Gattetti LCA User Manual page 35

Water chillers and heat pumps
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RS485 serial board technical characteristics
Power supply voltage:
Absorbed current:
Storage conditions:
Operating conditions:
Card dimensions:
Protection index:
Environmental pollution:
Surface temperature limits:
Classif. according to the protection
against the electric shocks:
Categ. of heat and fire resistance:
PTI of the of the insulating materials:
Class and structure of the software:
Serial output:
Protection against the electric
shocks:
Example of µchiller network:
RG66000889-REV.00
5Vdc ±10% from the µchiller through plug-in connector
70 mA
-10T70 (-10÷70°C), rH <90% not condensing
T65 (0÷65°C), rH <90% not condensing
50x50 mm
IP00
normal
as for operating temperature
to be incorporated into Class I or II equipment
D
250V
A
Connector 3-way screw terminals for cables with 0.2mm
2
1.5mm
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
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.
35
2
min. section and

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