r
If securing screws are not used, the
expansion board will
not be
grounded. This
will
result in improper operation or damage to
the
device.
NOTE
I
The
W7620
Single Zone Application Guide, Form
63-4220,
provides information
on
corresponding
terminal
designations to function
connections.
Verify that the
wiring
was
done
according
to the wiring diagram provided
and the J/O Control Function Cross-Reference provided
on
the
inside cover of
the
W7620.
Wire as follows:
1.
strip
%
inch (5 mm)
insulation
from the
conductor.
2. Insert the wire in the required terminal location
and
tighten
screw terminal.
Figure 6 illustrates the terminal arrangement in the
controller. All
controller
models are
furnished
with
a
terminal arrangement similar to
that
shown in
this
figure.
Pull
the
pair of CNAP communication cables to each
controller
on
the network and connect to the screw
terminals marked CNAP +/- (Figure 6).
I
NOTE
I
Power Wire Lengths
1. Power requircmcnts limit 24 Vac power
transmission distance. The following data can be
used in calculating load versus wire length:
Device
VA
W7620 3.9
output relay
0.5
Analog output 0.6
Power relay 4-10
2.
The power relay load rating depends on the relay
used. Power relays
can
be wired to draw coil
current
from separate 24 Vac supply.
3.
The operating voltage range for
the
W7620 is 20
to 30 Vac.
Pull a pair of 24 Vac
power
cables from either
an
isolated
or
shared transformer to each controller on
the
net work
ml connect to Terminals TR
and
TR earth-ground.