Carel pCO3 series User Manual

pCO Sistema
Code: +030220336 - rel. 1.5 - 22/12/10
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4. INSTALLING THE pCO CONTROLLER
4.1 General installation instructions
4.1.1
4.1.14.1.1
4.1.1 Installation procedure
Installation procedureInstallation procedure
Installation procedure
Environmental conditions
Environmental conditionsEnvironmental conditions
Environmental conditions
Avoid assembling the pCO and the terminal in environments with the following situations:
 temperature and humidity that do not conform to the rated operating data of the product;
 strong vibrations or knocks;
 exposure to aggressive and polluting atmospheres (e.g.: sulphur and ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or oxidation;
 strong magnetic and/or radio frequency interference (there avoid installing the units near transmitting antennae);
 exposure of the pCO to direct sunlight and to the elements in general;
 large and rapid fluctuations in the room temperature;
 environments containing explosives or mixes of flammable gases;
 exposure to dust (formation of corrosive patina with possible oxidation and reduction of insulation).
Positioning the instrument inside the panel
Positioning the instrument inside the panelPositioning the instrument inside the panel
Positioning the instrument inside the panel
The instrument must be positioned inside the electrical cabinet so as to guarantee sufficient physical separation of the instrument from the power
components (solenoids, contactors, actuators, inverters, ...) and the cables connected to these. Proximity to such devices may cause random malfunctions that
are not immediately evident.
The panel must feature good ventilation for cooling.
4.1.2
4.1.24.1.2
4.1.2 Wiring procedure
Wiring procedureWiring procedure
Wiring procedure
When laying the wires, "physically" separate the power from the control section. The proximity of the wiring of these two sections will, in most
cases, cause problems of induced disturbance or, over time, malfunctions or damage to the components. The ideal condition involves running the two
circuits in two separate cabinets. Sometimes, however, this is not possible, and consequently the power section and the control section need to be placed in
two separate areas inside the same panel. For the control signals, use shielded cables with twisted wires.
If the control cables need to cross over the power cables, the point of crossing should have angles of intersection as near as possible to 90 degrees; never
run the control cables parallel to the power cables.
CAREL suggests to pay attention to the following wornings:
• Use cable ends suitable for the corresponding terminals. Loosen each screw and insert the cable ends, then tighten the screws. When the operation is
completed, slightly tug the cables to check they are sufficiently tight;
• separate as much as possible the probe and digital input signal cables from the cables carrying inductive loads and power cables to avoid possible
electromagnetic disturbance. Never insert power cables (including the electrical cables) and probe signal cables in the same conduits. Do not install the
probe cables in the immediate vicinity of power devices (contactors, circuit breakers or similar);
• reduce the path of the probe cables as much as possible, and avoid spiral paths that enclose power devices;
• avoid touching or nearly touching the electronic components fitted on the boards, so as to avoid electrostatic discharges (extremely dangerous) from the
operator to the components.
• if the power transformer secondary is earthed, check that the earth wire corresponds to the wire that runs to the controller and enters terminal G0; this
must be followed for all devices connected to the pCO;
• when fastening the cables to the terminals, do not push the screwdriver with excessive force, so as to avoid damaging the pCO;
• for applications subject to considerable vibrations (1.5 mm pk-pk 10/55 Hz), secure the cables connected to the pCO around 3 cm from the connectors
using clamps;
• if the product is installed in industrial environments (application of the EN 61000-6-2 standard), the length of the connections must be less than 30m;
• all the very low voltage connections (analogue and digital inputs at 24 Vac/24Vdc, analogue outputs, serial bus connections, power) must have reinforced or
double insulation from the mains;
• in residential environments, the connection cable between the pCO and the terminal must be shielded.
• there is no limit to the number of wires that can be connected to an individual terminal. The only limit concerns the maximum current running through
the terminal: this must not exceed 8 A;
• the maximum cross-section of the wires connected to the terminals is 2.5 mm2 (12 AWG);
• the maximum value of the twisting moment (or torque) for tightening the screws on the terminal (tightening torque) is 0.6 Nm.
4.1.3
4.1.34.1.3
4.1.3 Warnings
WarningsWarnings
Warnings
• Installation must be performed according to the standards and legislation in force in the country where the appliance is used;
• for safety reasons, the appliance must be housed inside an electrical panel, so that the only accessible part is the display and the keypad;
• in the event of malfunctions, do not attempt to repair the appliance, but deliver the item directly to CAREL;
4.1.4
4.1.44.1.4
4.1.4 Anchoring the pCO
Anchoring the pCOAnchoring the pCO
Anchoring the pCO
The pCO should be installed on a DIN rail. To secure the controller to the DIN rail, simply rest the device on the rail and press lightly. The rear tabs click into place to
fasten the device to the rail. To remove the device, use a screwdriver as a lever in the corresponding opening to lift the locking tabs. The tabs are held in the locked
position by return springs.

Carel pCO3 series Specifications

General

Brand	Carel
Model	pCO3 series
Category	Controller
Language	English