Airwell PAC BT Series, Installation And Operating Manual

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27
5 - ELECTRICAL CONNECTIONS
0
ON
1
4
4
9
9
ON
1
2
0
1 2 0
Example address 49:
Example address 120:
3 J
3 S
4 S
ON
ON
S1
S 2
ON
RS485
LR
LV
J 1
G
N
D -
+
5 S
Inside the 485 network must be polarized only one
board, usually is polarized tha master, i.e. the PC; in
this case S2 = OFF
= polarization NO
If more cards are polarized, faults occur
J1 - RS 485 serial
J3 - TTL serial
LV = green led :
ok
LR = red led quick flashing:
wrong address
faulty module
5.9 - SUPERVISOR (option)
Remote system call
Enables the unit to be turned on in response to an
environment heating signal (e.g. room thermostat)
Second remote system set point
Enables a second ambient set point to be selected to
minimise energy consumption.
The unit can be connected to an outdoor supervisor system.
In this case follow the connections as shown.
parameter description Extended description
315
Adress ModBus supervision serial address
316
BaudRate Baud Rate (0=4800 / 1=9600 2=19200)
supervision serial
317
Parity Parity 0=NO / 1=Odd 2=Even
supervision serial
HP *
↳
settings
↳
Parameters
↳
Communications
OUTDOOR UNIT
Configuration:
CONNECTIONS
N° of Section Nominal Impedance
Recommended
Ref. connection (mm
2
) capacity characteristics cable
cables Min Max pF/m

RS485
2 twisted
and shielded 0,22 0,35
<50 120
BELDEN
3105A
To use PAC BT in a MODBUS network it is necessary to
address the RS-485 MODULE by S3, S4, S5 ; allowed and
valid addresses from 1 to 127
S5 - it sets the address hundreds :
ON = 100, OFF = 0
S3 - it sets the address dozens
S4 - it sets the address units
S1 - 485 terminator : ON = termination YES
S2 - line polarizer
5.10 -
RCW15- REMOTE CONTROL WITH TOUCH
SCREEN DISPLAY, FOR BUILT-IN INSTALLATION (BOX
503) OR FOR WALL INSTALLATION.(option)
Remote user keypad, to control the unit main functions.
To use the keyboard, you need:
 Power supply 12Vdc AL12X (supplied separately)
For details, see instructions accessory.
*
The unit parameters are overwritten by RCW15 keyboard. Make the customization by using RCW15