SEW-Eurodrive / MOVITRAC B

Removing the FBG11B keypad from a running MOVITRAC triggers a stop response. It is not a plug-in display you can borrow from a working drive while the line is going.

MOVITRAC B is the SEW general purpose inverter, on conveyors and materials handling across New Zealand.

Reading a MOVITRAC B type code

Take MC07B0015-5A3-4-00.

SEW confirms the power reading directly: a 1.5 kW motor can be connected to an MC07B0015.

The voltage and phase group

The most useful part to be able to read, because it decides the supply.

The last digit of that group is the phase count. A 1 is single phase and a 3 is three phase.

So MC07B0015-2B1 and MC07B0015-203 are the same power on single and three phase. One character.

The small ratings do not follow the same progression

Worth flagging so nobody calculates a size from the code.

From about 1.5 kW upward the code reads as tenths of a kilowatt. The smallest frames use their own numbering.

Send the whole code and we will confirm it rather than working it out.

Two front slots, and they are not interchangeable

The thing to understand before ordering any MOVITRAC front module.

SEW states that MOVITRAC B has 2 slots for directly pluggable modules, that modules can only be connected to the predefined slot, and that only one module per slot is possible.

Three modules compete for the same slot

The specific constraint, in SEW's own words: FIO11B, FSC11B, FSC12B and FSE24B connect to the same slot and thus cannot be used simultaneously.

So you cannot have the analog setpoint module and the communication module at the same time. A machine using an analog speed reference cannot also take an FSC11B in that slot.

That is a real design constraint and it catches people trying to add a network to an existing analog installation.

Tell us what is fitted and what you are trying to add, and we will check it before quoting.

The FSC11B is a shared port

And only one thing connects to it at a time.

SEW lists what an FSC11B can connect, noting only one option possible:

So a drive with a DOP terminal on the FSC11B cannot also take a laptop on the same port. Unplug one to use the other.

Worth knowing before someone drives to site expecting to connect a PC to a drive that has an operator terminal on it.

Removing the keypad stops the drive

Stated plainly by SEW and genuinely surprising.

Removing the FBG11B keypad will trigger a stop response.

That last one is worth remembering. A MOVITRAC that stops for no apparent reason, on a machine with vibration, is worth checking at the keypad seating before anything else.

This is the opposite of the Lenze AIF module on our 8200 page, which can be pulled during operation. Do not assume the behaviour carries across brands.

The UBP11A parameter module

The part that makes a MOVITRAC replacement quick, and most sites do not have one.

SEW describes the UBP11A parameter module as giving simplified data backup with an option for series startup.

Two reasons to have one

A failed drive becomes a swap. Fit the replacement, load the parameters from the module, run.

And a line of identical conveyor drives can be set up in minutes. That is what series startup means, and on a plant with twenty MOVITRACs it is the difference between an afternoon and a day.

It costs very little and no software licence is involved. If a site runs MOVITRAC and has no UBP11A, that is the cheapest useful thing to buy.

The keypads

The FBG11B reads the error memory, which is the first thing to check on a drive that has been tripping.

The DBG60B gives plain text rather than codes, which matters when nobody has the fault list to hand.

Note the DBG60B is the same keypad used on MOVIDRIVE, so one serves both ranges.

The S0 variant needs an external supply

A trap on a specific unit type.

SEW is explicit: the MC07B...-S0 unit type must always be supplied by an external DC 24 V power supply unit.

So an S0 drive will not power up on mains alone. If one has been fitted where a standard unit was, and nobody ran the 24 V, it does nothing.

Check the suffix. It is at the end of the type code and easy to overlook.

Fieldbus options need external supply too

SEW notes that fieldbus options such as DFP21B, DFD11B and DFE11B must always be supplied externally.

That is why a fieldbus card can go dead when the drive is isolated, and why the PLC loses the node even though the network is intact.

If a drive drops off the bus whenever the mains is switched, check whether the card has its own 24 V.

Derate 20 percent at 500 V

A sizing point that catches people, and SEW repeats it throughout the manual.

The mains and output currents must be reduced by 20 percent from the nominal values at a mains voltage of 3 x AC 500 V.

So a drive rated for a motor at 400 V will not carry the same motor at 500 V. The nameplate figure is not the figure at the top of the voltage range.

Relevant on plant running at the upper end, and on machinery built for other markets.

Touch guards are not optional

SEW carries a direct danger notice: uncovered power connections, severe or fatal injuries from electric shock.

If a panel has been worked on and the guards were not refitted, that is a finding. They are cheap and separately available.

The fieldbus option cards

CANopen is integrated in the basic unit, so it does not need a card.

The DFP21B is common to MOVITRAC and MOVIDRIVE, so a PROFIBUS card may transfer between them.

Interface adapters

A USB11A is the one most sites need and do not have. Without an adapter nobody can connect MOVITOOLS MotionStudio to a drive.

Worth having on the shelf alongside the spares.

The accessories that go with a drive

An output choke or filter is fitted where the motor cable is long. If one is in the panel it was there for a reason, and leaving it out on a rebuild brings the original problem back.

Motor protection inputs

MOVITRAC accepts either type of motor thermal device.

An open circuit on the thermal input reads as an over-temperature. If a drive trips on motor temperature and the motor is cold, check the device and its wiring first.

Startup assumes a four-pole motor

Useful to know when commissioning something unusual.

SEW motor startup is designed for 4-pole motors. A two-pole or six-pole motor may need a different approach.

The default operating mode is V/f, which SEW recommends where there are no particular speed quality requirements.

Multi-motor and group drives are different things

They are commissioned differently, because coupled motors share the load and decoupled ones do not.

If one drive runs several motors, tell us which arrangement it is.

What to send us

The full type code, including the phase digit and any S0 suffix.

What front modules are fitted. Keypad, analog module or communication module.

What fieldbus card is fitted, if any.

Whether you have a UBP11A or the parameter set.

The motor nameplate. Commissioning needs it.

Whether the drive runs more than one motor.

Before ordering a replacement

Read the error memory on the FBG11B. It holds what happened.

Check the keypad seating if the drive stops for no reason. Removing it triggers a stop.

Check the thermal input if it trips on motor temperature with a cold motor.

Check the fieldbus card has its 24 V if the drive drops off the bus when the mains is switched.

Check the front module rather than the drive. A failed communication module looks like a dead drive from the PLC side.

What we can supply

Current production. MOVITRAC B across the power range and all supply variants, front modules, keypads, UBP11A parameter modules, fieldbus cards, interface adapters, line and output chokes and filters, braking resistors, touch guards and mounting accessories. Quoted with a delivered lead time.

Discontinued. Earlier MOVITRAC generations. Surplus and tested used, which keeps an existing machine on its original parameter set and mounting.

Modules separately. Often the actual fault, and always cheaper than a drive.

A sensible MOVITRAC spares holding

None of these are expensive and all of them are cheaper than the alternative.

We buy SEW

MOVITRAC units and their modules hold real value. Keep front modules and fieldbus cards with their drives. See Sell To Us.

Related

SEW-Eurodrive overview, covering MOVIDRIVE, MOVIMOT and the gearmotor ranges.

For inverters from other brands see ABB ACS580, Schneider Altivar, Siemens SINAMICS G120, Allen-Bradley PowerFlex, Mitsubishi FR and Lenze.

Send us your type codes

Include the phase digit and any S0 suffix. And tell us what is in the front slots. Quotes in NZD including GST.

Request a quote

Industech is an independent supplier of new, surplus and used industrial automation equipment. We are not an authorised distributor of, approved by, sanctioned by, or affiliated with SEW-Eurodrive. SEW-Eurodrive, MOVITRAC, MOVIDRIVE, MOVI-PLC and MOVITOOLS are trademarks of SEW-Eurodrive GmbH & Co KG. EtherCAT is a trademark of Beckhoff Automation. PROFIBUS and PROFINET are trademarks of PROFIBUS Nutzerorganisation. All trademarks, brand names and part numbers are the property of their respective owners and are used here for identification purposes only. Information on this page is for identification and does not constitute electrical design or safety advice.