Publicidad
AER485P1
Chiller card serial interface
Fig.1
Fig.2
8
EN
DESCRIPTION
The AER485P1 card is an accessory for the entire PCO3 control series (PCO3B
excluded), which allows the direct interface of an RS485 network. The card
provides the optical isolation of the controller in relation to the RS485 serial net-
work. The maximum achievable baud rate is 19200 baud (settable via software).
ASSEMBLY
With reference to Figs. 1 ... 4, the connection to the PCO3 is obtained
following this procedure:
remove the "serial card" of the electronic controller with a screwdriver (see
1.
Figure 1);
2.
with a pair of nippers, remove the plastic knockout section from the cover,
obtaining the opening for the 3-way connector (see Figure 2);
insert the optional card into the corresponding comb connector, taking care
3.
that the card is correctly inserted and to is in contact with the two plastic
supports of the PCO3 container (see Figure 3);
close the cover with a screwdriver, lining up the connector of the serial
4.
card with the hole on the cover (Fig. 4).
The connection to the RS485 network is obtained using the connector with
removable terminals on the card.
The meanings of the pins on the connector (Fig. 5) are indicated
by the serigraphy on the card and listed in Fig. 6.
If the card occupies the last position in the serial supervision line,
a terminating line resistor with a value of 120 Ω - 1/4 W is connected
to the terminals of pins 2 and 3 as in the diagram of Figure 7.
Technical characteristics
Cable section:
Operating conditions:
Storage conditions:
Degree of pollution:
Dimensions (mm)
Warnings. Care in handling the card
Electrical damage may occur on electronic components is almost always due to
electrostatic discharge caused by the operator. It is therefore necessary take suit-
able steps for these type of components, in particular:
•
before handling any electronic component or card, touch a grounded ob-
ject (trying to avoid touching a component is not sufficient as a discharge
of 10,000 V, which is quite easily achieved by static electricity, produces an
arc of about 1 cm);
the materials must remain in their original packaging as far as possible. If
•
necessary, remove the card from its package and place it in an antistatic bag,
without touching the back of the card with the hands;
the use of plastic, polystyrene or non antistatic bags should be strictly
•
avoided;
•
avoid at all cost the direct handling of the card from one operator to an-
other (to avoid electrostatic induction and discharges).
EN
use AWG20/22 twisted two wire shielded
cable with a 2 mm sections at the terminals:
min. 0.2 - max. 2.5.
-10T60 °C; 90 % RH.
-20T70 °C; 90 % RH.
normal.
60x29x20, (60x29: terminal strip,
20: overall width of components).
Publicidad
