VAMP 257 - Page 73

VAMP Ltd Feeder and motor manager
Technical description
VAMP 257
VM257.EN002 VAMP 24h support phone : +358 (0)20 753 3264
31
Definite operating time Unit:
Seconds
t>
t>>
t>>>
Param.
t>>>>
Range
0.06 ... 300.00
Default
0.3
Inverse time multiplier (only for I
dir
> and I
dir
>>)
0.05 ... 20.00
(IEC)
(IEEE)
(IEEE2)
Param.
k
Range
0.5 … 20.00
(RI)
Default
1.0
Event enabling Range:
Enabled/disabled
S_On
Start on event
Enabled
S_Off
Start off event
Enabled
T_On
Trip on event
Enabled
Param.
T_Off
Trip off event
Default
Enabled
Inverse operation time formulas (only for I
dir
> and I
dir
>>)
Curve family: IEC Parameters:
A, B
1−
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
=
B
pickup
I
I
Ak
t
Standard delays A B
NI Normal inverse 0.14 0.02
EI Extremely inverse 80 2
VI Very inverse 13.5 1
LTI Long time inverse 120 1