Accuenergy AcuRev 1310

Compatibility

Compatible with EpiSensor Edge over Modbus RTU

The AcuRev 1310 is compatible with EpiSensor Edge over its built-in RS-485 port running Modbus RTU, the factory default, read through a ZMB-31 Modbus Interface or a Gateway serial port. Accuenergy publishes the FC03 register map with hexadecimal and decimal addresses and data types, and a SunSpec block whose values carry units and scale factors.

AcuRev 1312, 1313 and 1314 meters on the built-in RS-485 port with the protocol set to Modbus, using Modbus map version 1.00 and user manual version 1.2.11. Site check: read the SunSpec ID at 0xC350 and compare the first voltage read with the display before adding points. Read-only monitoring: no writes to the settings, energy, reset or relay registers.

Connect it with

• Modbus Interface ZMB-3X From €399 ex VAT Configure
• Gateway ZGW-20 From €899 ex VAT Configure

Models

Specifications

Models

AcuRev 1312, 1313 and 1314. The 1314 has four current channels; the 1312 is Measurement Canada approved.^1, 3

Current inputs

5A/1A, 333 mV, Rogowski coil (RCT) or 80/100/200 mA CTs. CT1 primary 1 to 50,000. 5A/1A CTs are earthed at one end; mV, RCT and mA CT leads are not earthed.^1, 3

Voltage

Direct input up to 400 V AC L-N and 690 V AC L-L, 50/60 Hz; PTs above 690 V L-L. Wiring modes 3LN, 2LL, 1LL and 1LN.^1, 3

Accuracy

Active energy class 0.5S to IEC 62053-22 and class 0.5 to ANSI C12.20; reactive energy class 2 to IEC 62053-23; voltage, current and power 0.5%, frequency 0.2%.³

RS-485

Terminals A (+), B (-) and S (shield). Modbus RTU by default, or BACnet MS/TP. Address 1 to 247 (default 1); 1200 to 38400 bit/s (default 19200); parity even, odd, none with 2 stop bits or none with 1 stop bit (default). Up to 1200 m of shielded twisted pair.¹

Other interfaces

Pulse output on P1 and P2 (1 to 60000 pulses per kWh or kvarh, 20 to 100 ms); optional relay output on R1 and R2 for alarm or control; non-contact infrared port.^1, 3

Power supply

100 to 415 V AC, 50/60 Hz, or 100 to 300 V DC on L and N; less than 2 W.³

Housing

35 mm DIN rail; 108 × 90 mm front with sealable terminal covers.^1, 3

Environment and approvals

Operating -25 to +70 °C in the datasheet; storage -40 to +85 °C; humidity 5 to 95% non-condensing. IEC 61010-1 and UL 61010-1, CE, RoHS, BTL listed for B-SS.³

Interface

Documented measurements and integration boundaries for AcuRev 1310.

• The map prints each address in hexadecimal and decimal; both describe the same zero-based PDU address, so 0x200A is decimal 8202 on the wire. Read with FC03. The map's writes use FC16, and the relay output uses FC01 and FC05.
• Check the address convention once: two registers at 0xC350 (decimal 50000) return the SunSpec ID 0x53756E53, ASCII SunS. An older copy of the SunSpec block starts at 0x1000.
• Float block, two registers each: total current 0x2000, phase A, B and C current 0x2002, 0x2004 and 0x2006; phase average voltage 0x2008; phase A, B and C voltage 0x200A, 0x200C and 0x200E; line average voltage 0x2010; line AB, BC and CA voltage 0x2012, 0x2014 and 0x2016; frequency 0x2018.
• Total active power 0x201A with phases A to C at 0x201C to 0x2020; total apparent power 0x2022 with phases at 0x2024 to 0x2028; total reactive power 0x202A with phases at 0x202C to 0x2030; total power factor 0x2032 with phases at 0x2034 to 0x2038: float.
• The map and manual name these registers float without stating the word order or a unit column; the manual says the communication value of an electrical measurement equals the real value. Confirm word order and whether power is in W or kW against the display on the first read.
• Energy counters, int32 in two registers: total active energy exported 0x2046 and imported 0x204E, each followed by phases A to C; apparent energy exported 0x2056 and imported 0x205E; reactive energy by quadrant Q1 0x2066, Q2 0x206E, Q3 0x2076 and Q4 0x207E. The map gives no scale, so compare one with the display kWh before setting the multiplier.
• Tariff and net energy, int32: total active energy 0x1300 with tariffs 1 to 4 at 0x1302 to 0x1308; net active energy 0x130A (signed); imported active energy tariffs 1 to 4 from 0x1314; exported from 0x131C; reactive energy from 0x1324.
• SunSpec meter block, int16 with a separate scale factor: currents 0xC397 to 0xC39A (A) with the factor at 0xC39B; voltages 0xC39C to 0xC3A3 (V) with the factor at 0xC3A4; frequency 0xC3A5 with the factor at 0xC3A6; active power 0xC3A7 to 0xC3AA (W) with the factor at 0xC3AB; power factor 0xC3B6 to 0xC3B9 with the factor at 0xC3BA. Value = register × 10^factor.
• SunSpec energy, acc32 in two registers: total active energy exported 0xC3BB and imported 0xC3C3 in Wh, with the shared energy scale factor at 0xC3CB. The map labels 0xC39B both as the current scale factor and as CT Ratio; treat it as the scale factor and confirm current against the display.
• Settings are readable at 0x200 (address), 0x201 (baud rate), 0x202 (parity), 0x210 (primary or secondary side), 0x211 (wiring mode), 0x212 and 0x213 (CT2, CT1) and 0x215 to 0x217 (PT2, PT1, ten times the real value). Wiring check result is at 0x100 and seal status at 0x101 (0x0A sealed).
• Settings, the energy counters, resets and the relay are writable. Keep FC05 and FC16 out of a monitoring poll.

Setup

1. Identify the meter

   Read the model from the side label, for example AcuRev 1314-333-X1, which gives the model and current input. Note the wiring mode and the CT and PT ratios configured on the meter.

2. Read the serial settings without changing them

   The all-parameters display shows the device address, baud rate and parity. The settings mode behind the SET key under the terminal cover shows the protocol, which must be Modbus. The defaults are address 1, 19200 bit/s, no parity and 1 stop bit. Enter the same values in the Edge serial client or the ZMB-31.

3. Wire the RS-485 pair

   Connect A (+) and B (-) to the bus with shielded twisted pair, earth the shield at one end only and avoid T branches. Give each meter its own address.

4. Make two reads

   Read two registers at 0xC350 and expect 53 75 6E 53. Then read the SunSpec voltage block at 0xC39D as in the worked read below and compare phase A voltage with the display.

5. Add the points you need

   Add current, power and energy from the SunSpec block with their scale factors, or from the float and int32 blocks after one comparison with the display. Keep FC05 and FC16 writes out of the polling configuration.

Common questions

Which block should I read: float, int32 or SunSpec?

The SunSpec block at 0xC350 is the most completely specified: each value is one 16-bit register in A, V, W or Wh with a published scale factor. The float block at 0x2000 and the energy blocks at 0x2046 and 0x1300 carry more detail per phase and per tariff, but the map does not state their word order or units, so compare one of each with the display first.^1, 2

Is 0x200A the same register as 8202?

Yes. The map lists each register in hexadecimal and decimal, and both are the zero-based PDU address. A client that numbers holding registers from one needs 8203.²

Why does the meter not answer at 9600 bit/s?

The default is 19200 bit/s with no parity and 1 stop bit, and the port may have been switched to BACnet MS/TP. Check the protocol, address, baud rate and parity in the settings mode before changing anything on the Edge side.¹

Can a monitoring client change the meter by accident?

The map marks settings, energy counters and resets as writable with FC16, and the relay accepts FC05. Resets and energy writes also need the communication write authority set with the meter password, and a sealed meter refuses changes to important parameters. A monitoring configuration should still read with FC03 only.^1, 2

Can the AcuRev 1310 be used for billing?

The datasheet gives class 0.5S to IEC 62053-22 and class 0.5 to ANSI C12.20, and the AcuRev 1312 is Measurement Canada approved. The retained sources list no MID approval.³