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8. Modbus Data Register *

*- Applicable for DPM380 only

Read Only (Function 0x03 or 0x04)

0-1

Reserved

2-3

Device Type

4-5

Version

Read Only (Function 0x03 or 0x04)

1000

Device ID

1-255

1001

Parity

1 = none

2 = even 3 = odd

1002

Baudrate

1 = 2400 2 = 4800

3 = 9600 4 = 19200

5 = 38400

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Summary of Contents for DPM380

Page 1: ...gital Power Meter User Manual DPM380 DPM380B No 3 Jalan Anggerik Mokara 31 48 Seksyen 31 Kota Kemuning 40460 Shah Alam Selangor Malaysia Website www itmikro com Tel 603 5525 3863 Fax 603 5525 3873 v1...

Page 2: ...ird party suppliers and shall be used solely in connection with the product BEFORE YOU BEGIN Apply appropriate personal protective equipment and follow safe electrical work practices NEVER work alone...

Page 3: ...6 5 Setup communication configuration 6 6 Demand setting 6 7 System setting 6 8 Reset all energy register 6 9 Reset demand register 6 10 Reset maximum minimum value 6 11 Remote set 6 12 Scroll settin...

Page 4: ...out 3 3 phase 4 wire system with 4 CTs 4 3 phase 4 wire system with 3 CTs 5 3 phase 3 wire with 3CTs and 3VTs 6 3 phase 3 wire with 2CTs and 3VTs 7 Menu map for the normal mode 8 Flow map for the pro...

Page 5: ...Voltage and current total harmonic distortion THD Demand and maximum demand for total active reactive and apparent power Maximum and minimum phase and line voltage Maximum and minimum phase and neutr...

Page 6: ...No Part Description 1 Current inputs Current metering connections 2 RS485 port The RS485 port is used for communications with remote monitoring and control system 3 Power supply input Connection to po...

Page 7: ...onnect the metering voltage input current input communication and auxiliary according to the wiring schemes shown in Section 2 3 Figure 3 to 6 on the next page d The recommended wire size is as below...

Page 8: ...G 19 20 1 2 3 4 5 6 7 8 15 16 17 18 14 13 12 Figure 4 3 Phase 4 Wire System with 3CTs connection direct voltage input 19 20 1 2 3 4 5 6 7 8 15 16 17 18 14 13 12 NOTE Neutral current measurement is bas...

Page 9: ...hase 3 wire with 3CTs and 3VTs connection Figure 6 3 phase 3 wire with 2CTs and 3VTs connection 19 20 1 2 3 4 5 6 7 8 15 16 17 18 14 13 12 NOTE I2 current measurement is based on the vector sum of 2 C...

Page 10: ...setting Remote Set Scroll mode setting and delay time Backlight setting The flow maps for the meter is under Section 5 It is guideline for the user to flip to the desire window whether in normal mode...

Page 11: ...V Max Phase Voltage V Power factor PF Frequency Hz True Power factor PF Displacement Power Factor DPF Total Power W VAR VA Min Real Power W Min Total Power W VAR VA Demand W VAR VA Max Demand W VAR V...

Page 12: ...ing Toscroll display in idle mode ON OFF Demand Setting Reset Max Min Reset Yes No System Setting Scroll Delay Time Toset interval time for scroll display 1 10secs Reset Hour On Register Reset Yes No...

Page 13: ...mming mode The first number will blink to enter password b Use the UP or DOWN button to change display value and the NEXT button to shift to next number c Press the PROG button to confirm and enter pr...

Page 14: ...tings if change is made Refer Section 6 16 NOTE CT Ratio default value is 5 5A NOTE PT Ratio default value is 100 100V a Scroll in programming mode until Pt is displayed using the UP or DOWN button b...

Page 15: ...setting is measured value 6 5 SETUP COMMUNICATION CONFIGURATIONS a Scroll until ID BRATE PARITY is displayed using the UP or DOWN button b Press the NEXT button The PROG and symbol next to ID will bli...

Page 16: ...ll be prompted to confirm the saving of settings if change is made Refer Section 6 16 a Scroll in programming mode until SYSt sEt is displayed using the UP or the DOWN button b Press the NEXT button T...

Page 17: ...mpted to confirm the saving of settings if change is made Refer Section 6 16 6 8 RESET ALL ENERGY REGISTER a Scroll in programming mode until dMd rSt is displayed using the UP or the DOWN button b Pre...

Page 18: ...Section 6 16 a Scroll until rMt SEt is displayed using the UP or the DOWN button b Press the NEXT button The PROG symbol will blink Use the UP or DOWN button to toggle Enable on or disable oFF symbols...

Page 19: ...ll be prompted to confirm the saving of settings if change is made Refer Section 6 16 6 12 SCROLL SETTING NOTE Scroll setting default value is oFF a Scroll in programming mode until Scrl dELY is displ...

Page 20: ...ion is to turn off backlight after 10 minutes idle c Press the NEXT button The PROG symbol will blink Use the UP or DOWN button to toggle oFF or on symbols d Press the NEXT button to confirm the new s...

Page 21: ...M PROGRAMMING MODE a Press the NEXT and PROG buttons simultaneously until the password ID request window is displayed Key in the current password Refer to Section 6 1 on how to do this 6 18 SETUP THE...

Page 22: ...100 33kV PT Secondary no PT 100 250V Secondary Phase Voltage 20 300VAC Accuracy 0 5 Power kW kVAR kVA measurement Display each phase total Accuracy 1 Power factor measurement Display each phase total...

Page 23: ...10 C 55 C Storage Temperature 20 C 70 C Operating time on hour Up to 9999 days 23 hours 59 minutes Mechanical Characteristic Dimension Case L96mm x W96mm x H87 5mm Mounting type Panel LCD view area 7...

Page 24: ...endian convention shall apply unless otherwise specified Tables 6 and 7 show the read only variables function code 0x03 or 0x04 for device communication info operations power factor and harmonics data...

Page 25: ...0 01Hz 45 00 65 00 4020 4021 Instantaneous Current L1 dword 0 001A 0 999 9kA 4022 4023 Instantaneous Current L2 dword 0 001A 0 999 9kA 4024 4025 Instantaneous Current L3 dword 0 001A 0 999 9kA 4026 4...

Page 26: ...4066 4067 Max Total Demand Real Power int 1W 2000M 2000M 4068 4069 Reserved 4070 4071 Total Demand Apparent Power dword 1VA 0 2000M 4072 4073 Max Total Demand Apparent Power dword 1VA 0 2000M 4074 40...

Page 27: ...000 4092 Sign Power Factor L2 word 0 Resistive 1 ind 2 cap 4093 Power Factor L3 word 0 001 0 1 000 4094 Sign Power Factor L3 word 0 Resistive 1 ind 2 cap 4095 Sign Total Power Factor word 0 Resistive...

Page 28: ...al Real Power Max int 1W 2000M 2000M 4138 4139 Reserved 4140 4141 Total Apparent Power Max dword 1VA 0 2000M 4142 4143 Reserved 4144 4145 Total Reactive Power Max int 1VAR 2000M 2000M 4146 4147 Reserv...

Page 29: ...n dword 0 001A 0 999 9kA 4186 4187 Reserved 4188 4189 Current L2 Min dword 0 001A 0 999 9kA 4190 4191 Reserved 4192 4193 Current L3 Min dword 0 001A 0 999 9kA 4194 4195 Reserved 4196 4197 Current Ln M...

Page 30: ...000M 4234 4235 Reserved 4236 4237 Real Power Min L1 int 1W 2000M 2000M 4238 4239 Reserved 4240 4241 Real Power Min L2 int 1W 2000M 2000M 4222 4223 Reserved 4224 4225 Total Real Power Min int 1W 2000M...

Page 31: ...000M 4250 4251 Reserved 4252 4253 Apparent Power Min L2 dword 1VA 0 2000M 4254 4255 Reserved 4256 4257 Apparent Power Min L3 dword 1VA 0 2000M 4258 4259 Reserved 4260 4261 Reactive Power Min L1 int 1V...

Page 32: ...l Demand 1 120 106 System Configuration 0 3P4W 1 3P3W 107 Backlight setting 0 OFF 1 ON 108 Scroll interval 1 10 secs 109 System scroll setting 0 OFF 1 ON 110 Neutral setting 0 OFF 1 Measured 2 Calcula...

Page 33: ...the warranty 9 Maintenance and Troubleshooting NOTE We reserve the right to alter or modify the information contained herein at any time in line with our product development without prior notificatio...

Page 34: ...ETTING Interval time 180 seconds sub interval 3 Measurement interval time sub interval 180 3 60 seconds a 4000 4001 Negative Real Energy Address 4000 Address 4001 MSB LSB MSB LSB 0x00 0x01 0x23 0x34 N...

Page 35: ...A C Current Line 3 A Example Given L1 is 3A L2 is 6A L3 is 8A Substitute into formula 3 2 6 2 8 2 2 x 8 3 x 8 6 x 8 4 359 A 11 3 NEUTRAL CURRENT CALCULATION 12 Version History Version Description 1 0...

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