1. General Description

2. Model Breakdown

• 64WKS: 60WKS series, 4‑quadrant analog servo amplifier

• M240: DC‑link = 240 VDC

• 50: 50 Arms continuous output current

• ‑RLG: Option set = Rotor position decoder + Logic 24 V + Generator/regenerative control

3. Key Specifications

Power Input

• 3‑phase AC: 60–172 VAC (±10%)

• Frequency: 50 / 60 Hz

• Rated apparent power: 9 kVA

• DC‑link: 240 VDC

Output

• Continuous current: 50 Arms

• Peak current: 100 Arms (≤3 s)

• Operation: 4‑quadrant (regenerative)

• Brake chopper (integrated):

  – Pulse power: 5.4 kW

  – Continuous power: 135 W

Control & Feedback (RLG Option)

• Command: ±10 V analog (speed / torque)

• Feedback: DC tacho / resolver (rotor position)

• Loops: PI speed + PI current

• I/O: Enable, fault relay, differential setpoint inputs

• Logic supply: 24 VDC (via RLG option)

Protection

• Overcurrent, overvoltage, undervoltage, overtemperature

• Short‑circuit, ground fault

• DC‑link & auxiliary fuses

Mechanical & Environmental

• Protection: IP00

• Cooling: Convection + external fan

• Operating temp: 0 °C to +45 °C

• Weight: approx. 1.2 kg

• Mounting: 19” rack (up to 4 units in 6U)

4. RLG Option Features

• Rotor position decoder: supports resolver / tacho feedback

• Logic 24 V: integrated 24 V for control circuits (no external PSU)

• Generator mode: enhanced regenerative braking for high‑inertia / vertical loads

5. Compatible Motors

• Kollmorgen / Seidel brushed DC servo motors (240 V, up to ~10 kW)

• Brushless servo motors with resolver feedback

• Third‑party 240 V class DC / BLDC motors

6. Typical Applications

• High‑dynamic CNC machine tools

• Industrial robots & manipulators

• Printing, textile, packaging machinery

• Metalworking & general automation

7. Status & Notes

• Discontinued by Kollmorgen; available only as new old stock or refurbished.

• Direct replacement: Kollmorgen AKD series digital drives (400 V class).