SFU-ErrorFlags
7Pages

Classification of the Error-Bits in the Error Word at BMR SFU-Frequency Drives The following list shows possible Error‐States of the BMR SFU frequency converters and possible solutions. In case of doubts a change should be verified with the spindle manufacturer or BMR always. The Error‐States can be looked up with the Debug‐Tool of SFU‐Terminal software or can be read out with the command string 0x0C 0x5A 0x08. As answer the Error‐Word is sent in the format 0xCC‐ LowByte ‐ HiByte. Bit 0 Reason: - Error Overload (after delay time has expired) The spindle was operated too long within the permitted overload (Current Overload) range. The maximum peak current was exceeded (Switch Off Current). Rectification: - Check the set values for overload condition ask BMR or spindle supplier - Check the sharpness of the tool - Check the strategy for milling and tooling reducing the feeding speed - Check the power supply for the spindle: Is it sufficient in power and voltage and is it matching to the spindle? - Should the admissible delay time be extended? on own risk, only! In Menu SFU-Terminal > Delay Times change the value for Delay time overload Reason: The converter was operated too long beyond the permitted temperature. Rectification: - Check the ambient temperature (must not exceed +40°C) - Check if heatsink of the converter has enough venting air - Check, if the fan is spinning or if blocked or if the air inlet is blocked - Adjust the power requirements – reducing the output power - Should the admissible delay time be extended? on own risk, only! overtemperature converter

Classification of the Error-Bits in the Error Word at BMR SFU-Frequency Drives Reason: The supply voltage or the AC mains network voltage is too high. Rectification: - Check the mains network voltage - At open frame drives check the power supply and the supply voltage for the spindle Reason: The supply voltage or the AC mains network voltage is too low. Rectification: - Check the mains network voltage - At open frame drives check the power supply and the supply voltage for the spindle - Power OFF – Power ON Reason: The supply voltage or the AC mains network voltage is too low....

Classification of the Error-Bits in the Error Word at BMR SFU-Frequency Drives Bit 7 Reason: The converter has switched off due to a short circuit detection by hardware. Possibly this could be a Ground Shortage of one of the spindle lines Rectification: - Check the spindle cable: Disconnect spindle cable at converter and spindle: While measuring the resistance between the phases, there must not be any shortage In case the cable is fixed at the spindle the resistance should be low (some Ohms) but never zero. Move and bend the cable during both measurements. - Check the spindle: Disconnect...

Classification of the Error-Bits in the Error Word at BMR SFU-Frequency Drives Bit 10 Reason: Interruption of communication after starting with serial command. An operation with serial commands requires a periodical communication. After 4sec without communication the converter stops the spindle automatically, for safety reasons. Rectification: - Check interface cable - faster periodically request oft eh STATUS word, for triggering regularily Reason: It was selected an empty or invalid spindle characteristic Rectification: - Select or load the apropriate characteristic for this spindle In...

Classification of the Error-Bits in the Error Word at BMR SFU-Frequency Drives Bit 12 Reason at an AC-spindle: - The energy which was generated within the spindle during deceleration could not be dissipated sufficiently by the brake chopper. So the spindle voltage raised to too high values and converter was forced to switch off the power stage to protect itself. - The parameter setup in the spindle characteristic is not appropriate for the used tool, by this the inertia at deceleration is too high. - the spindle characteristic is wrong or wrongly setup. Rectification: - Check the proper...

Classification of the Error-Bits in the Error Word at BMR SFU-Frequency Drives Bit 13 Reason: It was detected an error at the internal EE2Prom memory of the converter Rectification: - not possible Contact BMR or the spindle supplier Reason: At operation with speed sensor it was detected at power on or after spindle Stop no standstill after a certain time possibly the spindle is driven by external force, e.g. strong coolant spray Rectification: - Deactivating or reducing coolant spray at standstill - Check speed sensor signal, if there are disturbances superimposed, which are interpreted...