ATech Machine ZETA-02 A Guía de instalación descargar pdf (Pagina 35)

Chapter 1. Installation 29

Configuring Electronic Viscosity (EV)

Before You Start

¥ If you configured active damping (see procedure above), leave the DACTDP setting set at the

value you chose. You do not need to disable active damping while you configure EV.

¥ Couple the motor to the load (see pages 24-25 for details). EV must be configured

under the normal mechanical operating conditions for your application.

¥ Record the DELVIS command setting. The procedure below helps you identify the

appropriate set-up command (DELVIS) that will prepare your system for optimized

performance. DELVIS is not saved in non-volatile memory. Therefore, you should write down

this command as you qualify it in this procedure, then place it in a program. Page 31 shows

an example of how to place DELVIS in a set-up (STARTP) program (a set-up program executes

user-specified commands that establish power-up operational defaults for your application).

Step 1

Verify correct motor-to-ZETA6104 matching. See Matching the Motor to the

ZETA6104 on page 22. To be fully effective, the active damping circuit requires proper

matching. If you are replacing a component (new ZETA6104 or motor) in an existing

application, you must rematch your system.

Step 2

Make a baseline move with EV disabled. This is your baseline move. Notice the

sound, amount of motor vibration, perceptible ringing, etc. This move shows how your

system operates with EV disabled. Each time you adjust the DELVIS setting (in steps 3 & 4),

you will compare results against this baseline move.

1. Issue the DELVIS¯ command to disable active damping.

2. Make a move that is representative of your application, with similar velocity and

acceleration. The velocity must 3Êrps or less, in order for the ZETA6104 to activate EV.

WARNING

Make sure that causing motion will not damage equipment or injure personnel.

The following six commands illustrate a simple incremental point-to-point move:

MC0 ; select the preset positioning mode

MA0 ; select the incremental preset positioning mode

A10 ; set the acceleration to 10 revs/sec/sec

V2 ; set the velocity to 2 revs/sec/sec

D250000 ; set the distance to 250,000 steps, equal to 10 revs

GO ; initiate the move

; **************************************************************

; * NOTE: To stop a move in progress, issue the !S command. *

; * To repeat the move, issue the GO command. To reverse *

; * direction, issue the D~ command and the GO command. *

; **************************************************************

Step 3

Make a move with EV enabled. Compare the results with the baseline move.

1. Issue the DELVIS1 command to enable EV.

2. Make a move that is representative of your application. Use the same motion

parameters that you set up in step 1. If you have not changed these settings, simply

issue the GO command.

Step 4

Find the ideal EV setting. Continue to increase the DELVIS setting by single

increments (the maximum setting is DELVIS7), and executing a move. Repeat this step

until you find the setting that gives the best performance. You can try all seven settings.

Incorrect settings will not cause damage.

During a repetitive move, you can change the setting Òon the flyÓ (while the move is in

progress) if you precede the DELVIS command with a Ò!Ó (e.g., !DELVIS2). This allows

you to immediately compare two different settings.

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ATech Machine ZETA-02 A Guía de instalación Pagina 35

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