
© Brüel & Kjær Vibro
● C106834.002 / V06 ●
Page 47 of 110
Technical alterations reserved!
Brüel & Kjær Vibro
│
Instruction VC-1800 Series
Installation and Operation of VIBROCONTROL
18xx
EN
UNRESTRICTED DOCUMENT
6.20 LEDs
Term.
active
A blue LED marked "Term. active" on the front of
the VC-18xx indicates whether a 120-
Ω terminating
resistor is activated for the RS-485 connection. This is
required in case the VC-18xx in question is the last
device in a chain of devices on an RS-485 bus.
The termination resistor is (de-)activated by sliding
(left/right) a very small button that can be found behind a
small hole at the front of the enclosure.
Ch.
1/2/3/4
Green:
•
Normal operation. No events.
Yellow:
•
Alert alarm
Red
flashing:
•
Broken cable/short circuit
Red:
•
Danger alarm
OK:
Green:
•
Normal operation.
No events.
Green flashing:
•
Setup Download
Yellow flashing:
•
Self-test
Red
flashing:
•
System error
Red:
•
Broken cable/short circuit
(with additional red flashing channel LED).