ABB PM876
ABB PM876 - Image 2

ABB PM876

Product Brief:​ The PM876 (part of the PM870 family — 876 = 1 GB RAM version) is ABB’s third-generation AC 800M controller, introduced with System 800xA 6.x / Freelance 2016+. It retains full backward compatibility with PM865/PM866 application code (subject to Control Builder M version) but adds:

  • 1 GB application RAM / 2 GB Flash
  • Dual Gigabit Ethernet ports (10/100/1000BaseT)
  • Hardware-based secure boot, TPM (Trusted Platform Module) option, enhanced user/auth management​ aligning with IEC 62443-3-3 SL2/SL3
  • Faster scan for large applications; improved OPC UA / IEC 61850 performance

    It mounts on BC810/BC820 baseplates and is redundancy-ready (1:1 hot-standby with PM876 pair).

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Category: SKU: ABB PM876

Description

ABB PM876

  • Technical Specifications:
    • CPU: Multi-core RISC with crypto-accelerator
    • Application Memory: 1 GB DRAM (retentive bat-backed)
    • Flash: 2 GB (OS + project + audit trail)
    • Ethernet: 2 × 10/100/1000 Mbps RJ45 (Gigabit) — plant network / engineering / OPC UA / IEC 61850 GOOSE/MMS
    • Other Interfaces: RS-232/485, CEX-Bus, ModuleBus — same physical as PM865/866
    • Redundancy: 1:1 hot-standby (PM876 + PM876 only — no mix with PM865/866)
    • Power: 24 V DC from baseplate; typ. 20 W max
    • Operating Temp.: 0 °C to +60 °C
    • Certifications: CE, UL, cULus, ATEX Zone 2, IEC 62443-4-2 SL2 (with proper system config), SIL2 capable
    • Firmware: Requires Control Builder M 6.x (or later) — PM876 NOT supported on older CB M 5.x
  • Functional Features / Application / Material / Structure / Working Principle / Installation / Precautions:
    • Same IEC 61131-3, 800xA Batch, PMC libraries as PM865/866 — projects convert upward (PM865→PM876) with recompile; downward conversion NOT supported
    • Dual GigE allows segregation of plant network & engineering/diag network on separate ports or VLAN-tagged single NIC (if switch supports)
    • Enhanced audit trail — tracks who changed what in controller config (with 800xA user auth)
    • Precaution:​ Cannot mix PM876 with PM865/PM866 in redundant pair — must be identical. Firmware/Control Builder M version must be 6.x+ — check project & server compatibility before migrating.
    • For legacy project migration: open PM865 project in CB M 6.x → change CPU type to → recompile → download to — review warnings.

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