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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9924L датащи(PDF) 48 Page - STMicroelectronics |
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L9924L датащи(HTML) 48 Page - STMicroelectronics |
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48 / 84 page  Warning, alarms and faults L9924L 48/84 DocID028840 Rev 3 5.2 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 of the following conditions are present: Excitation overcurrent (signaled in register 0x12) Battery overvoltage (signaled in register 0x12) Discrepancy between the applied excitation and 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 [4.3.11] Phase error: persistent absence of phase signal [12.4.7] Phase regulation error: a persistent phase regulation request [12.4.7] 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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