Edwards EXT75DX User Manual

B722-40-880 Issue F
Page 42 © Edwards Limited 2013. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Operation
4.1.6 Timer setting and options
Refer to Section 1.4.3 for a full description of Timer functionality.
The time-out period is a user-configurable option and can be set to any value from 1 to 30 minutes. When the pump
is shipped, it is configured with a default time-out period of 8 minutes.
To change the Timer setting, send the following command (where the characters 'd' represent the time-out period in
minutes):
The reply will be as follows:
The Timer setting is now stored in memory within the DX pump.
To check what time-out period is set, send a query as follows:
The reply will be as follows:
The Timer is permanently enabled during ramp-up, however it is optional whether to have it enabled at other times.
When the pump is shipped, the Timer is enabled by default.
To disable the Timer, send the following serial command:
The reply will be as follows:
The state of the Timer option is stored in memory within the DX pump.
To enable the Timer again, send the following serial command:
The reply will be as follows:
To check whether the Timer is enabled or disabled, send the following query:
The reply will be as follows (where d=0 means disabled and d=1 means enabled):
Command ! S
8 5 4spd dcr
Reply * S 8 5 4sprcr
Command ? S 8 5 4cr
Reply = S 8 5 4spd dcr
Command ! S 8 7 0sp0cr
Reply * S
8 7 0sprcr
Command ! S
8 7 0sp1cr
Reply * S
8 7 0sprcr
Command ? S
8 7 0cr
Reply = S
8 7 0spdcr

Edwards EXT75DX Specifications

General

Brand	Edwards
Model	EXT75DX
Category	Water Pump
Language	English

Summary

Introduction to Turbomolecular Pumps

Scope and Definitions

Defines the manual's scope, purpose, and key terminology for turbomolecular pumps.

General Pump Description

Provides an overview of the DX Compound Turbomolecular Pumps and their basic operational principles.

Drive Electronics Overview

Explains the function and safety features of the pump's integrated drive electronics (Podule).

Technical Data and Specifications

General Specifications and Media Handling

Details pump specifications, pumping media compatibility, and fluid handling requirements.

Electrical, Interface, and Environment Data

Covers electrical requirements, logic interface, indicators, and operating/storage environment conditions.

Pump Installation Procedures

Unpacking and Inspection

Procedures for unpacking, checking components, and initial inspection of the pump.

System Connections and Mounting

Guides for connecting the pump to the vacuum system and mechanical fixing procedures.

Control Interface Modes

Explains parallel and serial interface modes for pump control and monitoring.

Venting, Cooling, and Bakeout Procedures

Instructions on venting options, cooling methods, and bakeout processes for the pump.

Pump Operation and Configuration

Serial Command Configuration

Using serial commands to configure pump settings like power limit, speed, timer, and addresses.

TIC Configuration and Operation

How to configure and operate the pump using Edwards TIC controllers or PC software.

Start-up, Basic Operation, and Monitoring

Steps for pump start-up, parallel/serial operation, and monitoring system parameters.

Special Operation Conditions

Handling extreme conditions like high pressure, temperature, over-speed, and electrical supply failure.

Maintenance and Troubleshooting

Routine Maintenance and Cleaning

Guidance on bearing maintenance, rotor life, and external surface cleaning procedures.

Troubleshooting and Error Codes

Diagnosing faults using status LEDs, error codes, and system status words for problem resolution.

Storage and Disposal Guidelines

Pump Storage Guidelines

Procedures for storing the pump correctly to maintain its condition and performance.

Safe Disposal Procedures

Instructions for safe and environmentally compliant disposal of the pump and accessories.

Service, Spares, and Accessories

Service and Parts Information

Information on Edwards service centers, spare parts, and returning pumps for service.

Cooling, Heating, and Venting Accessories

Details on optional accessories like coolers, bakeout bands, and venting components.

System Interface and Control Accessories

Information on interface plugs, TIC controllers, and PC software for pump integration and control.