Viessmann Vitocal 350-A AWHI 351.A14, Installation And Service Instructions Manual

Page: 63 / 140

63
Version 1
A
H
B
C
G
F
E
D
D
<>U
A1
Asy
Ph
Rel
A2
L1
L2
L3
14
11
12
<>U
Asy
t
2
4
12
%
15
10
5
%
20
10
6
0.1
Fig. 60
A
Over/undervoltage in %
B
Phase asymmetry in %
C Switching delay in s
D Contact used in safety chain (N/O contact)
E
ON/OFF indicator ("Rel")
F
Fault indicator, phase failure/phase sequence "Ph"
G
Fault indicator, asymmetry "Asy"
H
Fault indicator, over/undervoltage "<>U"
LEDs explained in Fig. 60
■
"Rel" illuminates green:
All voltages and the rotating field (clockwise) are OK.
■
"Ph" illuminates red:
Relay has responded. Rotating field is anti-clock-
wise.
■
All LEDs off:
One or more phases have dropped out.
■
"<>U" illuminates red:
Incorrect voltage on one or more phases
■
"Asy" illuminates red:
Asymmetry on one or more phases
Version 2
A
B
L1
L1
L2
L3
L1
L2
L3
L1
L2
L3
L2
L3
L1 L2 L3
N 11 21
22 24
12 14
Fig. 61
LEDs explained in Fig. 61
A
Voltage "U":
■
Illuminates green if voltage is present.
B
Relay "R":
■
Illuminates yellow if the phase sequence is cor-
rect.
■
Does not illuminate if the phase sequence is
incorrect.
Installation sequence
Power supply
(cont.)
5692878
Installation