Description
KOLLMORGEN CB06551 | Servostar CD Servo Drive Spec Sheet
Product Introduction
When an automated manufacturing cell or robotic axis faults out because a legacy servo drive blows an output transistor stage, tracking down an exact-match replacement prevents extended facility downtime. The Kollmorgen CB06551 is not a modern software-heavy drive; it is a heavy-duty digital servo amplifier from the trusted Servostar CD lineage, engineered to deliver smooth sinusoidal commutation and tight closed-loop positioning under rigorous industrial duty cycles.
Mounted directly inside the control cabinet backplane, the unit takes motion references and scales them into high-frequency multi-phase current to drive connected motors with minimal torque ripple. It demands clean AC power feeds, strict thermal clearance, and proper feedback shielding, but once bolted into place, it restores the precise dynamic performance required by legacy Kollmorgen automation setups.
CB06551
Key Technical Specifications
| Parameter | Specification |
| Input Voltage | 115 / 230 VAC (50/60 Hz, single or 3-phase) |
| Continuous Output Current | 6 A RMS |
| Output Waveform | Sinusoidal PWM current output |
| Position Loop Update Rate | 500\ \mus (2 kHz) |
| Feedback Compatibility | Sine encoder / Resolver / Goldline motor feedback systems |
| Communication Interface | RS-232 / SERCOS interface options (hardware dependent) |
| Operating Temperature | 0^\circC to 45^\circC industrial standard |
| Weight | Approximately 1.9 kg (4.2 lbs) |
Application Scenarios & Pain Points
- High-Speed CNC Machinery: Axis contouring errors caused by thermal drift and aging current loops on older machines used to ruin tight tolerances until maintenance teams installed a verified replacement drive. Swapping in the CB06551 restored smooth velocity control.
- Automated Packaging Lines: Without stable low-speed commutation, aggressive indexing profiles would induce mechanical vibration and acoustic noise. This Servostar CD drive delivers clean sinusoidal output to keep motion smooth.
- Legacy System Modernization: A manufacturing facility avoided a costly, complete electrical architecture overhaul by dropping a verified surplus CB06551 straight into an existing control panel bay.
QA & Live Testing SOP (Trust Signal)
Legacy servo hardware demands rigorous verification before energizing high-voltage DC buses. Every incoming Kollmorgen CB06551 goes through a strict multi-point test protocol:
- Visual & Component Inspection: We check internal electrolytic capacitors for bulging or leakage, examine power bridge terminals for oxidation, and verify board cleanliness.
- Powered Bench Verification: The unit is mounted to a dynamic test rig, supplied with nominal AC power, and checked under simulated motor load conditions to verify velocity loop stability and fault-tripping thresholds.
- ESD-Safe Packaging: Units are sealed in heavy-duty moisture-barrier antistatic bags. When you unbox the CB06551, it is ready for immediate critical-path installation.
Field Engineer’s Pitfall Guide
- ❗ High-Voltage DC Bus Hazards: Never touch internal power terminals or disconnect motor leads immediately after powering down; residual charge on internal capacitors can cause severe electrical shock.
- ❗ Parameter File Mismatches: Always back up and transfer your exact tuning parameters and firmware configurations before swapping units; generic configurations can cause violent motor runaway on startup.
- ❗ Feedback Cable Shielding Omissions: Failing to maintain continuous, 360-degree shield grounding on the encoder or resolver cable will inject electrical noise, triggering sudden overspeed or feedback loss faults.
Intent-Driven FAQ
Can I replace the Kollmorgen with a modern AKD series drive directly?
Direct replacement with a modern drive often requires rewiring connectors and mapping software configurations, because the Servostar CD series relies on legacy hardware options and command interfaces. Matching the exact part number avoids costly downtime.
Is this specific unit brand new or surplus?
This inventory consists of verified surplus—un-installed factory backup stock or professionally tested working pulls preserved in climate-controlled storage.
What software is required to configure and tune this drive?
Commissioning and parameter adjustments require Kollmorgen’s legacy MotionLink or Servostar setup software along with the proper serial communication cable.
What kind of warranty comes with this purchase?
Every surplus drive includes a standard 1-year functional replacement warranty covering any electrical or mechanical defects under normal operating conditions.
Does the unit retain its parameters when powered down?
Yes, tuning profiles and operating parameters are stored in non-volatile memory, though keeping a digital backup of your machine file on your engineering station is strongly advised.
