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1.1 pCO
2
: SMALL, MEDIUM, LARGE.............................................................................................................................4
1.1.1 Features common to all the versions.............................................................................................................................4
1.1.2 Features of the individual versions................................................................................................................................4
1.2 Programmability............................................................................................................................................................5
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2.1 Instrument and accessory codes....................................................................................................................................8
2.2 Meaning of the inputs/outputs.....................................................................................................................................10
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3.1 Contrast control in LCD Display.................................................................................................................................12
3.2 Display LCD 4x20 for wall or panel mounting...........................................................................................................12
3.3 LED Display for wall or panel mounting....................................................................................................................12
3.4 LCD Graphic Display for wall or panel mounting......................................................................................................12
3.5 4x20 LCD Display for panel mounting.......................................................................................................................13
3.6 LCD Graphic Display for panel mounting..................................................................................................................13
3.7 3-Digit Display - LED 32x72......................................................................................................................................13
3.8 Built-in display............................................................................................................................................................14
3.9 pCO terminal keypad ..................................................................................................................................................14
3.9.1 Typical use of the buttons in standard Carel applications...........................................................................................15
3.10 Functions and features of the terminal with graphic display......................................................................................15
3.10.1 Graphic display board.................................................................................................................................................16
3.10.2 Inverter card for powering the fluorescent light on the display (CFL) and connecting to the pCO
2
...........................16
3.10.3 Protective screen (optional printer card).....................................................................................................................16
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4.1 Anchoring the pCO
2
....................................................................................................................................................17
4.2 Power supply...............................................................................................................................................................17
4.3 Installation warnings - destination and connection environments...............................................................................17
4.4 Connecting the analogue inputs ..................................................................................................................................18
4.4.1 Connecting active temperature and humidity probes ..................................................................................................19
4.4.2 Connecting the universal NTC temperature probes ....................................................................................................20
4.4.3 Connecting the PT1000 temperature probes...............................................................................................................21
4.4.4 Connecting the pressure probes...................................................................................................................................22
4.4.5 Connecting the ON/OFF selectable analogue inputs...................................................................................................23
4.4.6 Table summarising the analogue inputs according to the available versions ..............................................................23
4.5 Connecting the digital inputs.......................................................................................................................................24
4.5.1 Digital inputs powered at 24Vac.................................................................................................................................24
4.5.2 Digital inputs powered at 24Vdc.................................................................................................................................25
4.5.3 Digital inputs powered at 230Vac...............................................................................................................................26
4.5.4 Table summarising the digital inputs according to the available versions...................................................................26
4.6 Connecting the analogue outputs ................................................................................................................................27
4.7 Connecting the digital outputs.....................................................................................................................................28
4.7.1 Electromechanical relay digital outputs ......................................................................................................................28
4.7.2 Solid state relay digital outputs (SSR) ........................................................................................................................29
4.7.3 Table summarising the digital outputs according to the available versions.................................................................29
4.8 Installing the user terminal..........................................................................................................................................30
4.8.1 Installing the wall/panel-mounting terminals (pCOT) and relative electrical connections..........................................30
4.8.2 Installing the panel-mounted terminals(pCOI) and relative electrical connections....................................................30
4.9 Installing the program EPROM in the terminal with graphic display .........................................................................31
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5.1 Addressing the pCO
2
...................................................................................................................................................33
5.2 Addressing the terminals.............................................................................................................................................33
5.3 Private / shared terminals............................................................................................................................................34
5.4 pLAN electrical connections.......................................................................................................................................35
5.5 Remote installation of the terminal in a pLAN network..............................................................................................36
5.5.1 Remote terminal with pLAN network and telephone-type cable.................................................................................37
5.5.2 Remote terminal installation on pLAN network using AWG24 shielded cable with 3 twisted pairs + shield......................38
5.5.3 Remote installation of the terminal in a pLAN network with AWG20/22 shielded cables.........................................39
5.6 pLAN network technical specifications ......................................................................................................................39
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6.1 Programming key........................................................................................................................................................40
6.2 Memory expansion......................................................................................................................................................40
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