MDD090C-N-030-N2L-130GL1

The MDD series brake is closed when unpowered and opens with 24 V DC; on DKS/MDD systems the drive provides 24 V and the manual shows +24 V to motor connector pin F and 0 V to pin G. This lets you safely free the axis for alignment without energizing the power stage.

Treat it as a holding/parking brake only—Bosch Rexroth guidance notes the blocking brake is not a personnel safety device; use external safety-rated brakes where required. Size the counterbalance and brake circuit for the worst-case static load and confirm 24 V DC actuation from the drive.

MDD series motors are commonly specified with IP65 sealed housings and shaft seals; this protects against dust ingress and low-pressure water jets, but still requires proper cable gland sealing. Check site conditions and add guards if exposed to aggressive cleaners.

Standard DSF requires homing after power loss, while DSF+multiturn provides absolute position retention—beneficial for CNC/printing lines that must recover quickly after e-stops. MDD090C part numbers with “N2M” denote the multiturn variant; “N2L” indicates standard DSF.

MDD motors are permanent-magnet, low-inertia designs; most air-cooled variants rely on chassis dissipation, while liquid-cooled versions are available for higher thermal density—choose based on duty cycle and ambient. Insulation class and allowable ambient (often ~0–45 °C for MDD models) guide continuous torque validation in enclosure.