Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Operating modes 03.10.2011
6.12 Plant operating mode relay (basic types A, P,
C, U)
6.12.1 Operating principle
The output "cause" on the operating mode function block allows for the issuing of
the plant operating mode via a relay (Section 6.8).
Forwarding of the plant operating mode relay for external processing (e.g. to open
skylights or windows as part of active night cooling).
Basic type A, U Basic type P, C
Main menu > Commissioning > Extra configuration > Operating mode >
Operating line Adjustable values / remarks
Plant operating mode
relay
---, N.Q1 ... (free relays only).
The following functions are available in the corresponding basic types for plant
operating mode:
Designation "Cause" Basic type
A P C U
Fault X X X X
Smoke extraction X X - -
Preselected stop supp air fan X X - -
Operating mode contact X - - X
Plant operation selector X X X X
User request room X - - X
Request - X X -
No request - X X -
Sustained mode X - - -
Fault X - - -
Smoke extraction X - - -
The Settings menu can define the plant operating mode switched by the relay.
Main menu > Settings > Operating mode >
Operating line Adjustable values Factory setting
Plant operating mode relay Fault, Smoke
extraction, Preselected
stop supp air fan,
Operating mode
contact, Plant operation
selector, User request
room, Request, No
request, Sustained
mode, Night cooling,
Optimum start control
Fault
The setting is independent of the basic type and is displayed the same throughout.
Possible application
Configuration
Settings
Note