Link4 iGrow 1800, Инструкция по установке и эксплуатации

Страница: 58 / 136

iGrow 1800 Installation Guide
Page54 Link4 (714) 524-0004
Latitude 34 N
Longitude 118 W
The iGrow 1800™ has an internal astronomical clock. By knowing the actual coordinates, sunrise and sunset
times can be precisely calculated. Go to www.heavens-above.com to find coordinates for your precise location.
If a
negative longitude is given you are west, and if a negative latitude is given you are south.
Outputs Control
Rain Hold Time: 01 m
Cmd Delay: 01 m 00 s
Irr Mode Concurrent
Irr Delay 00 m 05 s
Start Delay 01m 00s
Rain Hold Time
Rain Hold Time is a parameter that lets you choose how long you want the rain override condition to persist
after the rain status goes from Yes to No. This is to keep intermittent rain from causing the vents to keep
opening and closing.
Cmd Delay
Cmd Delay is the time between commands to change the equipments’ states. It is the shortest time permitted
for switching equipments. Typical update times are from 1 to 2 minutes. This parameter is used to minimize the
cycling of the equipment.
Irr Mode
Irr Mode is either Concurrent or Sequential. You can choose between the two options by pressing the + or -
key. These options apply if you program more than one irrigation valve to trigger based on accumulated light or
a dry contact switch closure, or if you select the cycling (misting) option. If you select Concurrent, then the
valves will turn on immediately when requested regardless of how many are already on. If you select
Sequential, then the first one will turn on but if other valves are to come on, they will wait in queue and each one
will come on in succession. (Also see Jumper section to make sure your settings are correct).
Irr Delay
Irr Delay forces a user definable delay between the valves. In other words, when the current On valve goes Off,
the next valve in the queue will wait the selected min and sec before it turns On.
Start Delay
This is the time duration upon a power startup before the first equipment can turn on. This is important when
you have multiple controllers in the event of a power outage. Each controller should be set with a different start
delay.