Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | KPS-600/20-ESC |
| Product Family | KUKA KRC2 |
| Product Type | Servo power supply module |
| Input Voltage | 3×400–480 VAC |
| Input Frequency | 49–61 Hz |
| Rated Input Current | 25 A |
| Peak Input Current | 95 A (0.5 s, cycle); 135 A (0.5 s, cycle) |
| DC Bus Voltage (Continuous) | 510–765 V DC |
| DC Bus Voltage (Short-Time) | 60–800 V DC |
| Output Peak Current | 156 A |
| Safety Interface | ESC flat-ribbon connector |
| Status Indicators | LED diagnostics |
| Typical Article Numbers | 00-105-352, 00-115-115, 00-134-525 |
| Condition | New Original / New Surplus / Refurbished (Tested) |
| Warranty | 12 months |
Product Introduction
KUKA KPS-600/20-ESC is a KRC2 servo power supply module that converts three-phase 400–480 VAC into a 600 V-class DC intermediate circuit for KUKA KSD/KSP servo drives. It also hosts an ESC safety node, allowing the controller to shut down drive power when a safety circuit fault occurs.This module is used in legacy KRC2 cabinets, including standard KRC2 configurations with an ESC safety board. The “ESC” suffix indicates the flat-ribbon safety connector; the REL variant omits it and is not interchangeable in standard KRC2 cabinets. Known successor article numbers include 00-134-525.
Installation & Configuration Guide
Preparation — 10 min
- Record controller serial number, article number, and installed software version.
- Photograph all cable positions, ESC ribbon connector, and LED status before disassembly.
- Confirm the replacement matches KPS-600/20-ESC, not KPS-600/20-REL.
- Back up robot parameters and program data.
- Verify 3×400–480 VAC supply and upstream fusing.
Removal — 5–10 min
- Shut down the robot controller and lock out main power.
- Wait at least 5 minutes for DC bus discharge.
- Measure DC bus voltage before touching terminals.
- Disconnect all plugs and the ESC ribbon cable.
- Remove mounting hardware and extract the module.
Installation — 10 min
- Inspect connectors for bent pins, carbon tracking, or corrosion.
- Seat the module fully before tightening mounting hardware.
- Reconnect the ESC ribbon cable in the correct orientation.
- Reconnect power, motor bus, and diagnostic cables.
- Verify grounding and shield connections.
Power-On & Test — 10 min
- Measure input voltage: 3×400–480 VAC ±10%.
- Power up and check LED status.
- Confirm DC bus voltage reaches 510–765 V DC.
- Verify no ESC or drive-bus faults on the KCP.
- Run a low-speed axis test and monitor for thermal or bus alarms.
Troubleshooting Quick Reference
| Symptom | Most Likely Cause | First Check |
|---|---|---|
| No LEDs, no bus voltage | Missing 3-phase input or blown fuse | Measure input voltage and upstream fuses |
| DC bus will not charge | Precharge resistor or contactor fault | Check bus voltage after 5 min discharge wait |
| ESC fault on KCP | Loose ribbon cable or safety loop open | Reseat ESC connector; check safety inputs |
| Drive will not enable | Safety node or K1 contactor issue | Verify ESC status and contactor feedback |
| Overvoltage alarm | Regenerative energy or supply spike | Check braking resistor and line voltage |
| Intermittent shutdown | Overheating or loose power terminals | Inspect thermal sensor and torque terminals |
Dimensions, Mounting & Wiring Notes
- Dimensions: Not confirmed from verified OEM data for the exact KPS-600/20-ESC article number. Use the original module as a mechanical reference.
- Mounting: Installed inside KRC2 controller cabinet; secured with cabinet mounting hardware and plugged into the internal DC bus and safety backplane.
- Terminal Notes: High-voltage DC bus terminals remain energized after power-off. Always wait 5 minutes and verify voltage before handling.
- Wiring Notes: The ESC flat-ribbon connector must match the cabinet safety board. Do not substitute a REL-type module in an ESC-configured cabinet.
FAQ
Is KPS-600/20-ESC the same as KPS-600/20-REL?
No. The ESC version has the flat-ribbon safety connector for standard KRC2 cabinets. The REL version lacks this connector and is used in specific GM-style KRC2 cabinets.Which article numbers are compatible?
00-105-352, 00-115-115, and 00-134-525 are commonly referenced KPS-600/20-ESC variants. Always verify the installed article number and cabinet configuration before replacement.Can I use this in a KRC4 cabinet?
No. KPS-600/20-ESC is a KRC2 component. KRC4 uses KPP/KSP/KSP600-family power and drive modules.I see an ESC fault after replacement. What should I check?
Check the ESC ribbon cable seating, cabinet safety board connection, emergency-stop circuits, and safety door loops. A loose ribbon connector is a frequent cause.Is this module still produced?
KUKA has discontinued KPS-600/20-ESC. Surplus and tested units remain available for KRC2 maintenance.Do you test these before shipping?
Function is verified under test conditions when tested stock is supplied. That includes visual inspection, supply check, connector inspection, LED check, and basic DC bus verification. Full robot-cell testing is not performed unless specifically arranged.What warranty do you offer?
12 months, unless otherwise stated. Condition — New Original, New Surplus, or Refurbished (Tested) — is confirmed per unit.
