Brahma 18047051 TGRD71 control box

Brahma TGRD71 18047051 control boxes, based on microcontrollers from the KOMPACT series, are specially designed for efficient control of gas atmospheric burners. These Brahma TGRD71 18047051 burner controllers can be either with or without a fan in the combustion circuit. In addition, they are designed for efficient control of atmospheric oil burners in variable operating conditions. The KOMPACT series, including the TGRD type, provides ignition and flame control functionality, including a built-in high-efficiency electronic ignition transformer. The updated KOMPACT series TGRD type offers additional options and flexibility, which are achieved thanks to a single microcontroller approach.

Main Features

1. Non-volatile or non-volatile blocking:

– In case of non-volatile blocking, restarting the controller is only possible by manually resetting the system.

   – For energy-dependent blocking, the controller is restarted only by interrupting the power supply and subsequent restoration, excluding switching of the heating device.

2. A variety of applications:

   – Suitable for use in combined heating and steam boilers.

   – Hot air generators.

   – Radiation tube heaters.

   – Convector heaters with a fan.

   – Water heaters.

   – Washing machines.

   – Furnaces.

   – Monoblock burners.

3. Compliance with standards:

– The series comply with EN 525, EN 1020 and EN 1319 standards for hot air gas generators.

   – For hot air oil generators, compliance with DIN 4794 standard.

Technical data

• Rated supply voltage: 200÷240V @ 50-60 Hz

• On demand: 100÷120V @ 50-60 Hz

• Maximum power consumption: 50V

• Operating temperature: -20 °C ÷ +70 °C

• Protection: IP00

• Max. Weight: 320g

• Standby/pre-purge time (TW/TP): 5 … 10 s

• Safety time during operation: < 1 c

• Waiting time or industrial purge: s 1 … 240 s

• EV2 opening delay (Tdw, opt. W): 1 … 240 s

• Blocking delay due to flame simulation(Tdk, opt. K): 5 … 60 s

• Blocking in case of failure to close the PA (Tdq, opt. Q): 3 … 120 s

• Blocking in case of failure to close TC (Tdq, opt. Q) (7): 3 s … 30’

• Pre-ignition time(Tj, opt. J): 0 … 60 s

• Time after ignition: 0 … 60 s

• Attempts to restart: 1 … 10

• Lacquer coating: On demand

• Presence of a base:no

• Safety time (ts):10 sec

Constructive

The use of an innovative circuit and surface mounting of components significantly reduces the size of the Brahma TGRD71 relay circuit board. The plastic case, and if necessary, a varnish coating on the printed circuit board, provide reliable protection of the controller from mechanical damage caused by accidents, pollution, dust and environmental influences.

Additional security features include:

– Varistor: serves as protection against peak voltage in the power grid, including atmospheric discharges such as lightning strikes.

– Internal available fuse: Prevents damage to the controller relay in case of short circuit on outputs such as valves, fans and blocking signals.

– Built-in electromagnetic interference filter: reduces electromagnetic interference generated by the ignition discharge.

– Installation of a resistor: connected in series to the lock output signal, prevents possible errors in connecting remote unlock contacts, providing additional protection for the device.

Functions

• EU type certification (CE PIN 0694BP0610) in accordance with the Gas Appliances Directive 2009/142/CE.

• Compliance with the standards EN298:2003 (automatic gas burner control systems), EN676:2003 (automatic supercharged gas burners), DIN 4788 (burners with fan) and EN230:2005 (automatic oil burner control systems).

• UL type certification (file no. MH46742) in accordance with UL 372 and CSA C22.2 No. 199 (American Standard for Automatic Control Systems for Gas and Liquid Fuel Stoves).

• Flame detection based on rectification properties (electrode or UV radiation via FD photodiode.. for gas emissions) or detection of the appearance of visible light (through a photocell of type FC.. or UV radiation through the FD photodiode.. for oil emissions).

• Using microcontroller technology to accurately set ignition timing and playback with or without multiple attempts.

• Built-in electronic ignition transformer with high efficiency and remote control.

• The possibility of direct ignition of the burners or the use of an intermittent or intermittent pilot signal.

• Support for connecting remote signals, locking and resetting.

• Indication of the status of the lock and unlock signals using a multi-color LED on the board.

• Two safety contacts for controlling the gas valve.

• The service life of the electrical resource at high temperatures is more than 250,000 operations.

• The possibility of connecting a resistor (100 ÷ 470 kOhm) to the signal blocking output to prevent damage to the controller in case of accidental entanglement of the blocking wires and blocking signal wires.