Emerson DeltaV™ Redundant Controller

Uninterrupted control operation

Online upgradeable

Automatic commissioning

Bumperless transition

Introduction

Now you don't have to worry about controller hardware failures interrupting your process and causing costly downtime.

With redundant controllers, your processes are automatically protected in the event of a hardware failure.

If the active controller fails, the backup controller automatically takes over, providing uninterrupted control operation without initialization or user intervention.

Switchover does not cause any interference with the ffeld output signals, so your process can continue to run uninterrupted.

Adding redundancy requires no special wiring or configuration; simply add a controller to your existing hardware.

Redundant controllers also support online upgrades of controller software and hardware. So you can upgrade MD Plus to MQ or MX online, or SD Plus to SQ online.

or SD Plus to an SQ or SX controller online without changing the configuration.

Benefits

Uninterrupted control operation. By installing redundant M-Series, S-Series, and PK controllers, you create a "safety net" that

protects your process from unexpected controller failures.

In the event of a hardware failure, a backup controller is always available to keep your control and process up and running.

Online upgrades. Installing a redundant DeltaV controller allows you to upgrade your DeltaV system online.

New software can be installed into the backup controller online without disrupting operations.

Once the upgrade is complete, the backup controller is automatically configured and available, allowing you to switch to the new ffrmware without interrupting your process.

Once the switchover is complete, the original active controller can be upgraded. In addition, MQ controllers can be upgraded online to MX controllers.

SQ controllers can be upgraded online to SX controllers. This ensures that your system is always ready to expand as your control strategy evolves.

Automatic commissioning. The system automatically detects, commissions, and downloads spare controllers so you can safely replace equipment.

Add redundancy online by simply installing a new 2-wide backplane with system power and MQ, MX, SQ or SX controllers.

The SZ Controller Carrier or Dual Universal Safety Carrier provides 2 slots for SZ controllers, so there is no need to add anything other than additional SZ controllers.

PK controller carriers also provide 2 slots, so simply add a PK controller to an existing carrier.

The engineering database is automatically updated and the spare controller can be activated

by simply assigning and downloading a controller redundancy license, all without interrupting the process.

There are no dip switches, jumpers or addresses to assign.

The backup controller automatically assigns the proper backup address and starts working, protecting your process.

Bufferless Transitions The DeltaV controller is designed for bufferless control transitions from the active controller to the standby controller.

During this time, the output channels maintain their output state until the switchover is complete and the control module begins execution.

The control module uses signal status to ensure that all I/O channels are normal before taking control action on them.

All output signals are synchronized via the I/O readback function to ensure that control calculations are made based on the current output state.

When using CHARM or DeltaV Classic I/O cards with or without Foundation™ ffeldbus devices.

This ensures an uninterrupted transfer of control during switchover.