Table of Contents:
Introduction
The vacuum pump system consists of a turbo pump backed by a roots pump. The Leybold TurboVac pump is controlled via a Leybold Turbo.Control controller, which contains a webserver to allow control of the pump via a webpage in a browser. The Leybold EcoDry roots pump is not under remote control; within KPF we turn it on and off via a PDU outlet on the Vac Cart.
The Turbo.Control controller also allows connection of two vacuum gauges; we use both of these ports to connect a low and a high vacuum gauge. These two gauges monitor the vacuum pressure within the pipe going to the main KPF vacuum chamber. They are mounted on the Vac Cart and sit on the Vac Cart side of the main chamber gate valve.
Direct computer control of the TurboVac pump is possible via serial commands, however creating a full KTL dispatcher for the pump was deemed too difficult given the dozens of commands required, as well as the failsafes required to not damage the pump. As such we decided to use the vendor-supplied web-based software to control the pump, which has all the features we need built-in. This webpage also provides pump telemetry, and a KPF KTL dispatcher monitors this webpage and recorders telemetry values to KTL keywords.
Relevant Devices
Description | Qty | Source | Part Number | Notes |
|---|---|---|---|---|
Turbo Pump | 1 | Leybold | LH TurboVac 450iX | |
Turbo Controller | 1 | Leybold | Turbo.Control i | |
Roots Pump | 1 | Leybold | LH EcoDry65 | Slaved to Turbo Pump (no direct control) |
High Vac gauge | 1 | Leybold | PTR 90 N | Combo Pirani and Cold Cathode gauge |
Low Vac gauge | 1 | Leybold | TTR 91 N S | Pirani gauge |
Relevant Functional Block Diagram
This page is focused on the devices in yellow boxes.
Software Actions
Action | Notes | |
|---|---|---|
| 1 | Read Telemetry | Pump and gauge telemetry available through Pump Controller webserver (Leybold turbo.control) |
| 2 |
Required Adjustable Settings
Setting | When Needed | Notes | ||
|---|---|---|---|---|
Build | Observing | Maintenance | ||
N/A | Telemetry only (no control) | |||
Required Telemetry
Parameter | Report Frequency | Purpose | Notes | |
|---|---|---|---|---|
| 1 | Actual Power | Turbo pump health monitoring | Given on webserver status page (and “Data Viewer” page) | |
| 2 | Actual Frequency | |||
| 3 | Bearing Temperature | |||
| 4 | Actual Voltage | |||
| 5 | Gauge 1 Pressure | Vac cart pipe pressure | ||
| 6 | Gauge 2 Pressure |
Relevant Datasheets & Manuals
Description | File | Source | |
|---|---|---|---|
| 1 | EcoDry Roots Pump Manual | ||
| 2 | Turbo.control Gauge and Pump Controller | ||
| 3 | Serial Interfaces for TURBOVAC | ||
| 4 | Pump Power Supply “Brief Instructions” | ||
| 5 | Relay Box manual (Allows Turbo Pump to control Roots Pump) | ||
| 6 | ‘Vacuum Measurement’ brochure containing specs on various gauges, including both of our gauges (PTR 90 N and TTR 91 N S) | ||
| 7 | PTR 90 N Vacuum Gauge ‘Technical Data’ sheet | ||
| 8 | CAD Model for PTR 90 N gauge. | ||
| 9 | Datasheet for TTR 91 N S gauge. Seems a bit outdated, and was downloaded from a vac supply company (not Leybold). However there was nothing on this part number at Leybold (closest was a TTR RNS model, which might be the newer version of our gauge). | http://vacshop.ir/wp-content/uploads/2016/02/vacshop-THERMOVAC_New-TTR91N.pdf |
Relevant Software
Description | File | Notes | |
|---|---|---|---|
| 1 | Vac pump built-in web server | Offers control and (potentially) telemetry | |
| 2 |
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