Basic Documentation

252/332
Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Faults 03.10.2011
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Faults > Fault relay 1..2 >
Operating line Range Factory setting
Fault priority Urgent, Not urgent, All All
Indication of fault Internal fault (visual), Internal
fault (acoustic), Fault via bus
(acoustic)
Internal fault *
(acoustic)
Inversion Yes, No No
* Factory setting for fault relay 2: "Fault via bus (audibly)"
At menu item "Aggregates", the state of the 2 fault relays can be read.
Main menu > Aggregates > Faults >
Operating line Current state
Fault relay 1 Off, On
Fault relay 2 Off, On
24.7 Fan release relay
The fan release relay can only be configured for basic types A and P.
Main menu > Commissioning > Extra configuration > Faults
Operating line Adjustable values / remarks
Fan release relay ---, N.Q1, N.Q2, ... (free relays only) /
assign fault relay
This relay is deenergized as soon as a fault exists in the device where the fans
must be switched off (e.g. risk of frost).
If external on / off switches for the fans are used and they take priority over the
controller (in the control chain after the controllers or the load switch), we
recommend to release the fans only via this relay, enabling the fans to be locked in
an emergency.
Although the fans can be switched off via this relay in an emergency, smoke
extraction operation with the fans is no longer possible!
If smoke extraction operation is required, we recommend to use a fan on / off
switch via the controller inputs in place of external on / off switches (see section
10.1.11 "Start and stop conditions").
At menu item "Aggregate
s", the state of the 2 fan release relays can be read.
Main menu > Aggregates > Faults >
Operating line Current state
Fan release relay Off, On
24.8 Function check / wiring test
During the wiring test, the two fault relays can be activated directly:
Main menu > Commissioning > Wiring test > Outputs >
Operating line Comments
Fault relay 1 Off, On
Fault relay 2 Off, On
Fan release relay Off, On
Setting values
Display values
Configuration
Caution
Display values
Wiring test