State Diagrams Of The Individual Types Of Faults - Siemens Synco700 RMK770 Documentation Handbook

Simple fault
Standard fault
Standard fault with
configured fault relay
Extended fault
Building Technologies
HVAC Products
12.5 State diagrams of the individual types of
faults
A simple fault need not be acknowledged. If there is a fault relay (see below), it must be
reset, however.
No fault
(acknowledged)
Fault
coming
Fault
going
Faulty
(acknowledged)
When there is a simple fault, the LED is lit. When the fault is corrected, the LED will
extinguish.
If a fault relay is configured, the LED flashes when the fault occurs and the relay is
energized. When the fault button is pressed, the relay drops out and the LED extin-
guishes. When the fault is corrected, the LED will extinguish.
A standard fault must be acknowledged.
No fault,
LED dark
acknowledged
Fault
going
Faulty,
LED lit
acknowledged
The LED flashes as long as the fault is not acknowledged. If the fault is still present, the
LED will be lit after acknowledgement.
LED off,
No fault,
fault relay off
acknowledged
Fault
going
Faulty,
LED off,
acknowledged
fault relay off
Extended faults are faults that must be acknowledged and reset. This is the case with a
twin pump, for example, when both pumps signal a fault. The pumps will start running
Boiler Sequence Controller RMK770
12 Function block faults
Acknowledge
fault
No fault, not
acknowledged
Fault
coming
Fault
going
Faulty, not
acknowledged
Acknowledge
fault
Acknowledge
fault
No fault, not
acknowledged
Fault
coming
Faulty, not
acknowledged
Acknowledge
fault
LED flashes
LED flashes
LED flashes,
fault relay on
Fault
going
LED flashes,
fault relay on
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CE1P3132en
01.03.2005