Viessmann VITOCAL 300, Installation And Service Instructions Manual

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Version 1
A
Over/undervoltage in %
B
Phase asymmetry in %
C
Switching delay in s
D
Operating display ("Rel")
E
Fault display phase failure/phase
sequence ("Ph")
F
Fault display asymmetry ("Asy")
H
Fault display over/undervoltage
("<>U")
LEDs explained
& LED "Rel" illuminates green:
All voltages and the rotating field
(clockwise) are healthy.
& LED "Ph" illuminates red:
The relay has responded; the rotat-
ing field is anti-clockwise.
& All LED's off:
One or several phases has/have
dropped out.
& LED "<>U" illuminates red:
Incorrect voltage on one/several
phase(s).
& LED "Asy" illuminates red:
Incorrect voltage on one/several
phase(s).
Phase monitor
(cont.)
128
Components
55
92
901
GB