For weight-loaded axes without mechanical or hydraulic weight counterbalance, the vertical axis drops when the brake is released and the servo enable is switched on. This lowering dZ of the Z axis can be compensated by activating an electronic weight counterbalance.
After releasing the brake, the constant weight counterbalance torque now maintains the position of the vertical axis.
Sequence:
1. Brake holds Z axis
2. Brake is released; controller enable on; pulse enable on
3. Z axis does not drop, but holds its position
Benefits
Prevents lowering of weighted axes without mechanical or hydraulic counterbalance. After releasing the brake, the constant weight counterbalance torque now maintains the position of the vertical axis.
