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Curtis 1212S Manual, R ev. B
4, 1 Current Sense 1. Short in motor or in motor wiring. Opens bridge and main relay Correct fault;
Fault 2. Controller failure. and drops brake if current cycle KSI.
sense >high threshold or
<low threshold.
4, 2 Hardware Failsafe 1. Motor voltage does not correspond Opens motor and main relay Correct fault;
to throttle request. and drops brake. cycle KSI.
2. Short in motor or in motor wiring.
3. Controller failure.
4, 3 EE Checksum 1. EEPROM failure or fault. Bridge is shorted and throttle Must use programmer
Fault set to zero. to clear, as follows:
select Program menu,
alter data value of any
parameter, cycle KSI.
4, 5 Battery Disconnect 1. Battery not connected. Will short the bridge and Correct fault;
Fault 2. Poor connection to battery terminals. disable the EM brake driver. cycle KSI.
5, 1 Low BDI 1. The battery discharge falls below Vehicle speed is limited to a Correct fault.
the programmed threshold. programmed value after BDI
2. The lift lockout input signal falls below the programmed
(pin J1-9) is active. threshold.
Table 2 TROUBLESHOOTING CHART, cont’d
CODE FAULT POSSIBLE CAUSES EFFECT OF FAULT RECOVERY
7 — DIAGNOSTICS & TROUBLESHOOTING
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