Rockwell Automation 1788-CN2FF ControlNet to Foundation Fieldbus H1 Linking Device Installation Instructions - Manual (Page 12)

12 ControlNet-to-Foundation Fieldbus H1 Linking Device
Publication 1788-IN051D-EN-P - February 2004
Connecting Power
The 1788-CN2FF requires 15-30V dc power and the cable is limited to a maximum of 3m in
length. One power supply can support several CN2FFs. The power connector is a 6-pin
screw terminal connector. The pinout for the power connector is shown in Figure 4.
Figure 4 Power Connector Pinout
Connect the primary power supply to the center V and C pair. An optional backup power
supply may be connected to the left V and C pair. The right V and C pair may be used to
chain the primary power supply to other devices. All three terminals labeled C are connected
in the CN2FF. The right two V terminals are connected in the CN2FF. These connections are
indicated on the power connector by the lines over the V and C terminals.
IMPORTANT
Make sure that the power to the network is off when
connecting the module.
v
v
v
c c
c
+
–
+
–
V
C
43170
15-30 V dc Backup
Power Supply
(optional)
15-30 V dc
Primary Power
Supply
To adjacent device
(optional connection)