- CONTINUED
- CONTINUED
HOOKING UP A PUMP
STARTRELAY
In cases where a pump is to be controlled by the master valve output,
DO
NOT
drive the pump directly from the controller. The master
station must be connected to the coil of a 24-volt AC relay, such as an
Essex #184-20105-101Z (IrriTrol part number I 1001).
HOW THE BACKUP
SYSTEM WORKS
The controller is equipped with non-volatile memory for retention of
programmed information. Once programming is complete, the control-
ler will retain your program in the event of a power failure. There will be
no need to reprogram following a power failure.
C A U T I O N : Connecting a pump to the controller without a
24-volt AC relay will damage the controller.
The pump latch relay should be set up by an electrician so that a switch
closure will activate the latch relay coil, turning on the pump. The
switch contacts of the relav should be connected to control the latch
relay coil (see figure 2). The relay should be mounted at least 5 feet from
the controller box, and the box
MUST
be grounded. Installation must
follow all local electrical wiring codes.
This controller is also equipped with a timekeeping circuit. This allows
the controller to maintain accurate time during a power failure for up to
30 days continuous via a standard 9-volt alkaline battery (not included).
NOTE:
The controller will not activate valves during
a power failure.
INSTALLING AND USING
SENSOR PORTS
C A U T I O N : DO
NOT
attempt to power the controller using
power from one phase of pump power. This can
seriously damage the controller.
The controller is equipped with two types of sensor hookups.
1.
Rain Off Sensor Hook-up: Terminals labeled “Inhibit Sensor” on the
controller’s terminal block. When the sensor contacts open, the
controller will inhibit output to all stations (all programs are affected).
If no sensor is
used, the “short” wire must be installed.
Start
Sensor Hook-up: Terminals labeled “Start Sensor” on the
controller’s terminal block. The sensor must be a “normally open” type
of sensor. When the sensor contacts close, the controller will start a
Program B watering cycle.
2.
J2
This sensor hook-up enables you to activate watering using a sensor,
such as a moisture sensor. Sensor contacts must remain closed for 30
seconds before the cycle will start.
If the sensor remains closed after completion of the watering cycle,
another cycle will be initiated. If the sensor opens before completion
of the watering cycle, no new cycle will be initiated. The cycle in
progress, however, will continue watering until completion.
POWER
0
install a sensor:
Figure 2.
Installing a Relay for a Pump
1.
Attach the sensor to the terminals of the controller’s terminal block.
Adjust the sensor according to manufacturer’s instructions.
8
Installing & Wiring the
Controller
Installing & Wiring the Controller
9
