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Siemens
RXM21.1 - PL-Link IO Block
CM2N3835en_01
Building Technologies
07 Mar 2012
Operating notes
•
When power is off, all outputs are inactive
•
When PL-Link communications fails, all outputs go to the configured backup
values (after 2 x Heartbeat time).
Technical data
Power
Rated voltage
AC 230 V
Frequency
50 / 60 Hz
Power consumption incl. connected field
devices
Max. 12 VA
Internal fuse
Thermal, irreversible
Protection
Protection against faulty wiring on AC 230 V No protection for On / outputs
Inputs
Status inputs (D1, D2)
Quantity
2
(for potential-free contacts) Contact voltage.
DC 16 V
Contact current
DC 5 mA
Contact transfer resistance
Max. 100 Ohm
Contact insulation resistance
Min. 50 kOhm
Switching time:
Min. 20 ms “ON”, min. 20 ms “OFF”
Heartbeat 1
s
Protection against faulty wiring on AC 24 V Protected
Measured value input B1
Connectable temperature sensor
LG-Ni 1000
Quantity
1
Measuring range
0...50 °C
Sensor current
0.5 mA
Resolution
0. 1 K
Measuring error at 25 °C sensor temp.
(without line resistance)
Max. 0.5 K
Heartbeat 10
s
Protection against faulty wiring on AC 24 V Protected
Outputs
Triac outputs AC 24 V
Quantity
4 (Y1 ... Y4)
Output voltage
AC 24 V +/- 20%
(at <2 VA load: possibly >+20%!)
Outputs Y1...Y4 are on AC 24 V, the triac closes against contact to G
Output current
Max. 0.5 A
Total rated load
(at simultaneous load on 2 outputs)
Max. 9 VA
Protection against overload
No protection
