Product Core Brief
- Model: REM610C55HCNN02 (Complete withdrawable assembly including matched factory draw-out baseplate)
- Brand: ABB
- Series: Relion® 610 Series REM610 Dedicated Motor Protection & Control IED
- Core Function: Full-featured plug-in intelligent motor protection relay for LV large asynchronous motors & small/medium MV motors (500kW~2MW), covering startup stall, thermal overload, phase unbalance, earth fault, loss of load, breaker failure, temperature monitoring and local bay control; widely used in pumps, fans, crushers, mills and process industry motor drive bays.
- Product Type: Draw-out Motor Protection IED Full Assembly (Plug-in Main Unit + Hardwired Draw-out Baseplate)
- Key Specs: C55 = 5A CT secondary input hardware; H = 100–240V AC/DC universal wide-range auxiliary supply; CNN02 = Standard I/O without RTD expansion module; built-in CT shorting links on baseplate
- Note: OEM active production; factory sealed new full kits and fully bench load-tested surplus available for industrial MCC & medium voltage switchgear retrofit and emergency maintenance.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Full Order Code | |
| CT Input Hardware (C55 suffix) | Fixed 5A secondary phase & residual CT input (no 1A switchable) |
| Auxiliary Power Variant (H) | 100–240 VAC / 48–250 VDC universal supply; peak 18W power draw |
| Analog Measurement Channels | 4 galvanically isolated CT current inputs (3 phase + residual earth fault) |
| Standard Built-in I/O Layout (CNN02 No RTD module) | 2 galvanic digital inputs; 3 power trip NO outputs; 2 Form-C signal changeover contacts |
| Core ANSI Motor Protection Function Suite | 49 thermal overload dynamic thermal model, 50/51 phase overcurrent, 50 short-circuit instantaneous trip, 46 phase unbalance/phase reversal, 37 undercurrent loss of load, 51N non-directional earth fault, 62BF breaker failure, cumulative start counter + restart inhibit, stall supervision, trip circuit supervision |
| Onboard Communication Interfaces | Front optical SPA service port; rear RS485 Modbus RTU/DNP3.0; IEC 60870-5-103 via media adapter; no native Ethernet on base CNN configuration |
| Data Recording Capacity | 100 timestamped SOE event logs; 5 COMTRADE fault disturbance waveform records for motor startup & running faults |
| Draw-out Mechanical Design | Hot-pluggable plug-in unit; baseplate integrated mechanical CT shorting links to eliminate lethal CT open-circuit hazards during unit swap |
| HMI Interface | Multi-language graphical LCD, local motor Start/Stop pushbuttons, dedicated fault status LED indicators |
| Front Panel Enclosure Rating | IP54 flush cabinet mount; rear baseplate terminal compartment IP20 |
| Operating Ambient Temp | -10 °C to +55 °C continuous rack operation; storage -40 °C ~ +70 °C |
| Humidity Resistance | <95% RH non-condensing, conformal coated PCB for industrial corrosive environments |
| Mechanical Form Factor | 4U half-width 19-inch draw-out assembly |
| Full Assembly Dimensions | 177 mm W × 177 mm H × 149.3 mm D |
| Net Assembly Weight (IED + Baseplate) | ~3.5 kg |
| Compliance Standards | IEC 60255, UL508, KEMA type-tested, DNV marine/offshore certified, RoHS |
Product Introduction
This is the standard 5A CT universal power motor protection full kit without optional RTD temperature expansion card, designed for standard motor bays without winding/bearing temperature measurement requirementseero.The withdrawable baseplate retains all CT/VT and control wiring fixed in cabinet, with built-in CT shorting links to safely extract the plug-in IED without dangerous open-circuit CT voltages during maintenance. Its proprietary dynamic thermal model accurately simulates motor heating curves during long startup, repeated jogging and continuous running, greatly reducing false overload trips compared to traditional thermal relaysRS Modules.
Embedded start supervision logic limits cumulative motor startup times to prevent rotor bar damage, while loss-of-load (undercurrent) protection detects broken belts, coupling failures and pump dry-run conditions. All fault records, motor running hours and startup counters are stored in non-volatile flash and retained through full auxiliary power outages. The front SPA optical port enables offline parameterization without opening live low-voltage cabinet terminals.
QA & Testing SOP (Transparency Building)
- Incoming Inspection: Cross-reference full order suffix and matched IED/baseplate serial numbers against OEM spare registry to reject mismatched assemblies; inspect LCD screen, rear RS485 terminals, baseplate CT shorting links and PCB conformal coating for scratches, corrosion or moisture marks; log serial batches for full traceability.
- Live Full Assembly Testing: Mount IED + baseplate to standard 4U test rack, supply stabilized 220V AC/DC auxiliary power, inject 5A CT simulated motor startup/stall/earth fault signals, run continuous 24-hour protection cycling and Modbus RTU communication stress testing with fault recorder validation.
- Electrical Testing: Use Fluke multimeter & insulation tester to verify chassis ground resistance ＜0.5Ω and isolation resistance ＞10MΩ between auxiliary power, CT measurement and binary control circuits; test CT shorting link continuity.
- Firmware/Config Backup: Record embedded firmware revision via SPA PC tool, photograph RS485 bus address jumpers on baseplate, export full motor thermal curves, startup limits and fault protection settings to encrypted offline storage.
- Final QC & Packaging: Clean LCD surface with anti-static microfiber cloth, cap SPA optical port dust plug, separate plug-in IED and baseplate into independent ESD shielding bags, attach unified QC test tag with technician ID and 24-hour runtime timestamp before foam shockproof carton packaging.
Installation Pitfalls & 4-Step Replacement Guide
Common Installation Risks
❗ Firmware Version Mismatch: Newer firmware versions block thermal model configuration and Modbus communication; match software version before downloading motor parameters.❗ CT Open-Circuit Safety Hazard: Always engage baseplate CT shorting links before pulling the IED unit; unshorted CT terminals generate lethal high secondary voltage and arc flash risks.❗ RS485 Bus Address Conflicts: Duplicate bay node addresses flood substation serial bus with broadcast noise; photograph jumper positions before disassembly.❗ Auxiliary Supply Underrating: Peak 18W power draw during simultaneous trip output actuation; shared DC power supplies with multiple IEDs cause voltage sag and boot failures.❗ ESD Damage Risk: Ungrounded contact with rear PCB traces corrupts motor thermal logic and fault history storage.
4-Step Draw-out Assembly Replacement
- Pre-install: Lock out & tag auxiliary cabinet power, engage baseplate CT shorting links, wear ESD wrist strap, photograph CT wiring, DI/DO terminals and RS485 bus jumpers.
- Removal: Unlatch draw-out handle, pull plug-in IED fully out of fixed wired baseplate (baseplate stays hardwired to cabinet; only replace baseplate if terminals corroded/burnt).
- Install: If reusing original baseplate: slide new IED into rail and lock handle, replicate RS485 bus jumpers. If replacing full kit: mount new baseplate to cabinet panel, reterminate all CT and control wiring, set bus address jumpers, then insert and lock IED unit.
- Power-on Test: Restore auxiliary power, disengage CT shorting links, upload matched firmware and motor protection settings, inject stall/earth fault test signals to verify trip outputs, confirm stable Modbus SCADA communication and fault log recording.
FAQ
Q: What does suffix C55 H CNN02 stand for?
- C55: Fixed 5A CT secondary input (no 1A hardware support)
- H: Universal 100–240V AC/DC wide-range auxiliary power supply
- CNN02: Standard base I/O configuration, no optional RTD temperature measurement expansion module
Q: Can this model add RTD winding/bearing temperature monitoring later?A: No, the CNN02 suffix variant does not reserve expansion slots for RTD cards. If temperature monitoring is required, select REM610 variants with RTD expansion option suffixes.
Q: Can the plug-in unit be hot-swapped with auxiliary power energized?A: Draw-out design allows live extraction only after fully engaging CT shorting links. Never pull the unit without shorting CT circuits; full cabinet lockout is recommended for complete baseplate replacement.
Q: What warranty applies to stocked full kits with baseplate?A: Factory-new OEM assemblies carry 12-month official manufacturer warranty covering CPU, measurement circuits, relay outputs and baseplate terminals. Bench-tested surplus kits come with 6-month functional warranty; damage from CT open-circuit transients, miswiring or ESD voids coverage.
Q: Has ABB discontinued REM610 series?A: No formal EOL notice issued; REM610 remains active production for industrial motor MCC and medium voltage motor switchgear. It is purpose-built for motor protection, distinct from feeder-focused REF610/REF615 series IEDs.
Q: Will motor thermal curves and startup limit parameters stay intact after swapping the IED?A: All motor protection settings, thermal model coefficients and fault records store in the plug-in IED’s flash memory. Back up parameters from the old unit before removal and re-download to the new IED; firmware mismatches will corrupt configuration uploads.
Q: What communication protocols are supported?A: Native rear supports Modbus RTU and DNP3.0 serial; front SPA optical port for local commissioning; IEC 60870-5-103 requires external fiber media adapter. This base model does not integrate Ethernet/IEC 61850.
Q: Can protect distribution feeders or transformers?A: It can be used for simple cable feeder/transformer backup overload protection, but its core algorithm stack is optimized for asynchronous motor startup, stall and thermal stress control; feeder primary protection should use REF610/REF615 series feeder IEDs instead.
