CDM1.4A
May 20, 2026

CDM1.4A

CDM1.4A (Bosch Rexroth Indramat) Model: CDM1.4A (also written as CDM1.4-A) Brand: Bosch Rexroth (formerly Indramat) Category: Multi-axis servo motion controller / Spindle drive unit (rack-mounted, upgraded version) Alternative names: Indramat CDM1.4-A motion controller, Rexroth CDM1.4A servo master control unit

Description

Model Code Interpretation

CDM: Controller-Drive-Motion (Control - Drive - Motion)

1: First generation of the hardware platform

4: Performance Level 4 (Higher than CDM1.3A, with stronger processing capability)

A: Firmware Version A (Standard motion control, supports combined control of spindle + servo axis) Basic Information

Structure: 4 slot racks (U1 to U4), U1 pre-installs the CDM1.4A main control CPU card, U2/U3/U4 can be inserted with spindle cards / communication cards / power supply cards

Dimensions (approx.): 390 × 105 × 325 mm (compatible with CDM1.3A rack)

Weight (approx.): 7.1 kg (including rack and main control card)

Power supply: DC24V ±10% (logic) + three-phase AC200~480V (drive power)

Heat dissipation: Fan forced cooling (improvement in heat dissipation efficiency compared to 1.3A)

Core functions and positioning

Positioning: High-performance multi-axis motion controller (spindle + servo integrated), for mid-to-high-end machine tools and automated production lines

Control capability: Standard 2 to 4-axis servo linkage, supports 1 spindle (analog/digital) + 3 servo axes combined control

Processor: Motorola 68020 (performance improved by approximately 40% compared to 1.3A's 68000)

Memory: 512KB RAM + 1MB EPROM (4 times that of 1.3A)

Control cycle: Current loop 62.5μs, speed loop 125μs, position loop 250μs (faster than 1.3A)

Programming: Built-in motion PLC, supports multi-task parallel (background PLC + 3 motion programs), compatible with Indramat MTC language

Communication and I/O

Bus: Standard SERCOS-II (high-speed real-time bus, rate 16Mbit/s), optional PROFIBUS-DP, DeviceNet

I/O: Standard 32 input / 24 output (50% expansion compared to 1.3A), supports high-speed triggering and synchronous output

Encoder: Supports TTL/1Vpp/Hiperface, each axis has an independent interface, spindle supports 16-bit absolute value encoder

Key differences from CDM1.3A

Performance: 1.4A processor stronger, memory larger, control cycle shorter

Control: 1.4A natively supports spindle + servo composite control, 1.3A mainly pure servo

I/O: 1.4A standard I/O points more, suitable for complex workstations

Heat dissipation: 1.4A forced air cooling, suitable for long-term high-load operation

Firmware: 1.4A supports advanced synchronization functions (electronic gears, cams, fly cuts)

Adapting accessories

Spindle cards: DEA24.1, DEA28.1M, DSC1.6 (compatible with 1.3A/1.4A)

Communication cards: SERCOS-II card, PROFIBUS-DP master card

Power module: TVM2.1-050, TVM3.1-100 (compatible with 1.4A rack)

Motors: IndraDyn S/M series (MSK, MHD, MKE) + spindle motor (such as MAD series)

Typical applications

High-end machine tools: machining centers, turning and milling combined, five-axis linkage equipment

Automation lines: electronic manufacturing, automotive assembly, photovoltaic equipment (multi-axis synchronization)

Special machinery: high-speed knitting machines,龙门 machining centers, tension control systems


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