ABB CM-UFS.1 Operating And Installation Instructions page 7

IV Function diagrams
a) Over- and undervoltage monitoring
L1, L2, L3 (N)
> U
> U - Hyst.
Measuring value
< U + Hyst.
< U
t
S1
15-18, 25-28
15-16, 25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = Start-up delay prior to first grid connection and after a short-term interruption,
S1
fixed, CM-UFS.1 - 30 s, CM-UFS.2 - 1 s
t = Restart delay, CM-UFS.1 - 30 s fixed, CM-UFS.2 - adjustable
S2
b) Over- and underfrequency monitoring
L1, L2, L3 (N)
> f
> f - Hyst.
Measuring value
< f + Hyst.
< f
t
S1
15-18, 25-28
15-16, 25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = Start-up delay prior to first grid connection and after a short-term interruption,
S1
fixed, CM-UFS.1 - 30 s, CM-UFS.2 - 1 s
t = Restart delay, CM-UFS.1 - 30 s fixed, CM-UFS.2 - adjustable
S2
c) Phase failure monitoring
L1, L2, L3 (N)
Measuring value
L1, L2, L3
t
S1
15-18, 25-28
15-16, 25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = Start-up delay prior to first grid connection and after a short-term interruption,
S1
fixed, CM-UFS.1 - 30 s, CM-UFS.2 - 1 s
t = Restart delay, CM-UFS.1 - 30 s fixed, CM-UFS.2 - adjustable
S2
d) 10 minutes average value monitoring,
CM-UFS.1 (VDE version) / CM-UFS.1x
(VDE version VFR2013 / VFR2014) only
L1, L2, L3 (N)
> U
> U - Hyst.
Measuring value
t
S1
15-18, 25-28
15-16, 25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = Start-up delay prior to first grid connection and after a short-term interruption,
S1
30 s fixed
t < t < t
S2 S2 S2
t < t < t
S2 S2 S2
L1, L2 L1, L2, L3
L3
t
S2
7