Installation; Valve Operation In Parallel And Complementary Mode - Carel EVD evolution User Manual

ENG

2.4 Installation

For installation proceed as follows, with reference to the wiring diagrams:
1. connect the probes: the probes can be installed a maximum distance of
10 metres away from the driver, or a maximum of 30 metres as long
as shielded cables are used with minimum cross-section of 1 mm2
(connect all the shields to the earth spade connector
2. connect any digital inputs, maximum length 30 m;
3. connect the power cable to the valve motors: use 4-wire shielded cable
AWG 22 Lmax=10 m or AWG 14 Lmax=50m; failure to connect the
valve motors after connecting the driver will generate the "EEV motor
error" alarm: see paragraph 9.5;
4.
carefully evaluate the maximum capacity of the relay output specifi ed in
the chapter "Technical specifi cations";
5.
if necessary use a class 2 safety transformer, suitably protected against
short-circuits and voltage surges. For the power ratings see the
general connection diagram and the technical specifi cations.
6.
the minimum size of the connection cables must be 0.5 mm
7. power up the driver in the event of 24 Vdc power supply the drive will
close the valve.
Important: in the event of 24 Vdc power supply set the "Power supply
mode" parameter=1 to start control. See par. 6.1.
8.
program the driver, if necessary: see the chapter "User interface";
9. connect the serial network, if featured: follow to the diagrams below for
the earth connection.
Case 1: multiple drivers connected in a network powered by the same
transformer. Typical application for a series of drivers inside the same
electrical panel.
230 Vac
24 Vac
2 AT
2 AT
Case 2: multiple drivers connected in a network powered by diff erent
transformers (G0 not connected to earth). Typical application for a series
of drivers in diff erent electrical panels.
230 Vac
230 Vac
24 Vac
24 Vac
2 AT
2 AT
Case 3: multiple drivers connected in a network powered by diff erent
transformers with just one earth point. Typical application for a series of
drivers in diff erent electrical panels.
230 Vac
230 Vac
24 Vac
24 Vac
2 AT
2 AT
"EVD evolution" +0300005EN - rel. 3.1 - 25.07.2011
);
2
2 AT
Fig. 2.d
230 Vac
24 Vac
2 AT
Fig. 2.e
230 Vac
24 Vac
2 AT
Fig. 2.f
Important: avoid installing the driver in environments with the
following characteristics:
•
relative humidity greater than the 90% or condensing;
•
strong vibrations or knocks;
•
exposure to continuous water sprays;
•
exposure to aggressive and polluting atmospheres (e.g.: sulphur
and ammonia fumes, saline mist, smoke) to avoid corrosion and/or
oxidation;
•
strong magnetic and/or radio frequency interference (avoid installing
the appliances near transmitting antennae);
•
exposure of the driver to direct sunlight and to the elements in general.
Important: When connecting the driver, the following warnings
must be observed:
•
if the driver is used in a way not specifi ed in this manual, the level of
protection is not guaranteed.
•
do not operate the controller for extended periods without connecting
the valve;
•
incorrect connection to the power supply may seriously damage the
driver;
•
use cable ends suitable for the corresponding terminals. Loosen each
screw and insert the cable ends, then tighten the screws and lightly
tug the cables to check correct tightness;
•
separate as much as possible (at least 3 cm) the probe and digital
input cables from the power cables to the loads so as to avoid possible
electromagnetic disturbance. Never lay power cables and probe cables
in the same conduits (including those in the electrical panels);
•
install the shielded valve motor cables in the probe conduits: use
shielded valve motor cables to avoid electromagnetic disturbance to
the probe cables;
•
avoid installing the probe cables in the immediate vicinity of power
devices (contactors, circuit breakers, etc.). Reduce the path of the
probe cables as much as possible and avoid enclosing power devices;
•
avoid powering the driver directly from the main power supply in the
panel if this supplies diff erent devices, such as contactors, solenoid
valves, etc., which will require a separate transformer.
pCO
2.5 Valve operation in parallel and
complementary mode
EVD evolution can control two CAREL valves connected together
(see paragraph 4.2), in parallel mode, with identical behaviour, or in
complementary mode, whereby if one valve opens, the other closes by
the same percentage. To achieve such behaviour, simply set the "valve"
parameter ("Two EXV connected together") and connect the valve motor
power supply wires to the same connector. In the example shown below,
for operation of valve B_2 with valve B_1 in complementary mode simply
swap the connection of wires 1 and 3.
2 CAREL valves connected in parallel
mode
pCO
CAREL E
VALVE A_1
CAREL E
VALVE A_2
pCO
10
2 CAREL valves connected in com-
plementary mode
X V CAREL E X V
VALVE B_1
4 4
2 2
3 3
1
1
X
V CAREL E X V
VALVE B_2
4 4
2 2
3 1
1 3
1 3 2 4
1 3 2 4