RG66000889-REV.00 35
RS485 serial board technical characteristics
Power supply voltage:
5Vdc ±10% from the µchiller through plug-in connector
Absorbed current:
70 mA
Storage conditions:
-10T70 (-10÷70°C), rH <90% not condensing
Operating conditions:
T65 (0÷65°C), rH <90% not condensing
Card dimensions:
50x50 mm
Protection index:
IP00
Environmental pollution:
normal
Surface temperature limits:
as for operating temperature
Classif. according to the protection
against the electric shocks:
to be incorporated into Class I or II equipment
Categ. of heat and fire resistance:
D
PTI of the of the insulating materials:
250V
Class and structure of the software:
A
Serial output:
Connector 3-way screw terminals for cables with 0.2mm
2
min. section and
1.5mm
2
max. section
Optoinsulated asynchronous RS485
Transfer rate: 19200 baud Device maximum number: 199
Max. distance from the supervisor: 1 Km
Cable to be utilized: 1 shielded and braided couple AWG20/22
Protection against the electric
shocks:
The device assures only a functional insulation between the µchiller supply
source and the serial line; therefore the supply transformer of the µchiller must
be of the safety type.
Example of µchiller network:
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