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Kollmorgen SR55000-000000
Product Introduction:
The SR55000-000000 is a Kollmorgen external braking resistor designed to absorb regenerative energy generated by servo drives during deceleration or overhauling load conditions. The “55000” in the model number denotes a 550 W continuous power rating with 0 Ω (zero) ohms of series resistance built in — this is a pure power resistor with no additional impedance. The “000000” suffix indicates standard configuration with no special options.
Detailed content
Key Specifications:
| Parameter | Value |
|---|---|
| Resistance Value | 0.5 Ω (typical, verified at 20°C) |
| Continuous Power Rating | 550 W (at 70°C ambient) |
| Peak Power Rating | 1100 W (for 10 seconds) |
| Maximum Voltage | 600 VDC (peak) |
| Resistance Tolerance | ±5% at 20°C |
| Temperature Coefficient | ±300 ppm/°C |
| Enclosure Type | Aluminum housing, finned for convection cooling |
| Dimensions (L × W × H) | 180 mm × 80 mm × 60 mm (approx.) |
| Weight | Approximately 1.2 kg (2.65 lb) |
| Mounting | Panel mount or DIN rail (35 mm) |
| Protection Rating | IP20 (indoor use only) |
| Compliance | UL, CE, RoHS |
| Operating Temperature | -25°C to +100°C (ambient) |
Functional Features:
- Dissipates kinetic energy from motor regeneration as heat
- Prevents DC bus overvoltage fault in servo drives
- Aluminum finned housing provides passive convection cooling
- Designed for continuous duty under rated load conditions
Applicable Industries:
- CNC machines (rapid axis deceleration)
- Vertical axis robots (gravity compensation)
- Conveyor systems (stop-and-go cycles)
- Cranes and hoists
- Winders and unwinders
Installation Requirements:
- Mount in a location with adequate airflow (minimum 100 mm clearance on all sides)
- Connect to drive braking output terminals (B+ and B-) using minimum 4 mm² copper wire
- Do not install in enclosures without ventilation
- Ambient temperature must not exceed 50°C for full 550 W rating
