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Chapter 7. Specifications
Item Description
Application Gas- or oil-burning combustion equipment
Compatible flame detector Model AUD300C/500C UV flame detector or flame rod
Flame failure response time Model AUD300C/500C UV flame detector Flame rod
2 s max. or 4 s max.
(when flame voltage is 3 V)
4 s max.
(when flame voltage is 2 V)
Reset timing 1 s or longer (reset switch or contact reset input*)
Fault stop Fault stop requiring manual reset
Electrical
specifications
Supply power
rating
100/200/220 V AC, 50/60 Hz
Allowable supply
voltage
85 to 110 % of rated voltage
Power
consumption
15 W max. (AUR355C), 10 W max. (AUR355B)
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 Flame relay N.C.
output
Flame output (with
start check)
Event output Flame output
5 A, 250 V (cosφ = 1) 5 A, 250 V (cosφ = 1) 3 A, 250 V (cosφ = 1) 0.2 A, 30 V DC
(cosφ = 1) or 0.3 A,
250 V AC (cosφ = 1)
Flame detection
level
Model AUD300C/500C UV flame detector Flame rod (Ionization)
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.
Flame voltage output range: 0.0–5.0 V DC
Recommended flame voltage:
Stable 2.0 V DC min.
Flame voltage output range: 0.0–4.5 V DC
Input Start, 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, normal temperature, and rated voltage)
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.
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