AVC-585 Automatic Valve Controller

Description

The 5-1/4” high half rack mount AVC-585 Automatic Valve Controller is designed to automate the valving sequence for fully automatic operation of diffusion/turbo, or cryo pumped high vacuum pumping systems. The controller can be interlocked in the automatic modes to protect the vacuum system to prevent initiation of the start phase until conditions are safe. A manual operating mode is provided to facilitate set-up or service work. The low profile cabinet is suitable for bench top or half rack mounting.

The AVC-585 is powered from an 80-264 VAC, 3 amp source and will handle the three basic electro-pneumatic vacuum valves (roughing, foreline, high vacuum) and a solenoid vent valve in any vacuum system. Switchable between fully automatic or manual control.

Time delay, for sequential valve operations is set with on screen settings that can be changed to match a customer’s requirements.

Forepressure warning, if the fore-pressure rises above a user set-point there is an on screen waring, audible alarm and there is also a relay that is active on the auxiliary connector. This normally open relay can be used to sound an alarm, or, with an additional relay, to turn off the diffusion pump.

A clear and bold schematic of a typical system is on the front panel to assist in tracing the function being performed. In the different modes, color change on the schematic indicate valve status.

The panel meter indicates the station pressure in the chamber and at the foreline/regen line. The sensors are the highly reliable and stable GT-034 thermistor tubes.

Operator-Selectable Phases – Pressing the system stop closes all vacuum valves except the foreline valve on Diffusion/Turbo pump systems, putting the system in a standby condition. Once in the stand by conditions pressing the system vent button then opens the chamber vent valve. The vent valve is closed automatically after a user preset time to conserve backfill gas, an on screen timer show the amount of time.

Features

  • Easy on screen setting menu simplifies setting of the trip points of fore-pressure and vacuum chamber pressure
  • On screen switchable for use with Diffusion/Turbo Systems or Cryo pump operation
  • Adjustable 1-999 seconds auto vent stop output
  • Capable of interlocking with external controls
  • Capable of remote start/stop/vent with user provided switch
  • Log output voltage for both chamber and foreline pressure values
  • Low profile cabinet-suitable for bench top or half panel rack mounting

Mode Selection

On screen mode selection for manual, diffusion/turbo or cyro pumped systems.

Manual Mode

This mode is used when performing maintenance or when operating under exceptional conditions. All valve functions are controlled by the operator alone, using the on screen switches. Safety interlocks are inoperative.

Automatic Mode Diffusion/Turbo

In this mode, the controller programs the vacuum system through the foreline, roughing and high-vacuum phases at the touch of the system start button.

Valves are operated in response to system pressure instead of time. System malfunctions such as leaks, failure of the high-vacuum valve to seal, pump failures, etc. will cause the system to go into a hold condition with the foreline open.

Automatic Mode Cryo

In this mode, the controller programs the vacuum system through the roughing and high-vacuum phases at the touch of the system start button. The foreline valve is used when the system is in regen.

Valves are operated in response to system pressure instead of time. System malfunctions such as leaks, failure of the high-vacuum valve to seal, pump failures, etc. will cause the system to go into a hold condition..

Gauge Specifications AVC-585

Power Input 80-264 VAC, 50/60 Hz
Fuse Type and Rating 3 amp 154 series
Output to Energize Valves Customer supplied voltage (5 A max up to 240 VAC or 5 A @ 30 VDC (20 mA at 24V min load)
Time Delay Adjustment Range All valves 0-999 seconds; auto vent stop 1-999 seconds; external control 0-999 seconds
Range of Pressure Responsive Control Circuits 0-760 Torr
Forepressure Warning 0-760 Torr (relay value is the same as valves)
External Control 0-999 seconds after high vacuum valve opens (relay value the same as valves)
Pressure Sensor Tubes (for Recorder Use) GT-034 (log scaled output)
Dimensions (Front Panel) 5-1/4″ high, 9-1/2″ wide
Chassis Depth 9-3/4″ (allow 3” for connections)

Ordering Information

AVC-585 – 115VAC – 50/60Hz, includes 10′ cable & 2 (034) tubes Part Number 502457-0221
AVC-585 – 115VAC – 50/60Hz, includes 25′ cable & 2 (034) tubes Part Number 502457-0223
GT-034 Thermistor tube Part Number 277289
Cable 10′ – Station 1 Chamber Part Number 502456-11
Cable 15′ – Station 1 Part Number 502456-12
Cable 25′ – Station 1 Part Number 502456-13
Cable 50′ – Station 1 Part Number 502456-14
Cable 100′ – Station 1 Part Number 502456-15
Cable 10′ – Station 2 Foreline Part Number 502456-21
Cable 15′ – Station 2 Part Number 502456-22
Cable 25′ – Station 2 Part Number 502453-23
Cable 50′ – Station 2 Part Number 502456-24
Cable 100′ – Station 2 Part Number 502456-25

Vacuum Port Adapters

KF-16 to 1/8″ FPT KF Part Number 500230-16
KF-25 to 1/8″ FPT Part Number 500230-25
KF-40 to 1/8″ FPT Part Number 500230-40
KF-50 to 1/8″ FPT Part Number 500230-50
CF-16 to 1/8″ FPT Part Number 500231-1
CF-35 to 1/8″ FPT Part Number 500231-2
1″ hole mount to 1/8″ FPT Part Number 500236

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