© Siemens AG, 2009 2/18
Contents
0. Introduction........................................................................................................................................3
1. Principle Functions.............................................................................................................................3
1.1 Normal Mode................................................................................................................................3
1.2 Buffer Mode..................................................................................................................................3
2. Settings..............................................................................................................................................4
2.1 Setting the Cut-in Threshold.........................................................................................................4
2.2 Setting the End-of-Charge Voltage ..............................................................................................5
2.3 Setting the Charging Current........................................................................................................5
2.4 Setting the Buffering Time............................................................................................................6
2.5 Disconnection of the Output Voltage............................................................................................6
2.7 Setting the ON/OFF Operating State ...........................................................................................7
2.8 Compatibility.................................................................................................................................7
3. Signaling............................................................................................................................................7
3.1 Normal Mode................................................................................................................................7
3.2 Full Charge...................................................................................................................................7
3.3 Buffer Mode..................................................................................................................................7
3.4 Alarm Messages...........................................................................................................................8
3.4.1 Lack of Buffer Readiness.......................................................................................................8
3.4.2 Battery Change Required......................................................................................................8
4. Communication with the PC (Only Devices with Serial or USB Interface).........................................8
4.1 Design of Interface.......................................................................................................................8
4.1.1 Serial Connection ..................................................................................................................8
4.1.2 USB Connection....................................................................................................................9
4.2 Transmit Data of the SITOP DC UPS Module..............................................................................9
4.3 Receive Data of the SITOP DC UPS Module...............................................................................9
4.3.1 Serial Connection ..................................................................................................................9
4.3.2 USB Connection..................................................................................................................10
5. Operating Modes .............................................................................................................................11
5.1 Long Power Failure in Devices without an Interface..................................................................11
5.2 Brief Power Failure in Devices without an Interface...................................................................12
5.3 Long Power Failure in Devices with an Interface.......................................................................13
5.4 Brief Power Failure in Devices with an Interface........................................................................14
6. Battery Modules...............................................................................................................................15
6.1 Battery Module Selection ...........................................................................................................15
6.2 Discharge Characteristics for Lead-Gel Battery Modules ..........................................................16
6.3 Instructions for the Characteristic Field/Selection of the Battery Capacity.................................17
