EMC-XYYZB Performance Testing Motor - Series Bipolar
Processor & Clock Speed :Cyrix 6x86MX, 266 Mhz
Host Operating System :Windows 98
Power Supply Voltage :12 Volt DC, 12 Ampere
Motor Loading :Unload, free wheeling
Motor Part Number :P22NRXB-LDN-NS-00
Motor Winding Configuration :Series Bipolar
Linear Step Distance :0.0025 inch
Chop Clock At :42.3 Khz, 50.1% Duty Cycle
Start/Stop Step Count :400    One(1) full revolution
Ramp Rate :0.05 inch

Phase Current Setting :0.5 Amp    Test point reads 0.125V
Maximum Starting Steps/Second :800
Maximum Steps/Second :2200

Phase Current Setting :1.0 Amp    Test point reads 0.250V
Maximum Starting Steps/Second :1500
Maximum Steps/Second :2800
Heatsink Thermal Status :Testing with no fan the heatsink is at capacity
With a little forced air it runs cool.

Phase Current Setting :1.5 Amp    Test point reads 0.375V
Maximum Starting Steps/Second :1800
Maximum Steps/Second :2700
Heatsink Thermal Status :Testing with a little air circulation the heatsink got quite hot, putting fan output directly on heatsing worked well.

Phase Current Setting :2.0 Amp    Test point reads 0.500V
Maximum Starting Steps/Second :1800
Maximum Steps/Second :2700
Heatsink Thermal Status :Testing with a little air circulation the heatsink got quite hot, putting fan output directly on heatsink.
Heatsink gets hot but within component specifications.

Phase Current Setting :2.5 Amp    Test point reads 0.625V
Maximum Steps/Second :1800
Maximum Starting Steps/Second :2700
Heatsink Thermal Status :Requires putting fan output directly on heatsink.
Heatsink gets hot but within component specifications.
Potential hazard to misplaced hands.


Conclusion :Motors are not getting as hot as heatsink. The motor coil resistance is to small, if increased the motor would get hotter and absorb more engergy.
Boxes have two fans installed to provide adequate air circulation.
Motor specification in review.
EMC-XYYZB Performance Testing Motor - Parallel Bipolar
Processor & Clock Speed :Cyrix 6x86MX, 266 Mhz
Host Operating System :Windows 98
Power Supply Voltage :12 Volt DC, 12 Ampere
Motor Loading :Unload, free wheeling
Motor Part Number :P22NRXB-LDN-NS-00
Motor Winding Configuration :Parallel Bipolar
Linear Step Distance :0.0025 inch
Chop Clock At :42.3 Khz, 50.1% Duty Cycle
Start/Stop Step Count :400    One(1) full revolution
Ramp Rate :0.05 inch

Phase Current Setting :0.5 Amp    Test point reads 0.125V
Maximum Starting Steps/Second :500
Maximum Steps/Second :2200

Phase Current Setting :1.0 Amp    Test point reads 0.250V
Maximum Starting Steps/Second :1000
Maximum Steps/Second :4800
Heatsink Thermal Status :Requires Force Air cooling

Phase Current Setting :1.5 Amp    Test point reads 0.375V
Maximum Starting Steps/Second :1200
Maximum Steps/Second :5900
Heatsink Thermal Status :Requires Force Air cooling

Phase Current Setting :2.0 Amp    Test point reads 0.500V
Maximum Starting Steps/Second :1400
Maximum Steps/Second :5500
Heatsink Thermal Status :Heatsink Requires Fan Cooling.
Barely keeps the with heat dissipated. Fan has to be directed againsts heatsink.

Phase Current Setting :2.5 Amp    Test point reads 0.625V
Maximum Steps/Second :1600  4 Revolutions per Second
Maximum Starting Steps/Second :5400  13.5 Revolutions per Second
Heatsink Thermal Status :Gets Excessively Hot. There must be force air to cool the heatsink.


Conclusion :The Motors when used in parallel bipolar winding setup are twice as fast as in series bipolar.
The Motor specifications require review.
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Copyright 2016 Dennis Bohlke
Revised 03/12/16