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Siemens MICROMASTER 440 Parameter Manual
Also see for MICROMASTER 440: Getting started guideOperating instructionsGetting started guideOperating instructionsOperating instructions
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Parameter Description Issue 01/06MICROMASTER 440 Parameter List142 6SE6400-5BB00-0BP0Caution:1. To activate the motor holding brake, in addition to parameter P1215 = 1, the status signal r0052 bit 12"motor holding brake active" must be output via a digital output. The user must also select the signal -e.g. in parameter P0731.2. If the motor holding brake is controlled by the drive inverter, then for potentially hazardous loads (e.g.suspended/hanging loads for crane applications) the drive inverter may not be conditioned unless theload has been secured. Before commissioning, potentially hazardous loads can be secured as follows:- lower the load to the floor, or- during commissioning or after replacing the drive inverter, prevent the drive inverter from controllingthe motor holding brake. Only then should STARTER be used to carry-out a quick commissioning ora parameter download, etc. The motor holding brake terminals can then be re-used (for the motorholding brake, in this case, it is not permissible to parameterize the system so that the digital outputP0748 is inverted).3. In order to hold the motor against the mechanical brake at a certain frequency, it is important that themin. frequency P1080 approximately corresponds to the slip frequency.- If the value is selected to be too high, then the current drawn can be too high so that the driveinverter trips (shuts down) due to an overcurrent condition.- For a low value, it is possible that the torque cannot be established to hold the load.4. It is not permissible to use the motor holding brake as operating brake as generally it is only designedand dimensioned for a limited number of emergency braking operations.Note:Parameter settings:- To open/close, a digital output controls the motor holding brake at point 1/2 (refer to the diagram). In thiscase, as prerequisite, the motor holding brake P1215 must be activated as well as the motor holdingbrake selected at the digital output.- Brake opening time P1216 greater than/equal to the time for the holding brake to open.- Brake delay time P1217 greater than/equal to the time to close the holding brake.- Select the minimum frequency P1080 so that it acts like weight equalization.- A typical value of the minimum frequency P1080 for the motor holding brake is the slip frequency of themotor r0330. The rated slip frequency can be calculated using the following formula:nnsynnsySlip fnnnP0310100r0330[Hz]f ⋅−=⋅=The following closed-loop control parameters should be observed in conjunction with the motor holdingbrake:- P1310, P1311, P1333, P1335 for U/f- P1610, P1611, P1750, P1755 for SLVCP1216 Holding brake release delay Min: 0.0CStat: T Datatype: Float Unit: s Def: 1.0P-Group: FUNC Active: first confirm QuickComm.: No Max: 20.0Defines the brake opening time of the motor holding brake (MHB).When the motor holding brake (P1215) is activated, then the setpoint enable is delayed by the selectedtime. The time that it takes to open the mechanical brake is subject to certain fluctuations. This is the reasonthat the drive inverter applies the min. frequency P1080 to the motor during this time. This means that thebrake can reliably open before the motor starts.Release time of the brake + relay opening time(s)P1216 ≥Details:See parameter P1215.P1217 Holding time after ramp down Min: 0.0CStat: T Datatype: Float Unit: s Def: 1.0P-Group: FUNC Active: first confirm QuickComm.: No Max: 20.0Defines the brake delay time of the motor holding brake (MHB).When the motor holding brake (P1215) is activated, after an off command, the pulse inhibit is delayed bythis selected time. The time that it takes to open the mechanical brake is subject to certain fluctuations. Thismeans that after braking to the min. frequency P1080, the motor is held at the minimum frequency for thistime. This means that the brake can reliably close before the motor is switched into a no-current condition.Application time of the brake + relay closing timeP1217 ≥Details:See parameter P1215.Level2Level2www . ElectricalPartManuals . com |
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