Originally Posted by Wolfesmetalfab  will these resistors work for a 6.1amp motor setting on G203s? Might be a good source for others as well, as 5 pieces is just right, and they are cheap! The metal film is fine to use, right, i mean it doesn't matter what type of resistor does it? Also it has 1% instead of 5% tolorence, but thats fine, or even better, right?
280k for 6a motor
316k for 6.1a motor (318.5k is equation answer) |
1% is better, but not required. There are more 'standard value' choices available in 1% tolerance than in 5%. 316k should work fine. Note that 7amp shows OPEN (no resistor). Mariss has said in other threads that if the resistor value is too high you can have the G203V go into thermal shutdown from heat rise. If you never see that happen with a 316K resistor then you are operating at an acceptable resistance value. Extra heatsinking and a cooling fan on your G203s should help ensure no shutdowns occur.
Metal film resistors with leads may have too much inductance for high frequency circuits but should not be a problem for these drives. Depends on the circuit design's sensitivity to small inductance values.
An online parallel resistance calculator is at
http://www.1728.com/resistrs.htm and can calculate for up to 10 resistors in parallel. If you need something like 3500 ohms (3.5K) double that value (7100) to start with. Then pick the next higher and the next lower standard resistance values and see what that gives you. You can then raise the higher standard value to the next higher value again to raise the parallel resistance, or lower the smaller value resistor if you need to achieve a slightly lower parallel resistance.
CarveOne