EVCO EVB1256N9D User Manual
Page 88
EVCO S.p.A.
EVBOX1 | Installation guide ver. 1.3 | Code 144BOX1E134
page 88 of 92
Analogue inputs
according to model, up to 5 inputs:
-
3 configurable via configuration parameter for PTC,
NTC or Pt 1000 probes (room temperature,
evaporator
temperature
and
evaporation
temperature)
-
1 configurable via configuration parameter for PTC,
NTC
or
Pt
1000
probes
(configurable
via
configuration parameter for condenser temperature,
critical temperature, evaporator 2 temperature or
CPT temperature)
-
1 for 4-20 mA transducers (vapour pressure).
4-20 mA transducers power supply: 12 VDC (±10 %),
30 mA max.
Analogue inputs PTC (990 @ 25 °C, 77 °F)
Type of sensor:
KTY 81-121.
Measurement field:
from -50 to 150 °C (from -58 to
302 °F).
Precision:
±0,5 % of scale end.
Resolution :
0,1 °C (1 °F).
Protection:
none.
Analogue 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.
Resolution :
0,1 °C (1 °F).
Protection:
none.
Analogue inputs Pt 1000 (1 K @ 0 °C, 32 °F)
Measurement field:
from -99 to 150 °C (from -99 to
302 °F).
Precision:
±0,5 % of scale end.
Resolution :
0,1 °C (1 °F).
Protection:
none.
Analogue inputs 4-20 mA
Input resistance:
≤ 200 .
Precision:
±0,5 % of scale end.
Resolution :
0.01 mA.
Protection:
none;
maximum
allowable
current
at each input is 25 mA.
Digital inputs:
3 inputs, configurable via configuration parameter for NA or NC
contact (micro port, multifunction 1 and multifunction 2)