Eaton 9372-FB-P Series Instruction Manual page 23

THE POWER LED WILL NOT LIGHT UNTIL THE VOLTAGE AT THE BARRIER HAS
RISEN TO A VALUE OF AT LEAST 15.7V, BUT COULD REMAIN LIT EVEN AFTER THE
VOLTAGE HAS DROPPED TO AROUND 13.0V. DO NOT ASSUME THE POWER LED
If the green Power LED is not lit, check:
• the polarity and integrity of the trunk cable connections to the enclosure.
• that the d.c. supply powering the incoming trunk is operating correctly.
Spur LEDs
The following tables show the possible modes of operation of the spur LEDs on the
barriers and their associated meanings.
Colour
Green steady
Green flashing
Green pulsed
Yellow flashing
Yellow steady
Red pulsed
Red steady
Notes:
Two flashes per second
1
Short pulses every two seconds
2
937X-FB Fieldbus Barrier enclosures are designed to operate reliably in
industrial environments and comply with international standards for immunity
to electromagnetic raditation. However, damage may occur if the apparatus
is exposed to extreme levels of radiated electrical noise, for example from
"walkie-talkie" radios, or electric arc-welding. If local welding activity is
unavoidable, power should first be removed from the Fieldbus Barrier.
INM 9370-RD Rev 5
INDICATES A VOLTAGE OF 16V OR MORE.
Description
Active spur, OK
Active spur, open circuit
1
Standby spur, OK
2
Active spur, short circuit, current limit
1
Active spur, short to shield
Standby spur, internal fault
2
Active and standby spurs, internal fault
CAUTION
NOTE
Visual
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