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J. Move the cursor to the field for the overtemperature shutdown setting. Press Up or Down to
set the desired temperature. The temperature that you set here will be that which, if sensed by
the probe, triggers automatic shutdown of all connected ballasts in Zone B in order to quickly
reduce the temperature of the grow environment and prevent crop damage. In this event, the
PX1 will not return power to the ballasts until the probe reports at least a 2-degree drop in room
temperature.
K. Move the cursor to the field for enabling hot start delay time. The time delay will only function if
the PX1 controller and ballasts lose power. This is the number of minutes the PX1 will delay the
return of power to the ballasts after a brief power interruption. This feature prevents a potentially
damaging “hot restrike,” which is the reignition of HID lamps while they are still hot from prior
operation. The settings available (in minutes) are 0, 5, 10, 15, 20, and 30 (0 = off). If power is
restored before the saved delay time has passed the PX1 will wait for the delay time to finish
counting down before returning power to the ballasts.
L. Press Enter to save all settings on this page. When saving settings on this page, a display reading
“Settings Saved” appears for 750 ms (three quarters of a second) announcing that the data has
been saved.
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INSTRUCTIONS
PHYSICAL INTERFACE (CONNECTIONS)
The bottom of the PX1 has eleven (11) connectors:
1. Power
2. Zone A Temperature
3. Zone A Ballast Control
4. Zone A Low-voltage external equipment trigger for Lights On (pair)
5. Zone A Low-voltage external equipment trigger for Lights Off (pair)
6. Zone A Low-voltage external equipment trigger for overtemperature (pair)
7. Zone B Temperature
8. Zone B Ballast Control
9. Zone B Low-voltage external equipment trigger for Lights On (pair)
10. Zone B Low-voltage external equipment trigger for Lights Off (pair)
11. Zone B Low-voltage external equipment trigger for overtemperature (pair)
Connector 1 accepts the power input jack from the AC adapter (6V DC).
Connectors 2 and 7 accept the plugs for the 19.5' temperature probes for Zones A and B.
Connectors 3 and 8 are the two main connectors for Zones A and B. They are for data transmission
and accept RJ12 plugs.
