SPM-D05 / SPM-D05E / SPM-D10 / SPM-D10E — DIN-rail 5-/10-circuit Modbus Smart Power Meter

Descripción

Enabling ESG-driven Smart Energy Management As ESG and sustainability initiatives become increasingly important, enterprises, industrial facilities and public infrastructure require greater visibility into energy consumption and operational efficiency. Accurate power monitoring provides the essential data foundation for smarter energy management, helping organizations optimize energy use and support measurable sustainability goals. In response to the trend and customer needs, PLANET announces a series of Smart Power Meter for smarter energy management and long-term ESG initiatives. High-density Multi-circuit Power Monitoring The PLANET SPM-D05/D10 Series is a line of DIN-rail multi-circuit power meters designed for centralized monitoring of multiple electrical circuits. The series consists of four models: the 5-circuit SPM-D05 and SPM-D05E , and the 10-circuit SPM-D10 and SPM-D10E . By integrating electrical measurement, power-quality analysis, data logging and Modbus communication into a compact unit, the series helps reduce installation space, wiring complexity and deployment costs in energy management applications. Flexible 5-circuit and 10-circuit Configurations The SPM-D05 and SPM-D05E provide a 5-circuit configuration suitable for smaller distribution panels and applications with fewer monitored loads. The SPM-D10 and SPM-D10E provide a 10-circuit configuration with two independent main circuits and up to 24 single-phase branch circuits or 8 three-phase branch circuits . Their upper and lower current input groups are electrically isolated, allowing two independent power systems to be monitored by a single meter. Product Type Circuit Type Model Current Sensor Input Power Supply Primary Communication Secondary Communication Option DIN-rail Power Meter 5-circuit SPM-D05 RC/mV 0~333 mV AC 85~264 V / DC 100~300 V RS-485 Modbus RTU N/A SPM-D05E Ethernet Modbus TCP 10-circuit SPM-D10 N/A SPM-D10E Ethernet Modbus TCP Flexible Wiring for Various Power Systems Each group of three current inputs can be configured for 1P2W , 1P3W , 3P3W or 3P4W systems according to the connected load. When a branch circuit is configured for single-phase measurement, each current input can be assigned to the corresponding voltage phase. This flexible configuration supports mixed single-phase and three-phase loads and simplifies load-balancing arrangements in different power distribution environments. High-accuracy True RMS Measurement With True RMS measurement and a sampling rate of 256 points per cycle , the SPM-D05/D10 Series delivers reliable measurements across a wide range of electrical loads. It provides 0.2% voltage and current accuracy and Class 0.5S active and reactive energy accuracy , making it suitable for energy monitoring, electricity cost allocation and power-quality management. RS-485 and Ethernet Connectivity All models are equipped with an RS-485 interface supporting Modbus RTU . The SPM-D05E and SPM-D10E additionally provide an Ethernet interface supporting Modbus TCP for integration into IP-based monitoring networks. The SPM-D05 and SPM-D10 are designed for standard RS-485 deployments without Ethernet connectivity. Comprehensive Energy and Power-quality Measurement The SPM-D05/D10 Series provides comprehensive measurement of voltage, current, frequency, active power, reactive power, apparent power, power factor, and active, reactive and apparent energy. It also supports voltage and current total harmonic distortion (THD), 2nd- to 31st-order harmonic measurement , three-phase unbalance, demand calculation, and maximum and minimum value recording, enabling detailed analysis of energy consumption and power quality. Built-in Data Logging and Time-of-use Management The SPM-D05/D10 Series incorporates 2MB Flash memory for local data logging without battery-life limitations. It can record selected measurement parameters at configurable intervals for historical energy analysis. Time-of-Use (TOU) functionality supports up to 4 time zones , 8 time periods and 4 tariff rates , enabling electricity consumption and demand to be tracked according to different billing periods. Integrated I/O for Alarm and Control The SPM-D05/D10 Series is equipped with 2 digital inputs , 4 relay outputs and 1 pulse output . The relay outputs can be configured for alarm or digital output operation, enabling the meter to respond to specified electrical conditions and work with external alarm, monitoring and control equipment. Compact Design for Industrial Environments Featuring a compact enclosure and standard 35mm DIN-rail mounting , the SPM-D05/D10 Series can be easily installed in electrical distribution panels. When paired with split-core current transformers, it is well suited for retrofit projects where installation space and system downtime are limited. Its built-in 128 × 64 dot-matrix LCD provides an intuitive interface for on-site measurement viewing and parameter configuration. Applications Modbus-based Building Energy Management The multi-circuit power meter can be connected to a Modbus gateway through RS-485 Modbus RTU, allowing its electrical data to be converted into Modbus TCP for transmission over an Ethernet network. An EMS or BMS can centrally monitor voltage, current, power, energy consumption and power quality across multiple circuits. This architecture is suitable for commercial buildings, rental facilities and distribution panels requiring centralized energy analysis, electricity cost allocation and load management. Remote Power Monitoring for Distributed Industrial Sites For factories and geographically distributed facilities, the multi-circuit power meter can be connected to a serial device server to extend RS-485 communication across an IP network. Measurement data from remote electrical panels can be delivered to a central control room or IIoT platform for real-time equipment load monitoring, historical analysis and abnormal power-condition detection. This solution enables existing serial power meters to be remotely accessed without replacing field equipment, simplifying industrial energy monitoring across multiple locations. Key Features Highlights 5-circuit SPM-D05/SPM-D05E and 10-circuit SPM-D10/SPM-D10E models Compact multi-circuit power monitoring for centralized energy management True RMS measurement with 256-point-per-cycle sampling 0.2% voltage and current measurement accuracy Class 0.5S active and reactive energy accuracy RS-485 Modbus RTU communication on all models Ethernet Modbus TCP support on SPM-D05E and SPM-D10E Built-in 2MB Flash memory for data logging Time-of-Use management with multiple time zones and tariff rates Multi-circuit Measurement 5-circuit and 10-circuit configurations for different monitoring scales Two independent main circuits on SPM-D10 and SPM-D10E Supports up to 24 single-phase or 8 three-phase branch circuits on the 10-circuit models Electrically isolated upper and lower current input groups on the 10-circuit models Suitable for monitoring two independent power systems Supports mixed single-phase and three-phase load monitoring Compatible with split-core current transformers for retrofit installation Electrical Measurement Voltage Current Frequency Active power Reactive power Apparent power Power factor Active energy Reactive energy Apparent energy Current and power demand Maximum and minimum value recording Power-quality Analysis Voltage and current total harmonic distortion (THD) 2nd to 31st individual harmonic measurement Odd and even harmonic analysis Three-phase voltage and current unbalance measurement True RMS measurement Sampling rate of 256 points per cycle Voltage measurement accuracy of 0.2% Current measurement accuracy of 0.2% Active and reactive energy accuracy compliant with Class 0.5S Flexible Wiring Systems Supports 1P2W single-phase two-wire systems Supports 1P3W single-phase three-wire systems Supports 3P3W three-phase three-wire systems Supports 3P4W three-phase four-wire systems Configurable circuit wiring for balanced and unbalanced loads Individual voltage-phase assignment for single-phase branch circuits Configurable PT and CT ratios for different electrical systems Communication One RS-485 communication interface on all models Modbus RTU protocol Device address range from 1 to 247 Communication speeds from 1200bps to 115200bps Configurable parity and stop bits Maximum RS-485 transmission distance of 1200 meters Ethernet interface on SPM-D05E and SPM-D10E Modbus TCP protocol on Ethernet models Supports integration with EMS, BMS, SCADA and industrial control systems Data Logging and Time-of-Use Management Built-in 2MB Flash memory Configurable data logging intervals Records selected measurement parameters with date and time Up to 86 selectable logging parameters Cyclic recording when the storage capacity is reached Supports up to 4 time zones Supports up to 8 time periods Supports 4 tariff rates Special-day and weekend schedule settings Monthly or user-defined electricity settlement date Demand recording according to tariff period Digital Input and Output 2 digital inputs Digital inputs configurable for general input or data-reset functions 4 SPST relay outputs Relay outputs configurable for alarm or digital output operation Up to 12 alarm conditions configurable for each relay High, low, high-hold and low-hold relay operating modes 1 open-collector pulse output Pulse output assignable to active or reactive energy Maximum pulse output frequency of 40Hz Display and Operation 128 × 64 dot-matrix LCD White LCD backlight Displays up to five electrical parameters simultaneously On-site measurement viewing and parameter configuration Configurable default monitoring screen Password protection against unauthorized configuration changes Built-in date and time display Operating-hour and running-hour counters Installation and Environment Compact DIN-rail design Standard 35mm DIN-rail mounting compliant with EN50022 IP20-rated enclosure CAT II measurement environment Operating temperature range of 0 to 60 degrees C Storage temperature range of -10 to 70 degrees C Relative humidity range of 5% to 95%, non-condensing Maximum operating altitude of 2,000 meters AC 85–264V or DC 100–300V power input

Especificaciones técnicas

Circuit Configuration

SPM-D05 / SPM-D05E: 5 circuits SPM-D10 / SPM-D10E: 10 circuits

Main Circuit

SPM-D05 / SPM-D05E: 1 independent main circuit SPM-D10 / SPM-D10E: 2 independent main circuit

Branch Circuit Input

SPM-D05 / SPM-D05E: Up to 12 single-phase or 4 three-phase branch circuits SPM-D10 / SPM-D10E: Up to 24 single-phase or 8 three-phase branch circuits

Current Input Group Isolation

SPM-D05 / SPM-D05E: — SPM-D10 / SPM-D10E: Upper and lower current input groups electrically isolated

LED Indicators

SPM-D05: Power, COM1, Data Logging and TOU SPM-D05E: Power, COM1, COM2, Data Logging and TOU SPM-D10: Power, COM1, Data Logging and TOU SPM-D10E: Power, COM1, COM2, Data Logging and TOU

Display Panel

128 × 64 dot-matrix LCD with white backlight

Display Refresh Rate

0.5 second

Power Parameters Display

Up to 5 power parameters on one page

Date and Time

Perpetual calendar with year, month, day, hour, minute and second

Loading Type

IND or CAP loading type

Installation

35mm DIN-rail mount (EN50022)

Power Requirements

85~264V AC, 50/60Hz or 100~300V DC

Power Consumption

AC: 15VA maximum DC: 5W maximum

Dimensions (W x D x H)

199 x 118 x 77 mm

Weight

685g

Enclosure

Flame-retardant black ABS

Measurement

True RMS measurement

Sample Rate

256 points per cycle

Power System

1P2W, 1P3W, 3P3W or 3P4W

Load System

Balanced or unbalanced load

Voltage Input Range

20~400V AC, L-N 35~690V AC, L-L

Frequency Range

45~65Hz

Main Circuit Current Input

333mV CT input

Branch Circuit Current Input

333mV CT input

CT Primary Ratio

5~9999A

CT Secondary Ratio

333mV

PT Primary Ratio

100V~9999kV

PT Secondary Ratio

50~600V

Overload Capacity

2 times rated current continuously, 20 times rated current for 1 second

Measurement Category

CAT II

Total Harmonic Distortion

THD of voltage and current based on True RMS and fundamental values

Individual Harmonic

2nd to 31st individual harmonics of voltage and current

Harmonic Content

Odd and even harmonic content

Unbalance

Three-phase voltage and current unbalance

Calculation Method

Fixed block or sliding block

Period

1~60 minutes

Demand Parameters

Current, active power, reactive power and apparent power demand

Demand Record

Maximum demand value and time stamp

Max./Min. Values

Maximum and minimum parameter values with time stamps

RS-485 Interface

1

Protocol

Modbus RTU

Device Address

1~247

Baud Rate

Up to 115200bps

Response Time

Less than 50ms between completion of command reception and start of data transmission

Data Bits

8 bits

Parity

None, Even or Odd

Stop Bits

1 or 2

Distance

1200m

Maximum Connected Devices

32

Ethernet Interface

SPM-D05: — SPM-D05E: 10/100BASE-TX RJ45 SPM-D10: — SPM-D10E: 10/100BASE-TX RJ45

Ethernet Protocol

SPM-D05: — SPM-D05E: Modbus TCP SPM-D10: — SPM-D10E: Modbus TCP

TCP Socket

SPM-D05: — SPM-D05E: Up to 4 sockets SPM-D10: — SPM-D10E: Up to 4 sockets

Address Configuration

SPM-D05: — SPM-D05E: DHCP or static IP address SPM-D10: — SPM-D10E: DHCP or static IP address

Memory Storage

2MB Flash ROM without battery-life limitations

Log Setting

Selected measurement parameters can be recorded at configurable intervals

Interval Time

1~32767 seconds, minutes, hours or days

Date and Time

Year, month, day, hour, minute and second

Storage Method

Cyclic recording when storage capacity is reached

Recording Capacity

Approximately 40,300 records or 28 days when recording ten 4-byte data points every minute

Data Access

Data logs are configured and read through communication

Time Zones

1~4 zones per year

Schedules

Up to 8

Periods

Up to 8

Tariffs

Sharp, Peak, Valley and Normal

Parameters in TOU

Import active energy, import reactive energy, total apparent energy, current demand and power demand

Holiday Setting

Holiday dates and schedules configurable for up to five years

Weekend Schedule

Saturday and Sunday

Settlement

Monthly or user-defined settlement date

Input Capacity

2 digital inputs

Input Type

Mechanical contact or open-collector input

Function Mode

DI, Demand Reset, Maximum Demand Reset, Energy Reset, Maximum/Minimum Reset or Relay Reset

Trigger State

ON or OFF

Relay Capacity

4 SPST normally open contacts

Relay Contact Rating

5A at 250V AC; 5A at 30V DC

Function Mode

Alarm or digital output

Action Mode

Action Mode High, Low, High Hold or Low Hold

Alarm Set Points

Up to 12 alarm-condition groups per relay

Output Capacity

Open collector, 30V DC and 30mA maximum

Corresponding Item

Active or reactive energy of a selected circuit

Output Frequency

40Hz maximum

Test Pulse Output

3200 pulses/kWh, 50% duty cycle

Operating Temperature

0–60 degrees C

Storage Temperature

-10–70 degrees C

Humidity Rating

5~95%, non-condensing

Temperature Coefficient

100ppm/degree C or less

Operating Altitude

2,000m above sea level

Protection Rating

IP20

Measurement Accuracy

IEC 61557-12:2018 / AMD1:2021

Active Energy

Class 0.5S, IEC 62053-22:2020

Reactive Energy

Class 0.5S, IEC 62053-24:2020

Isolation

2.5kV AC, 50/60Hz for 1 minute between power, input, output and enclosure

Surge

±4kV AC, 1.2/50μs, applied to voltage input and power input

Insulation Resistance

≥100MΩ at 500V DC

EMC

EN 61326-1:2013 EN 55011:2016 EN 61000-3-2:2014 EN 61000-3-3:2013 IEC 61000-4-2:2008 IEC 61000-4-3:2006+A1:2007+A2:2010 IEC 61000-4-4:2012 IEC 61000-4-5:2014+A1:2017 IEC 61000-4-6:2013/COR1:2015 IEC 61000-4-8:2009 IEC 61000-4-11:2004/A1:2017

Safety (LVD)

EN 61010-1:2010+A1:2019

FCC

FCC 47 CFR Part 15, Subpart B, Class A