Technical Parameters Parameter Category Specification Product Family / Type Digital Combined Motor Starter Relay (Electronic Overload Relay + Controller) Standard Compliance IEC/EN 60947-4-1, IEC/EN 60947-5-1 Rated Auxiliary Supply Voltage (Us) 48 - 250 V DC / 48 - 240 V AC, 50/60 Hz (Auto-ranging, suffix -70) Rated Motor Current (Iu) Adjustable via display, typical range 0.1A - 600A (dependent on connected current sensors). The -600- indicates compatibility with 1A CTs, but the relay itself covers a wide range via settings. Current Sensors Requires external Current Transformers (CTs) or Rogowski Coils. Standard options: 1A or 5A secondary CTs. Core Protection Functions • Thermal Overload (49) Digital thermal replica with separate heating/cooling curves. Settings: Iu (FLC), Trip Class (5…40), Ambient Temp compensation. • Phase Unbalance (46) Protection based on negative sequence current. • Phase Loss (Fuse Blow) Detection of a missing phase. • Earth Fault (50N) Residual current protection (requires external Core Balance CT). • Locked Rotor / Stall (48) Short-time pick-up protection. • Underload (37) • Jam (Current Increase) • Number of Starts / Time Between Starts Programmable start inhibition. Control & I/O Functions • Contactor Control Built-in logic to directly command a bypass contactor (for start/stop). This is a key feature that replaces separate logic. • Digital Inputs 4 programmable inputs (e.g., Start, Stop, Reset, Remote Set). • Output Relays 4 programmable relays (Changeover contacts). Typically assigned to: Ready, Running, Alarm, Trip, or Control. Human-Machine Interface (HMI) • Display 2-line, 16-character backlit LCD for settings, Iu value, motor current, thermal capacity %, and fault messages. • Indicators 6 LEDs: PWR, RUN, TRIP, ALARM, COMM, and a multifunctional LED. • Navigation 3 buttons (Up, Down, Select/Enter) for local programming. Monitoring & Diagnostics • Measured Values Phase currents (L1, L2, L3), ground current, thermal capacity %, motor status. • Fault Memory Stores last fault type (e.g., overload, unbalance, phase loss). Communication (Optional) Can be equipped with a plug-in communication module: Profibus DP, Modbus RTU, or DeviceNet. Operating Temperature -25°C to +60°C Storage Temperature -40°C to +85°C Mounting Mounts directly on DIN rail (35mm). Physically designed to be combined with ABB contactors (e.g., AF series) for a compact starter assembly. Protection Rating IP20 Dimensions (W x H x D) Approx. 90 mm x 140 mm x 120 mm (Variable based on configuration). Key Design Feature "Bypass" Operation: After starting the motor, the relay switches the current path from its internal electronics to a parallel-connected power contactor, reducing internal heat and power loss. This is central to its "combined starter" design.