Product Overview

The ABB 1TNE968900R1210​ is the PM564-R A0, the relay-output CPU variant within ABB’s AC500 ECO compact PLC family — ABB’s cost-optimized, DIN-mount programmable logic controller aimed at small-machine builders, packaged-skid OEMs, pump/compressor houses, and building HVAC panels where a full-size AC500 (PM590/PM595) would be overspecified and a smart-relay would be underspecified. The “ECO” branding signals the positioning: the PM564-R A0​ keeps the AC500 instruction set, the Control Builder PS​ engineering suite, and the Ethernet + Modbus RTU communication backbone, but strips cost by integrating the I/O onto the CPU body instead of forcing a separate I/O rack — 8 digital inputs, 6 relay outputs, 2 analog inputs, 2 analog outputs, all in one 105×100×75 mm DIN block at ~0.4 kg.The “-R” suffix is the defining trait: relay outputs rated 24–250 V AC / up to 2 A per point, which means the ABB 1TNE968900R1210​ can directly switch contractor coils (ABF, AF, AX series), solenoid valves (24 V DC / 120 V / 230 V AC), alarm horns, and beacon lamps without an interposing relay — a material BOM and panel-space saver for machine builders. The trade-off (worth stating up front) is relay mechanical life (~100k–300k ops depending on load) vs. the millions of a transistor output; for high-cycle PWM or servo-enable signals the PM564-R A0​ is the wrong choice, and the “-T” (transistor) sibling exists for that. The “A0” suffix is the hardware revision — ABB has iterated the PM564 family through A0/A1/B0-type steps, mostly silkscreen and component-tolerance tweaks, so A0 is the specific build this order code locks to.In the automation hierarchy, the ABB 1TNE968900R1210​ sits at the machine-controller tier — below a DCS (Symphony Plus P4LR) or a protection relay (REF615), above the contactors and sensors. It executes ladder/FBD/ST code in Control Builder PS, scans the integrated I/O, talks Ethernet to an HMI or upstream SCADA, and drops Modbus RTU out to a VFD or a remote I/O block (like the 500CU-BIO01​ covered earlier) on the same skid. For MRO teams on packaged-equipment lines — water-treatment skids, compressor packages, conveyor zones, small press/fabrication cells — the PM564-R A0​ is the “machine CPU” spare: when the OEM’s panel goes dark and the label reads ABB AC500 ECO, this is the drop-in. ABB still actively sells the PM564 ECO line (it hasn’t been pushed to “spare-only” the way P4LR’s predecessor was), so lead times are generally healthier than the 1MRK/1KHL protection codes, but A0-rev specific allocations can still firm up regionally.

Technical Specifications