User Manual

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Siemens Building Technologies Room Temperature Controllers CE1N3046en
HVAC Products 22.08.2003
Q
[]
%
100
0
W2 W
W1
12,5K 12,5K
+12,5K
(K)
T
[
°C
]
(V)
10
5
-12,5K
0
3041D04
W Original setpoint
W1 Highest setpoint at 10 V input
W2 Lowest setpoint t at 0 V input
(K) Total setpoint shift
(V) Input voltage
The setpoint shift is limited within the range of the unit of
8 °C (frost protection) to 30 °C.
The room temperature setpoint can be limited in increments of 1 Kelvin by making use
of the minimum and maximum limitation facility. Arbitrary setpoint readjustments can
thus be prevented.
Operating modes
The following operating modes are available:
Normal operation is activated when the operating mode selector is set to “
“ (RCU
60.1 and RCU61.1) and the external operating mode changeover switch is not acti-
vated. In normal operation, the controller maintains the adjusted setpoint.
Frost protection mode can be activated either by
• manually switching to standby “
“ (RCU60.1 and RCU61.1) and DIP-Switch No.3
is set to off.
• activating the external operating mode changeover switch, provided DIP switch
no. 1 is set to OFF
If the room temperature falls below 8 °C, the controller will automatically switch to frost
protection mode. In that case, the heating valve opens and the room temperature is
maintained at a setpoint of 8 °C. The setpoint adjusted by the user will then be ignored.
Energy saving mode can be activated either by
• manually switching to energy saving “
“ (RCU60.1 and RCU61.1)
• activating the external operating mode changeover switch, provided DIP switch no.
1 is set to ON
In energy saving mode, the setpoint of heating is 16 °C and the setpoint of cooling
28 °C, independent of the position of the setpoint knob.
A changeover switch can be connected to status input D1–GND. When the switch
closes its contact (caused by an open window, for instance), the operating mode will
change from normal operation or standby to energy saving mode (provided DIP switch
no. 1 is set to ON), or from normal operation or energy saving mode to standby (pro-
vided DIP switch no. 1 is set to OFF).
The operating action of the switch (N.C. or N.O.) can be selected.
Type summary
Type reference Features
RCU60
With ON / OFF or PWM signal for heating, without operating mode
selector
RCU60.1
With ON / OFF or PWM signal for heating, with operating mode
selector
RCU61
With three-position signal for heating, without operating mode
selector
RCU61.1
With three-position signal for heating, with operating mode selector
.
.
Energy saver
Normal operation
Frost protection mode
Energy saving mode
Operating mode
changeover switch