User Manual

Siemens Building Technologies CA2N1653E / 11.1998
Landis & Staefa Division 1/4
1
653
PBAS/C1
Technical data
Product data
Operating range 0 ... 50 °C
Sensor element T1 (PTC)
Trimmer range ± 2.5 K
Setpoint adjustment ± 3.0 K, stepless (rotary knob)
Rotary switch, volt-free Steps 0 – I
– Contact rating Max. AC 250 V
Max. 6 A resistive
Max. 2 A inductive, cosϕ = 0.4
– Voltage against earth Max. 250 V
Connections
Screw terminals 2.5 mm
2
Service socket FCC 4/4 pin
Weight without base unit
(including packaging) 0.09 kg
Dimensions (W x H x D) 80 x 135 x 37 mm
Colour
Housing NCS 0003-R20B (white)
Operator elements NCS 1005-R20B (light grey)
Safety
Product safety EN 61010-1
– Contamination level 2 Normal, non-conductive contamination
– Overvoltage category II With transient overvoltages up to 2500 V
Electrical safety SELV-E (PELV to IEC 364-4-41)
General ambient conditions
Usage For indoor use
Operating temperature 0 ... 50 °C
Storage temperature – 25 ... 70 °C
Ambient humidity 10 ... 90 % rh, non-condensing
Conformity This product meets the requirements for
marking
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), 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 2-step rotary switch can be wired on site for a variety of control tasks,
e.g.:
– DAY / NIGHT change-over (acting on the controller EHO input)
– AUTO / OFF fan control: (in conjunction with controllers with automatic
fan control such as the PRFA-V or PRFB-V, this allows the room user to
switch the fan off manually).
The measured sensor signal can be recalibrated by ± 2.5 K, by means of the
trimmer potentiometer on the underside of the room operating unit.
An FCC telephone socket is provided on the underside of the unit for
connection of the ZS1 service terminal, used in conjunction with the
PRONTO IRC controllers for parameter setting and diagnostics.
PBAS/C1
Room operating unit
with step switch
Room operating unit for individual
room control in HVAC systems.
Used in conjunction with the
PRONTO PRFA.., PRONTO IRC PRU/A,
PRFB.., PRVU, SMART SMVU and
INTEGRAL RS controllers.
• T1 temperature sensor
• ± 3K setpoint adjuster
• 0 – I step switch, for use as re-
quired
• Socket for ZS1 service terminal
(for PRONTO IRC 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:
PBAS/C1 Electronic assembly
(without base unit)
PB3/C1 Base unit with transparent
protective cover
22845 Service cable for ZS1 service
terminal
Ordering example
PBAS/C1 (Room operating unit)
PB3/C1 (Base unit)
22845 (Service cable)