User Manual

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Siemens PXC-NRUF – Automation station, compact series CM2N9760en_07
Building Technologies 2015-12-23
Technical data
General device data
Operating voltage
AC/DC 24 V ± 20 % (SELV / PELV)
Frequency
0 / 50/60 Hz.
Power consumption
max. 26 VA.
Internal fuse
thermal, automated reset.
Functional data
Processor
Motorola PPC (MPC 885).
Storage location FLASH
16 MB.
RAM
64 MB.
Data backup during power outage
Applications / Parameters (FLASH)
> 10 years.
Runtime data
(buffered by AA alkaline,
can be replaced on the plant)
Unused: 4 years.
Typically 1 month in case of supply
failure (grid or AC 24 V)
Realtime clock
(buffered by Lithium battery,
can be replaced on the plant).
10 years.
Precision category
0.5.
Sampling cycle
max. 1 second.
Universal inputs
Can be configured in software
UI 1 ... 16
A/D resolution (analog in)
16 bit.
Measured value inputs
Area
0 ... 11.0 V.
Input resistance
100 kΩ against –.
Sensor inputs
Temperature sensor
LG-Ni 1000, NI 1000, Pt 1000, T1
Measuring range
– 50 ... 150 °C
Sensor electricity (pulsed)
approx. 1.5 mA (peak).
Resolution
0.2 K.
Meas. error at 25 °C (Ni 1000, Pt 1000)
max. 0.2 K (excluding wire + sensor).
Measuring error at 25 °C (T1)
max. 1.0 K (excluding wire + sensor).
Signal input
Contact voltage
DC 20 ... 25 V.
Contact electricity (pulsed)
7 mA (peak).
Contact resistance
Max. 200
Ω(closed).
Insulation resistance
Min. 50 kΩ (open).
Digital inputs DI 1 ... 8
Electrically isolated
From system and from one another
Not potential free.
Area.
Low < AC/DC 6V.
High = AC/DC 15.. 42 V ± 10%.
Interior resistance.
Ri = 4kΩ.
Digital inputs DI 9 ... 16
Contact voltage.
DC 20 ... 25 V.
Contact current (continuous).
7 mA.
Contact resistance.
Max. 200 Ω(closed).
Insulation resistance.
Min. 50 kΩ (open).