BCU 560, BCU 565 · Edition 02.16
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17 Technical data
17 .1 Electrical data
Mains voltage
BCU..Q: 120 V AC, -15/+10%, 50/60 Hz, ±5%,
BCU..W: 230 V AC, -15/+10%, 50/60 Hz, ±5%,
for grounded or ungrounded mains.
Power consumption
At 230 V AC approx. 6 W/11 VA plus power consump-
tion per AC input of approx. 0.15 W/0.4 VA,
at 120 V AC approx. 3 W/5.5 VA plus power consumption per
AC input of approx. 0.08 W/0.2 VA.
Flame control
With UV sensor or ionization sensor,
for continuous operation (intermittent operation with UVS).
Flame signal current: ionization control: 2 – 25 μA,
UV control: 5 – 25 μA.
Signal cable for flame signal current: max. 100 m (164 ft).
Contact rating
– Valve outputs V1, V2 and V3 (terminals 13, 14 and 15):
max. 1 A each, cos
ϕ
≥ 0.6.
– Actuator outputs (terminals 53, 54 and 55):
max. 1 A each, cos
ϕ
= 1.
– Ignition transformer (terminal 9):
max. 2 A.
– Total current for the simultaneous activation of the valve
outputs (terminals 13, 14 and 15), of the actuator (terminals
53 – 56) and the ignition transformer:
max. 2.5 A.
– Signalling contact for operating and fault signals:
max. 1 A (external fuse required).
Number of operating cycles
The fail-safe outputs (valve outputs V1, V2 and V3) are moni-
tored for correct functioning and are thus not subject to a
max. number of operating cycles.
Actuator (terminals 53, 54 and 55): max. 1,000,000,
signalling contact for operating signals: max. 1,000,000,
signalling contact for fault signals: max. 10,000,
On/Off button: max. 10,000,
Reset/Information button: max. 10,000.
Input voltage of signal inputs:
Rated value
120 V AC
230 V AC
Signal “1”
80 – 132 V
160 – 253 V
Signal “0”
0 – 20 V
0 – 40 V
Signal input current:
Signal “1”
max. 5 mA
Fuses, replaceable,
F1: T 3.15A H,
F2: T 2A H, pursuant to IEC 60127-2/5.
