Fault Relay - Siemens Synco700 RMK770 Documentation Handbook

Setting values
Extra configuration
Setting values
Example
Building Technologies
HVAC Products
Main menu > Commissioning > Communication > Basic settings
Operating line
Remote reset of fault
A controller cannot acknowledge any fault status messages on other controllers.
12.9

Fault relay

To pass on the fault status messages or to indicate them optically on a control panel,
for example, 2 fault status outputs can be configured.
The function is to be activated via the extra configuration:
For every relay, the following settings can be made:
• Fault priority: The priorities with which the relay shall pull in can be selected (refer to
subsection 12.4.2 "Signal priority")
• Fault source: When communication has been activated, the fault source can be set.
The "Bus" setting shows all faults signaled via bus.
Main menu > Settings > Faults > Fault relay 1 (or 2 )
Operating line
Fault priority
Fault source
The fault relay only remains energized until the fault is acknowledged.
The fault button is lit until the fault is corrected.
The following illustration shows a possible configuration.
Problem:
2 relays are configured as fault relay 1 and fault relay 2. Fault relay 1 shall indicate all
internal fault status messages having the priority "urgent". Fault relay 2 shall indicate all
fault status messages (internal and from the bus), independent 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:
Internal faults, e.g.
sensor error with priorities
urgent/non-urgent
Fault priority:
Non-urgent
Fault
input 1
Fault priority:
Urgent
Fault
input 3
Fault
input 4
Fault status messages
from the bus with priorities
urgent/non-urgent
Boiler Sequence Controller RMK770
12 Function block faults
Range
No / Yes
Range
Urgent / Not urgent
Internal / Bus
Fault priority, fault source:
Internal
Non-urgent
Internal
Urgent
From bus
Non-urgent
From bus
Urgent
Factory setting
No
Factory setting
Not urgent
Internal
Fault priority: Urgewnt
Fault source: Inetrnal
Fault
relay 1
Fault priority: All
Fault source: Bus
Fault
relay 2
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CE1P3132en
01.03.2005