ABB DCS 500B

Functional Software description
74 DCS 500 Software Description
4
3
2
10.80.6
0.5
0.4 0.30.20.10.07
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
0.98
0.9
0.8
0.7
0.5
MOTOR’S SHORT TIME OVERLOAD CURRENT FACTOR
NORMALIZED TIME CONSTANT
PARAMETER VALUE OF MODELx.TC (xxxx)
Motor’s PRELOAD factor
MOTOR TRIPPING TIME SECONDS
30
50
100
150
200
300
500 1000 2000
1000
2000
2400
900
800
700
600
500
400
300
200
100
80
70
60
50
40
30
20
10
1500
25
15
150
30
5
0
1
0
0
15
0
20
0
300
500
10
0
0
0
1.06
0.95
6
0
60
125
250
Figure 51 MODELx.TC selection curves with tripping base level 106%.