Netafim NLC-100SH, Installation & Troubleshooting Manual

Page: 21 / 82

NLC ‐ 100SH Installation and troubleshooting
21
Connecting Sensors
The NLC takes input from different sensor types: ET devices, rain sensors,
flow sensors and regular auxiliary alarms. This sections shows you how to
connect these sensors to the controller.
Connecting an ET Device
The NLC supports ET in two ways:
1. "ET Enabled" mode in which the controller just lets an external device
tell it when to irrigate and when to stay passive. In this mode the controller
supports two ET devices: WR ‐ 7 and WR100i. To make the controller receive
instructions from an ET device, connect the "ET enable A" from the device
to the green terminals labeled "ET."
2. "ET Pulses" mode where you connect a weather station that
continuously tells the controller how much water is evaporating.
Combined with the input from a rain sensor the controller will then on its
own figure out how much to irrigate. Running in this mode you still just
connect the weather station to the ET terminals.
ET GND Rain GND Flo
w
GND V-
Au
x
GND
MV BO1 BO2 NOM
COM COM
- -
M204 M203 M202 M205