ACC Series - Auto Equalizer Controller

Product Code: ACC.1, ACC.2 & ACC.3
ACC Series - Auto Equalizer Controller
  • Description and Uses
  • Installation Sheets & Templates

ACC Series - Auto Equalizer Controller

ACC series Auto Equalizer controllers provide the requisite number of electrically controlled pneumatic circuits to suit the system to be controlled.

For example, a two door system (i.e. two single doors or two pairs of doors) will contain two separately switched valves - controlling air flow to the doors. System timing is performed by the controller. Each pneumatic circuit can be adjusted for a hold open time, normally up to 30 seconds although this can be increased at order placement if required.

Air pressure regulation and filtration is performed at the compressor.

Pneumatic connections use standard push-in fittings and tubing leading from the compressor, to the ACC controller, to the Auto Equalizer.  A package of push-in tee,Y and in-line connectors can be supplied with each controller to simplify installations.

Application & Location

Locate the ACC controller accordingly to minimize the slight exhaust noise when doors close. Additional air line can be utilized to direct the exhaust away from the controller if necessary.

ACC-1 controllers accommodate one door or one pair of doors.

ACC-2 controllers accommodate two doors or two pairs of doors.

ACC-3 controllers accommodate three doors or three pairs of doors.

All ACC-1, .ACC-2 & ACC-3 controllers incorporate 12Vdc 2 Amp power supplies and can power miscellaneous access control accessories used in Auto Equalizer systems.

Features & Benefits

  • Continuously rated – The output current is continuously drawn from the power supply under specified conditions
  • Voltage regulated to correct output for battery charging – All power supplies will maintain an output voltage to within specified limits under varying conditions of input line and output load.
  • Fire relay standard on all power supplies – Electrically locked doors on escape routes will ‘fail safe’ in emergency situations
  • Output is current regulated – If overloaded, output shuts down until cleared
  • Fused – Protects batteries (if fitted) from overload
  • Metal enclosure with 20mm conduit knockouts – For ease of installation

Custom built controllers can be designed to accommodate multiple door systems. There is no restriction on the number of doors within an Auto Equalizer system although it should be borne in mind that the compressor capacity must be chosen carefully to suit the necessary number of doors and expected traffic levels.

Air Flow Requirements

  • Relcross compressors are capable of providing pressures up to 120 psi.
  • Relcross controllers operate at between 80 psi minimum to 100 psi maximum.
  • Regulated air output, up to 80 psi, is required for Auto Equalizers.
  • Auto Equalizers require approximately 14 litres per minute airflow in heavy traffic situations.

How to Specify or Order

ACC.1 Controler - One Door/One Pair of Doors
ACC.2 Controller - Two Doors/Two Pairs of Doors
ACC.3 Controller - Three Doors/Three Pairs of Doors


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