VAMP 257
Feeder and motor manager
Technical description
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52
VAMP 24h support phone : +358 (0)20 753 3264
VM257.EN002
Figure 2.3.15-1. Thermal overload protection
Setting parameters of thermal overload protection:
T> (49)
Parameter Value
Unit
Default Description
T>
0.50 … 1.20 xImode
1.06
Setting value T> (=k x In)
Alarm
60 … 99
%
90
Alarm setting T>
Tau
2 … 60
min
60
Heating/cooling time
constant
Tau2
1 … 10
xTau
1
Cooling time multiplier for
Tau
I
MAX40
0.7 … 1.2
xImode
1
Relative allowed overload
when
Θ
AMB
is +40
°
C
I
MAX70
0.5 … 1
xImode 0.78
Relative allowed overload
when
Θ
AMB
is +70
°
C
S_On
Enabled;
Disabled
- Enabled Start
on
event
S_Off
Enabled;
Disabled
-
Enabled Start off event
T_On
Enabled;
Disabled
- Enabled Trip
on
event
T_Off
Enabled;
Disabled
-
Enabled Trip off event
NOTE!
Setting the values of I
MAX40
, I
MAX70
and Tau2 is possible only in
motor protection mode.
Measured and recorded values of thermal overload
protection:
T> (49)
Parameter Value Unit Description
Measured
value
T
%
Temperature
rise
Display
T>
A
Setting value T>
SCntr
Cumulative start counter
Recorded
values
TCntr
Cumulative
trip
counter
