Siemens PBC Manual

PBC
Room operating unit
with temperature display
Room operating unit for individual
room control in HVAC systems.
Used in conjunction with PRONTO
PRFA.., PRONTO IRC PRU/A, PRFB..,
PRVU, SMART SMVU and INTEGRAL
RS NRU.., NRK..
• T1 temperature sensor
• Setpoint adjuster
• Room temperature display
• Socket for ZS1 service terminal
(for PRONTO IRC controllers only)
50938
FCC socket for ZS1
service terminal
– +
± 2.5 K
trimmer potentiometer
Ordering information
The base unit and electronic assembly are
supplied separately and must be ordered
as separate items:
PBC Electronic assembly (without base
unit)
PB2 Base unit with transparent
protective cover
22845 Service cable for ZS1 service
terminal
Ordering example
PBC (Electronic assembly)
PB2 (Base unit)
22845 (Service cable)
Siemens Building Technologies
Landis & Staefa Division
Technical data
Power supply:
Nominal voltage
– Max. tolerance
Power consumption
Product data:
Sensor element
Trimmer range
Setpoint adjustment range
Room temperature display
Display range (selected by switch)
Connections:
Screw terminals
Service socket
Weight without unit base
(including packaging)
Dimensions (w x h x d)
Colour:
Housing
Operator elements
Safety:
Product safety
– Contamination level
Electrical safety
General ambient conditions:
Usage
Operating temperature
Storage temperature
Ambient humidity
Conformity
Principle of operation
The room temperature is measured with a built-in T1 temperature sensor
(PTC silicon resistance element, see sheet 1713). If a sill-line sensor is used
(such as the PFB-T1, for example), the room temperature sensor must not be
connected (see "Terminal layout", page 2).
The stepless rotary knob on the room operating unit allows the setpoint
defined in the connected controller to be reset locally by ± 3 K.
The LCD display shows the current room temperature in degrees Celsius
(0...50 °C) or degrees Fahrenheit (32 ...122 °F). The preferred temperature
scale can be selected with switch S4 inside the unit.
A trimmer potentiometer on the underside of the room operating unit can
be used to recalibrate the measured sensor signal by ± 2.5 K (see "Commissio-
ning", page 3).
An FCC- telephone socket on the underside of the unit is provided for con-
nection of the ZS1 service terminal, used in conjunction with the PRONTO
IRC controllers for parameter setting and diagnostics.
DC 15 V from PRU/A, NRU.., NRK..,
AC 24 V, 50/60 Hz from other controllers
± 15 %
Max. 0.7 VA
T1 (PTC)
± 2.5 K
± 3.0 K, stepless (rotary knob)
3-digit LCD
0 ... 50 °C / 32 ... 122 °F
Resolution 0.5 °C / 1 °F
2
2.5 mm
FCC 4/4 pin
0.15 kg
80 x 135 x 37 mm
NCS 0003-R20B (white)
NCS 1005-R20B (light grey)
EN 61010-1
2 (normal non-conductive contamination)
SELV
For indoor use
0 ... 50 °C
– 25 ... 70 °C
Max. 65 %rh annual mean,
non-condensing
This product meets the requirements for
-marking
CA2N1655E / 11.1998
1
655
PBC
1/4