RFO810 ABB Installation base of optical fiber repeater module

RFO810 ABB Installation base of optical fiber repeater module

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HMI (Human Machine Interface)

• Handles settings with key-pad and full text display

• Holds error log and trip information after power loss

• Error log and trip log include time/date stamp from a

real-time clock

• TVOC-2 can handle two separate HMI:s (cabinet door

and on product)

• Three-meter cable included

• COM Module available using Modbus RTU

Sensor & Sensor modules

• Fiber-optic sensors not affected by electrical noise

• Pre-calibrated sensors remove need for manual

configuration

• Up to 30 detectors can be connected

Current Sensing Unit (optional)

The Current Sensing Unit (CSU) is an accessory needed only in

those few specific applications where strong light is expected

on a regular basis.

CSUs are connected with an optical fiber using light as signal

for normal current. If this was removed by accident, the system

would treat it as an over-current and trip if an arc flash is seen

of reliability reasons.

Adding a CSU will result in an additional operating time depending on the size of the over-current and the number of phases

measured. Under normal conditions the time from over-current

occurring to actuating optical output is in the region between

2 and 8 milliseconds.