A robot servo drive may absorb significant regenerative energy in short pulses while its terminal and busbar see continuous motion-related vibration. A static current number does not describe this operating boundary.
Calculate braking, regeneration and main-bus conditions
Record DC-link voltage, braking peak current, pulse width, repetition, main current and ambient temperature. When a brake terminal sits near a resistor or power device, include the local heat source, insulation and harness bend radius.
Validate solder joints under dynamic service loads
Brake-resistor wiring or screw assembly can send pull and torque into the terminal. Use supports, stops and strain relief to unload the pad, then measure drop after vibration, temperature cycling and service mating.
- Define brake pulse, continuous current and allowable rise
- Validate coplanarity, wetting, pull-off strength and torque window
- Check polarity keying, wire direction and service-tool clearance
Servo-drive RFQ fields
Provide DC-link voltage, braking-resistor data, pulse curve, PCB land pattern, terminal material and finish, vibration profile, mounting direction, cycle count, packaging and annual volume. Do not treat one brake peak as continuous ampacity.