BCU 480 · Edition 03.16l 74
Technical data
9 Technical data
Mains voltage:
230 V AC, 15/+10%, 50/60 Hz,
115 V AC, 15/+10%, 50/60 Hz,
for grounded and ungrounded mains.
Inherent consumption: approx. 9 VA plus inherent con-
sumption of the integrated ignition transformer [50/60
Hz].
Voltage to inputs and valves = mains voltage.
Signal and control line: max. 2.5 mm
2
(AWG 14).
Cable for burner ground/PE wire: 4 mm
2
(AWG 12).
Cable gland:5 cable glands with multiple seal inserts for
2 cable diameters of up to 7 mm,
BCU..P: with 2 cable glands with multiple seal inserts
for 4 cables of up to 7 mm in diameter and an industrial
chassis plug.
Each BCU is supplied for two cable glands with one seal
insert each for cable diameters between 7 and 12 mm.
Input voltage of signal inputs:
Rated value 115 V AC 230 V AC
Signal “1” 80–126.5 160–253
Signal “0” 0–20 0–40
Frequency 50/60 Hz 50/60 Hz
Input current of signal inputs:
Signal “1”: typ. 2 mA
Output current:
max. 1 A, cos ϕ = 1, for the valve outputs (or SRC out-
puts),
but total current for valves and ignition transformer:
max. 2.5 A
Fail-safe inputs and outputs:
All the inputs and outputs marked “
” (see connection
diagrams) may be used for safety tasks.
Flame control with UV sensor or ionization sensor.
Flame signal for
ionization control: 1 – 28 μA,
UV control: 1 – 35 μA.
For intermittent or continuous operation.
Maximum length of ignition cable with integrated elec-
tronic ignition: 5 m (16.4 ft).
Maximum length of ionization/UV cable: 50 m (164 ft).
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