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Hi polaris12, Active energy readings available from on board watt meter (useful energy plus losses), losses as heat dissipation available using thermal dissipation model from manufacturer: heat loss in watts as function from ambient T, rpm . Thanks, Vladimir.

Hi, DL06 is a good small size PLC. Depending on your previos experience with other brands some attention should be paid to counters (only UP, BCD format preset) and instruction LD (octal format), also make shure in comparison instruction used same data format. I bilt small robot on this PLC and...

Hi, *Voltage increasing raises losses in core due to material histeresis. This part of losses is quite small and not dependable from motor load. *Voltage decreases puts down torque of asyncronous motor in power 2. *If load has M=const not function of speed (conveyor), then rotor slips and...

Hi, there should be formula from motor manufacturer that shows heat exhange dependance ( motor T, air flow speed, ambient Temp.). All effectiveness questions coming to ratio: what portion of cosumed active energy coming to heat. If you have active energy reading and calculated heat dissipation...

Hi, it looks like syncronous motor, So stator supplied with 3 phase AC voltage (hopefully symmetric - better to check). If vibration appears during load - reason in one coil pair on the stator provides different level of magnetic flux. Assuming coils itself are OK, I would check connection pole...

Hi, it looks like during transient voltage dip due to a fault elsewhere in the system moment from compressor remains the same, but angle between magnetic vectors of rotor and stator grows due to "M prop V power 2". The same time Stator current is propotional to the angle between...

Hi, if temperature sensor is OK and positioned properly, then may be useful to run this generator without load - magnetic flux is the same on / off load. If temperature goes up - then problem with insulation between stator plates or joint bolts installed without insulation tubes. If not - check...

Hi, I think bearings are gone, so rotor may go to resonans frequency and in certain moment hit stator. It may be in X or Y axes. Then you have "bang", instant decceleration and protection trip on all 3 phases. Thanks, Vladimir.

Hi, barcode reader reads valid barcode and sends ASCII string to configured communication channel of the PLC. In PLC program should be operations to read buffer and extract part of the string you need. Later you may compare string from barcode reader and file and have some actions. Thanks.

Hi, some Variable Speed Drives ( Siemens Micro- Midi-Master) have 4 types of control: 1. Analog configurable input (I,V)- then you need PLC with analog I/O, 2. Discrete Inputs , 3. Network Input, 4. Keypad control Thanks, Vladimir