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Carel pCO2 User Manual

Carel pCO2
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9.2.1 Ingressi analogici
AVVERTENZA: per l’alimentazione di eventuali sonde attive, è possibile
utilizzare i 21 Vdc disponibili al morsetto +Vdc, la corrente massima
erogabile è di 200 mA protetta termicamente contro i cortocircuiti.
A differenza del pCO
B
il segnale 0/1 Vdc è da intendersi limitato al
range ristretto 0/1 V e non è quindi sempre compatibile con il segnale
standard 10mV/°C delle sonde Carel (per temperature negative e
superiori a 100 °C può generare allarme sonda), per i segnali in
temperatura usare quindi 4/20 mA o NTC).
9.2 pCO
2
electrical specifications
9.2.1 Analogue inputs
WARNING: the 21Vdc available at the +Vdc terminal can be used for
the power supply of any active probes, the maximum current being
200mA, protected thermally against short circuits.
Unlike pCO
B
the signal 0/1Vdc is limited to the restricted range 0-1V, so
it is not always compatible with the standard signal 10mV/°C of Carel
probes (if the temperature is below zero or higher than 100°C, it can
cause probe alarm). So, for the temperature signals use 4/20mA or
NTC).
51
pCO
2
- cod. +030221835 rel. 3.0 - 18.02.03
power supply (control with terminal connected) 22/40Vdc and 24Vac ±15% 50/60Hz.Maximum consumption P=15
terminal block with removable male/female connectors; maximum voltage: 250Vac;
max current: 8A; cable cross-sec.(mm
2
): min. 0.2 - max 2.5
CPU H83002 16bit, 14Hz
program memory (in FLASH MEMORY) 1+1MB or 2+2MB that can be optionally increased with 1 or 2MB
data memory (static RAM) 256 kByte structured at 16 bit (expandable up to 1 MByte)
parameter data memory 4 kByte structured at 16 bit (maximum limit: 400,000 writes per memory location)
further 32 kB E2prom (not visible from pLAN) for default in the versions with
2+2 MB Flash memory
working cycle of the pCO
2
with applicat. of average complexity (s) 0.5 (typical)
Tab. 9.2.1
conversione analogica A/D converter a 10 bit CPU built-in
numero massimo 5, 8, 10, rispettivamente sulle schede SMALL, MEDIA, LARGE
tipo • passivo: sensore di temperatura NTC Carel (-50/90 °C; R/T 10 k ±1% a 25 °C,
B
25/80
=3,435 °K ± 1%), PT1000 (-100/200 °C; R/T 1000 /°C) o input digitale pulito,
selezionabili via software (ingressi: B4, B5, B9, B10);
• universale: sensore di temp. NTC Carel (-50/90 °C; R/T 10 kW ± 1% a 25 °C,
B
25/80
=3,435 °K ± 1%), tensione: 0/1 Vdc o 0/10 Vdc, corrente: 0/20 mA o 4/20 mA,
selezionabili via software (ingressi B1, B2, B3, B6, B7, B8).
resistenza di ingresso in 0/20 mA= 50.
Per tutti i tipi di ingresso il metodo di misura è a gradino.
costante di tempo per ogni ingresso 0,5 s
precisione ingresso NTC (°C) ± 0,5
precisione ingresso PT1000 (°C) ± 1
precisione ingresso 0/1 V (mV) ± 3
precisione ingresso 0/10 V (mV) ± 30
precisione ingresso 0/20 mA (mA) ± 0,06
tempo minimo rilevazione impulso ingresso digitale pulito
normalmente aperto (aperto-chiuso-aperto) oppure normalmente chiuso
(chiuso-aperto-chiuso) in DC - ingr. analogici 4, 5, 9, 10 (ms) 250 *
*a questo valore bisogna sommare il tempo di processo del programma applicativo.
Tab. 9.2.1.1
analogue conversion 10 bit A/D converter Built-in CPU
maximum number 5, 8, 10, respectively on the SMALL, MEDIUM, LARGE boards
type • passive: Carel NTC temperature sensor (-50/90°C; R/T 10kW ± 1% at 25°C,
B25/80=3.435oK ± 1%), PT1000 (-100/200oC; R/T 1000W/oC) or clean digital
input, selectable via software (inputs: B4, B5, B9, B10)
• universal: Carel NTC temperature sensor (-50/90 °C; R/T 10kW ± 1% at 25 °C,
B25/80=3,435 oK ± 1%), voltage: 0/1Vdc or 0/10Vdc, current: 0/20mA or 4/20mA,
selectable via software (inputs B1, B2, B3, B6, B7, B8)
input resistance in 0/20mA = 50
For all kind of inputs the unit of measurement is by step
time constant for each input 0.5 s
NTC input accuracy (°C) ± 0.5
PT1000 input accuracy (°C) ± 1
0/1V input accuracy (mV) ± 3
0/10V input accuracy (mV) ± 30
0/20mA input accuracy (mA) ± 0.06
minimum impulse detection time for clean digital input,
normally open (open-closed-open) or normally closed
(closed-open-closed) in DC - analogue inputs 4, 5, 9, 10 (ms) 250 *
* you must add this value with the processing time of the application programme.
Tab. 8.2.1.1

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Carel pCO2 Specifications

General IconGeneral
BrandCarel
ModelpCO2
CategoryController
LanguageEnglish

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