What causes fault code ASRS-SHUTTLE1 (AS/RS Shuttle Vehicle — Battery / Charging Fault)?

Battery state of charge critically low — shuttle ran too many cycles without returning to charge position. Charging rail contacts dirty or corroded — shuttle not receiving charge current. Battery management system (BMS) fault — cell imbalance or temperature fault. Charger power supply failed — no charge current available at the charging rail. Battery end of life — lithium or lead-acid cells degraded below useful capacity

How do I fix fault code ASRS-SHUTTLE1?

Check shuttle battery voltage from the vehicle controller display — compare to minimum operating voltage. Navigate shuttle to a charging position — if it has enough charge to move. Clean charging contacts on the shuttle and on the rail — use fine sandpaper or contact cleaner. Measure charge voltage at the rail — verify charger is outputting correct voltage. Check BMS status — look for cell balance warnings or temperature flags. If battery will not accept charge, plan for battery replacement — match exact chemistry and capacity spec

AS/RS Shuttle Vehicle — Battery / Charging Fault

ASRS-SHUTTLE1

Shuttle vehicle in a shuttle-based AS/RS system reports a battery fault, low charge state, or charging contact failure. Shuttle cannot operate until power is restored.

high asrs

asrs shuttle battery charging bms lithium contacts

Probable Causes (ranked)

Battery state of charge critically low — shuttle ran too many cycles without returning to charge position
Charging rail contacts dirty or corroded — shuttle not receiving charge current
Battery management system (BMS) fault — cell imbalance or temperature fault
Charger power supply failed — no charge current available at the charging rail
Battery end of life — lithium or lead-acid cells degraded below useful capacity

Fix Steps

1 Check shuttle battery voltage from the vehicle controller display — compare to minimum operating voltage
2 Navigate shuttle to a charging position — if it has enough charge to move
3 Clean charging contacts on the shuttle and on the rail — use fine sandpaper or contact cleaner
4 Measure charge voltage at the rail — verify charger is outputting correct voltage
5 Check BMS status — look for cell balance warnings or temperature flags
6 If battery will not accept charge, plan for battery replacement — match exact chemistry and capacity spec

Field Trick

Shuttle battery charging contacts wear out faster than you'd expect because the shuttle vibrates when running. The contacts arc slightly on every micro-disconnect. Replace charging contacts proactively every 12 months and clean them every month. Corroded contacts cause incomplete charging, which shortens battery life.

Suggested Replacement Parts

Parts matched to fault category: Battery

Allen-Bradley 1756-BA2 PLC Battery P/N: 1756-BA2 ControlLogix battery module, 3V lithium, 2-year life

AutomationDirect $22.00 Amazon $18.00 Grainger $28.00

Mitsubishi Q6BAT PLC Battery P/N: Q6BAT MELSEC-Q series, 3.6V lithium, ER17330V

Amazon $12.00 Digikey $15.00 AutomationDirect $14.00

Siemens 6ES7971-0BA02 PLC Battery P/N: 6ES7971-0BA02 S7-300/400 backup battery, 3.6V lithium AA

Amazon $15.00 Mouser $18.00

Prices are estimates. Verify part numbers match your equipment before ordering.

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