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INSTALLATION
InstALLAtIon
Initial start-up procedure
To install the control, proceed as indicated below, with
reference to the connection diagrams provided.
1. connect the probes and power supply: the probes can be
located up to a maximum distance of 50 metres from the
control, using cables with a minimum cross-section of 1mm
to improve immunity to disturbance it is recommended to use
shielded cables (connect one end only of the shield to the
ground on the electrical panel).
2. Program the instrument: for a more in-depth description
see chapter 5, "Programming".
3. Connect the actuators: it is suggested to connect
connectors 1 and 3 only after having programmed the control.
On this subject, iavoid to connect loads exceeding the relay
rating.
Meaning of the inputs and the outputs
The following table (P. 6) describes the meaning of the inputs and the outputs according to the type of machine selected.
telecom= precision unit complete with condenser and without humidifier.
Inputs and outputs I/o
D
igital inputs connector 2
ID1
Remote ON/OFF (HE=1)
ID2
Flow controller
ID3
Filter dirty
ID4
Heat. Element safety
ID5
External alarm/ input for rotation of a series of
units rotation of a series of units (depends on
Pb-H2-HA)
ID6
No power alarm
ID7
High press.C1
ID8
Low press. C1
ID9
Comp. thermal
ID10
Fan thermal (H5)
Analogue inputs - connector 2
B1
Inlet temp. Temp.
B2
External air temp. for free cooling (/1,Hc)
B3
Condens. press. (/2,Hd,Hb)
B4
Supply temp. (/3=1)
the I/o (Input/output) board
Fig. 3 shows the I/O board.
With reference to this figure, we can see:
- in the lower part the Molex connectors (1 - 2 - 3), for the
main connections;
;
- in the upper part, the 2nd male connector from the left, to
2
insert the key for programming the µAC or copy the existing
data;
- the fitting for the clock board (optional);
- the fitting for the RS485 serial board (optional);
- in the centre of the board, the jumper for selecting the hardware
of probe B3 (4÷20mA/ 0÷1Vdc), with default 0÷1Vdc.
key
clock opz.
serial Rs485 opz.
B3 selection
jumper
0 + 1 Vdc
fuse 800 mAt
Fig. 3
ssR digital outputs - connector 1
Out1
Out2
Out3
Out4
Out5
Relay digital outputs - connector 3
Out 6
Out 7
Analogue outputs - connector 1
Y1
Y2
Compressor
Heating element
Damper+(/2, Hc) Damper ON/OFF
Damper - (/2, Hc)
Supply fan
Alarm (HF)
Alarm (HA) Rotation control (H2)
Damper output (/2,Hc)
Condensation fan (/1,/2,Hb,Hc)
IOM / @DNOVA-µAC-0907-E - Page
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