Siemens 350 manual Causes No power supply for Fast OFF, No checkback signal from the AC contactor

Page 33

Alarm and fault messages

4.2 Alarm and fault messages

Table 4-9 Fault 36

(Alarm) AC contactor defective (no checkback), or Fast Stop button pressed

 

Condition

There is no signal at input 11/12 of the CU (green

 

 

connector); transferred via Profibus to the S7; drive has

 

 

received an ON command.

 

Causes

No power supply for Fast OFF

 

 

o Fast Stop button has been pressed

 

 

o Wire break in the Fast OFF circuit

 

 

o Defect in power supply for Fast OFF

 

 

o

Fire alarm system has been activated (if

 

 

 

installed)

 

 

No checkback signal from the AC contactor

 

 

o Defect in AC contactor control circuit (power

 

 

 

pack)

 

 

o Defect in AC contactor coil

 

 

o Defect in auxiliary contacts of AC contactor

 

 

o

Wire break

 

Measures

Unlock the Fast Stop button.

 

 

Replace the AC contactor

 

 

Unlatch the contacts of the AC contactor

 

 

Repair the cabling

Table 4-10 Fault 37

 

 

 

 

 

(Alarm) Several restart attempts in succession

 

 

 

Condition

The S7 has tried several times without success to

 

 

restart the drive

 

 

 

 

Causes

Fault in the drive

 

 

Operational fault (might be rectified automatically)

 

Measures

Repair the drive

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Contents Sinvert Photovoltaic Qualified personnel Safety instructionsProper handling TrademarksContents Figures TablesIntroduction About this documentationScope of validity Target group Chapter ContentsDocument structure HistoryApplication DescriptionFive safety rules in Germany Instructions and safety informationHardware operation Commissioning the inverterSwitching off and disconnecting the power supply Switching on Operator panel Operating the inverterPin Signal Operating mode Switching the inverter on and offLocal/Remote selector switch Displaying currently active alarms and faults Fault resetAdjusting the voltage Grid LED indicator barAutomatic mode / Test mode Maximum Power Point LED MPPFault display Standby operation LED Standby1 WEB’log Communication with the inverterWinCC PPsolarRed System components are malfunctioning Control Panel PPsolar Oscilloscope function PPsolar Device Information SINVERT-SettingsActual values Actual Value SummaryWeather conditions PV GeneratorMains Interface Data Storage PPsolar Energy10 Analysis window PPsolar Fault handling Alarm and fault messagesFault types Fault display / messagesAlarm and fault messages Meaning CategoryMain cause LED Differences in potential in the PV field Faults Causes/diagnostics/remedial measuresDiagnostics CausesMeasures Condition Fault in measured-value sensingCauses Cooling system is not working properly Heat generation is exceeding toleranceCauses Inlet air temperature too high No checkback signal from the AC contactor Causes No power supply for Fast OFFCauses No line voltage for Fast OFF Causes Measured DC voltage is too high13 Fault Alarm Vce monitor has responded 16 Fault Alarm Direct current too high Causes Contact in the signaling circuit is open Remedial Possible24 Fault Alarm Grid voltage outside tolerance Alarm without fault Contact addresses SupportGermany
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350, SINVERT 350 specifications

The Siemens SINVERT 350 series is a high-performance, lightweight inverter system designed to optimize energy conversion in solar power applications. With a power rating of up to 350 kW, this inverter model is tailored for large-scale photovoltaic installations and commercial applications. Its key features and technological innovations make it a valuable addition to any renewable energy project.

One of the main features of the SINVERT 350 is its advanced grid management capability. The inverter is equipped with sophisticated monitoring systems that ensure compliance with various grid connection standards, enhancing stability and reliability for the operator. This ensures seamless integration with existing power grids while optimizing energy yield. Additionally, it supports various grid support functionalities, helping maintain grid stability during high-demand periods.

Another notable characteristic is its modular design. The SINVERT 350 allows for easy integration with other units, scaling effectively to meet the power needs of larger installations. This modularity not only enhances flexibility but also simplifies maintenance and reduces operational costs over time. Each unit can be easily accessed, which minimizes downtime during servicing.

The SINVERT 350 also features advanced cooling technology. With its robust thermal management system, the inverter operates efficiently even under high temperatures, ensuring longevity and reliability. The design minimizes losses due to heat, effectively enhancing the overall energy conversion efficiency.

In terms of safety, the SINVERT 350 is built with integrated protection mechanisms, including over-voltage and short-circuit protections. These safety features safeguard both the inverter and the connected photovoltaic modules, ensuring a secure operating environment.

Another highlight is the inverter’s compatibility with the Siemens Smart Grid solutions. This integration means users can access comprehensive monitoring and analytics tools, enabling real-time performance tracking and optimization of energy output. With built-in web-based connectivity, operators can manage the system remotely, gaining insights and facilitating proactive maintenance.

In conclusion, the Siemens SINVERT 350 series combines robust performance, innovative technologies, and reliable safety features to create a compelling choice for large-scale solar energy projects. Its advanced design ensures operational efficiency and adaptability, thereby enhancing the overall viability of solar energy as a sustainable power source.
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