Siemens Desigo RXB Technical Manual page 49

Technical data
Power supply
Operating data
Inputs
Signal inputs D1, D2
(for volt-free contacts)
Measured value input B1
Outputs
AC24 V triac outputs , Y1 ... Y4
Relay outputs Q14, Q24, Q34
Q44
Siemens
Building Technologies
 In the event of a long-term short circuit (approx. 4 minutes) or overload,
the thermal fuse in the transformer may trip.
Subsequently, the device must be exchanged.
 There is no protection against accidental connection on the AC 24 V side.
 Mains AC 230 V for the supply and for the relays must be disconnected before
plugging and unplugging the terminal blocks (danger of electric shock!)
 If serial wiring is applied on the terminal block 19/21, the connection will be
interrupted if the block is removed from the controller (the jumpers 19-19 and
21-21 are on the PCB, not in the block, see terminal diagrams on pages
11 and 12).
Operating voltage
Rated voltage
Frequency
Power consumption with connected field devices
Internal fuse
Control algorithm
Quantity
Contact voltage
Contact current
Contact transfer resistance
Contact insulation resistance
Switch time:
Compatible temperature sensors
Quantity
measuring range
Sensor current
Resolution
Measuring error at 25 °C sensor temp. (without cable) max. 0.5 K
Quantity
Output voltage
Output current
Total nominal load
(at both outputs simultaneously)
Quantity
Relay type
Contact rating with AC voltage
Switching voltage
Nominal current, resistive/inductive
Making current 200 ms half-time
Switching current at AC 29 V
Contact rating with DC voltage
Switching voltage
Switching current at DC 5 V
Switching capacity
Inductive load L/R
Relay type
Contact rating with AC voltage
Max. admissible load (resistive only)
External fuse (essential)
RXB21.1, RXB22.1 Room controllers
AC 230 V ± 10 %
AC 230
50/60 Hz
Max. 12 VA
Thermal, non-resetting
PI
2
DC 16 V
DC 5 mA
Max. 100 
Min. 50 k
min. 20ms "ON", min. 20ms "OFF"
LG-Ni 1000
1
0 ... 50 °C
0.5 mA
0.1 K
2 (RXB22.1)
4 (RXB21.1)
AC 24 V ON/OFF, PWM or 3-position: +/–20%
(May exceed +20% with loads under 2VA)
Max. 0.5 A
Max. 9.5 VA (e.g. 2 thermic valves, type
STP72E per heating and cooling sequence
+ 1 damper actuator 4.5 VA)
3
Monostable
Max. AC 250 V, min. AC 19 V
Max. AC 5 A/4 A (cos  = 0.6)
Max. 20 A
Min. AC 10 mA
Max. DC 250 V, min. DC 5 V
Min. DC 100 mA
Max. 20 W
Max. 7 ms
Monostable
Max. 1.8 kW
Max. 10 A
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CM2N3873en_06
02 Apr 2010