Classic Manual Rev L
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this PTC and disable the charging when it opens. When the fault is cleared the Classic will restore
charging. To disable the internal ground fault protection function, the jumper labeled GFP needs to
be removed and the GFP function needs to be disabled in the TWEAKS menu. See “Disabling GFP”
for instructions.
Disabling GFP
The GFP feature should only be disabled to operate the Classic in an ungrounded power system or in
systems where GFP is not required.
Depress MAIN MENU key.
Scroll to the right or left until TWEAKS is highlighted and depress ENTER.
In TWEAKS, depress the RIGHT SOFT key to get to the MORE menu.
In MORE, scroll until GFP is highlighted.
Use the UP and DOWN ARROW keys to toggle between on and off.
Depress ENTER to save.
To reset the internal GFP function after detection has occurred: fix the actual ground fault, then turn
off the Classic and turn it back on (via circuit breaker between Classic and battery bank).
Positive Ground Systems
When installing the Classic in a positive ground system there are a few extra steps that need to be
taken. The ground fault jumper needs to be removed, and ground fault needs to be disabled in the
TWEAKS menu.
The overcurrent protection needs to be done a little differently as well. The input and output
breakers need to be double pole breakers. Battery negative and positive conductor both need to be
protected. Refer to Classic Breaker Sizing on Page 67.
CAUTION: Do not connect both positive battery and positive PV input to ground. One or the other
positive (normally battery +) but not both, otherwise, the Classic input and output will be
shorted.
Networking
Follow-Me Charge Coordination
Follow-Me allows Classics to share charge stages, battery temperature info, and ground fault
coordination. Follow-Me also allows you to program a single Classic for Equalize charging and it
will instruct all the others to Equalize as well. You do need to set the Equalize parameters in each
Classic. You will only need one BTS and it can be on any of the Classics.
WARNING: MidNite HIGHLY recommends using Follow-Me with two or more Classics. Best for
battery bank health. All firmware should match across all Classics.
WARNING: Reversed Follow-Me cables can damage the Classic if left in place for extended periods
of time and will not be considered under warranty. Please verify the proper operation
of Follow-Me during the initial set-up.
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