Overview
Manuals
Drive Ratings
DC Braking
Cooling Setup
Features:
- Unidrive SPM modular inverter output stage for 380 to 480 VAC drive systems.
- Normal Duty: 350 A maximum, 200 kW at 400 V / 300 hp at 460 V maximum.
- Heavy Duty: 290 A, 160 kW at 400 V / 250 hp at 460 V; no dynamic brake control fitted.
SPMD1424 converts the compatible Unidrive SPM DC bus into controlled three-phase AC output for induction or servo-motor operation. In the documented active-input single-drive arrangement, two SPMD1424 modules use one SPMC1402 rectifier and active-input kit 400-4.
Before removal, save the complete drive parameters and record the module label, control and power connections, DC-bus arrangement, motor data, options, cooling path and braking execution. After installation, verify fans, DC-bus and drive diagnostics, motor direction, current feedback, speed or torque response, interlocks and the approved machine sequence.
The Emerson SPMD1424 Unidrive SPM Inverter Power Module is listed as Maintenance / Legacy Support. Current revision, availability and supplied scope are confirmed in the written quotation.
Emerson Control Techniques Unidrive SPM SPMD1424 Product Pages, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The published Normal Duty rating is 350 A maximum, with a typical motor output of 200 kW at 400 V / 300 hp at 460 V maximum. Normal Duty is intended for variable-torque and other applications where the motor rated current remains within the documented continuous-current limit.
The published Heavy Duty rating is 290 A, with a typical motor output of 160 kW at 400 V / 250 hp at 460 V. Heavy Duty is intended for demanding applications and higher short-term overload, subject to the complete Unidrive SPM installation and motor-current selection.
In the documented active-input single-drive arrangement, two SPMD1424 modules use one SPMC1402 rectifier and active-input kit 400-4. The complete DC-bus, rectifier, active-input kit, inductor and master/slave arrangement must follow the approved drive-system design.
The 2 configuration identifies an output module without dynamic brake control. The full Normal Duty rating is subject to the documented separate-airflow and ambient-temperature condition. Record DC-bus polarity, precharge or soft-start provisions, braking hardware and protective interlocks before removal.
All Unidrive SPM modules require an external 24 V DC supply for their cooling fans. This model's documented cooling requirement is: External 24 V DC cooling-fan supply required. Keep the approved airflow path clear and apply the stated ambient-temperature derating.
After installation, verify control power, fan operation, DC-bus stability, module diagnostics, motor phase sequence, current feedback, speed or torque control, braking or regeneration behavior where applicable, and every affected interlock under a controlled commissioning procedure.
