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Archive for December, 2014

Servo motor allows the shaft end of load

December 4th, 2014 at 03:41 am

CCC CE ROHS UL VDE Certification and 115/120 V AC Voltage 220V&120V induction motor
Specifications
1. Specifications1.3-phase asynchronous motors
2. IEC standard
3. OEM
4. Voltage:50HZ &60HZ;380V&415V
5.Protection class: IP54

three phase induction motor A: make sure that generator during installation and operation to the radial and axial ac motor load on the shaft servo motor control in each model within the www.facebook.com/guohong.trading specified value. B: take special care when installing a rigid coupling, especially the excessive bending load may cause the damage of the shaft end and bearing three phase induction motor wear or C: had better use of diesel generator set flexible coupling, single phase induction motor so that the radial load is lower than the allowable values, it is specially designed for servo motor with high mechanical strength. D: squirrel cage induction motor to allow the axle load, please alternator generator refer to the "allow the axial load of table" (operation instruction).

Servo motor allows the shaft end of load

December 4th, 2014 at 03:41 am

CCC CE ROHS UL VDE Certification and 115/120 V AC Voltage 220V&120V induction motor
Specifications
1. Specifications1.3-phase asynchronous motors
2. IEC standard
3. OEM
4. Voltage:50HZ &60HZ;380V&415V
5.Protection class: IP54

three phase induction motor A: make sure that generator during installation and operation to the radial and axial ac motor load on the shaft servo motor control in each model within the www.facebook.com/guohong.trading specified value. B: take special care when installing a rigid coupling, especially the excessive bending load may cause the damage of the shaft end and bearing three phase induction motor wear or C: had better use of diesel generator set flexible coupling, single phase induction motor so that the radial load is lower than the allowable values, it is specially designed for servo motor with high mechanical strength. D: squirrel cage induction motor to allow the axle load, please alternator generator refer to the "allow the axial load of table" (operation instruction).

PLC control two pump start-up failure solutions to problems

December 4th, 2014 at 03:29 am



Situation:in the double liang steam double-effect lithium bromide absorption air-conditioning unit,the use of omron PLC (PA204S C200HE-CPU42,power supply) to control the start of two pumps. When,in turn,start the two pumps,often led to the suspension of the power of the PLC,thus stop running program.Second,the detection of 1,use the meter to measure the voltage electric motor 12v 500w waveform of two pump ordinal startup PLC power PA204S ac voltage of the power supply change found:when did not start the electrical motor 12v 1000w pump,the voltage of the power supply is normal,when start the two pumps,instantaneous fell to the power supply voltage of 184 v,184 v and the duration of the above 25 ms,PLC to stop working,and to determine the effect of pump power of PLC.2,in order to solve this problem,respectively for the following tests: A) driving the pump first,delay around 10 s to start small pump,power supply voltage drop to about 190 v,the instructions first,pump makes instantaneous voltage drops,later start small pump,affect smaller,but it need to modify the PLC program.B) because the pump power supply is turned by high tension line through a transformer,transformer capacity,can be considered a large capacity of transformer,may make the pump will be smaller influence on the PLC power supply voltage.C) in the PLC power supply termination a large capacitance,but the effect is not obvious.D) finally in one power supply transformer converted by a 220 v power supply to PLC,found that even in the start two pumps at the same time,PLC power supply voltage drop is only about 204 v,204 v,the can.Conclusion:as a result acmotortrading.blogspot.com of the PLC power supply is supplied with water pump in the same way,and the plant's transformer capacity is small,so in the start two pumps,caused the PLC power supply voltage drops below 85% of rated voltage,and duration of more than 10 ms,resulting in PLC detected power interruption,stop working. So the advice from the transformer converted one by one in the 220 v power to separate for PLC,which can solve the problem.