Hawk 1000 Section 3 — Hardware Checkout
Part No. 750-366 3-7
Press the <MODE> then the <NEXT> key until the screen displays BAUD RATE.
Press <MDFY> and use the <BACK> or <NEXT> key to change to 4800. Press <MDFY> to save.
Press the <NEXT> key until UNIT ADDRESS # is displayed. To change the unit address, use the <BACK>
or <NEXT> key to change to 5. Press <MDFY> to save.
Press <MODE> to exit the menu.
3.1.6
PLC
Switch
Verify
that the PLC switch is in the RUN
position
.
The boiler will not operate if the switch is in the PROG
position
.
The boiler will immediately stop if the switch is moved to the
PROG
p
osition.
The switch must be in the PROG position and the Burner switch set to OFF before the PLC program
can
be copied to a blank S D card in “
Logix
fol
d
er
”
for
m
at.
The switch can be in either PROG or RUN position when copying a PLC program from a SD
card
containing
a
Logix
folder. No other files should be present on the SD
card.
3.2 Modbus
Actuator
Checks
3.2.1 Mounting
Fasten the actuator using bolts through the mounting bracket, threaded into the face of the actuator. Be
sure
that the mounting
sur
f
ace
rests flat against the mounting bracket and is
secure.
The actuator output drive shaft should be connected to the valve shaft with a suitable coupling. The
coup
ling
may be connected with set screws and pinned in position or secured with a
k
e
y
.
3.2.2 Electrical Connections
The actuators are intended to have one cable connection on the incoming side,
(from
the previous actuator
or the Hawk panel) and one cable connection on the outgoing side, to the next actuator. The cable
connectors
and mounting plugs are keyed to ensure that the pins all line up correctly. To connect the cable,
align the
pins
and the key and push into place. Turn the threaded collar clockwise to tighten and secure
the cable.
Secure
the cables such that the cables are not pinched and do not in
ter
f
ere
with the mechanical
movement of the
actuated
devi
ces.
In some installations, codes or other requirements may call for the actuators to be hard wired. See Figure
3-7.
It is recommended that the actuator drive shaft remain decoupled
f
r
o
m
the valve
shaft (or damper level) until the actuator Modbus address is properly set, the wiring
is proven, and the direction of rotation to open the valve/ damper is
de
te
rm
ine
d
.
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