IOM / @DNOVA-µAC-0907-E - Page
INSTALLATION
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
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.
Fig. 3
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)
ssR digital outputs - connector 1
Out1
Compressor
Out2
Heating element
Out3
(/2, Hc) Damper ON/OFF
Out4
Damper - (/2, Hc)
Out5
Supply fan
Relay digital outputs - connector 3
Out 6
Alarm (HF)
Out 7
Alarm (HA) Rotation control (H2)
Analogue outputs - connector 1
Y1
Damper output (/2,Hc)
Y2
Condensation fan (/1,/2,Hb,Hc)
key
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
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
2
;
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.
clock opz.
serial Rs485 opz.
jumper
B3 selection
0 + 1 Vdc
fuse 800 mAt
