Sauter Italia S.p.A.
RDT921F901
| Hardware manual ver. 1.0 | Code 114RDT921E104SAU
page 33 of 38
Power supply:
-
24 VAC, 50/60 Hz (±3 Hz), 20 VA max. not insulated
-
20... 40 VDC, 12 W max. not insulated
supplied by a class 2 circuit.
Protect the power supply with a 2A-T 250 V fuse
If the device runs on direct current, it shall be necessary to pay attention to the polarity of
the supply voltage.
Rated impulse voltage:
4 KV.
Overvoltage category:
III.
Class and structure of software:
A.
Clock:
integrated (with primary lithium battery)
Battery autonomy without power supply: 5 years at 25 °C (77 °F).
Drift: ≤ 30 s/ month at 25 °C (77 °F).
Digital inputs:
5 inputs:
-
3 configurable via configuration parameter for PTC, Ni 1000, NTC or Pt 1000
probes
-
3 configurable via configuration parameter for PTC, NTC, Ni 1000, Pt 1000
probes, transducers 0-20 mA, 4-20 mA, 0-5 V ratiometric or 0-10 V.
Ratiometric transducers 0-5 V power supply: 5 VDC (+0 %, -12 %), 60 mA max.
Transducers power supply 0-20 mA, 4-20 mA e 0-10 V: 12 DC (+50 %, -25 %),
120 mA max.
The maximum current distributable by the two power supplies is 120 mA.
Digital inputs Ni 1000 (1 Kohm @0°C, 32°F)
Measurement field:
-50 .. 260°C (-58 .. 500°F)
Precision:
+/- 0.5% del FS da -50 a 250
Resolution :
0,1 °C.
Conversion time:
100 ms.
Protection:
none.
Digital inputs NTC (10 K @ 25 °C, 77 °F)
Type of sensor:
ß3435.
Measurement field:
from -50 to 120 °C (from -58 to 248 °F).
Precision:
-
±0.5 % of scale end from -40 to 100 °C
-
±1 °C from -50 to -40 °C and from 100 to 120 °C.
Resolution :
0.1 °C.
Conversion time:
100 ms.
Protection:
none.
