Commubox FXA291
Endress+Hauser 3
Wiring
Connection • For computers: USB 1.1 and 2.0 compatible, 4-pole USB connector, type A
• For transmitters: CDI connectors, short-circuit proof, reverse polarity protection
!
Note!
When delivered, the USB and adapter cables are fully wired on the box side and are fixed in place with a cable
gland.
Supply voltage • Voltage range: from the USB interface of the PC, typically 5VDC
• Field devices powered via VCC up to 100mW, reverse polarity protection
Intrinsically safe signal circuit For connecting an intrinsically safe circuit with explosion protection [EEx ia] IIC with:
• Connection voltage: < 7 VDC
•U
m
: 260V
!
Note!
With Commubox FXA291 the intrinsically safe and the non-intrinsically safe connection are protected.
Therefore, you can connect an Ex device to the intrinsically safe side of Commubox FXA291 even if a non-Ex
device was connected before. The Commubox will not lose its Ex approval.
Performance characteristics
Communication Communication between computer and FXA291:
• Baudrate: 2400 to 115.2k
• Data bits: 8
• Stop bits: 1
• Parity: none
• Start bits: 1
• Duplex communication
Environment
Ambient temperature range -20 to +60 °C (-4 to +140 °F)
Storage temperature -40 to +85 °C (-40 to +185 °F)
Ingress protection IP51, NEMA/type 3
Relative humidity 0 % to 95 % (no condensation)
To Next Page
Loading...
