External Fault Button; Fault Properties; Acknowledgement And Reset - Siemens Synco 700 Series Basic Documentation

Fault relay
Note
Acknowledging faults
Resetting the fault relay
Configuration
No acknowledgement
(simple fault)
Example
196/232
Building Technologies
HVAC Products
Indication
Button is not lit
Button blinks
Button is lit
A fault relay, if present, remains energized as long as the button blinks or is lit. For
more detailed information, refer to section 13.11 „Display of faults".
The LED extinguishes only when the fault is no longer present. If the LED of the fault
button is lit and does not extinguish when making acknowledgements, a fault status
message is still pending.
The acknowledgement is to be made according to the following pattern:
• Acknowledge the fault relay (only, if a fault relay has been configured)
• Acknowledge all fault status messages present in the device
• Fault status messages with self-holding can only be reset when the fault is no longer
present
Faults can only be acknowledged on the device where the fault is present.
Fault relays can only be reset on the device with the configured fault relays.
13.4

External fault button

The "Faults" block has an optional connection facility for an external fault button. The
external fault button provides the same function as fault button
buttons can be operated in parallel.
Main menu > Commissioning > Extra configuration > Faults > Inputs >
Operating line
Fault button external
13.5

Fault properties

Faults are distinguished by their properties. There are faults with regard to:

• Acknowledgement and reset

• Signal priority
• Plant behavior
13.5.1 Acknowledgement and reset
There is no acknowledgement required for these types of fault.
If the outside temperature is missing, a fault status message is delivered. When the
outside temperature is available again, the fault status message automatically disap-
pears and the plant resumes normal operation.
Boiler Sequence Controller RMK770
13 Function block "Faults"
Cause / procedure
No fault present
• There is a fault which has not been
acknowledged. After pressing the button,
the button remains lit until the fault is rec-
tified
• There was a temporary fault which, at the
moment, can be no longer detected, de-
manding on acknowledgement which has
not yet been made. After pressing the
button, blinking stops
There is a fault which has already been
acknowledged
on the device. The 2
Adjustable values / display / remarks
RMK770..., RMZ7... (digital only)
CE1P3132en
23.04.2009