Siemens 7lf4 110 Manual

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How to Use the Siemens 7LF4 110 Digital Time Switch

The Siemens 7LF4 110 is a digital time switch that can be used to control electrical devices according to a programmed schedule. It has one channel and no special functions. It can store up to 28 switching commands and has a battery backup for power failure protection. In this article, we will show you how to set up and use the Siemens 7LF4 110 digital time switch.

Setting the Current Time and Date

Before you can program the switching commands, you need to set the current time and date on the device. To do this, follow these steps:

Press the next and change buttons simultaneously to enter the programming mode. The display will show year.

Press the change button to adjust the year. Press the next button to confirm and move to the next digit.

Repeat this process for the day, month, hour and minute.

The device will automatically calculate the weekday and display it. It will also show the summer time indicator if applicable.

Press the next button to exit the programming mode. The device will update the switching status.

Programming the Switching Commands

You can program up to 28 switching commands for each channel. Each command consists of a time (hour and minute) and a status (on or off). To program the switching commands, follow these steps:

Press the next button to enter the programming mode. The display will show prog 1.

If there are already switching commands stored, press the next button to scroll through them until you reach an empty slot. The first digit will blink.

Press the change button to adjust the hour. Press the next button to confirm and move to the next digit.

Repeat this process for the minute and the status.

If you want to program more commands, press the next button to move to the next slot. The display will show prog 2.

If you want to exit the programming mode, press the next button until you see --:-- --. Press the next button again to exit. The device will update the switching status.

Using the Manual Switch Function

You can manually override the programmed switching commands by using the manual switch function. To do this, follow these steps:

Press and hold the change button for more than two seconds. The display will show manual on/off.

If you want to switch on or off manually, press the change button briefly. The display will show manual on or manual off.

If you want to return to automatic mode, press and hold the change button for more than two seconds again. The display will show manual auto.

The device will resume following the programmed switching commands.

I hope this article was helpful for you. If you have any questions or feedback, please leave a comment below. 66dfd1ed39

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