FBXi Series | FBXi Operation
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Subject to change without notice
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24 V AC Power
Important: The common power connection (terminal 93) must be
connected to Earth. ABB Cylon recommend that this is done at
the 24 V AC transformer.
Auxiliary Power: 18 V DC output on 2 terminals, 60 mA total
RS-485 Port 1 (BACnet® MS/TP) screw terminal
MS/TP subnet terminator switch is located beside the port. If the switch is
towards the
icon, then termination is in and if the switch is towards the
icon then termination is out.
Sensor / RS-485 Port 2 (Cylon® room sensors or BACnet® MS/TP or Modbus
RTU)
The bus Terminator Switch is located beside the port. If the switch is
towards the
icon, then termination is in and if the switch is towards the
icon then termination is out.
Universal Inputs
When input is configured as Digital:
• LED Off: open circuit or logic 'off'
• LED On: logic 'on'
When input is configured as Resistor/thermistor:
• LED Off: valid resistance connected (Note: 0 Ω is counted as
valid)
• LED Slow blink: resistor/thermistor not connected
When input is configured as Analog:
• LED intensity is modulated by the analog signal
When the LED is blinking:
• Fast blink indicates error condition
• Two short flashes followed by a value* indicates the input is in
an override state (overridden by CXpro
HD
).
*Note: The LED intensity illustrates the value measured at the input
terminals. The flash indicates that this value has been overridden.
UniPuts™ + Relay
When a Uniput channel is configured as an input, the LED signals are
identical to Universal Inputs above. When configured as an output the
following apply:
When output is configured as Digital:
• LED Off: open circuit or logic 'off'
• LED On: logic 'on'
When output is configured as Analog:
• LED intensity is modulated by the analog signal
When the LED is blinking:
• Fast blink indicates error condition
• Two short flashes followed by a value indicates the output is in an
override state (overridden by CXpro
HD
or HOA).