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Advanced Energy
6-14
Table
6-3. No termination or biasing (default setting) (Continued)
Termination
Disabled
Enabled
Low
(JIO)
x
TO SET NETWORK BIASING
Biasing
sets
the
voltage
levels on the data lines
of
an inactive or
idle
network.
At
least one device
on
the network
must
provide biasing.
On
sho1ter
networks with
fewer installed
devices,
biasing may
only be
needed
on
the
device
fmthest
away
from
the
master.
Longer networks that are te1minated
on both ends
may require
two
devices to have their biasing
enabled.
To Set the Jumpers to Use the Inverter's Built-in Biasing
1.
Move the jumper to the upper pair
of
J7 pins labeled
High
.
2
.
Verify
that the
Jl
1
jumper
is
in the lower NC
position.
3.
Move the jumper to the upper pair
of
Jl
0 pins labeled Low.
Table
6-4.
Biasing enabled
Termination
Disabled
Enabled
High
(J7)
x
Line
(Jll)
x
Low
(JIO)
x
TO TERMINATE THE NETWORK AND ENABLE BIASING
As an
alternative,
an end inve1ter on the network can require both te1mination
and
biasing
to be
enabled.
Set
the following jumpers to configme the
inve1 ter
for both
settings.
1.
Move the jumper to the upper pair
of
J7 pins labeled
High
.
2
.
Move the jumper to the upper pair
of
Jl
1 pins labeled Line
3.
Move the jumper to the upper pair
of
Jl
0 pins labeled Low.
Table
6-5. Biasing and termination enabled (for end device)
Termination
Disabled
Enabled
High
(J7)
x
Line
(Jll)
x
Low
(JIO)
x
Data Monitoring and Controls
570-1001793-0SB
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Troubleshooting
