Product Description

Model Number Interpretation

• 27106: Base part number for GV3000 brake interface module.

• 27: 27 Ω standard braking resistance.

• R: Standard duty (vs. X for enhanced high-frequency braking).

Technical Specifications

• Resistance: 27 Ω (±5%).

• Power Rating: 1.5 kW continuous; 5 kW peak (10% duty cycle).

• DC Bus Voltage: 380–460 VAC input (540–650 VDC bus).

• Switching Element: Wearless transistor switch (terminals 1(−)/2(+)).

• Control Logic: Closes when DC bus >50 V and braking current =0; opens during active braking.

• LED Indicator: Right LED illuminates when braking current (IB) >0.

• Enclosure: Open-frame PCB, panel-mount.

• Operating Temperature: 0°C to +50°C.

• Weight: ~0.5 kg (1.1 lbs).

Interface & Wiring

• DC Bus Terminals: Connect to drive’s DC+ / DC−.

• Resistor Terminals: 1(−) / 2(+) for external 27 Ω braking resistor.

• Control Signal: Tied to drive’s braking control logic (no external wiring needed).

• LED Status: IB>0 (braking active) → ON; IB=0 → OFF.

Core Functions

• Regenerative Energy Dissipation: Converts motor regenerative energy to heat via external resistors, preventing DC bus overvoltage.

• Smooth Deceleration: Enables controlled, rapid stops for high-inertia loads (fans, conveyors).

• Overvoltage Protection: Shunts excess DC bus voltage during deceleration, safeguarding drive components.

• Status Indication: LED provides visual braking status for troubleshooting.

Compatibility

• Drive Series: GV3000/SE (Sensorless Enhanced), VTAC7 (HVAC).

• Drive Models: 25V4160, 25G4160, 25G4260, 3V4160, etc.

• Input Voltage: 380–460 VAC three-phase.

Installation & Maintenance

• Mounting: Secure to panel near drive; allow 50 mm clearance for airflow.

• Wiring: Use 14–16 AWG stranded wire for DC bus/resistor connections; torque terminals to 1.2 N·m.

• Pre-Power Check: Verify resistor resistance (27 Ω ±5%); check for short circuits.

• Maintenance: Inspect terminals annually for looseness/corrosion; clean dust from PCB.

• Safety: Disconnect drive power and wait 5 minutes for DC bus discharge before service.