2
Electrical connections
The power supply voltages are :
•
90 .. 240 Vac – 100 .. 300 Vdc (cod. IF4E011 )
Although the meaning of the terminals are described in the picture on the
front label, here under the connections and the related terminals are listed:
•
20 - 21
Power supply
•
ETH
Ethernet connection through RJ45
•
33
Positive pole (
A+
) RS-485
•
34
Negative pole (
B-
) RS-485
•
35
S
ignal
G
round (
C
) RS-485 (Do not connect to earth
!
)
•
R1 - R2
Terminals for RS-485 line terminator 220 ohm
•
RST
Reset button - multi functions, highlighted by the flashing of the
LED "Power".
Do not use without a clear idea of what it is useful for.
For the Ethernet connection is recommended a Cat 5 cable that is certified
for speed up to 100 MB.
For RS-485, it is suggested to use a shielded cable with two twisted pairs.
The wires of one pair must be connected to + and - , the wires of the
second pair, twisted together, to terminal 35 and the screen to earth at
one side only.
