Atlas Copco Power Focus 4000 - Page 221

Fieldbus
9836 3123 01 221 (428)
Fieldbus connector
Connector 5-pin 5.08mm detachable screw terminal.
Pin
Color
code
Description
1
Black
V-
2
Blue
CAN-L
3
Bare
Shield
4
White
CAN-H
5
Red
V+
V- and V+ must come from a fully isolated power supply. That means that the voltage cannot
have any reference to ground. This is to prevent the bus from interference caused by ground
loop problems. If V- and V+ are connected from a Power Focus internal 24VDC (screw
terminal) the same connection shall only power one DeviceNet module. This means that the
DeviceNet cable connected to PF must not include voltage wires. Normally there is a central
power supply that feeds all nodes in the network.
Power consumption
Current consumption at 24 VDC (V- to V+) is max 70 mA at power up and 25-30 mA continuously.