Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
Informazioni di base sul prodotto
Marca: SAMWHA EOCR (Schneider Korea)
Tipo di prodotto: EOCR-SS Series Knob-type Electronic Motor Protector (Replaces traditional thermal overload relays)
- Model Code Breakdown of EOCRSS-60NW7PQ
| Segmento | Codice | Definizione |
| EOCRSS | Serie | SS Economy Integrated Through-Core Motor Protector |
| 60 | Valutazione attuale | Built-in CT, adjustable rated current: 5.0～60A, compatible with 1.5～30kW three-phase motors |
| N | Modalità di protezione | Type N Fail-Safe: Contacts open and contactor trips upon protector power loss or fault; Type R does not trip when power fails |
| W7 | Alimentazione elettrica | W7 = Wide Voltage AC 180～480V (Suitable for 380/400/440V industrial three-phase power grids) |
| P | Configurazione dei contatti | P = Standard changeover contacts: 95(NC)/97(NO) (1 Normalmente aperto + 1 Normalmente chiuso) |
| Q | Additional Function | Q = Built-in Modbus-RTU RS485 communication; supports PLC/DCS remote monitoring, real-time current reading and fault code retrieval |
Specifiche tecniche principali
Specifiche tecniche principali3.1 Attuale & Time Adjustment
Intervallo corrente: 5～60A (10:1 wide adjustment ratio)
D-Time (Start Stall Delay): 0.2～30s adjustable to avoid false tripping caused by high motor starting current
O-Time (Overload Trip Delay): 0.2～30s adjustable to match motor thermal characteristic curves
3.2 Funzioni di protezione
- Sovraccarico & Protezione da sovracorrente (O-Time delayed trip)
- Three-Phase Phase Loss Protection (Instant trip)
- Stall Protection (D-Time + O-Time dual delay)
- Three-Phase Current Unbalance Protection
3.3 Specifiche elettriche
Operating Power Supply: AC 180～480V (W7 wide voltage)
Output Contacts: 5A/250VAC changeover contacts (95NC, 96COM, 97NO)
Comunicazione: RS485 Modbus RTU (Exclusive to Q suffix models)
Dielectric Withstand Voltage: 2kV for 1 minuto
Consumo energetico: ≤250mA
3.4 Ambiente & Installazione
Temperatura operativa: -20℃～+60℃; Temperatura di conservazione: -30℃～+80℃
Umidità: 30%～85%RH, senza condensa
Montaggio: Standard 35mm DIN rail or screw fixing
Circuito principale: Two through-core CTs (Pass L1 and L2 through protector windows)
- Front Panel Knobs & Indicators
- LOAD(UN): Motor rated current adjustment knob (5～60A)
- D-TIME: Start delay (Prevent false tripping during startup)
- O-TIME: Overload trip delay
- Green PWR LED: Power supply normal
- Red TRIP LED: Fault tripping (Number of flashes indicates fault type)
- RESET: Manual reset button; TEST: Unit self-test button
- Key Differences of PQ Suffix (vs Standard 60NW7)
- Built-in RS485 Modbus communication: Remotely read real-time operating current, fault logs and protector status; receive remote reset commands from upper computer
- PCB of Q model integrates communication terminals, supporting multi-protector bus networking
- Ideal for automated production lines, pump stations, central air conditioning and centralized monitoring control rooms
- Scenari applicativi tipici
380V three-phase fans, pompe dell'acqua, compressori d'aria, belt conveyors and mixing motors
Motors with rated current 5～60A, no external current transformer required
Control cabinets requiring PLC remote motor data collection and remote fault reset
- Linee guida per il cablaggio
- Circuito principale: Run motor phase wires L1 and L2 through the two CT windows of the protector; L3 does not need to pass through
- Power Terminals A1/A2: Connect to AC380V control power supply
- Circuito di controllo: 96COM as common terminal; wire 95NC normally closed contact in series with contactor coil (Type N opens on power loss); connect 97NO normally open contact to fault alarm indicator light
- RS485 Communication: A/B differential bus, daisy-chain wiring for multiple devices
- Troubleshooting Matrix
| Fenomeno di guasto | Causa ultima | Soluzioni |
| TRIP LED stays lit and cannot be reset | Sovraccarico continuo / motor stall | Ridurre il carico, increase set current, check mechanical jamming |
| TRIP LED flashes twice | Phase loss | Inspect main circuit fuses, contactor contacts and motor wiring |
| No response after power-on, LED PWR spento | Abnormal power supply to A1/A2 | Measure 380V power supply, replace the protector |
| No Modbus communication data | A/B wires reversed / duplicate device addresses | Swap RS485 A/B polarity, set unique address for each device |
- Modelli alternativi della stessa serie
- Non-communication version: EOCRSS-60NW7P (No RS485, costo inferiore)
- 24–240V power supply version: EOCRSS-60NS7PQ (S7 = 24~240V AC/DC)
- Higher current rating: For motors over 60A, select EOCRSS-100 series with external CT
