The BPT had a special transformer for a 208 VAC machine. If you have a SMS card you will see current and voltage drop slowly. It was an added board to help prevent final drive transistor blowing.
The drive DC fuses (12, 13, 14) should have about 9 to 9.5 volts with the drives on and a static (motors not turning) current of 8.0 to 8.2 amps. When the motors are turning in rapid, the voltage will come up to about 58VDC and the current will drop to about 2 amps. As the motors age, this current will go up and the motor torque will diminish. The magnets are losing their force.
The CR1 relay does not sound like it is puling in. Is the emergency stop button mashed in? Is the machine in extreme limit state? If you mash the limit over ride does the light go out? Have you tried holding the limit over ride button in and jogging the axis? Is the 24 VDC power supply ok?
George W. |