ESA ESTRO는 공업용 버너의 점화, 감시용으로 입출구에 부착되는 화염조절용 마이크로프로세서로, 총 4가지 버전으로 제공됩니다.
- Estro-A 1단계식 버너용(에어&가스밸브)기기 일반 점화중인 버너의 전자 신호(시그널)형 원거리 수동조절 또는 순차적 조절용입니다.
- Estro-B 2단계식 버너용(pilot와 메인가스벨브)기기, 강력점화중인 버너의 전자 신호(시그널)형 원거리 수동조절 또는 순차적 조절용입니댜.
- Estro-C 1단계식 버너용(단독 가스밸브) 기기, 일반 점화중인 버너의 전자 신호(시그널)형 원거리 수동조절 또는 순차적 조절용입니다.
- Estro-Q 1단계식 버너용(단독 가스밸브)기기, 원거리 순차적 조절용입니다.
모든 버전의 기기에는 에어 셔터, 송풍기, 압력스위치가 설치된 버너의 조절을 위하여 EXP-1 시리즈의 확장카드를 적용시킬 수 있습니다.
ESA ESTRO is a microprocessor operated device, designed
to control gas and oil fired burners, which are
discontinuously operated. This device warrants the safe
operation of the combustion unit at one or two stages
(pilot/main burners), it controls the air flow rate and
allows the detection of flame presence through ionization
(electrodes) or UV radiation (UV-scan). ESA ESTRO is
equipped for serial communication, allowing a remote
burner control and operation. The thermal resistant case
of ESA ESTRO allows its installation on burner proximity,
provided that the environment temperature remains
below 60°C.
APPLICATIONS
One or two stage (pilot/main) discontinuous burners.
Flame detection by means of rod, unirod and UV scan (also combined).
Packaged burners managing a complete ignition cycle (blower, air damper, air pressure switch).
Burners with air valve control for furnace purging, burner ignition and thermoregulation (heating/cooling) via external regulation device.
Combustion plant with burner controller via digital signal or ECS serial communication.
Customized burner operation through programmable expansion cards.
CHARACTERISTICS
MAIN:
■ Voltage supply: 115 Vac or 230 Vac +10 ÷ -15%
■ Frequency: 45÷65 Hz
■ Power supply mode: phase-neutral, non suitable
for phase-phase
■ Neutral type: suitable for ground as well as non
ground neutral connection
■ Power consumption without outlets: 5 VA max
■ Operating temperature: 0÷60 °C
■ Storage temperature: -20÷80 °C
■ Protection class: IP54 (when wiring,
use adequate connectors)
■ Mounting position: any
■ Installation environment: not suitable for ATEX
classified area and corrosive area
■ Case: Thermosetting with fiberglass
■ Size: 200×120×93 mm
■ Weight: 1.300 g
■ Approvals according EN298 and EN230: BOOLXN
programmable
CHARACTERISTICS
INPUT AND OUTPUT CONNECTIONS:
■ Flame detection probe voltage: max 300 Vac
■ Minimum ionization current: 2,4 μA ± 0,3 μA
■ Flame probe current limit: 1 mA
■ Flame signal display: 0 ÷ 90 μA
■ Flame probe type: electrode or UV scan model ESA UV-2
■ Rod or UV scan probe line length: < 30 m
■ High voltage ignition transformer line length: 2 m max
■ Insulation among probe conductors: > 50 MΩ (double-insulation or double-protection cables)
■ Digital input signal voltage: same as supply voltage
■ Digital input power consumption: max 5mA
■ Filter for lock/reset input: RC 100 Ω - 0,47 μF - 250 Vac
■ Output signal voltage: same as supply voltage
■ Current per each output signal: 1.5 A
■ Current per output signals (total): 4 A per 10 sec. / min.
■ Load protection fuse: 4 A fast
■ Device protection fuse: 1 A non replaceable
■ Supply voltage expansion card EXP-2 and EXP-4: 24 Vac, 115 Vac, 230 Vac
■ Supply voltage expansion card EXP-2 and EXP-4: max 5mA
■ Power absorption expansion card EXP-2 and EXP-4: same as supply voltage
■ Output signal voltage expansion card EXP-2 and EXP-4: 4 A (unprotected by inner fuse)
PARAMETERS:
■ Pre-purge time: 0 ÷ 255 s
■ First safety time*: 1 ÷ 25 s
■ Main burner stabilization time*: 0 ÷ 25 s
■ Reaction time*: 1 ÷ 20 s
■ Post-purge time: 0 ÷ 255 s
■ Accepted unlocking: 5 max in 15 min
■ Auto shutoff (can be inhibited)*: 1 minimum in 24 hours
■ Action at missing flame signal: programmable
■ First gas stage actions: programmable
■ Air valve operation: programmable
* These parameters must comply to the norms and directives related to the industrial process wherein ESA ESTRO
is adopted as a burner control device.