Connecting A Rain Sensor - Toro TMC-212 User Manual

373-0319 TCM 212 Doc2 12/20/04
Connecting the Power Source (cont.)
Connecting a Rain Sensor (optional)
A rain sensor is an optional control device that connects
directly to the TMC-212 to automatically interrupt auto-
matic controller operation during rain.
A sensor bypass switch is provided to enable sensor
operation to be disabled as needed.
A sensor configuration switch enables the controller to work
with a normally-open or a normally-closed rain sensor.
When the rain sensor absorbs moisture it signals the
TMC-212 to suspend automatic watering operations.
The No Watering symbol is displayed until the sensor
drys out and automatically resets.
When the No Watering
operation will resume as programmed.
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symbol disappears, controller
5
5
6
6
1. Route the sensor wires from the device into the con-
troller housing through the access hole provided.
2. Remove the plastic insert from the Sensor terminal con-
nectors. Connect sensor wires per the instructions pro-
vided with the device.
3. Set the Sensor Configuration Switch (5) to NC
(Normally Closed) or NO (Normally Open) operation
as required by the type of sensor connected.
4. Set the Sensor Control Switch (6) as required: ENB
(enable) allows the rain sensor to interrupt watering;
DIS (disable) bypasses the rain sensor input.
IMPORTANT: Do not use the ENB switch posi-
tion with the NC switch position unless a normally-
closed rain sensor is connected. Watering operation
will be suspended if this condition occurs.
5. Refer to the instructions provided with the rain sensor
for operating information.
Toro Wireless
Rain Sensor
13