Function Of Sensor 3; Proof Of Closure Function Test Period - Honeywell BCU 460 Technical Information

Parameters

11 .12 .3 Function of sensor 3

Parameter A103
Terminal 38 is assigned a sensor function using param-
eter A103.
The value ranges and descriptions for the parameter are
identical to parameter A101, see page 103 (Function
of sensor 1).

11 .12 .4 Proof of closure function test period

Parameter A060
Parameter A060 = 0 to 6000 s: testing time for the
closed position of one of the gas valves V1, V2, V3, V4
or V5.
When the start-up signal is received at terminal 1, the
BCU checks that one of the gas valves (V1 to V5) is in
its closed position using the POC switch. If a signal is
not received from the POC switch at terminal 36, 37
or 38, depending on parameter A101, A102 or A103,
after the set testing time (gas valve is closed), the BCU
performs a fault lock-out with fault message "E c1".
As soon as the BCU has opened the gas valve, it que-
ries the open position of the valve via the POC switch.
If a signal is still being received from the POC switch at
terminal 36, 37 or 38 after the set testing time, the BCU
performs a fault lock-out with fault message "E c8".
BCU 460, BCU 465 · Edition 11.19 105