VAMP 150 - Page 49

VAMP Ltd
Motor protection relay
Technical Description
VAMP 150
VM150.EN005 Vamp 24h support phone : +358 (0)20 753 3264
21
N>motorstartinhibit
I>trip
N>alarm
I>start
T1 A1
VAMPrelay
Outputmatrix
+
- -
+
+
M
Open
coil
Close
coil
STOP START
NStageAppl_40
Figure 2.2.8-1. Application for preventing too frequent starting, using the
N> stage. The relay A1 has been configured to be “normal closed”. The start
is just an alarm telling that there is only one start left at the moment.
Parameters of the frequent start protection:
N> (66)
N> (66)N> (66)
N> (66)
Parameter
ParameterParameter
Parameter Value/unit
Value/unitValue/unit
Value/unit
Mot strs Motor starts in last hour Measured
value
T min Elapsed time from motor start
Sts/h Max. starts in one hour Setting
values
Interval min Min. interval between two
consecutive starts
SCntr Start counter (Start) reading
TCntr Trip counter (Trip) reading
1StartLeft 1 start left, activates the N>
start signal
MaxStarts Max. start trip, activates the
N> trip signal
Descr
Interval Min. interval between two
consecutive starts has not yet
been elapsed, activates the N>
trip signal
Tot Mot
Strs
Number of total motor starts
Mot Strs/h Number of motor starts in last
hour
Recorded
values
El. Time
from mot
Strt
min Elapsed time from the last
motor start