Schneider Electric PowerLogic PM5300

Compatibility

Compatible with EpiSensor Edge over Modbus RTU, Modbus TCP or BACnet/IP

Schneider documents Modbus RTU on the RS-485 port of the PM5310, PM5330 and PM5331, and Modbus TCP and BACnet/IP on the Ethernet port of the PM5320, PM5340 and PM5341. Its PM51xx/PM53xx register list gives register numbers, sizes, data types, units and a product ID for every model.

PM5310, PM5320, PM5330, PM5331, PM5340 and PM5341 with the PM51xx/PM53xx register list v2038_v2066_R01, supplied with firmware package 2.2.4 for hardware B1. Site check: read the product ID at register 90, then compare frequency and one current with the display. Read-only monitoring: no command interface writes.

Connect it with

• Modbus Interface ZMB-3X From €399 ex VAT Configure
• Gateway ZGW-20 From €899 ex VAT Configure
• Evaluation Gateway on a Raspberry Pi Edge with one device licensed Free Set up

Models

Specifications

The PM5300 is a 96 x 96 mm panel meter that samples at 64 samples per cycle and reads its currents through external 1 A or 5 A CTs. The six models differ in port and outputs: RS-485 on the PM5310, PM5330 and PM5331, Ethernet on the PM5320, PM5340 and PM5341, and 2 relays on the PM5330, PM5331, PM5340 and PM5341. The PM5331 and PM5341 are the MID versions.^1, 5, 6

Models

PM5310, PM5330 and PM5331 with RS-485; PM5320, PM5340 and PM5341 with Ethernet. All have 2 status inputs and 2 digital outputs; the PM5330, PM5331, PM5340 and PM5341 add 2 form A relays.¹

Accuracy

IEC 61557-12 PMD/[SD|SS]/K70/0.5; active energy class 0.5S to IEC 62053-22 at 5 A nominal (for 1 A nominal when I > 0.15 A); reactive energy class 2; current and L-N voltage class 0.5; frequency class 0.05¹

Voltage inputs

20 to 400 V L-N and 35 to 690 V L-L (wye) or 35 to 600 V L-L (delta) within the specified accuracy; UL listed up to 347 V L-N and 600 V L-L; VT primary up to 1.0 MV AC; 45 to 65 Hz¹

Current inputs

5 A or 1 A nominal CT secondary; measured current 5 mA to 8.5 A; withstand 20 A continuous, 50 A for 10 s per hour and 500 A for 1 s per hour¹

Measurements

Per-phase and total voltage, current, power, power factor and frequency; delivered, received, net and absolute energy; demand; THD, thd, TDD and odd harmonics to the 31st; 4 tariffs; 35 alarms; 256 kB of memory¹

RS-485

PM5310, PM5330 and PM5331: one port; Modbus RTU, Modbus ASCII (7 or 8 bit) or Jbus; 9600, 19200 or 38400 baud; even, odd or no parity (one stop bit with parity, two without); up to 32 devices and 1219 m; 2.5 kV RMS isolation^1, 5

Serial defaults

Modbus RTU, address 1, 19200 baud, even parity¹

Ethernet

PM5320, PM5340 and PM5341: one RJ45 port at up to 100 Mbps with Modbus TCP and BACnet/IP; up to 128 concurrent TCP/IP connections; factory IP address 169.254.0.10, mask 255.255.0.0; BACnet/IP on UDP 47808 by default^1, 6

Control power

100 to 277 V L-N or 100 to 415 V L-L AC ±10%, 50/60 Hz, 5 W or 11 VA at 415 V AC; 125 to 250 V DC ±20%¹

Environment

Meter -25 to 70 °C, display -20 to 70 °C; 5 to 95% RH non-condensing at 50 °C; display IP54 (IP65 with kit METSEIP65OP96X96FF), body IP30; indoor use in a stationary panel¹

Housing

96 x 96 x 72 mm behind the mounting flange, 13 mm protrusion from the cabinet, 430 g; panel up to 6 mm thick¹

Unavailable values

FLOAT32 0xFFC00000; INT64 0x8000000000000000; INT16U 0xFFFF²

Interface

Documented measurements and integration boundaries for PowerLogic PM5300.

• Schneider's register list numbers registers from 1. Edge sends the zero-based PDU address, so register 3000 is address 2999 (0x0BB7). Schneider's PM5320 FAQ reads the currents with FC03 Read Holding Registers at address 2999.
• 32-bit and 64-bit values are stored most significant register first (big-endian), per Schneider FAQ FA275749 for the PM5100, PM5300 and PM5500.
• Product ID at register 90: INT16U, one register. 15272 is a PM5310, 15273 a PM5330, 15274 a PM5331, 15275 a PM5320, 15276 a PM5340 and 15277 a PM5341. Meter Model at register 50 holds the same name as 20 registers of UTF8 text.
• Current A, B and C at registers 3000, 3002 and 3004, neutral at 3006 and average at 3010: FLOAT32, two registers each, in A. Neutral current is reported only where the system has a neutral and every wired phase current is metered.
• Voltage A-B, B-C and C-A at 3020, 3022 and 3024 and the L-L average at 3026; A-N, B-N and C-N at 3028, 3030 and 3032 and the L-N average at 3036: FLOAT32 in V. Line-to-neutral values are reported only where the neutral-referenced voltages are connected.
• Active power A, B and C at 3054, 3056 and 3058, total at 3060: FLOAT32 in kW. Reactive power total at 3068 in kVAR and apparent power total at 3076 in kVA, with per-phase values in the two registers before each total.
• Power factor total at 3084 uses Schneider's four-quadrant encoding (4Q FP PF, range -2 to 2): a value above 1 is leading and PF = 2 minus the value, a value below -1 is leading and PF = -2 minus the value, otherwise the value is the lagging PF. Register 3192 holds the total PF as a plain FLOAT32 from -1 to 1 (IEC sign).
• Frequency at 3110: FLOAT32 in Hz, range 42 to 70.
• Active energy delivered (into the load) at 3204 and received (out of the load) at 3208: INT64, four registers, in Wh. Reactive energy delivered and received at 3220 and 3224 in VARh, apparent energy delivered at 3236 in VAh. FLOAT32 copies in kWh, kVARh and kVAh start at 2700 (delivered) and 2702 (received).
• Demand, FLOAT32: active power last, present, predicted and peak demand at 3764, 3766, 3768 and 3770 in kW; reactive power at 3780 to 3786 in kVAR; apparent power at 3796 to 3802 in kVA. The default demand method is timed interval block with a 15 minute interval (registers 3701 and 3702).
• THD, FLOAT32 in percent: current A, B and C at 21300, 21302 and 21304; voltage A-N, B-N and C-N at 21330, 21332 and 21334; voltage A-B, B-C and C-A at 21322, 21324 and 21326.
• Setup registers to read once: number of phases 2014, number of wires 2015, power system configuration 2016 (11 is 3-phase 4-wire wye grounded, the default), nominal frequency 2017, VT primary 2026 (FLOAT32) and CT primary 2030 (INT16U).
• A value the meter cannot supply reads 0xFFC00000 as FLOAT32, 0x8000000000000000 as INT64 and 0xFFFF as INT16U. Record it as missing, not zero.
• Write registers: the protected command interface starts at 5000 and the unprotected command interface at 5250. The register list allows Reset All Energies (command 2020), Energize Digital Output (6003) and Communications Setup (5000) through the unprotected interface. Keep both interfaces out of a monitoring poll.

Setup

1. Identify the model

   Read the commercial reference on the label (METSEPM5310 to METSEPM5341). The PM5310, PM5330 and PM5331 have an RS-485 port and the PM5320, PM5340 and PM5341 an RJ45 Ethernet port. Confirm the power system, CT ratio and any VT ratio with the installer.

2. Match the port settings

   On an RS-485 model, open Maint > Setup > Comm > Serial (setup password 0 from the factory) and record the protocol, address, baud rate and parity: Modbus RTU, address 1, 19200 baud and even parity from the factory. On an Ethernet model, open Comm > Enet and set a stored IP address, mask and gateway before connecting the meter to the network.

3. Wire the port

   Connect RS-485 +, - and common with the shield in a daisy chain, up to 32 devices and 1219 m. Connect an Ethernet model to the site switch and confirm the Link LED is on.

4. Read the product ID

   Send one FC03 read of register 90 at zero-based PDU address 89 (0x0059). Expect 15272 to 15277, which names the model, before reading any measurement. Over Modbus TCP use unit identifier 255, as Schneider's PM5320 FAQ does.

5. Add frequency, then the measurements

   Read frequency at register 3110 (address 3109, 0x0C25) as two registers, most significant register first, and check it is near 50 or 60 Hz. Then add current at 3000, voltage at 3020 or 3028, total active power at 3060 in kW and active energy delivered at 3204 as INT64 in Wh, comparing each with the display.

6. Keep the poll read-only

   Leave the command interface at 5000 and 5250 out of the Edge poll, change the display passwords from their default of 0, and on an Ethernet model disable BACnet/IP if only Modbus TCP is used.

Common questions

Is register 3000 the address sent on the bus?

No. The register list numbers registers from 1, so a zero-based client sends 2999 for current A at register 3000, as Schneider's PM5320 FAQ does. The product ID read at register 90 (address 89) proves the convention: it returns 15272 to 15277 only when the offset is right.^2, 4

What word order do PM5300 FLOAT32 and INT64 values use?

Most significant register first. Schneider's FAQ FA275749 states that PM5000 series meters, including the PM5300, store data big-endian, with the largest part in the lowest address.³

Which energy register should I log?

Active energy delivered at register 3204 is a four-register INT64 in Wh. The FLOAT32 copy at 2700 is in kWh and keeps only about seven significant digits, so use the INT64 for totals. Received energy is at 3208 as INT64 and 2702 as FLOAT32.²

How do I read the power factor at register 3084?

Register 3084 uses Schneider's four-quadrant encoding from -2 to 2. A value above 1 is leading with PF equal to 2 minus the value, a value below -1 is leading with PF equal to -2 minus the value, and a value between -1 and 1 is the lagging PF. For a plain -1 to 1 value read register 3192 instead.²

Can Edge read a PM5340 over BACnet/IP?

Yes. The PM5320, PM5340 and PM5341 on firmware 2.00 or later are BACnet/IP B-ASC devices on UDP port 47808 by default, with Analog Input, Binary Input and Multi-state Input objects, and Edge reads them as a BACnet/IP client. Modbus TCP and BACnet/IP are both enabled from the factory; disable the one the site does not use.¹