CB06551 Kollmorgen Servostar CD Servo Drive

Description

Product Model: CB06551

• Product Brand: Kollmorgen
• Product Series: Servostar / Servostar CD
• Product Features:
  • Supports 115/230 VAC input, capable of single- or three-phase operation
  • Digital current loop control with auto-tune and filtering features
  • Compatible with RS-232 / SERCOS / feedback interface (Sin/Cos)
  • Compact industrial design with built-in fault diagnostics and thermal protection

Applications & Industry Context

Across factories and machine rooms, the CB06551 drive fills a vital role in medium-duty axes demanding precise torque, speed, or position control. It is often found in pick-and-place systems, robotic joints, packaging machinery, small presses, and linear motion stages where you don’t need ultra-high power but still demand responsiveness and reliability.

Consider a photolithography tool: motion axes must transition gently but swiftly, avoid overshoot, and settle with low vibration. A drive like CB06551—with good current loop tuning and digital filtering—helps suppress noise, reduce ringing, and maintain smooth trajectories under variable load. In retrofits of older machine tools, replacing aging analog drives with CB06551 often yields noticeable reductions in vibration and improved cycle time consistency.

In lower-power axes of CNC machines (such as rotary tables or smaller feed axes), or in servo-assisted conveyors, the CB06551 offers excellent value. Because it accepts standard line voltages (115/230 VAC), it is flexible in many retrofit scenarios. Given its built-in diagnostics, many maintenance teams prefer the CB06551 as an upgrade path: you get more built-in status visibility with manageable integration cost.

What makes it stand out: whereas generic drives may lack adaptive tuning or feedback filtering, the CB06551 is oriented toward motion control tasks, not just brute motor power. That alignment makes it more suitable in systems where precision and smooth dynamic transitions matter more than absolute horsepower.

Product Role & System Fit

The CB06551 is not a motion controller, nor is it a general-purpose inverter. Rather, it is a mid-range servo drive (amplifier) specifically built to accept command inputs (from a controller) and convert them into motor-phase currents with feedback closed. In other words, it is the power interface of the servo loop.

In a typical architecture, a motion controller (say, a PLC with interpolation, or a dedicated motion CPU) outputs torque or velocity commands or digital setpoints (via RS-232, SERCOS, or other interface). The CB06551 receives those, closes inner current loops, monitors faults, and outputs motor power. Because it supports digital control and filtering, it offloads a lot of real-time burden from upstream controllers.

The CB06551 fits into systems that use the Servostar / Servostar CD family. Its logic and firmware are consistent with those of its siblings, simplifying configuration and maintenance across axes. When multiple units are used in the same machine, operators benefit from uniform parameter sets, fault codes, and tuning approaches.

In retrofits, the CB06551 often replaces older analog or less capable drives. It can interface over RS-232 or SERCOS (depending on variant) and supports standard feedback types (Sin/Cos encoders) so integration is feasible without wholesale redesign. Because of its moderate size and power, it suits smaller cabinets or distributed drive architectures.

Technical Features & Benefits

Below are some of the standout features of the CB06551, paired with real-world benefit context.

• Dual Voltage (115 / 230 VAC) Compatibility
  The drive accepts either single-phase or three-phase input at 115/230 VAC, giving flexibility in installations where power availability may differ. This means in retrofit contexts you do not always need new line voltage or a transformer.
• Digital Current Loop with Filtering
  The CB06551 uses a digital current loop control approach and allows low-pass filtering (first or second order) to stabilize current response under load disturbances. This helps reduce high-frequency ripple, improve stability, and maintain consistent torque under dynamic demands.
• Auto-Tune and Adaptive Protection
  It provides auto-tune or parameter adaptation tools that help simplify setup, especially when matching varied motors. Also, it monitors motor temperature, voltage imbalance, and fault conditions, enabling protective shutoffs in abnormal conditions.
• Feedback and Communication Interfaces
  The CB06551 supports Sin/Cos encoder feedback (for position loops) and integrates with RS-232 or SERCOS interface (depending on variant). This enables closed-loop synchronization, multi-axis coordination, or drive-level status monitoring.
• Compact Industrial Form Factor
  It is designed to be mounted in control cabinets (vertical clearance recommended) and keep a modest footprint. Its relative compactness helps in retrofit layouts or machines with limited space.
• Built-In Diagnostics & Fault Logging
  The drive includes internal fault history, status display, and diagnostic flags. That means maintenance personnel can more quickly identify overcurrent, undervoltage, thermal faults, or feedback failures.
• Thermal & Environmental Robustness
  While it is primarily for indoor cabinet use (i.e. IP00), the module includes thermal protection and is designed for ambient operation within typical industrial temperature ranges.

Taken together, these features make the CB06551 a versatile, solidly performing servo drive that balances cost, functionality, and reliability. It’s especially suited to medium-power axes where precision matters more than brute force.

Technical Specifications Table

Here is a representative spec summary of CB06551:

Note: Always consult the official Kollmorgen datasheet or product manual for definitive numbers before procurement or integration.

Installation & Maintenance Insights

From years of field deployment, here are practical tips when installing or maintaining a CB06551 drive.

When installing, ensure adequate spacing and vertical clearance. These drives benefit from vertical orientation so convection and internal ventilation (if present) are effective. Leave at least 0.5 in (12–13 mm) clearance from adjacent modules.

Mount in a cabinet with controlled ambient temperature (preferably <45 °C) and clean air (low dust). Avoid placing the drive directly above heat sources or where airflow is obstructed. Use proper cable routing: keep motor power wiring and feedback wiring separate to reduce cross-talk. Twisted-pair or shielded cables for encoder lines are strongly recommended.

During wiring, label both ends of each connection (motor phase, encoder, enable lines) — miswiring is a frequent cause of commissioning delays. At first power-on, test the no-load condition. Monitor the current, voltage, and temperature trends and watch for any erratic fault codes before applying full load.

When calibrating, use the CB06551’s auto-tune (if variant supports) or manual tuning. Start with conservative gains and gradually increase while observing system stability. Overshoot or oscillation often indicates excessive loop gain or inadequate filtering.

For maintenance, the drive has no mechanical wear parts, so failures are rare. But periodically (every 6–12 months in heavy-use systems) inspect connectors, wiring retention clips, and ensure the module is firmly seated. Clean dust from cabinet fans and ventilation paths. If abnormal heat or drift is detected, check power and feedback cables for damage or grounding issues.

Always backup configuration files or SSV parameter sets. If you swap in a drive replacement, you can load the same settings to shorten re-commissioning time.

If a fault occurs (e.g. overcurrent or thermal), review the stored fault history and error codes rather than guessing. The built-in diagnostics of the CB06551 often point to the root cause: feedback error, overcurrent event, under-voltage, or motor-phase fault.

Related Models

Here are some related units and variants you might compare:

• Servostar CB06552 — similar drive with slight variant in current or interface
• PRD-B040SSIC-63 (CB06551 variant) — version designation for certain model families
• CB06550 — sibling model in same Servostar family with different power or current specs