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Delta Electronics DPM-C520 [11/46] Wiring diagrams
![Delta Electronics DPM-C520 [11/46] Wiring diagrams](/views2/1478742/page11/bgb.png)
10
5.1 Wiring on the Back
This chapter illustrates how the wiring on the back is done.
Note:
■
To avoid electric shock, do not alter wiring when the power is on.
■
As there is no power switch on the power meter, be sure to install a breaker switch on the power
cord for the meter.
Recommended wiring materials are shown below:
Connecting Terminals Wire Diameters Screw Turning Torque
Functional Power AWG 10 ~ 24 7.14 kgf - cm (0.7 N*m)
Measured Voltage AWG 10 ~ 26 7.14 kgf - cm (0.7 N*m)
Measured Current AWG 14 ~ 22 8.0 kgf - cm (0.79 N*m)
RS - 485 AWG 14 ~ 28 2.04 kgf - cm (0.2 N*m)
RTwisted pair cables must be used in cabling for RS485 communication. When connecting multiple
devices in series, the wiring method is displayed in the diagram below.
The D+ communication terminal for all devices should be connected on the same twisted pair cable. The
D - terminals should be connected on the other twisted pair cable. The insulation net is grounded. The
device on the end terminal needs to have terminal resistor (100~120Ω，0.25W) installed on it.
Wiring Diagrams
Terminal Resistor
Содержание
- Table of contents 2
- Preface 3
- Always be aware of the following safety notes when installing wiring operating maintaining and 4
- Checking the device 4
- Maintenance and check 4
- Methods of wiring 4
- Note on wiring 4
- Notes on installation 4
- Notes on operation 4
- Safety notes 4
- Wiring for communication circuits 4
- Installation environment 5
- Descriptions 6
- Descriptions of parts 6
- Exterior and dimensions 6
- Operating interface 6
- Product name tag 6
- Apparatuses or devices without permission 7
- Basis for the manufacture or sell of shall not be reproduced or used as the 7
- Control power 7
- Description 7
- Design drawn 7
- Df mea3h 1r01slddrt 7
- Dimensional tolerances 7
- Function pin voltage current 7
- Holes 0 5 angles 0 7
- Issue date 7
- L1 80 265 7
- Ma max l2 7
- Measured current 7
- Measured votage 7
- Part no 7
- Property of delta electronics inc and these drawings and specifications are the 7
- Rs 485 7
- Sheet of 7
- Used on 7
- V l n 400v l n 35v l l 690v l l v2 7
- Installation 8
- Installation method 8
- Dimensions of panel hole 9
- Unit mm inches 9
- Basic checks 10
- Wiring diagrams 11
- Wiring on the back 11
- Descriptions of wiring 12
- Diagram 5 1 one phase two wire 1 ct diagram 5 2 one phase three wire 2 ct 12
- Diagram 5 3 three phase three wire 12
- Diagram 5 4 three phase three wire 12
- Measured current measured current 12
- Measured voltage measured voltage 12
- Supported methods of wiring supported methods of wiring 12
- The device use of an external current transformer should be considered 12
- The device use of an external potential transformer should be considered 12
- This chapter illustrates how wiring is done for this panel 12
- When measured current is higher than the rated specifi cation refer to electrical specifi cation 9 for 12
- When measured voltage is higher than the rated specifi cation refer to electrical specifi cation 9 for 12
- Δ delta connection 2 ct no pt 12
- Δ delta connection 3 ct no pt 12
- The following symbols are used in the diagram 13
- Descriptions 14
- Panel display 14
- Panel display and settings 14
- Amp unb 15
- Menu tree 15
- Pf dpf 15
- Ph ph qh qh sh sh 15
- Pqs p q s 15
- Tim dat com sys ct pt rst info 15
- Tot amp vln vll 15
- Vln vll i pf pwr hz 15
- Vln vll uln ull 15
- General operations 16
- Setup operations 17
- Overview of parameters 23
- Parameters and functions 23
- Abnormal situations the power meter records the type and time of the alarm occurred in the register 38
- Based on start stop status for the 10 types of alarm settings address location 0x1f 0xb7 under 38
- Below informing the reason why the main station experienced abnormal situation 38
- Location 0x400 0x483 the types of alarms and their descriptions are as follows 38
- Messages of abnormal operations 38
- Under abnormal communications the power meter can send out messages via modbus codes shown 38
- Specifications 39
- Baud rate 9600 19200 38400 40
- Communication protocols modbus rtu 40
- Communication specifications 40
- Data bit 8 40
- Functional code 03 06 10 40
- Max distance of communication 1200 m 40
- Max number of connected stations 32 40
- Parity none odd even 40
- Stop bit 1 40
- 1 modbus rtu mode is adopted with modbus master sending out the request in which the function 41
- Are shown in the example below 41
- Code uses 0x03 to request response from slave to correspond to values in modbus address in 41
- Format of modbus communication 41
- Function code modbus name description 41
- High byte low byte high byte low byte 41
- Low word high word 41
- Master 41
- Modbus communication 41
- Modbus communication protocols 41
- Packet format of ieee754 is used for the address of floating point numbers that corresponds to the 41
- Register values found in table 7 using 2 s complement packet format the format are as follows 41
- Request 41
- Response 41
- Response modbus slave responds to the values of modbus address in the master request the 41
- The packet formats for the address of integers that corresponds to the register values found in table 7 41
- X03 read holding registers read the contents of read location 41
- X06 write single holding registers preset the contents of written location 41
- X10 write multiple holding registers preset the contents of written location 41
- Ct setting register address 0x000e on the power meter modbus slave slave address 0x1 the 42
- Example 42
- For modbus master such as plc or data collector it uses modbus protocol to get the value of 42
- Master request 42
- Register value is 1000 42
- Slave response 42
- The packet format for request sent out by modbus master plc or data collector is as follows 42
- The packet format for response responded by modbus slave power meter is as follows 42
- After receiving response from the power meter modbus master acquires the value of currents from the primary side current transformer register address 0x000e which is 1000 43
- Should modbus slave power meter receive an abnormal request the format of the abnormal packet responded is as follows refer to chapter 9 for the abnormal codes 43
- Slave response 43
- Appendix 44
- Appendix 1 selecting accessories 44
- Current transformer 44
- For the current transformer the model with a closer maximal current on the primary side should be select ed according to the maximal current actually input for example when the maximal current input is 700 a dct s261c can be selected 44
- Notes on selecting a current transformer 44
- Should input current exceed rated current tolerated by the meter 44
- Specifications the power meter needs to be used together with a current 44
- Transformer ct users can select a suitable ct according to the table below 44
- Wire over length on the secondary side of the current transformer causes decrease in accuracy 44
- Appendix 2 abbreviations 45
- Americas 46
- Europe 46
- Industrial automation headquarters 46
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