S406AM-CA

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The S406AM-CA is manufactured by Kollmorgen as part of their S400 Servo Drive Series. The S406AM-CA is a Master module with a Rated DC Link Voltage of 310-560 V. It also features a Rated Output Current of 6A rms and a Peak Output Current of 12A rms.

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Product Description:

The S406AM-CA servo amplifier features a rated supply voltage of 230V to 400V, a maximum installed of 7kVA for S1 operation, and a 450V overvoltage switch-off threshold. It weighs 3kg and measures 100mm x 267mm x 240mm, uses a vertical mounting position, and provides ample forced ventilation to maintain a temperature of 45 degrees in the control cabinet. Leave ample clearance beneath the amplifier for optimum cooling. An additional fan can be used if the amplifier is used in unfavorable ambient conditions. Ensure there is a conductive connection to the mounting plate.

This Kollmorgen S400 amplifier has a master module function and a current rating of 6Arms. It comes integrated with safety features such as temperature monitoring for both the motor and the amplifier, phase-failure monitoring, short-circuit protection, soft-start, and overvoltage detection. The S406AM-CA features a complete digital control thanks to encoder emulation, digital current controller, a digital speed controller that is programmable, and a position controller. It has an IP 20 protection class. A control cabinet should be provided to protect it from extrinsic objects and liquids. Ambient conditions are a relative humidity of 95%, installation elevation of 1000 meters above sea level, and an operating temperature range of 0 to 45 degrees.

The S406AM-CA comes with an LED display that shows the status of the amplifier.  Some of the parameters displayed are master address, reset input active, supply status, and axis module. Since this is a master module, ensure that less than 7 axis modules are connected. The integrated feedback systems, motor holding brake, and thermal sensors must be reinforced using insulation against system components. To avoid electrical shock, ensure the S406AM-CA is securely earthed to the protective earth busbar.

Clock Frequency of Output Stage
8 kHz
Maximum Installed load for S1 operation
7KVA
Maximum Load Inductance
40nH
Minimum Load Inductance
7.5mH
Overvoltage Switch Off frequency
450V
Peak Output Current
12A
Rated DC Bus Link Volatge
160-320V
Rated Output Current
6A
Rated supply Voltage
1 x 115V to 3 x 230V
Weight
3kg
  • S406AMCA
  • S-406AM-CA
  • S4O6AM-CA
LED / display code What it means Likeliest root-cause on an S406 installation Fast corrective action
F02 – DC-bus over-voltage Bus rises above ≈ 450 V during decel/regeneration Brake resistor open, too small, or decel ramp too steep Ohm-check the resistor, fit ≥100 Ω / 100 W unit, or lengthen decel-time in DriveGUI 
F05 – DC-bus under-voltage Bus sags below threshold at enable/accel Brown-out, single-phase drop, undersized xfmr Measure bus while accelerating; stiffen mains, add line reactor 
F06 – Motor over-temperature Winding PTC ≥ 155 °C Blocked airflow, ambient > 40 °C, duty > 6 A cont. Let motor cool, clean shroud/fan, review duty cycle 
F01 – Heat-sink over-/under-temp Drive ≤ 0 °C or ≥ 100 °C Cabinet fan/filter clogged or room hot Keep enclosure 0–45 °C, clean/replace fan & filter 
F12 – Motor phase missing One phase open at enable Loose MS connector, crushed cable Meg-ohm test (> 500 MΩ), re-terminate connector 
F14 – Output-stage fault IGBT / gate-drive error or hard short Cable short to earth, internal drive failure Disconnect motor; if fault persists after power-cycle, send drive for repair 
F19 – Mains phase missing One AC input phase lost while enabled Blown fuse, contactor fault Restore three-phase supply, replace fuse, reset drive 
F23 – CAN-Bus-Off CANopen network stopped Broken cable, wrong baud, duplicate node-ID Check 120 Ω terminators, cable shield, baud rate; reboot network 
F11 – Brake fault Holding-brake coil open/short Damaged brake cable, wrong wiring Measure coil resistance; fix wiring; clear fault 
F27 – STO conflict Enable & STO signals contradictory STO relay logic out of sequence Verify STO contacts are closed before ENABLE; reset fault 
Error Code Meaning on drive display
F01 Heat-sink temperature above 80 °C → amplifier shut-down
F02 Over-voltage detected on DC-bus link
F03 Following-error limit exceeded (position deviation)
F04 Feedback fault (encoder cable break, short, or ground)
F05 Under-voltage on DC-bus (mains sag)
F06 Motor-temperature sensor reports over-temperature
F07 Internal low-voltage rails outside tolerance
F08 Overspeed – motor velocity exceeds configured limit
F09 EEPROM checksum error (corrupted parameters)
F11 Brake-control fault (brake cable break or short)
Spec (key data) S406AM-CA(baseline) S406A-CA S406BA-CA S403AM-CA S403A-CA S443M-CA
Module type Master Axis Axis Master Axis Master
Continuous output current 6 A rms  6 A rms  6 A rms  3 A rms  3 A rms  3 A rms 
Peak output current (5 s) 12 A rms  12 A rms  12 A rms  9 A rms  9 A rms  9 A rms 
Rated DC-link voltage 160 – 320 V DC  310 – 560 V DC  160 – 320 V DC  310 – 560 V DC  310 – 560 V DC  310 – 560 V DC 
PWM clock frequency 8 kHz (switchable 16 kHz*)  8 kHz  8 kHz  8 kHz  8 kHz  8 kHz 

Frequently Asked Questions about S406AM-CA:

Q: How does the S406AM-CA handle faults that occur during operation?

A: For serious faults and errors, the S406AM-CA is designed to automatically switch off the amplifier output stage(BTO/RTO contact remain closed), however for other faults an appropriate error code is indicated on the LED display present on the front panel.

Q: Does the S406AM-CA require an additional air blower for optimum operation?

A: Yes, the S406AM-CA requires an electrical add-on fan to achieve rated power even under unfavourable ambient conditions. Instuctions on how the fan should be mounted is clearly stated in the documentation supplied with the servo drive.

Q: How long can the S406AM-CA be stored before use?

A: The S406AM-CA should not be stored for more than 1 year without restriction. If the drive is to be stored for more than a year, the the capacitors in the device must be reformed before it is commissioned for use.

Q: How should the S406AM-CA be cleaned and maintained?

A: The S406AM-CA features a maintenance free design and should never be opened by the user. However the casing of the amplifier can be cleaned with isopropanol or similar liquid.

Q: What is the recommended mounting position for the S406AM-CA?

A: The S406AM-CA should be installed vertically according to the instructions in the manual supplied with it. It should also be installed in an additional control cabinet that meet at least the IP54 protection class.


Internal Product Review

  • ‘‘The S406AM-CA from Kollmorgen is designed to be maintenance-free, alleviating any overlap in maintenance planning. This product is designed to be swapped out with a new model should there be any fault or defect.’’

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