Siemens Synco 700 Series - Page 203

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Building Technologies Boiler sequence controller RMK770 CE1P3132en
HVAC Products 13 Function block “Faults“ 23.04.2009
Main menu > Commissioning > Settings or
Main menu > Settings > Faults > Fault relay 1 (or 2)
Operating line Range Factory setting
Fault priority Urgent / Nonurgent / All All
Indication of fault* Fault internal (optically) /
Fault internal (audibly) /
Fault via bus (audibly)
Fault internal
(audibly)**
Inversion No / Yes No
*
Maximum 1 bus fault status message can be handled, even if they have different priorities
Recommendation: Do not configure 2 bus fault relays
** Factory setting fault relay 2: “Fault via bus (audibly)“
Menu item
Miscellaneous shows the state of both fault relays.
Main menu > Miscellaneous > Outputs
Operating line Current state
Fault relay 1 Off / On
Fault relay 2 Off / On
Problem:
2 relays are configured as fault relay 1 and fault relay 2. Fault relay 1 shall signal all
internal fault status messages having priority “Urgent”. Fault relay 2 shall signal all fault
status messages (internal and from the bus), irrespective of their priority.
At fault input 1, the fault monitored shall be identified and signaled as nonurgent; at
fault input 2, the fault monitored shall be identified and signaled as urgent.
Solution:
3131B13
Fault
input 1
Fault status messages
from the bus with priorities
urgent/non-urgent
Fault priority, fault source:
Non-urgent
Internal
From bus
Fault priority:
Non-urgent
Fault
relay 2
Fault priority: All
Fault source: Bus
Internal faults, e.g.
sensor error with priorities
urgent/non-urgent
Internal
Urgent
Fault priority:
Urgent
Fault
input 3
Fault
input 4
Non-urgent
From bus
Urgent
Fault
relay 1
Fault priority: Urgewnt
Fault source: Inetrnal
Setting values
Display values
Example