Product Description
ABB REM543CM216AAAA machine protection terminal, part of REM543 numerical relay family, manufactured in Finland. All‑in‑one protection, measurement and control unit for medium‑voltage asynchronous/synchronous motors and small‑medium generatorsABB Group。
Model code breakdown
‑ REM543: Rotating‑machine protection terminal series
‑ CM: Standard hardware with front‑panel LCD HMI
‑ 216: Full motor‑oriented firmware function package
‑ AAAA: Dual RS485‑SPA bus, I/O and auxiliary‑power configuration, panel‑mount variant.
Comprehensive motor protection: thermal overload, short‑circuit, earth‑fault, locked‑rotor, excessive start‑time, current unbalance, under‑load, over‑/under‑voltage, over‑/under‑frequency. Supports RTD temperature monitoring, user‑programmable logic, disturbance recorder and SOE event log. Dual RS‑485 SPA bus; IEC 61850 available via external SPA‑ZC400 adapter. Configured by CAP505 software. Marine‑approved for offshore installations. OEM phase‑out status; new‑surplus and fully‑tested refurbished units available.
Technical Specifications
| Item | Specification |
|---|---|
| Full Model | REM543CM216AAAA |
| Product Type | Motor & Generator Protection & Control Terminal |
| Series | REM543 Machine Terminal |
| Auxiliary Supply | 110‑240 VAC / 110‑220 VDC |
| Nominal Frequency | 50 / 60 Hz |
| CT Input | 1 A / 5 A; VT Input 100‑120 V |
| Binary Inputs DI | 15 channels |
| Relay Outputs DO | 12 relays including HSPO high‑speed trip contacts |
| RTD | Optional RTD temperature module support |
| Communication | Dual RS‑485 SPA bus; IEC 61850 via SPA‑ZC400; Modbus‑RTU |
| Protection Functions | 49 thermal overload, 50 short‑circuit, 51 over‑current, 50N/51N earth‑fault, stall, start supervision, 46 current unbalance, 37 under‑load, 27/59 over‑/under‑voltage, 81 over‑/under‑frequency; disturbance recording, SOE log, programmable logic |
| Configuration Tool | CAP505 software |
| Mounting | Panel flush‑mount for control cabinet |
| Operating Temperature | ‑25℃～+55℃ |
| Storage Temperature | ‑40℃～+85℃ |
| Certifications | CE, UL, marine approval |
| Country of Origin | Finland |
| Weight | Approx.0.75 kg |
Product Application
- Protection for critical medium‑voltage motors (pumps, fans, mills) in power, petrochemical & oil‑gas plants.
- Main protection for small‑medium hydro‑generator and diesel‑generator units.
- Rotating‑machine protection for offshore platforms and marine power stations.
- DCS / SCADA integration for remote monitoring and interlock tripping.
- Spare‑part replacement for legacy REM543 installations.
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