Description
The KOLLMORGEN 60WKS-CE240/22PB is an analog servo amplifier from the 60WKS series. Despite being commonly described in some listings as a servo motor, the available technical documentation identifies this model as a servo amplifier / transistorized inverter used for industrial motion-control applications.
It is designed to drive compatible servo motors and provide controlled current output for motion systems. The 22PB version is rated for a 240 V DC-link voltage and provides 22 A rated output current, with a short-duration peak current capability of up to 50 A.

⚙️ Product Datasheet
🏷️ Brand: KOLLMORGEN
🔢 Model: 60WKS-CE240/22PB
📋 Product Name: Analog Servo Amplifier
🖥️ Series: 60WKS Series
⚙️ Product Type: Transistorized Servo Inverter
🔌 Rated DC-Link Voltage: 240 V DC
⚡ Rated Output Current: 22 A
🚀 Peak Output Current: 50 A for approximately 5 seconds
🔋 Installed Load at Rated Current: 3.7 kVA
🔌 Rated AC Supply: 3 × 60–172 V AC, 50/60 Hz, +10% maximum
📡 Current Control Loop Bandwidth: 1 kHz
⚙️ Output Stage Clock Frequency: 2 × 8.5 kHz
🔧 Minimum Motor Inductance: 0.7 mH
🔥 Dissipation at Rated Current: 140 W
⚡ Ballast Pulse Power: 5.4 kW
🔋 Ballast Continuous Power: 135 W
🛡️ Overvoltage Switch-Off Threshold: 325 V
📐 Dimensions: 220 × 233.4 × 45 mm
⚖️ Weight: Approximately 1.4 kg
🏭 Application: Industrial Servo and Motion Control Systems
✨ Condition: New Surplus / Surplus Stock
The published 60WKS technical data identifies the 22PB version as the 22 A variant with 3.7 kVA installed load, 50 A peak current, 0.7 mH minimum motor inductance, and 1.4 kg weight.
🔧 Main Features
• Analog servo amplifier architecture for industrial motion applications
• 240 V DC-link operation
• 22 A rated output current
• Up to 50 A peak output current for short-duration acceleration demands
• Four-quadrant operation for motor acceleration and deceleration
• Integrated ballast circuit for regenerative energy handling
• Supports compatible servo motor feedback systems
• Compact double-Eurocard mechanical design
• Suitable for installation in industrial electrical cabinets
• Designed for precision machine and automation motion systems
❓ Frequently Asked Questions
🔸 Q1: Is the 60WKS-CE240/22PB a servo motor?
No. The available manufacturer technical documentation identifies the 60WKS series as a transistorized inverter or analog servo amplifier. It is used to control compatible servo motors.
🔸 Q2: What is the rated output current?
The 60WKS-CE240/22PB is rated for 22 A output current during four-quadrant operation.
🔸 Q3: What is the maximum peak current?
The amplifier can provide up to 50 A peak current for approximately five seconds under the specified operating conditions.
🔸 Q4: What DC-link voltage does this model use?
This model is designed for a rated DC-link voltage of 240 V DC.
🔸 Q5: What is the installed load requirement?
The 22PB version has an installed load rating of approximately 3.7 kVA at rated current.
🔸 Q6: Does the amplifier handle regenerative energy?
Yes. The unit includes a ballast circuit. The published specifications list 5.4 kW pulse power and 135 W continuous ballast power.
🔸 Q7: What should be checked before replacement?
Before replacing an existing unit, verify the complete model number, motor type, feedback interface, supply configuration, DC-link architecture, current requirements, cabinet installation, and existing wiring configuration.
🔸 Q8: What are the physical dimensions?
The published mechanical dimensions are approximately 220 × 233.4 × 45 mm, with a weight of approximately 1.4 kg.
🔹 Recommended KOLLMORGEN Models
- KOLLMORGEN 60WKS-CE240/3PB – Analog Servo Amplifier
- KOLLMORGEN 60WKS-CE240/6PB – Servo Amplifier
- KOLLMORGEN 60WKS-CE240/12PB – Analog Servo Drive
- KOLLMORGEN 60WKS-CE240/26PB – High-Current Servo Amplifier
- KOLLMORGEN AKM21 Series – Brushless Servo Motor
- KOLLMORGEN AKM22 Series – Industrial Servo Motor
- KOLLMORGEN AKM43 Series – Brushless AC Servo Motor
- KOLLMORGEN AKD Series – Servo Drive
- KOLLMORGEN S300 Series – Digital Servo Drive
- KOLLMORGEN S700 Series – Industrial Servo Drive
⚠️ Note: The model designation 60WKS-CE240/22PB should be verified carefully against the installed system before purchase or replacement. Servo amplifier compatibility depends on the connected motor, feedback system, supply voltage, cabinet configuration, and application requirements.
