E-51 Error Displayed On The 7500E

Cause

The time on the 7500E was turned back while cards were stored in memory.

Solution

If the 7500E's time has been turned back, the 7500E cannot accurately total the time due to the last IN punch on the card being later than the current time on the card. This would be common around Fall Daylight Saving Time change when the 7500E is turned back by one hour. This can also occur if the time changed for Daylight Saving Time in the spring on an incorrect day and the 7500E was manually changed back by one hour.

The solution would be to wait until the time has passed OR Reset that card and issue the employee a new one.

Cause

The date on the 7500E was moved back while cards were stored in memory.

Solution

If the 7500E's date has been moved back, the 7500E cannot accurately total the time due to the last IN punch on the card being later than the current date and time on the computer. This would be something that if the 7500E's date was incorrect when initially setting. The solution would be to do an All Cards Reset, verify the date/time is correct and issue new cards.

Cause

The last punch on the employee timecard was within the same minute.

Solution

If an employee punches in, they must wait 1 minute in order to punch OUT. If an employee punches OUT, they can immediately punch back in.

Cause

Timecards are not being read appropriately by the 7500E.

Solution

If the 7500E is reading E-51 for All the timecards, there may be an issue with the 7500E. If the 7500E was purchased within the last 30 days, contact the vendor where the 7500E was purchased to have it replaced. If the 7500E was purchased more than 30 days ago, the 7500E must be replaced.

If the 7500E is reading E-51 for certain timecards, the barcode on the cards may be unreadable by the 7500E. If the E-51 only occurs with new timecards but the older cards still punch as normal, it may be an issue with the newer batch of timecards. Contact the reseller for the timecards and have them replaced.