Weq EBA Guia De Instalacion/Configuracion página 6

3.2 Analog and digital signal connections
The cables used to connect the digital and analog signals must have a shielded cross
section of 0.5 to 1.5 mm (20 a 4 AWG), maintaining a minimum distance between the
control and power wiring connections of CC9 board, according to the Table 7.
Table 7: Minimum separation distance between signal
cables and control/power wirings of CC9 Board
(110 Vac, 120Vac, relays, contactor solenoids, etc.).
Recommended
Model of
wiring length
drives
330 ft (100m)
24 A
330 ft (100m)
100 ft (100m)
28 A
100 ft (100m)
ATTENTION
The cable specifications and ground connections must be fulfilled for ensuring the
correct board operation.
3.2.1 Grounding
- Digital signals
CFW-09 frame.
- Analog signals
(sensors, PLC analog inputs and outputs, etc.) In these cases the manufacturer
recommendations must to be respected.
ATTENTION
The device ground point must be the same of the inverter grounding.
Differences on grounding generates voltage differences that cause interferences
in the analog signals.
3.2.2 Digital signal configurations
The input DI7 and the outputs DO1 and DO2 can be configured according to the drive type. Depending on the application, they may be:
- Active at high logic level
4
Figure 7: Configuration of digital inputs and
outputs ACTIVE at HIGH logic level
2
Minimum
Separation
distance
4 in (10cm)
10 in (25cm)
4 in (10cm)
10 in (25cm)
- The cable shield must be connected to the protection ground of the
- The cable shield must be connected on the side of the device
Figure 6: Appropriate cable to connect
analog and digital inputs/outputs and right
shield connection
- Active at low logic level
Figure 8: Configuration of digital inputs and
outputs ACTIVE at LOW logic level