ABB MNS iS Motor Control Center MNS iS Interface Manual MLink

Introduction
The system interface MLink is an industrial PC equipped with interface cards and ports required
for communication internally to MControl and externally to process control systems.

One MLink can communicate internally with up to 60 MControl. If more than 60 MControl are
required, then additional MLinks have to be used.

The configuration of MLink depends on the selected communication protocol to the DCS.
Following communication interface protocols are available:
· PROFIBUS DP (-V0) and PROFIBUS DP-V1
· MODBUS RTU / TCP
· PROFINET IO

System functions such as MLink web interface (MView), OPC connectivity and time stamp are
possible with all MLink types.
For communication to MControl a dedicated interface plug (switchgear bus connector) has to be
used dependent on system configuration (redundant, non redundant system).

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Access to integrated components such as electronic protection relays on standard switchgear is usually not possible if the module is energized.
As an outstanding attribute MNS iS switchgear provides separate compartments, one for power cables on the right hand and another for control cables on the left hand. The two cable compart-ments can be provided with different key locks in order to assure specific access rights.
MNS iS motor/feeder cables are housed in their own power cable compartment completely isol-ated from any control equipment or wiring. The cubicle arrangements are configured suitable for front cable access.
The power cable compartment can be provided with cable entry from the top or bottom of the cubicle.
The control cables have their own control cable compartment completely segregated from the power compartments.
This control compartment also houses the integrated motor control units MControl and other associated control equipment.
The control wiring can enter from the top or bottom as required for the project. External signals (such as pushbuttons, indicators etc.) connect directly to the MControl main board.

Fixed Module Design

For specific applications MStart is offered in fixed design. The module size is 85E (full height of the switchboard).