Class1 Intelli Tank 4 light driver module - Manual (Page 4)

Intelli-Tank Manual (106759) 12-15-03 – 4 – Class 1
The auto-fill function will energize the fill output when the tank level is at or below
¾ and de-energize when the Master display reads FULL. Auto-fill will also de-
energize the fill output and turn off the auto-fill status light if there is no data
being received on the data line from the Master display (serial error) or if a
transducer error high or low (range error) is encountered.
4 Outputs for the level lights
Four outputs are available to drive external lights to indicate tank level. These
are positive voltage outputs are capable of 7.5A each (Full light is output 4).
Alarm and alarm silence
The alarm output (pin 3) activates when the tank level falls to below ¼ tank or 10
seconds after a data line problem exists. The alarm output is a positive voltage
output capable of 250mA. The alarm silence input (pin 5) will turn the alarm off
during any alarm circumstance. The alarm silence activated by a momentary
ground input.
1-wire serial interface
The 1-wire serial interface is the link between the master tank level module and
any other remote modules. If the output driver module loses the serial link all
outputs will be deactivated and then the output lights will alternate flashing the
upper two lights and the lower two lights, and the auto-fill function will be
deactivated. After 10 seconds in this serial failure condition the alarm will sound
(it can be turned off with the alarm silence switch).
Dim level light outputs
The output lights are set to the dim condition (50% duty cycle) when a ground is
input on pin 6.
Module LED indicators
There are 3 LEDs on the front of the remote driver module. The RED LED
indicates that the circuit board has power. The YELLOW LED indicates the
power stud has power. The GREEN LED indicates the condition of auto-fill mode
and will react the same as the auto-fill status light output (pin 2).