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Building Technologies
Boiler sequence controller RMK770
CE1P3132en
HVAC Products
13 Function block “Faults“
23.04.2009
13
Function block “Faults“
13.1 Overview of function block
The task of function block “Faults” is to collect and evaluate all fault status messages,
and to trigger appropriate actions to prevent damage to the building and plant.
The function block is always active for internal fault status messages. In the extra
configuration – in addition to the fault inputs of the boiler sequence manager, the fault
inputs of boilers 1 through 6 and pumps – up to 4 inputs can be activated as fault inputs
for external signal sources.
It is also possible to monitor inputs that have already been configured (e.g. the main
flow sensor).
To signal faults, 2 relays can be configured as fault outputs.
Re
la
y 1
Re
la
y 2
Faults
Fa
ul
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utt
on
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ut
of
f v
al
ve
13.2 Configuration
In the extra configuration, a maximum of 4 universal fault inputs and 2 fault relays can
be configured.
The inputs can be configured to free inputs, or analog inputs that are already used can
be monitored for limit value crossings.
Main menu > Commissioning > Extra configuration > Faults > Inputs
Operating line
Adjustable values / remarks
Fault button external
RMK770…, RMZ7… (digital only)
Fault input 1
Analog or digital inputs
Fault input 2
Fault input 3
Fault input 4
Main menu > Commissioning > Extra configuration > Faults > Outputs
Operating line
Adjustable values / remarks
Fault relay 1
RMK770…, RMZ7…
Fault relay 2
RMK770…, RMZ7…
13.3 Fault button
Fault status messages delivered to the controller are indicated by the LED in the fault
button. If a fault status message needs to be acknowledged, the acknowledgement
must also be made via the fault button.
There are 3 choices:
Extra configuration
Inputs
Outputs
