CTI 2541 Redundant Processor Manager Module

2541 Redundant Processor Manager Module

The 2541 Redundant Processor Manager (RPM) provides an automatic backup solution for 2500 Series® PLCs.

If the active PLC fails, the RPM will automatically switch the remote I/O to the standby PLC.

Transfer to the standby PLC is bumpless. All remote I/O updates are mirrored to the standby PLC. In addition, up to 4096 words of user-defined critical data can be transferred from the active PLC to the standby PLC every scan.

Other non-critical data can be transferred over several scans.

The RPM can also switch up to two serially attached operator interface devices.

Features

2541

Automatically transfers control to standby PLC upon loss of I/O scan or “heartbeat” pulse from the active PLC

Switches both remote I/O and serially attached operator interface devices

Enables PLC logic to monitor status and control switchover, if desired.

Allows optional manual switchover capability

Uses high-reliability relays to directly connect the active PLC and remote I/O without intervening

electronics.

Defaults to a user-defined switched position on power loss or hardware failure

Provides LEDs to visually indicate status of control

Transfers up to 4096 words of critical data between active and standby PLCs every scan

2541 Redundant Processor Manager Module (MATURE)

Smart ModernizationTM

Whether you are an existing user of the 505 Series® or

looking for your next control system, CTI’s Smart

Modernization approach ensures the CTI control system you

are investing in will be around for many years to come.

Smart Modernization encapsulates our philosophical

approach to making control system advancements while

ensuring seamless transitions for our customers through the

continuous evolutionary improvement of our products.

With many 505 Series® products still in use today—some in

use for more than 30 years— the 2500 Series® allows these

customers to modernize existing controls without expensive

re-wiring, reprogramming, retraining, or product line

shutdowns.  Upgrading a control system with modern-day

replacements of old components and/or enhancing

performance with new advanced function modules — all of

which are backward compatible — mitigates risk during

migration and allows reuse of existing application programs

and hardware — reducing cost and downtime.  That’s what

we call Smart ModernizationTM.