VAMP 257 - Page 181

VAMP Ltd Feeder and motor manager
Technical description
VAMP 257
VM257.EN002 VAMP 24h support phone : +358 (0)20 753 3264
139
Thermal overload stage T> (49)
Setting range: 0.5 – 1.20 xI
mot
(step 0.01)
Alarm setting range: 60 – 99 % (step 1%)
Time constant Tau: 2 – 60 min (step 1)
Cooling time coefficient: 1.0 – 5.0 xTau (step 0.1)
Max. overload at +40 °C
70 – 120 %I
mot
(step 1)
Max. overload at +70 °C
50 – 100 %I
mot
(step 1)
Ambient temperature
-55 – 125
°C (step 1°)
Resetting ratio 0.95
Accuracy:
- operating time ±5% or ±1 s
Unbalance stage I
2
> (46)
Setting range: 10 – 70% (step 1%)
Definite time characteristic:
- operating time 1.0 – 600.0s s (step 0.1)
Inverse time characteristic:
- 1 characteristic curve
- time multiplier
Inv
1 – 50 s (step 1)
Start time <300 ms
Reset time <300 ms
Reset ratio 0.95
Inaccuracy:
- Starting
- Operate time
±3% of the set value or 0.5% of the rated value
±5% or ±300 ms
Incorrect phase sequence I
2
>> (46)
Setting: 80 % (fixed)
Operating time <120 ms
Undercurrent protection stage I< (37)
Current setting range: 20 – 70 %I
mode
(step 1%)
Definite time characteristic:
- operating time 0.3 – 300.0s s (step 0.1)
Block limit: 15 % (fixed)
Starting time <300 ms
Resetting time <300 ms
Resetting ratio 1.05
Accuracy:
- starting ±2% of set value
- operating time ±1% or ±200 ms
Unbalance / broken connector protection I
2
/I
1
> (46)
Settings:
- Setting range I
2
/ I
1
> 2 – 70 %
Definite time function:
- Operating time 1.0 – 600.0 s (step 0.1 s)
Start time <300 ms
Reset time <300 ms
Reset ratio 0.95
Inaccuracy:
- Starting ±3% of the set value or 0.5% of the rated value
- Operate time ±5% or ±300 ms