Classic Manual Rev L
39 | P a g e 1 0 - 0 0 1 - 1 R E V L
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Auxiliary Ports
The Classic includes two auxiliary ports which can be configured to become inputs or outputs.
These AUX ports can be used as a secondary power supply to be used for accessories such as vent-
fan, diversion loads, logic inputs, WBJr, or the Clipper. The AUX output is limited to 200mA or less
per channel.
An internal, re-settable positive temperature co-efficient (PTC) fuse protects the AUX
internal components from over-current or a short circuit.
AUX 1 consists of either RELAY or LOGIC operation, depending on user selection. AUX 1 can
output either nominal +12V (12-14.5V), 0V, or continuity as a dry contact.
NOTE: When using AUX 1 it is recommended that you have a relay in line to protect
the Classic. AUX 1 is only rated for 12V/200mA; if you use a device that will pull more
current, doing so can harm the Classic. Using a relay is also good for isolating the Classic
from possible stray voltage sources.
AUX 2 can be set as an input or output. One at a time this port can read the state of a device
connected and takes an action from there. AUX 2 can output nominal +12V, 0V, or a 500Hz
PWM +12V signal. The input to AUX 2 can be either a <2VDC signal or a >6VDC signal, to turn
on or off the Classic, based on the AUX2 option selected.
NOTE: When the Classic sends out a PWM signal on AUX 2, it is always +12 to 14.5V,
regardless of battery voltage.
Configuring the Classic's AUX ports:
Depress the MAIN MENU key.
Scroll left or right to highlight AUX and depress ENTER.
Scroll left or right to highlight either AUX 1 or AUX 2.
Depress the RIGHT SOFT key labeled SETUP.
Scroll up or down to change the mode of the AUX terminal.
Depress the RIGHT SOFT key to set the parameters of the function.
When finished, depress ENTER to save the changes.
Depress MAIN MENU key, return to AUX 1 / AUX 2 page
Use LEFT/RIGHT ARROW keys to highlight AUX 1 or AUX 2
Use UP/DOWN ARROW keys to turn AUX to OFF, AUTO, or ON.
Places output to Low state (0V)
Selects the assigned function to the AUX output or input
Sets output to High state (12V or Relay Closed)
Table 5
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