Single and Multizone Controller for Glasshouses

Heron’s Environmental Controllers offer a full solution to controlling temperature within a glasshouse environment.

  • Up to 6 vents can be controlled
  • Use separate thermal and shading screens or one combined screen
  • Operate a hot water motorised valve and local circulating pump
  • Operates two heaters: a main and a back up heater
  • Can operate two cooling fans and one circulating fan
  • Up to four control periods
  • Integrate with Heron’s full range of sensors

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Description

Heron’s Environmental Controllers have an extensive range of features that can be tailored to your needs. Heron Environmental Controllers are available as either single or multi-zone controllers.

  • Single zone controller – 8 or 16 outputs
  • Multi-zone controllers consist of base and zone modules.
  • Base and zone modules – 8 or 16 outputs.
  • Maximum 8 zone modules can be added to 1 base module.

OUTPUTS

  • All outputs are general purpose.
  • Outputs are configured at installation to perform the required control function, e.g. heater output, vent output.
  • Vents, screens and motorised valves require two outputs, open and close.
  • One alarm output is available for each zone. The alarm output is activated on high temperature, low temperature, sensor fault, zone fault.
  • All outputs are 24V AC (to operate 24V AC relays).
  • The total output current is 1.0 Amp per module.
  • All outputs are protected with electronic overload cut-out.
  • Output current is measured for diagnostic display purposes.
  • All outputs are protected against electrical surges exceeding ANSI C62 surge suppression standards.
  • Designed to operate in an industrial environment. High electrical noise immunity, can withstand a 2.5KV spike.

Inputs—Base Module

  • Digital input for inside temperature and/or humidity.
  • Digital input for pipe temperature or boiler alarm.
  • Digital input for Heron Weather Station.
  • One data connector to connect PC and GSM mobile phone module.

Inputs—Remote Zone Module.

  • Digital input for inside temperature and/or humidity.
  • Digital input for pipe temperature or boiler alarm.

Sensors

  • All sensors connect via “Heron digital link”.
  • The Digital link does not require special cable.
  • Sensors can be connected up to 200m from the base module.
  • Inside temperature sensor range 0 – 500C (+/- 0.20C).
  • Outside temperature sensor range -10 – 500C (+/- 0.20C)
  • Humidity sensor range 0 – 95% (+/- 3%).
  • Wind speed 0 – 70mph (+/- 5mph).
  • Light sensor range 0 – 2000W/m2 (+/- 8W/m2).

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