Rockwell Automation 1757-FFLDC4 ControlNet Foundation Fieldbus Linking Device Installation Instructions User Manual
Page 15
ControlNet Foundation Fieldbus Linking Device 15
Publication
1757-IN022B-EN-P - August 2009
H1 Terminal Block
The linking device provides two parallel terminals on each H1 network. Use
one to connect to your fieldbus devices and the other for short-term
connection of diagnostic devices.
Do these steps to connect the H1 cables.
1. Strip about 5…7 mm (0.2…0.28 in.) of the insulation at the ends of
the cable leads.
2. Insert the stripped cable end into the desired RTB, and tighten the
screw to 0.34 N•m (3 lb•in).
3. Complete
for all H1 cables.
4. If you removed the RTB to insert the H1 cables, insert the RTB into
the corresponding socket and tighten the retaining screws.
WARNING
When you connect or disconnect the removable terminal block (RTB) with field
side power applied, an electrical arc can occur. This could cause an explosion
in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
ATTENTION
Be careful when stripping wires. Wire fragments that fall into the linking
device could cause damage.
IMPORTANT
The H1 RTBs are keyed so they fit only into the corresponding socket. Be
certain that you connect the cables to the correct RTBs.
You must use a power conditioner between your fieldbus power supply and
the devices on the fieldbus network. For more information, see the
F
OUNDATION
Fieldbus Wiring and Installation Application Guide at
publication
.