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
Parameter
Parameter
Parameter
Value/unit
Value/unit
Value/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