Frequently Asked Questions (FAQ)

Yes. Locally and Remotely with Manually and Automatic command.

At least 4 Number of RS 485, 4 Number of Ethernet, & 2 Number of OFC (if available)

Based on the Site scenario, Number of ICR

At least 6 Numbers

Yes.

At a time Possible to push 4 different servers through FTP, JSON, Rest API, MQTT

Yes.

Up-to 110GB and can be extended up-to 500GB

24 DI and 4 DO. Yes can be extended as per the requirement.

Yes.

Yes.

Yes, Necessary for local monitoring.

Yes.

Yes.

Yes, By using PPC we can control the Power factor of solar Plant?

Yes, By using PPC we can control active and reactive power.

These are the PLCC communication panels which give all inverter communication to Datalogger or portal.

To trip the Breakers, and to turn ON the hooter or indicator

Yes, TCP/IP communication having provision of Multi master

Yes, By using RS 485 extensions we can extend extra RS 485 ports.

ACB, MCCB, VCB breakers are the most commonly used in solar plants.

Yes, SuryaLog is compatible with DNP3 and IEC 104 converters.

Yes, Suryalog can take data from existing SCADA from Modbus TCP/IP and Modbus RTU.

Yes.

Yes.

OFC, RS 485, Wireless

200 to 1500 VDC, up to 30A strings can connect to SMB.

2 DI and 4 AI can be configure in SMB card.

Yes, We need to add a String Monitoring Card.

Power and Data SPDs, Fuses are used to protect the SMB panel from ext. electrical parameter.

SMB is a String monitoring Panel and SCB is a simple Combiner box.

Yes.

16 sensors.

All types of solar sensors can connect to a Weather station.

Pyranometers, Module & Ambient temperature, Humidity, Anemometer, Rain gauge, Albedometer, Soil sensor.

Yes, Compatible with all types of SCADA.

Yes, we can Monitor data remotely.

Yes, All types of analog and Digital outputs are compatible with weather logger.

Yes, You can mount the any make and model of sensor on Weather pole.

Digital, for its better accuracy and no need to add extra circuitry for this.

Recommended distance by sensors is 20 meters.

Calibration is a process of checking, and comparing the output of sensors with reference standard sensors.
We have calibrated our sensors in IEC certified guidelines and equipment’s. We also check actual output with reference sensors.

Type and testing is defined by IEC. IEC check the sensor and define its type as per result. Suryalog sensor is a type 2 sensor

Test reports are used to check the working of sensors and devices.
It defines the all input output ports are working properly or not. Device functionality is properly working or not.

Generally, once after every two years Calibration is needed.

EMS is energy management system. In EMS we can monitor the source and load of industry. We can manage the load as per our requirement and analysis the load.

BMS is Building management system. In BMS we can monitor the source and load as per building.

If sensors output is Analog, then it gives proper output up to 20 meters. Above 20 meters data may get loss.

Shield is a disc like structure which protect ambient temperature sensor from sunlight.

There are two types of wind speed and direction sensor
1. Ultrasonic
In this type of sensor, the ultrasonic wave is use to detect behavior of wind.
It checks the response over receiver is it slow or fast what is the effect on wave because of wind.

2. Cup and vane.
In this type of sensor Cup is use to collect wind and cup is spin as per speed. Where, vane is use to check direction.

Rain gauge sensor having following types
1. Bucket tapping- it collect amount of water in bucket and depends on it. Sensor calculate the amount of rain, density of rain.
2. Ultrasonic sensor-it count the tapping of rain drops. Depends on drop size and frequency. Amount of rain and density of rain is calculated.

There are two methods for calibration
1. LAB calibration-
A lamp is used with focused light it sends Irradiation on the sensor from a particular distance and diameter.
2. Open-air testing:
By keeping the testing sensor direct in sunlight with reference calibrated sensor.

These processes involve testing the device at specific points, recording and analyzing the results.
And Test certificates show the result of device working.

Cloud cover sensor is use to know the description of sky.
If Cloud is present in sky it gives the output in percentage.

This sensor is used to track the position of Sun.
This sensor gives only direct radiation data.(no diffused or refracted radiation)

Specification and classification of instruments for measuring hemispherical solar and direct solar radiation, is an ISO standard for the classification of pyranometers and pyrheliometers.

ISO 9846 gives the calibration-related data.

Calibration process of Pyranometer and Radiation sensors are carried out according to the ISO 9847:1992 recommended by World Meteorological Organization (WMO) where the following two stages are defined in which Pyranometer is compared with reference having higher quality with a reliable, recent, and traceable calibration.
Inlab Calibration – Using an artificial light source.
Outdoor Calibration-Testing Under Sunlight with reference sensor.

For up to 10 MWp sites, 1 WMS is required. After that, every 25 MWp need 1 WMS.
WMS also depends on Geographical area. If the all ICRs is not in same plane, then may be required more than 1 WMS in Plant.

Input- 200 to 1500 VDC, 2A and Output – 24 VDC, 1.25 A

It Gives supplies to SMB card.

8 no. of DG’s can be connected in single device.

DG sense is required to know the DG ON/OFF status.
This is an additional hard signal to a controller.

Yes, we can calculate the loss of generation due to curtailment. But we want to require an on-site radiation sensor for reference of expected generation.

Suryalog Master-slave is available to show the centralized monitoring for distributed solar system.

Yes, we can connect multiple makes of inverters connect in a single SuryaLog device.

25% to 30% is a recommended spin reserve from DG manufacturers.

Yes, we can set/change a spin reserve. Spin reserve is needed to maintain for a long life of DG and to efficient fuel consumption.

Yes, By using Master-Sub-Master concept we can control DG’s at multiple locations.

1 sq.mm, 2 twisted pair, shielded/screened, RS 485 cable. If need to lay from barred ground need Armored.

All DG MFM are needed for controlling who gives reference voltage to Solar Inverters.

Suryalog is compatible with multiple makes. We recommended Schneider EM 6400NG, EM6436H, EM1220, secure Elite 445 onwards.

In SuryaLog device, MFM fail-safe condition is work for this type of condition. The device sends a fix command till the communication re-established.

Suryalog device having a advance setting for DG sync operation.

DG synch Panel is used to synch more than one DG’s. Sync Panel matching a voltage level and Frequency to both the DG as voltage, frequency, phase angle, phase sequence of all installed DG’s for smooth operation.

100ms is a response time of the controller.

Both devices are working separately for DG controlling and combined for Zero export controlling.

Class defines the accuracy of MFM. When we install extra MFM in series with existing MFM then use class 0.5, class 0.2 MFM.

Environmental testing -IEC 60068-2-2
Shock testing -IEC 60068-2-6
EMI/EMC -IEC 61326-1,
IEC 61000-6-4,
IEC 61000-4-3
ESD -IEC 61326-1
EFT/B -IEC 61326-1
EFT/B (on signal/control/port) -IEC 61326-1
Surge -IEC 61326-1
Cold test -IEC 60068-2-1
Change of temperature -IEC 60068-2-14
Vibration testing -IEC 60068-2-27
Damp heat cyclic -IEC 60068-2-30

These are the digital and analog signals which are used in Ground mount solar system.

Yes, we can use only soft signal for DG sensing.
Limitations
All DG needs individual MFM.

In rooftop we use DI signals for sensing the DG ON/OFF condition.
Potential free- No voltage between two points.

Hysteresis is a upper and lower limit of variation of Spin reserve percentage. By using hysteresis, we get smooth working of DG with solar.

We can trip the ACDB by using DO. If inverters not in communication and power reverse power is going on DG/Grid.
We can turn on Buzzer if any fault happens in plant.

If we have a spare SPD or accessories, then we can avoid and data loss problem due to unitability of accessories. We can replace the accessories and continue our communication within a hour. Otherwise we need to wait up to the replacement.

RPR is Reverse power relay use for turn off the ACDB when reverse power is sent on Grid/DG.
It is used in Grid or DG incomer.
We need to install CT on any one of the three phases. As reverse power is sensed, RPR turns off the Solar ACBD.

Yes, we can control the solar power with Gas Generator

As per the electrical rule at a time only one source is connected with common bus bar.

No. DG will trip due to Overload.

All types of Inverters, MFM and sensor in the market are compatible with the SuryaLog device.

Within the day we can add the new inverter and MFM file in device.

SuryaLog device having a system to show the wing wise data

8-16GB on-chip and 110 GB (Optional) internal memory is available in device.

Standard uploading frequency is 5 Min. (1/5/15/30 min is Optional)

At a time Possible to push 4 different servers through FTP, JSON, Rest API, MQTT.

Yes, Suryalog is a modular device we can upgrade it into 5G

By default is done as per minimum phase load, but we have a provision of Maximum phase load and Total load controlling.

Single Main incomer or equal to the no. of transformer Solar MFM is needed.

Suryalog is compatible with multiple makes. We recommended Schneider EM 6400NG, EM6436H, EM1220, secure Elite 445 onwards.

MFM is having a RS 485 communication, with Phase wise Voltage, Current, Power, PF, and total frequency, Active, Reactive, and Apparent energy.

By default, SSP control automatically. Dynamic means Changing, we need power changing when controlling any system (SSP changing as per requirement by SuryaLog system as per load). If we used static, then power not changing, it is stuck on same reading as per we set (SSP not changing).

A number of source meter addition using virtual summation directly from the advanced setting page. Virtual summation is used to add multiple source meters or solar meters. We can use the virtual summation option from the advanced settings page by enabling it.

There are 32 devices we can connect in a master-slave combination
But to avoid delay and loss of communication we recommended
For wired: -18 buildings we can monitor and 10 to 12 buildings we can control
For wireless: -12 to 14 buildings we can have monitored and 8 to 10 buildings we can control.

Yes, following conditions to be consider

1. Confirm the device at a time of Order closure.
2. Need communication and registration charges.
3. Need to check compatibility of device if no. of inverters and DG’s are increase.

Suryalogix provides Onsite or online support for installation and commissioning.
The Onsite charges are At Actual Extra.
Cable Laying, MFM installation, Permissions are in customer scope always.

Device is indoor type and having protection of IP-20
We also provide IP 65 enclosure for extra protection against environmental condition.

Light weight Li-ion UPS of 12V 2A SMPS will be provided for 2-4 hours power backup.

Earthing is compulsory for SPD and SuryaLog device. (because SPD earth the Surges, and all the metal devices are earth the static charge.

Yes, We can use inverter addition instead of ACDB MFM.
Reasons:

1. If ACDB is not available.
2. If ACDB MFM is faulty.

-20 to 70 degree Celsius is an operating temperature of device.

In SMA old Inverter all inverters is communicate with Inverter Manager card only.
And we need to take data from Manager card.

280*280*130 = 03 KG
380*280*130 = 05 KG
560*380*180 = 10 KG
800*600*300 = 20 KG
Note: Consider maximum weight

• HB LED = Device status and Internet connectivity.
• GSM LED = strength of signal and connectivity.
• Status LED = device status.

• Extra and Spare accessories
• SIM card Module
• Power supply specification in country
• Socket switch compatibility
• SMPS compatibility

32-64 DI (default) and 128 DI (optional) can connect to SuryaLog device with DI cards.

Suryalog enclosure required 25W power, Suryalog device required 3-5W power.

• Net meter is a Bidirectional Meter installed by government in which we will get Import and export values.
• If net meter is installed then we can transfer solar power into grid.
• The billing is calculated on Net units i.e. ( Import- Export)

Yes, Suryalog device having a provision to add multiple MFM.

Yes, Need to install the MFM on HT incomer.

Yes, the settable threshold can be set for Grid (ZED)

Yes, Suryalog device having a provision to communicate devices wirelessly.

1. Ethernet
2. GSM
3. Wi-Fi

As per RS485 communication technology 32 devices are connected in a single loop.
But, as per the observation, the data may be a loss if more inverters are connected in a single loop.

Yes, In Master slave combination it is possible.

Yes, we can use existing or new datalogger in TCP/IP communication

Yes, If MFM is communicate over Mod-scan and having a required parameters then we can use existing MFM for Grid, DG and Solar.

Kill switch is a feature for our customer to disable the device without end customer permission.

If load is fluctuating then controller cannot set stable SSP. There is chances of reverse power going on grid.
To protect it we have a following features:

1. Set able Grid Spin reserve.
2. Moving average
3. RP feedback logic.

Feedback logic is used to avoid Reverse Power in following condition:

1. Slow Inverter Response
2. Large number of Inverters in a loop
3. Sudden changes in Load.

• In feedback logic we take a feedback from solar MFM that power is generated as per SSP command or not.
• If yes then device send next command otherwise it wait for some time as we set in device.
• If radiation is low then device increments the SSP value till condition not satisfy.

Both MFM is preferred for ZED controlling

Yes, the SuryaLog Portal is having a feature of centralized and portfolio monitoring.

Yes, you can download in PNG, PDF and Excel format.

Yes.

All types of losses in solar system can be calculate and monitored.

We do addition of all active sources is the total load. By using MFM we check the generation and Consumption.

Yes, Suryalog portal having a facility of setting PR formula.

Yes.

Yes.

Remote monitoring is a check-in a data from remotely using internet and server.
Remote access is use for setting and configuration without going onsite.

In Grid DG statistic we have that provision to show and calculate Loss.

We can show the MPPT level data. Or we can connect the SMB card for monitoring.

The SLDCs shall be the Apex Body to ensure integrated operation of the power system in a State.
It schedules the dispatch of electricity in state.

WMS is a weather monitoring station which includes following components

1. Weather Pole
2. Weather logger
3. Sensors

HT panel is same as ACDB. It having MFM, Annunciator, VCB, Digital Inputs, Analog inputs (WTI, OTI)
It collects the HT output of transformer and send it to the Switch yard or MCR.
It also known as ICOG panel (if multiple incomers and one outgoing panel)

We can make the reports as per our requirement by using Customized report function

FileZilla is a software which is use to check the data of FTP.

Yes. Suryalog does have provision for Kiosk display.

IEC 61724 is a Photovoltaic System Performance Monitoring – Guidelines for measurement of data and analysis

In this Sub point monitoring related requirements are mentions.

In this Sub point Capacity evaluation method is mentioned for a short period.

In this Sub point Energy evaluation method is mentioned for a 1 yr. or Long period.

Yes, SuryaLog Portal having a facility to show different dashboard on multiple screens

Yes, we can create a customized dashboard for ground mount sites.

1 sq.mm, 2 twisted pair, shielded/screened, RS 485 cable.
If need to lay from barred ground need Armored.

Up to 200 meters we will gate proper communication after that depends on site condition communication matters.
If we follows RS 485 recommendation and laying cable properly, then we can communicate over more distance.
In ground mount plant we will gate proper communication over 600 Meters.

Yes, Possible with some protocol.

With obstacle: – 1.2KM
Without obstacle: – 2KM

If cable laying is not possible then we can use wireless with Lo-Ra and parabolic communication.

Yes, Controlling and Monitoring is possible.

Yes OFC is a just type of medium the communication protocol is Modbus TCP/IP.

Star network is not recommended by RS 485 protocols.

Theoretically it is 1200 Meters. But practically up to 600-800 Meters communication is getting.

Yes, Suryalog device having a facility of RS 485 communication.

No, it is not recommended by RS 485 Protocols.

To protect the Port of Device by a large surge. It saves the time of Replacement a device.

We can connect 12 Inverters in one loop for Datalogger and 8 Inverters in one loop for the Controlling site for better response.

Electrical EMF, Laying without protection, improper termination.

Spare RS 485 port is not compulsory but, it is a provision for future if following condition are happen

1. Solar system extension
2. Make and model is change /inverter is changed
3. Need to take separate loop of communication.
4. Need to send data from RS 485
5. Used RS 485 port is Damage.

Media converters, Patch cord, LIU box, Network switches.

Yes, we can do LoRa under 1.2 KM and Parabolic for 5KM distance.

CAT-6 cable is use of LAN, Ethernet, TCP/IP communication for up to 100 Meter distance.

Suryalog device is access by IP address so, it required static IP which is not change automatically, while Dynamic IP is change automatically.

The PLCC is a communication Method, by using this method we can send data from existing Power cable where no need to laying a Communication cable.

Limitations
Power line communication is limited by the existing electrical infrastructure where it is being employed and thus affects power line channel parameters such as power attenuation, noise, impedance, and bandwidth.

Up to 10 gbps, and it depends on the transmitting and receiving device.

A Shield is a covering over the twisted pair of cables. It protects the data signals from electrical noise interference.
A Shield is used to reduce electrical interference from the high voltage.
Armored is used to give Rigidity to cable. When we Underground laying cable.

1. Coaxial cable used for transmission lines for radio frequency and data signals.
2. They have traditionally been used as feed lines to connect radio transmissions and receivers with antennas.
3. Internet connection digital audio and cable television signals.

Modbus TCP/IP and Modbus RS 485 these two protocols are we use. And we can communicate with other types by using Converters.

Baud rate is a number of bits that transfer and receive in communication.
It effect on communication for long distance communication we are use 9600 and for short distance communication we use 19200.

Yes, by using Pen drive we can extract or we can download from settings.

Termination register is used to know the end of communication loop. Need to Turn ON it at last Inverter.

Need repeater to extend RS 485 communication limit.

No, we cannot connect multiple masters to slave in MODBUS RTU. But, with MODBUS TCP
you can connect multiple masters.

We can connect 255 devices in TCP/IP communication.

Static IP
Gateway
subnet Mask
DNS
all the IP must have firewall free.

01= Coil status: – (It’s 1 bit and Read/ write operation)
02= Input Status: – (It’s 1 bit and only Read operation)
03= Holding Register: – (It’s 16-bit and Read/write operation)
04= Input Register: – (It’s 16 bit and only Read )

Digital sensors are best for communication and Accuracy.

Yes, the Device will store it in memory and Upload to server after reconnect the Internet.

RS 485, TCP/IP, Wireless, PLCC, OFC. Are the common technologies that we are used.

No, the PLCC converters does not support HT voltage level.

For LoRa up to 2 KM (LOS), 1.2 KM (with Obstacles) and For Parabolic 5 KM (LOS)

Multimode: can be transfer multiple signals from core
Single mode: Can transfer only one signal from core.

Wireless Slave, Transceivers, Antennas, and Master. Extension cables

OFC patch cords are use in between LIU box and Media converters.

Mobile towers Jam the nearby other frequencies.

M2M sim card is use only for internet. We need to allow SuryaLog sites when we use it.
To allow it contact with customer care.

Yes, need to update the software if software is mismatched.

No.

Need to change the communication or change the MFM.

At least 12 Inches are recommended.

If cable is laying from bearded ground or in ground mount project. Then we prefer armored cable?
If gives rigidity to the cable. Quality of data is independent with armor.

Sun Spec Modbus is an open communication standard that specifies common parameters and settings for monitoring and controlling Distributed Energy Resource (DER) systems.

DNP3 is an extended version of Ethernet communication. This is not most commonly used in monitoring.
It communicates only when slave changes value/status.
The improved bandwidth efficiency is accomplished through event-oriented data reporting. The Remote Terminal Unit monitors data points and generates events when it determines that the data should be reported (for example, when it changes value).

IEC 104 is a extended version of Ethernet communication. This is not most commonly use in monitoring and sending a data with security.
It having some standard protocols and rules for sending data.

Gateway is a device use to convert data from RS 485 to TCP/IP.
The addresses and ID of device is same as per the set in devices.

We can use Parabolic antenna if wireless LoRa is not suitable for site.

Distance – can be work up to 5 KM.
Speed- in mbps
Losses and Noise interference- Low as compare to LoRa
Obstacles like Mobile tower: No effect of Mobile tower but Obstacles like Building may affect.

Flexible power cable or flexible sense cable is used for taking Aux. power supply or DG sense signal. It having multiple core for that it get flexibility and long life.

OFC patch cord delivers the light signal while LAN patch cord delivers the electrical signal.