Rockwell-automation 1560E SMC Flex Smart Motor Controller Manual de usuario Pagina 25

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 198
  • Tabla de contenidos
  • SOLUCIÓN DE PROBLEMAS
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 24
Product Overview 1-15
%5-"%.0*UNE
Table 1.A –PTC Input Ratings
Response Resistance 3400 ± 150
Reset Resistance 1600 ± 100
Short-circuit Trip Resistance 25 ±10
Maximum Voltage at PTC Terminals (R
PTC
=4k)<7.5V
Maximum Voltage at PTC Terminals (R
PTC
= open) 30 V
Maximum Number of Sensors 6
Maximum Cold Resistance of PTC Sensor Chain 1500
Response Time 800 ms
The following figure illustrates the required PTC sensor characteristics,
per IEC-34-11-2.
10
20
4000
250
100
550
1330
TNF-20K
TNF- 5K
-20°C
C
TNF
TNF+ 5K
TNF+15K
10
20
4000
250
100
550
1330
10
20
4000
250
100
550
1330
10
20
4000
250
100
550
1330
TNF-20K
TNF- 5K
-20°C
C
TNF
TNF+ 5K
TNF+15K
Figure 1.13 – PTC Sensor Characteristics per IEC-34-11-2
PTC Trip
The MV SMC-Flex will trip with a PTC indication if:
No other fault currently exists
PTC protection is enabled
The resistance across terminals 23 and 24 is either greater than the
relay’s response resistance or less than the short-circuit trip resistance.
Vista de pagina 24
1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 197 198

Comentarios a estos manuales

Sin comentarios