Product Description:

The MIP22 D11 servo inverter is manufactured by Okuma within the MIV Servo Drives series. Designed for machine-tool automation, it drives a dedicated axis by switching the DC bus supplied by the common power unit into a controlled three-phase output and coordinating torque and speed commands issued by the CNC controller. In this role, the module links position feedback, current regulation, and protective functions to maintain stable motion on lathes, milling centers, and multitasking equipment.

On the power channel labeled “L,” the inverter delivers 30 hp continuously, equal to 22 kW at the shaft when paired with the specified motor. Control logic is executed on the ICB1 board, and the overall topology follows an inverter and DC supply architecture that shares energy with neighboring axes. Speed feedback presented at the diagnostic plug follows a ratio of 6250 min⁻¹/V, while phase current is scaled at 131.1 A/V so external monitors can convert raw voltage into physical units. The analog monitor window spans ±3 V, permitting full-range observation by standard ±10 V acquisition cards. Local status is reported by two seven-segment displays with an accompanying charge LED. The standard configuration combines one control board with one inverter to simplify spare parts management.

Position sensing relies on a resolver that supplies the drive with a 6.0 Vpp carrier at 7.81 kHz; these values support a stable signal and accurate digital angle measurement. When the monitor port is switched to torque mode, the full-scale reference is 3 V, and loop precision is further tightened by a voltage error factor of 1/42 between commanded and measured values. After shutdown, a power-down wait time of two minutes allows internal capacitors to discharge below touch-safe levels. Index verification uses separate comparators that accept at least 1.4 V on the Vz1 path and 0.5 V on the Vz2 path. These comparator thresholds maintain Z-pulse integrity for spindle orientation during jog, dwell, or threading cycles.