Wohlenberg Guillotine Multiple Faults

We were called out to look at a Wohlenberg MCS-2-TV guillotine for a local packaging company. The machine's video display was gradually fading out to a blank screen (video demonstration below). The display would come back after turning the ...

Wohlenberg Keypad Display Repair

Over the last week we have been working on a Wohlenberg 115 Guillotine (built in 1999). A large number of the keys were no longer registering key presses which made the whole machine difficult to operate. These large membrane keypads often ...

Tracing a Eurotherm 425 SS Contactor Circuit

We recently received three Eurotherm 425 Solid State contactor's in for repair. These units were designed to be a low cost replacement for mechanical contactors. They are used for switching single phase resistive loads up to about 40A. S...

Wrapper Stretched

Just had an interesting problem with a pallet wrapping machine at a local plastic bottle manufacturer. It is used to wrap clear plastic film around a pallet of plastic bottles with a sufficiently small tension so that they don't get crushe...

Fibre Side lay sensors

The input end of a Komori printing press includes a system for ensuring that either side of the paper is butted up against a known edge. The way it does this is that there is a paper detector setup in line with the edge that detects if the...

Old Sockets on a Light Barrier

Yesterday I worked on a photo eye barrier on an Itotec guillotine. A Currie & Co model PE330. The green LED which indicates the barrier is uninterrupted was out and stopping the blade from coming down. For guillotines the light barrier...

Taking control of a Phenix Recloser

The old DOS PC running a Phenix Recloser for one of our customers gave up the ghost recently. The use of computer hardware, software and machine hardware means that everything needs to work for anything to work at all. This can make it qui...

OpenBSD in a wire bender

The last couple of days have been spent repairing a servo motor drive from a Macsoft 3D wire bender. Some capacitors had failed, damaging the circuit board and causing two of the IGBT's to fail. We were able to get the machine going again f...