60WKS‑CE240/3PB is a low-power analog servo amplifier manufactured by Kollmorgen Seidel. It is specifically designed to drive SM series brushless synchronous servo motors. Powered by a three-phase isolation transformer with a 240V DC bus, the unit integrates a braking circuit, comprehensive protection functions, and status monitoring. It is suitable for 19-inch rack mounting or installation in compact cabinets, and meets the requirements for high-precision speed/torque control and four-quadrant operation, serving as the core drive unit for classic analog servo systems.

Positioning and Purpose

• Dedicated drive: Exclusively used to drive SM series brushless synchronous servo motors with closed-loop speed/torque control.
• Power supply: Three-phase industrial power supply plus isolation transformer, with a rated 240V DC bus.
• Installation environment: Must be vertically installed in an enclosed steel electrical cabinet, compatible with 19-inch racks or K1.1‑L compact housings.

  Application scenarios: High-precision motion control applications such as machine tools, automated production lines, testing equipment, and packaging machinery.

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• 60WKS-CE240.pd

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  Electrical Parameters (60WKS‑CE240/3PB)

Item Specification

Rated Output Current (4-quadrant) 3 A

Peak Output Current (approx. 5 s) 7.5 A

Rated DC Bus Voltage 240 VDC

3‑Phase Input Voltage 3×60–172 VAC (50/60 Hz, +10%)

Rated Installed Capacity 0.5 kVA

Braking Circuit Pulse Power 5.4 kW

Output Stage Switching Frequency 2×8.5 kHz

Minimum Motor Inductance 2.5 mH

Auxiliary Output ±15 V / 20 mA

Control Signals ±10 V analog setpoint; 24 V PLC‑compatible digital signals

Mechanical & Mounting Characteristics

• Form Factor: Dual Eurocard format, 6 HE height, 9 TE width,

• dimensions 220 × 233.4 × 45 mm,

• weight 1.4 kg.

• Interfaces:
• Control signals: DIN 41612 C64
• Power signals: DIN 41612 D32
• RLG / tachometer: SubD 9-pin
• Backplane: Supports two backplane types: F60WKSMB (rear connection) and R60WKSMB (front connection).
• Cooling: Natural convection under rated operating conditions; forced air cooling required above 40 ℃ or when an external 24 V auxiliary power supply is connected.
• Ambient Conditions:
• Operating temperature: 0–45 ℃
• Humidity: 5–85% RH, non-condensing
• Altitude: No derating up to 1000 m

Key Features

• Four‑Quadrant Operation: Reversible drive, fast braking and energy feedback; built‑in braking circuit to dissipate regenerative energy.
• Dual Analog Setpoints: SW1 fixed ±10 V; SW2 adjustable 0–100%, supporting superimposed reference.
• Front‑Panel Adjustable Parameters: Ramp, setpoint, offset, tachometer, AC gain, peak current and RMS current all adjustable via knobs.
• Digital Control Interface: Enable, 1:1 control, limit switches; opto‑isolated, direct PLC connection compatible.
• Status Monitoring Outputs: Armature current monitor IDC, speed monitor VTA, ready relay BTB, I²t overload output.
• Optional Extensions: -01 function board (ramp + limit + 1:1), -24V external auxiliary power option.

Protection Mechanisms

• Overcurrent / short‑circuit / earth fault (motor side)
• Bus overvoltage / undervoltage, auxiliary power ±15 V abnormality
• Power device overtemperature, I²t RMS current limiting
• RLG rotor position and tachometer wire break monitoring

• Internal fuses: DC bus 10 AT, auxiliary power 1 AT, brake board 3.15 AT

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• Installation and Commissioning Notes
• Use only the specified isolation transformer (e.g., 3T0.7K‑240) + mains filter to ensure EMC performance and safety.
• Route power cables and signal cables separately; ground the shielding over a large area, and install ferrite cores near motor cables.
• Before power‑on: reduce AC gain and peak current settings, and verify that enable interlocks and emergency stop circuits are functional.
• Wait at least 2 minutes after power off, and ensure the bus voltage is below 40V before plugging, unplugging or wiring.

Frequently Asked Questions (FAQ)

1. What to do if the motor does not move and produces no torque?

• Check whether 24V is applied to the enable signal (Terminal 16).
• Verify that the digital ground DGND (Terminal 12) is properly connected and solder bridge LB2 is closed.
• Check if the RMS current knob P307 is turned fully counterclockwise (current limit disabled).
• Verify complete wiring of the current reference loop ISA/ISE.

2. BTB green light off and FAULT red light on?

• Check the three-phase input and fuses F1/F2/F3 for integrity.
• Troubleshoot short circuits or earth faults in the motor or cables.
• Confirm normal bus voltage and auxiliary ±15V supply.
• Cycle power to reset after the fault is removed.

3. Motor chattering or oscillation?

• Decrease the AC-GAIN P305 counterclockwise to avoid the oscillation point.
• Check shielding and connections of the RLG/tachometer cable to rule out broken wires or poor contact.
• Ensure single-point grounding between AGND and the control system to eliminate ground loops.

4. Can a standard three-phase power supply be used directly?No. A suitable three-phase isolation transformer is required for power supply. Otherwise, safety, EMC performance and warranty will be affected, and the amplifier may be easily damaged.
5. How to set peak and RMS current?

• Peak current IPEAK (P306): clockwise for maximum, counterclockwise for reduction; factory setting is maximum.
• RMS current IRMS (P307): current limiting based on I²t characteristic; clockwise to increase. It is recommended to adjust gradually from low to high.
• Calibrate via the IDC monitor port using a multimeter or oscilloscope.

6. Can a DC tachometer be used?Yes. Solder bridges on the mainboard must be modified: set LB10 to DC, close LB11/LB13, close LB12 if necessary to enhance filtering, and adjust R310 to match the tachometer voltage.

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