Case Studies
Useful Worksite Knowledge

Understanding the Cause of Failure Using an Inverter Display

Displaying codes for the details of failures on a panel

An inverter is used to control motors in TSUKASA's main equipment. On its display panel, you can check error codes (the details of failures) when the equipment stops due to overload.

◎ An example of error codes

E.0C1・・・Overcurrent during acceleration
E.0C2・・・Overcurrent during constant speed
E.0C3・・・Overcurrent during deceleration stop

The status regarding where errors occur are recorded in the alarm history

The inverter records the alarm history (for the past eight alarms). Since you can also check the "error codes (details of failures)," "output frequency during operation," "current value," "voltage," and "energization time," on the alarm history screen, you can understand the status regarding where an error occurs in detail, which is useful for identifying the cause of a currently occurring failure.

For example

The PowRotor suddenly stopped!


You might've just wondered "What's wrong with it?," but you could not guess the cause

If you check the inverter display,

"OL (overcurrent) code" → "This could be caused by powder clogging"

If the same failure occurs over and over again, it could be a problem with the equipment itself

◯ The inverter display helps to identify the cause of failures as a first hint

◯ It also enables in-house recovery if they are simple problems

◯ The state of the equipment can be accurately communicated to TSUKASA for repair!

◯ Understanding the alarm history can also be helpful for maintenance planning

TSUKASA's support system

Repair advice over the phone

We carefully listen to the status of the equipment shutdown. If you know the error codes and alarm history, the support TSUKASA can provide will be smoother. If it is a simple failure, in some cases, we will tell you how to repair it over the phone, and you can handle the recovery by yourself.

Repairs and recoveries by visiting customers' plants

We will ask you to show the actual equipment and will perform on-site repair and recovery operations, referring to the error codes and alarm history.