5-Stage Charge - Cub Cadet RZT-S Zero Shop Manual

RZT-S Zero

5-STAGE CHARGE

NOTE: The 5-state charge and the charger trouble codes sections were extracted from charger's instruction
manual, form number MNL058en Rev. 6.
• 3 seconds after connection to AC Power, (and assuming the use of the 120Vac 60Hz model part number
1-48C017xxx-xxxx, set to MODE-2, all 5 charger L.E.D.s will flash on and off, twice, and then the Power
L.E.D. and Detection L.E.D. will illuminate. The Detection L.E.D. will turn off when the charger's output DC
Cable connects to a battery pack (means that the charger has detected the battery pack).
• The Mode Select is annunciated by the number of times you see all five L.E.D.s flash on and off, at the
beginning of power-up. If you count "3" flashes, this indicates Mode-3 operation.
NOTE: The charge has four modes. The modes refer to the jumper setting on the charger's control panel. The
different modes only affect the initial (stage 1) output voltage of the charger. All four modes work with
the battery pack on the RZT-S Zero.
1. STAGE ONE - PRE-QUALIFICATION TEST
• Yellow, Light Emitting Diode (L.E.D.), flashes on and off SLOWLY at a rate of once every 2 seconds
during this stage. This stage applies tests to the battery pack. Further charging is prohibited if the charger
discovers a fault such as connection to a 72V battery pack or reversed battery connections.
• The duration of this stage is dependent on the condition of your battery - approximately 45 seconds under
average circumstances, but if your 48V battery pack was allowed to severely discharge to less than 42v
(10.5v for every 12v battery), then this stage can last as long as 5hrs.
2. STAGE TWO - CONSTANT CURRENT CHARGE (Bulk Charge)
• Yellow L.E.D. illuminates continuously indicating that the charger is charging the battery at the full rated
output.
3. STAGE THREE - CONSTANT VOLTAGE CHARGE (Absorption Charge)
• Yellow L.E.D. remains illuminated continuously, but the charger now regulates voltage and not current.
While the charger maintains a constant voltage, the charge current gradually decreases.
• When the charger has determined the battery pack has reached 80-90% capacity, the Yellow and Green
L.E.D.s both illuminate.
• This stage ends when the charge is replenished to 100% capacity.
4. STAGE FOUR - CHARGE COMPLETE (Standby)
• Green L.E.D. only, illuminates continuously. The charger will also disconnect itself from AC power, thereby
saving energy and cost. While connected to the battery, the microprocessor remains active to monitor bat-
tery voltage and to keep a record of elapsed time. The charger's DC cord set can now be disconnected
from the charging receptacle by grasping the plug body or handle and pulling the plug straight out of the
receptacle.
5. RECYCLE CHARGE STAGE FIVE
• Only after the completion of Stage 4, and after 28 days of time has elapsed, the charger will reset itself;
thereby automatically initiating a new charge cycle routine and restoring battery to full capacity.
• If the charger is left connected to AC Power, and then the DC cord set plug is re-connected to another bat-
tery pack, the charger will restart a new charge cycle from the beginning (Stage 1).
• If, while charging, the charger finds an abnormal charge condition, it will attempt to shutdown and indicate
the "Condition" by flashing one or all of its red l.e.d.s. refer to the charger trouble codes section for a
description of the charge error condition, if you encounter a flashing red L.E.D.
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