51
Chapter 7. Specification
Item
Description
Application
Gas- or oil-burning combustion equipment
Compatible flame detector
Model AUD300C/500C UV flame detector or flame rod
Sequence
Sequence timing
Ignition trial:
Selectable by model No.
Pilot only (Hi solenoid valve ignition standby)*
1
: 7.0±1.0 s
Main trial (Hi solenoid valve ignition)*
1
:
Selectable by model No.
Flame failure response time
Model AUD300C/500C UV flame detector: 2 s max. or 4 s max. when flame
voltage is 3 V
Flame rod:
4 s max. when flame voltage is 2 V
Reset timing
1 s or longer (reset switch or contact reset input*
3
)
Alarm detection timing
False flame:
5 s
Interlock error: 1 s or shorter
Lockout
Lockout requiring manual reset
Operation at ignition failure
Lockout
Operation at flame failure
Lockout
Electrical
specifications
Supply power rating
100/200/120/230 V AC, 50/60 Hz
Allowable supply voltage
85 to 110 % of rated power
Power consumption
15 W max. (AUR455C)
10 W max. (AUR455B)
Dielectric strength
1500 V AC for 1 min or 1800 V AC for 1 s
Between each terminal and ground (the DIN rail clamp), except for flame
detector connection terminals (terminals 14–15 and 16–17)
Insulation resistance
50 MΩ min. with a 500 V DC megger
Between each terminal and ground (the DIN rail clamp), except for flame
detector connection terminals (terminals 14–15 and 16–17)
Contact rating
Ignition transformer:
300 VA
Pilot valve (Lo solenoid valve)*
1
: 200 VA
Main valve (Hi solenoid valve)*
1
: 200 VA
Alarm:
75 VA
Event output*
2
30 mA max.
Model AUD300C/500C UV flame detector
Flame rod
Flame
detection
level
Flame establishment
1.5–4.5 V DC
1.5–4.5 V DC
Flame out detection
0.0–0.6 V DC
0.0–0.2 V DC
Flame
voltage
output
Recommended flame voltage
Stable 2.0 V DC min.
Stable 2.0 V DC min.
Flame voltage output range
0.0–5.0 V DC
0.0–4.5 V DC
Input
Start, interlock, contact reset
Each input is a non-voltage contact input, with allowable contact resistance of
500 Ω max.
Service life
7 years or 100,000 relay operations (at 25 °C, room temperature, rated power)
Operating
conditions
Ambient temperature
Separately mounted unit: −20 to +60 °C
Gang mounted units: −20 to +45 °C
Ambient humidity
10–90 % RH (without condensation)
Vibration resistance
0–3.2 m/s
2
(10–150 Hz, 1 octave/minute, 10 cycles, in each of XYZ directions)
Shock
0–9.8 m/s
2
Mounting angle
Reference plane ±10°
Dust
0.3 mg/m
3
max.