ABB PM857K01 AC 800M High Integrity Controller

ABB PM85701 AC 800M High Integrity Controller

The 3BSE088385R1 (PM85701) is an ABB AC 800M High Integrity process controller. It combines standard process control with safety functions up to SIL 3 when paired with an SM812 safety module. This unit is designed for critical applications requiring high availability and functional safety.

Core Technical Specifications

• Brand & Model: ABB PM85701 (Article: 3BSE088385R1)
• CPU: MPC866 @ 96 MHz, 32 MB RAM (22 MB for application)
• Safety Certification: Up to SIL 3 (IEC 61508) with SM812 module; TÜV certified.
• I/O Capacity: Max 128 signals total; supports S800 I/O High Integrity.
• Communication: 2x RJ45 Ethernet (Control Network), 2x RS-232C serial ports.
• Redundancy: Supports CPU redundancy for high availability (switchover <10 ms).
• Power Supply: 24 V DC (19.2-30V), typical 5.1 W dissipation.

Features, Safety & Certifications

• High Integrity Feature: Enabled by plug-in SM81x modules, allowing upgrade to SIL-certified schemes.
• Key Benefit: Combines safety and standard control in one controller without compromising integrity.
• Configuration: Programmed with ABB 800xA Control Builder.
• Certifications: CE, cULus (Class 1, Zone 2), ISA Secure, TÜV, RoHS, marine (ABS, BV, DNV-GL).
• Operating Temperature: +5°C to +55°C.
• Dimensions: 119 mm x 186 mm x 135 mm (W x H x D)
• Weight:1.2kg

Frequently Asked Questions

• Q: What makes this a "High Integrity" controller?
  A> Its architecture allows the addition of a certified safety module (SM812) to execute SIL 2/3 safety logic alongside standard control, all within the same hardware platform.
• Q: What is needed to achieve SIL 3 functionality?
  A> You must add the SM812 safety module and use the corresponding SIL-certified software package and configuration.
• Q: Can it be used in redundant configuration?
  A> Yes, two PM857 controllers can be configured for CPU redundancy to maximize system availability.