7.4.5 Setpoints for basic type U
The Comfort setpoints must always be entered.
Setpoints for Comfort
The remote setpoint always acts on the lower Comfort setpoint (SET MIN); the
dead zone X
dz
between Seq1+2 and Seq4+5 remains the same as the dead zone
X
dz
for the permanently preset setpoints.
• Therefore, the present lower Comfort setpoint (SET MIN) is:
= remote setpoint (REMx)
• Therefore, the present upper Comfort cooling setpoint (SET MAX) is:
= remote setpoint (REMx) + (upper Comfort setpoint minus lower Comfort
setpoint)
Y
1
0
T
SET MAX
SET MIN
REMx
3101D10
X
dz
X
dz
The Economy setpoints are shifted in the same way.
Setpoints for Economy
7.4.6 Troubleshooting
When you leave the commissioning menu, the universal controller checks whether
the setpoint adjuster is connected.
Connection errors
• If, at that time, the setpoint adjuster is connected, but is missing later during
operation, or if there is a short-circuit in the cable, a sensor error message is
delivered and presented on the display:
– "Xx ---" => setpoint adjuster missing
– "Xx ooo" => short-circuit
• If, at that time, there is no signal from the setpoint adjuster, the controller uses
the internally adjusted setpoints
If more than one input has been activated as the remote setpoint adjuster for the
same controller, the controller only accepts the first input.
Configuration errors
Note Remote setpoint adjusters BSG21.2, BSG21.3, BSG21.4 and QAA26 are not
supported.
47 / 174
Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Inputs 29.08.2008
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