9.2.7.3 Troubleshooting
When you leave the commissioning menu, the universal controller checks whether
the room and the supply air temperature sensor are connected and then responds
as follows:
Room and supply air
temperature sensor
present?
• If, at that time, the measured values of room and supply air temperature are
available, but are missing later, a sensor error message is delivered and
presented on the display:
– "Xx ---" => sensor missing
– "Xx ooo" => short-circuit
• If, at that time, the measured value of the room temperature is missing, the
supply air is controlled to the adjusted room temperature setpoints
• If, at that time, the measured value of the supply air temperature is missing, the
plant will be shut down (MAINALM)
9.2.7.4 Settings
Path: … > COMMIS > CONF > CTLOOP 1
Configuration
Display Name Setting
STRATGY Control strategy CAS
Path: … > PARA > CTLOOP 1
Setting values
Display Name Range Factory setting
ROOM XP Room influence Xp 1…1000 K 10 K
ROOM TN Room influence Tn 00.00…60.00 m.s 10.00 m.s
SU MAX Supply air limit
value max
−50…+250 °C 35 °C
SU MIN Supply air limit
value min
−50…+250 °C 16 °C
SU DMIN Min limitation supply
air delta
0…50 K 50 K
SU DMAX Max limitation
supply air delta
0…50 K 50 K
100 / 174
Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Controller (CTLOOP x) 29.08.2008
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