SIEMENS6SC6100-0AB00Simodrive 610 / 210 Voltage Clamping (Voltage Limitation) PCB, 0.9 to 90 kW

Product Description

What this part is

Siemens 6SC6100-0AB00, the voltage clamping (voltage limitation) printed circuit board for SIMODRIVE 610 and 210 AC feed drive systems, covering the 0.9 to 90 kW range. Its job is DC-link overvoltage protection: when regenerated energy from a decelerating axis pushes the DC link voltage up faster than it can be returned to the mains, this board detects the rise and switches the surplus into a pulsed (braking) resistor so the link voltage stays inside safe limits. It is the control and switching board for that function — not a drive, not a power supply, and not an axis module. Siemens’ own board number is 462 010.9001.00.

Decoding the order code

6SC – Siemens SIMODRIVE converter and drive hardware6100 – the SIMODRIVE 610 supply, control and auxiliary board range0AB00 – the voltage clamping / voltage limitation PCB variant, 0.9/90 kW
Siemens’ full catalogue description for this item reads: SIMODRIVE 610/210 AC feed drive P.C.B, voltage clamping 0.9/90 kW (without pulsed resistor and installation material). That parenthesis is the important part — see below.

Published specifications

System: SIMODRIVE 610 and SIMODRIVE 210 AC feed drivesFunction: voltage clamping / voltage limitation PCB (DC link overvoltage limiting)Power range covered: 0.9 to 90 kWSiemens category: drive controllersSiemens board number: 462 010.9001.00Supplied without pulsed resistor and without installation materialApproximate dimensions: 254 x 229 x 51 mmProduct status: phase-outMade in Germany

What is NOT included — read this before you buy:
Siemens sold this item deliberately as the board on its own, and the order description says so explicitly: without pulsed resistor and without installation material. The pulsed resistor is the physical braking resistor that actually absorbs the energy this board switches, and the installation material is the mounting hardware kit. Neither is in the box, and the board cannot do its job without a resistor connected.

Also not included: the SIMODRIVE line supply infeed module; feed or axis power modules; control modules; the line filter or commutating reactor; DC link bus bars or bus connection kits; the equipment bus and drive bus cables; fuses; a rack, tier mounting or cabinet; or documentation.

If you are replacing a failed clamping board and your existing resistor and mounting hardware are serviceable, this is the correct item. If you are building the function up from nothing, budget for the resistor and hardware separately and size the resistor to the machine’s original specification.

What these specs mean in practice

Voltage clamping matters most on machines that decelerate hard or often. A SIMODRIVE infeed returns braking energy to the mains, but there is a limit to how fast it can do that, and there are conditions — a mains dip, a lost phase, an emergency stop that drops the supply contactor while axes are still moving — where there is nowhere for the energy to go. Without clamping, the DC link voltage climbs until something in the drive group fails, typically the electrolytic capacitors or an output stage. The pulsed resistor gives that energy somewhere to go and this board decides when to send it there.

The 0.9 to 90 kW span means one board covers a wide range of drive group sizes, so the board itself is rarely the sizing question. The resistor is: it has to be matched to the peak and average braking energy of your particular machine, and an undersized resistor will overheat and open, at which point the clamping function is silently gone and the board will appear healthy.

This is a phase-out product, so new stock is not being manufactured — surplus and repair are the supply routes.

Installation and setup notes

Isolate the drive group and allow the DC link capacitors to discharge fully before working anywhere near the link or this board — they hold a lethal charge after the mains is removed, and a clamping board sits directly across the link by design. Mount the pulsed resistor where its heat can escape and where it cannot ignite anything; braking resistors run genuinely hot in service and are frequently found installed too close to cabling. Check the resistor’s continuity and its thermal switch, if fitted, at the same time as changing the board, since a failed resistor and a failed board present identically as an overvoltage trip. Confirm the board variant against the machine’s parts list before fitting; the 6SC6100 range contains several boards of similar appearance doing quite different jobs. Handle as static-sensitive.

Interchange guidance

6SC6100-0AB00 is also written 6SC61000AB00, 6SC6100 0AB00 and 6SC6-100-0AB00, and carries Siemens board number 462 010.9001.00. Other 6SC6100 suffixes are different boards, not equivalents — for example 6SC6100-0GE01 is the power supply / infeed module in the same range, an entirely different function. Match the exact suffix. The 6SC611x feed modules (6SC6114-0AA00, 6SC6116-0AA00) are axis power stages and unrelated to this board, and the later SIMODRIVE 611 range using 6SN11xx numbers is a different generation with its own pulsed-resistor arrangements. Also searched as 6SC 6100 0AB00, 462-010.9001.00, 462 010.9001.00, Simodrive voltage limitation board, Simodrive voltage clamping PCB, and Simodrive 610 braking chopper board. Sold as 1 piece.