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 Signal Ground ( 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.
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