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Acrel DJSF1352-Rn DC power meter for EV charging

category： Power Meters

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Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Ms. Li
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Product details Company introduction
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Product Description
1 Overview
DJSF1352-RN rail-mounted DC power meter with double DC input channels, designed for telecommunications base stations, DC charging piles, solar photovoltaic and other applications, this series of meters can measure the voltage, current, power and forward and reverse energy and so on in the DC system.The actual use of the site, you can measure the total power, but also measure the energy within a specified period of time. The test results can be used for local display, but also with industrial control equipment, computers to form a measurement and control system.
The meter can have infrared communication interface and RS-485 communication interface, and supports Modbus-RTU protocol and DLT645-97 (07) protocol at the same time.The meter can have relay alarm output and digital input function;You can set the ratio, alarm, and communication through the meter panel keys according to different requirements.The meter can have event recording of switch (Modbus protocol), programming and event setting records (645 protocol), instantaneous and timing freeze function of data (645 protocol), maximum and minimum value recording function of voltage and current power.
 
2 Product specification
 
3 Technical parameters
Maximum power = rated voltage * voltage ratio * current ratio * 1.2
 
4 Installation guide
 
4.1.2 Product installation
The meter is designed by standard DIN35mm rail mounted.
 
4.2 Terminals and wiring
Note: The second DC input channel and DI and DO functions are optional.
When the current input mode is current shunt input:
Note: 1. When current shunt is connected to the negative, set the option to on in the meter menu, see section 6 menu programming interface for details.
2. When the two current inputs are input by the Hall current sensor, the power supply of the second Hall current sensor cannot be used with the built-in power supply of the meter, and the power module needs to be externally
connected.
3. When the current is input by the shunt, the voltage value measured by the four-wire method has an error of about one thousandth.
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FAQ

 

Analysis of common faults and causes

The measurement of the device is not accurate

Check whether the positive and negative terminals of the voltage are correct

Is the current passing through the hall sensor in the right direction

Check whether the IE setting of the device is consistent with the hall sensor used

Whether the output signal of hall sensor matches the required input signal of the device;

Check whether the output negative pole of the voltage output hall sensor is connected to the device GND 

Abnormal communication

Check whether the communication cable is connected normally

Check whether the A and B terminals of communication are staggered

Check whether the device address is set correctly and the communication baud rate is set correctly

Multi - device communication is not normal, first try the single communication, to see if it is normal.

The device does not display properly

Check whether it is caused by the insufficient carrying capacity of the built-in power supply to the hall sensor. Replace the external switching power supply to power hall