Nidec Unidrive M400 General Purpose AC Drives Series

Optimised throughput, open automation systems and very easy to use

All-round member of the Unidrive M family

Unidrive M400 is exceptional at combining the ease of use of our general purpose range with the

capabilities of our high performance Unidrive M Series. The removable keypad with a real-text

display makes it ideal for users who require extra diagnostic help when setting up parameters.

Add in an impressive I/O count, dual Safe Torque Off (STO) and integrated PLC, all of which

contribute to making Unidrive M400 an extremely capable drive.

Unidrive M400

Fast set-up and diagnostics with plain text display, integrated PLC and safety inputs

Unidrive M400 minimises downtime with an intuitive LCD keypad offering a real-text, multi

language display for rapid set-up and clear diagnostic help. The integrated PLC can execute a

substantial range of sequencing and logic programs. Coupled with an impressive I/O count

complete with two STO inputs and an SI interface for a fieldbus option or extended I/O, this

feature set ensures Unidrive M400’s flexible integration with any system.

Minimise downtime and system set-up time with advanced keypad options

• Informative, multi-language, 3 line display aids set up and provides diagnostic information

• 4 navigation buttons facilitate intuitive navigation and programming

• Keypad options available: – CI-Keypad - drive mounted LCD keypad – Remote IP66 Keypad

– rapid panel mount (1 x 32mm Ø hole) - No keypad - programming and control can be

achieved via AI-485. CI-485 or fieldbuses such as SI-Profibus

Reduce system costs by directly integrating with applications

• Unidrive M400 incorporates an onboard PLC which can execute Machine Control Studio

(IEC61131-3) programs for logic and sequencing with real-time tasks - removing the need for

additional PLCs

• Fit an SI module to add fieldbus communications or additional I/O

Conform to safety standards, maximise uptime and reduce costs by integrating

directly with safety systems

• Unidrive M400 has integrated dual STO inputs for SIL3 / PLe conformity, eliminating the

need for external components

Energy saving

With energy costs a key factor in many industries, Unidrive M400 is packed with features to

enhance energy efficiency:

• Low power standby mode for applications where drives can sit idle for significant periods

• Automatic 3-speed cooling fan keeps energy usage and acoustic noise to a minimum by

intelligently responding to load and environmental conditions*

• Square law V/F mode is optimised for quadratic loads like pumps and fans to keep motor

losses to a minimum

• Dynamic V to F mode keeps energy usage and motor losses to a minimum in low load

conditions

• Unidrive M400 is highly efficient (above 98 %)

Unidrive M400’s onboard PLC is programmed using Machine Control Studio which provides a

flexible of programs, in line with latest PLC practices

IEC 61131-3 automation programming

The programming environment is fully IEC 61131-3 compliant and

therefore familiar, fast and easy to use for control engineers around

the world.

The following IEC 61131-3 programming languages are supported:

• Structured Text (ST)

• Function Block Diagram (FBD)

• Structured Function Chart (SFC)

• Ladder Diagram (LD)

• Instruction List (IL)

Also supported:

• Continuous Function Chart (CFC)

Intuitive IntelliSense functionality helps to write consistent and robust

programs, speeding up software development.

Programmers have access to a vibrant open-source community for

function blocks. Machine Control Studio also supports customers’ own

function block libraries, with on-line monitoring of program variables with

user defined watch windows and help for on-line change.