14
Connecting Station Modules
The Pro-C controller is supplied with a
factory-installed base module for up to 3
stations. Additional modules may be added in
increments of 3 stations (PCM-300) or a single
9-station (PCM-900) to expand the controllerʼs
station capability to 15 stations. Additional
modules are sold separately.
Note: The use of a PCM-900 to expand your
controller to 15 stations requires that
one PCM-300 be installed in the first slot
(stations 4-6) and the PCM-900 in the
upper two slots.
The Pro-C utilizes automatic module
recognition firmware (Pro-C controllers manu-
factured Nov. 2003 and after) to identify when
PCM modules are installed or removed from
the controller. This feature will recognize the
correct number of stations without having to
reset or cycle power to the controller.
The Pro-C controller is designed with a
simple to use Easy-Lock™ feature that assures
that the modules are firmly secured into the
controller. The Easy-Lock can lock or unlock
all modules at one time by simply pushing the
Easy-Lock slide.
Note: The Easy-Lock feature was added to
Pro-C controllers dated coded 12/01/02
or newer.
1. Slide the Easy-Lock into the
unlock position. Insert the
module(s) into the appropri-
ate sequential position in the
back of the controller.
2. Once all of the modules
are in place, slide the
Easy-Lock into the locked
position to secure all the
modules into the controller.
3. The Pro-C will automatically recognize the
correct number of stations. It is not neces-
sary to press the reset button or cycle the
power to the controller.
Connecting the Battery (Optional)
Connect a 9-volt
alkaline
battery
(not included) to the battery terminals
and place in the battery compartment in the
controller cabinet. The battery allows the
user to program the controller without
AC
power. Watering will not occur without
AC
power. Since this controller has non-volatile
memory, the program clock and calendar will
be retained during a power outage even if no
battery is installed.
NOTE: Complete this section only if you have
a master valve installed. A master valve is a
normally closed valve installed at the supply
point of the main line that opens only when the
automatic system is activated.
Connecting a Master Valve
1. At the Master Valve, attach the common
wire to either solenoid wire of the valve.
Attach a separate control wire to the
remaining solenoid wire.
2. Route the wires into the controller via the
field wire conduit.
3. Connect either wire from Master Valve to
the
P/MV
terminal. Connect remaining
wire to the
C
(Common) terminal.
INSTALLATION
(continued)
9 Volt Battery
Valve Common Wire
Valve 1
Valve 2
Valve 3
Valve 4
Valve
Wires
Master Valve
Master Valve Wire
