Siemens Sinumerik 840D Application

For customers interested in learning more about the Siemens Sinumerik 840D Application here is an excerpt of the catalog from Siemens.

SINUMERIK® 840D sl provides an open, flexible and powerful CNC system with the SINAMICS S120 design for up to 93 axes. With characteristics that describe it as decentralized, scalable, open, inter-connectable and with a wide range of functionality, the SINUMERIK 840D sl is suitable for use in almost every machining technology and it sets
the standard in dynamics, precision and network integration. The SINUMERIK 840D sl offers you uniformity in its programming, operation and machining cycles. With its efficiency in programming, installation and commissioning, this CNC system platform is characterized by its optimum design, innovative NC functionality, communication
and openness. The SINUMERIK 840D sl, available in several performance variants, can be perfectly customized to the practically every machine and machining technology in the manufacturing industry.

Read More

Booting the Siemens PCU 20 and PCU 50

When booting the Siemens PCU that you have installed, it should be a relatively simple process, but there can be some problems that come up, so we wanted to go through a few to help anyone who is having issues. When the power supply is switched on, the PCU boots automatically. The system software is installed in the factory and is ready to run. The basic display appears on the screen if the MMC has booted successfully

Read More

Reloading Siemens Sinumerik Start-up Archive Files

Reloading Siemens Sinumerik Start-up Archive Files for the NC and PLC

1. Using OP, (Operator Panel) select hardkey Machine  then Menu select
Observe:  The main operating areas horizontal softkey menu appears.   Machine, Parameter, Program, Services, Diagnosis and Start-up.
2. Using OP, select softkey Services
Observe:  Current operating area is displayed at top left of display.
3. Using OP, select the hardkey  (etc…/extension of the softkey menu key).
Observe:  Horizontal softkey menu contains a key labeled Series start-up
NOTE: If softkey Series start-up does not appear then the password access rights need to be  set. See the procedure Setting Password Access rights Page 3.
4.     Using OP, select horizontal softkey Series start-up.
Observe:  Display shows ‘Create series startup archive’ window.
NOTE: If Display shows Read startup archive window, skip step 5
5. Using OP, select vertical softkey Read start-up archive
Observe:  A new window will appear, labeled Read Series Start-up Archive.
6. Using OP cursor keys highlight the appropriate NC or PLC archive file.
Note:  The backup files are created by the builder and / or end user and the specific name may vary.   Suggestion: Select a file which refers to the NC or PLC and has the most recent date
7. Using OP, press the vertical softkey Start.
Observe:  The window will shift to the Job Log display.  a. Answer the query ‘Do you wish to perform a series start-up?’  By pressing the               vertical softkey Yes.  b. A series of prompts will appear, telling you the status of the upload of the various    series start-up files from the NC archive.  c. The message ‘NC Reset – Please wait’ will now appear as many as 6 times. This is   normal.  d. The control will shift back to the Read Series Start-up Archive display.
8. If necessary, repeat steps 6 and 7, selecting the appropriate archive file, to load both the NC and the PLC.

Read More

Simodrive E/R Module Fault – Troubleshooting

We had a customer who was getting an alarm on their Simodrive E/R Module with a fault on the machine after the hydraulic was put on. They had tried resetting the machine but the same alarm would come back up. The Simodrive part number was 6SN1145-1BA01-0DA1, the only light on it was the green LED and the terminals were both reading 27VDC. The customer was considering buying a new drive but wanted to check to see if there was some way of resolving the issue without buying a whole new Simodrive.

Based off the LED configuration that the customer was having, we determined that the external enable signal 63 was missing, so they needed to double check their connections. When the customer checked, the contact from the hydraulic connector was not making a good connection. All the customer needed to do was replace the contact kit and restart the machine which got them up and running. We would highly recommend always double checking the connections on a unit before replacing it, because there can often be a simple issue that doesn’t require the full unit to be replaced.

Contact MRO Electric and Supply at (800)691-8511 or email us at about repair services.

Simodrive Repair Service

We know that downtime is crippling for all of our customers, which is why we stock almost all of our inventory to be ready to ship overnight to a customer or even be couriered in. Still, there are some times when even we don’t have the part you need in stock, or you just want to save some money, so this is why we offer repair on your existing parts. One of our main repair capabilities is for Siemens Simodrives. Our Simodrive Repair Service has a turnaround time of 3-5 days, and we are even able to get some repairs done sooner. All of our repairs come with a 1 year warranty and are fully tested before shipping back out.

MRO Electric and Supply maintains a comprehensive stock of new and used FANUC CNC and FANUC Robots parts, Siemens parts, Yaskawa parts, etc. If you need a FANUC replacement part, please call 800-691-8511 or email

6FC5210-0DF22-2AA0 Siemens PCU – Product Video

Below is a product video for a 6FC5210-0DF22-2AA0 Siemens PCU unit which we have in stock and ready to ship. This is a Siemens control unit with software set to run a CNC system. We have a video showing the booting up of a similar PCU 50 Siemens unit on a blog post here where we show one of these units powering up. They are basically a computer with an operating system loaded on that you can hook up to a display, keyboard, and mouse to get booted up and programming your system. Visit MRO Electric and Supply’s website for more parts from Siemens. For any questions email or call 800-691-8511.

Siemens 6SN1118-0DJ23-0AA0 Control Card – Product Video

Here is a video of one of the Siemens 6SN1118-0DJ23-0AA0 Control Cards that we have in stock. This is a control card for a Siemens Simodrive system, and would be inserted into a Simodrive power module such as a 6SN1123-1AA00-0EA1. We occasionally have people call in to order just the control card or just the power module, not realizing that they are two separate units that are sold separately. When deciding that you have an issue with one of these, make sure you test both the power module and the control card and order accordingly. The control cards can be used in multiple power modules so there is not one particular setup for installing one of these. If you are replacing the control card, you should also test the power module before replacing the control card because you can end up damaging the replacement 6SN1118-0DJ23-0AA0 control card if it is installed in a faulty power module.

The 6SN1118-0DJ23-0AA0 unit in this video has been fully refurbished, retested, and repackaged in our own packaging. We have plenty of all of the different Simodrive control cards in stock, so if you’re looking for a similar unit just give us a call at 800-691-8511 or email for a quote. The individual parts page for this unit is here, hopefully this helps and if you need anything else please let us know.