YOKOGAWA FA-M3 Vitesse, Инструкция по эксплуатации

Страница: 111 / 120

<Toc> <Ind> <Appendix 1. Details on Network Configuration >
Appx.1-7
IM 34M6H28-01E
■
Special Purpose Power Supply Tap
Special purpose power supply taps are configured as shown in Figure1.6. Always use it
when there are more than two-power supply sources on a single network.
Fuse
SHIELD
V+
CAN_H
SHIELD
CAN_L
V-
power supply
Shot key diode
FAP0106.EPS
Figure 1.6 Power Supply Tap
■
Network Power Supply Configuration
Network power supply configuration depends on electricity consumption of all nodes and
by the maximum current capacity of the network cable. Please use the calculation in
configuration 1 and 2 as reference when installing the power supply.
TIP
Maximum current capacity of cables in DeviceNet is as follows.
Table 1.4 Maximum Current (amp) Based on Network Thick Cable Length
Cable length (m) 0 25 50 100 150 200 250 300 350 400 450 500
Max. current capacity (amp) 8.00 8.00 5.42 2.93 2.01 1.53 1.23 1.03 0.89 0.78 0.69 0.63
TA0104.EPS
0
0
1
2
3
4
5
6
7
8
50 100 150 200 250
Length of network (m)
Maximium current capacity (amps)
300 350 400 450 500
FAP0107.EPS
Figure 1.7 Maximum Current Available on Thick Cable DeviceNet Power Supply Bus
1st Edition : Feb.01,1999-00