, Division 2, Groupes A, B, C, D

dangereux et non dangereux. Chaque produit est livré avec des marquages sur sa

plaque d’identification qui indiquent le code de température pour les

environnements dangereux. Lorsque plusieurs produits sont combinés dans un

système, le code de température le plus défavorable (code de température le plus

faible) peut être utilisé pour déterminer le code de température global du système.

Les combinaisons d’équipements dans le système sont sujettes à inspection par les

autorités locales qualifiées au moment de l’installation.

• La substitution de composants peut rendre cet équipement

impropre à une utilisation en environnement de Classe I,Division 2.

• Le câblage doit être conforme à l’article 501-4(b) du code

national de l’électricité aux Etats-Unis et aux réglementations locales en vigueur.

Hazardous Location Considerations

Products marked CL1, DIV 2, GP A, B, C, D are suitable for use in Class I, Division

2, Groups A, B, C, D or nonhazardous locations only. Each product is supplied with

markings on the rating nameplate indicating the hazardous location temperature

code. When combining products within a system, the most adverse temperature

code (lowest T number) may be used to help determine the overall temperature

code of the system. Combinations of equipment in your system are subject to

investigation by the local authority having jurisdiction at the time of installation.

WARNING !

EXPLOSION HAZARD

• Do not disconnect equipment unless power has been

removed or the area is known to be nonhazardous.

• Do not disconnect connections to this equipment unless

power has been removed or the area is known to be

nonhazardous. Secure any external connections that mate

to this equipment using screws, sliding latches, threaded

connectors, or other means provided with this product.

• Substitution of components may impair suitability for Class I, Division 2.

• All wiring must comply with N.E.C. article 501-4(b).

Overview

Install your power supply using these installation instructions. The only tools you

require are flat head (1/8”) and Phillips head (1/4”, #2) screwdrivers.

ATTENTION !

Electrostatic discharge can damage integrated circuits or

semiconductors if you touch backplane connector pins. Follow

these guidelines when you handle the power supplies.

• Touch a grounded object to discharge static potential.

• Do not touch the backplane connector or connector pins.

• Do not touch circuit components inside the power supply.

• Use a static-safe work station, if available.

• Keep the power supplies in their static-shield packaging

when not in use.