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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9924TR датащи(PDF) 49 Page - STMicroelectronics |
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L9924TR датащи(HTML) 49 Page - STMicroelectronics |
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49 / 85 page  DocID029638 Rev 2 49/85 L9924 Warning, alarms and faults 84 6.2 Lamp The dashboard lamp (L or LHC) is used to notify faulty events to the driver. At start-up the lamp driver is, by default, switched on and must be switched off just after crank. The lamp must be activated if one or more the following conditions are present: Excitation overcurrent (signaled in register 0x12) Battery overvoltage (signaled in register 0x12) Discrepancy between the applied excitation and of the effective field excitation. A short to battery is not signaled by any flag of SPI registers but can be detected by comparing the two excitations [5.3.11] Phase error: persistent absence of phase signal [13.4.7] Phase regulation error: a persistent phase regulation request [13.4.7] Any of the above condition, before causing a lamp warning, must be confirmed for a lamp confirmation time (hundreds of milliseconds). When all above error conditions disappear, after a lamp-off confirmation time (hundreds of microseconds), the lamp is switched off. |
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