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3
M
N
S
S
O
p
3
M
N
S
S
O
p
i
i
Message
No Load
Underload
Underload CosPhi
TOL
Stall
Phase Failure
Phase Unbalance
Undervoltage
Control Voltage
Supervision
PTC Supervision
PTC Supervision
Short Circuit
PTC Supervision
Open Circuit
6
6
2
2
e
r
a
t
i
o
n
e
r
a
t
i
o
n
Relates to
Motor
Starter
System
X
X
X
X
X
X
X
X
X
X
X
X
ABB MNS iS System Setup & Operation Quick Guide / System Release 6.0 – Rev.2 / Aug. 2011
Alarm condition
Highest measured phase
current is below the
parameterized Alarm level.
Highest measured phase
current is below the
parameterized Alarm level
I
.
Lmax
Cos Phi value is below the
parameterized Alarm level.
Alarm level reached
% of thermal image
Motor current higher than
parameterized Alarm level.
Ratio of highest phase
current I
compared to
Lmax
lowest phase current I
Lmin
lower than parameterized
Alarm level.
Ratio of highest phase
current I
compared to
Lmax
lowest phase current I
Lmin
higher than parameter-ized
Alarm level.
Phase voltage is lower than
parameterized Alarm level
/ U
ratio U
Lmin
n
Control voltage dip
< 95% U
(fix)
n
Alarm level reached
R = 1650 (fix)
n.a.
n.a.
Trip condition
Highest measured phase
current is below the
parameterized Trip level.
Highest measured phase
current is below the
parameterized Trip level
I
.
Lmax
Cos Phi value is below the
parameterized Trip level.
Trip level reached
100% of thermal image
(fix)
Note:
DCS TOL-Bypass
command available to set
Trip level to 200% of
Thermal Image. This is not
applicable for TOL Exe
protection function!
Motor current higher than
parameterized Trip level.
Ratio of highest phase
current I
compared to
Lmax
is
lowest phase current I
lower than parameterized
Trip level.
Ratio of highest phase
current I
compared to
Lmax
is
lowest phase current I
higher than parameterized
Trip level.
Phase voltage is lower than
parameterized Trip level
ratio U
/ U
Lmin
n
Control voltage dip
< 65% U
(fix)
n
Trip level reached
R = 3600 (fix)
PTC value lower than
parameterized Short Circuit
Trip level R
short circuit
PTC value higher than fixed
Trip level for open circuit
R
≥ 10k (fix)
open circuit
is
Lmin
is
Lmin
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