Programming and Operation, continued
25
Selecting Valve Types
Valve types refer to the electric requirements of
magnetic solenoids. There are 10 Valve Types
already programmed into the MDC2 Controller.
The first five Valve Types are used by decoders
controlling irrigation Programs and will start
master valves and pumps. The last five control non-
irrigation Programs (such as activating auxiliary
alarms, etc.) and will not start pumps. Irrigation
Valve Types use switch code 59F350. If setting up a
normally open master valve that needs to close on
an alarm, the switch code is 39F350. Non-irrigation
Valve Types use a switch code of 3FFA20 when
using a relay. These default switch codes are used
for Rain Bird
®
24 VAC solenoids.
Note: The number of solenoid (valve) outputs varies
with the Rain Bird
®
Decoders in your system. For
example, FD-102TURF and FD-202TURF can operate
one or two solenoids on each output. Whereas
FD-401TURF and FD-601TURF can only operate one
solenoid on each output.
Note: If your system uses Standard Rain Bird
®
24 VAC solenoids, do not change any of these
settings. For the New Rain Bird
®
24 VAC (White
strip wires) solenoids the recommended settings are
59F370. Please move to the next section, Naming
the Field Decoders.
Note: If your system operates solenoids that are
not Rain Bird
®
, do not change the default switch
codes before verifying if the solenoids open. If the
solenoids do not open, you may need to change the
Activation Time and/or Holding Voltage. Please
see Appendix II: Selecting Electrical Codes for
Solenoids on page 93.
Naming the Field Decoders
You must give each field decoder in your system a
name (up to six characters) so that you can easily
identify that decoder and pinpoint its location.
For example, MAPLE1 (or the shorter M1) could
represent the first decoder facing Maple Street and
ELM5 (or E5) could identify the 5th decoder on Elm
Street. It is easier if you make the name as short and
descriptive as possible.
1. From the Main Menu, move the indicating
arrow to 1. Set-up Data and select OK to reach
the Set-up Data Menu.
2. Move the indicating arrow to 2. Decoders and
select OK to reach the list of decoders.
Note: The indicating arrow points to the first
available space. If you want to change information
about a specific decoder already programmed,
move the indicating arrow to the decoder you want
to change.
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