Siemens SENTRON PAC3200

Compatibility

Compatible with EpiSensor Edge over Modbus RTU and Modbus TCP.

Connect its RS-485 port to a Modbus Interface or to a serial interface on the Gateway, or use its Ethernet port for Modbus TCP. Edge polls it with its Modbus client.

Edge reads 32 values from it, listed under Interface.

Connect it with

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

Specifications

The SENTRON PAC3200 is Siemens' panel-mounted power monitoring device for low-voltage switchboards. It fits a 96 × 96 mm cutout, 51 mm deep, and measures single-phase, two-phase and three-phase systems with two, three or four wires, in TN, TT and IT networks. The multi-range supply version connects directly to systems up to 690 V between phases; the extra-low voltage version up to 500 V. Current always comes from x/1 A or x/5 A transformers.¹

Power

Mains. Auxiliary supply on L/+ and N/-: 95 to 240 V AC or 110 to 340 V DC on the multi-range version, 22 to 65 V DC on the extra-low voltage version, typically 8 VA. Do not take it from the voltage transformers.¹

Active energy accuracy

Class 0.5S (IEC 62053-22)¹

Reactive energy accuracy

Class 2 (IEC 62053-23)¹

Measuring accuracy

Voltage ±0.3 %, current ±0.2 %, power ±0.5 %, frequency ±0.05 %¹

Voltage inputs (multi-range supply)

Up to 400 V L-N and 690 V L-L (+20 %), 347 V and 600 V for UL¹

Voltage inputs (extra-low voltage supply)

Up to 289 V L-N and 500 V L-L (+20 %)¹

Current inputs

x/1 A or x/5 A current transformers, 100 A for 1 s¹

Communication

Ethernet (RJ45) for Modbus TCP or SEAbus TCP; Modbus RTU with the PAC RS485 expansion module¹

Dimensions

96 × 96 × 51 mm; 73 mm deep with an expansion module¹

Protection

IP65 front; IP20 rear with screw terminals, IP10 with ring lugs¹

Operating temperature

-10 to 55 °C¹

Order numbers

7KM2112-0BA00-3AA0 (multi-range supply, screw terminals), 7KM2112-0BA00-2AA0 (ring lugs), 7KM2111-1BA00-3AA0 (extra-low voltage supply)¹

Where it is used

• Incomers and main feeders in low-voltage switchboards, on existing 1 A or 5 A current transformers.

  Transformer and distribution board monitoring

• Energy and power quality reporting across the switchboards of several sites, with voltage and current THD per phase.

  Multi-site energy monitoring

• Reading meters that are already on a site's Ethernet network into a BMS or SCADA system through Edge.

  Modbus meter integration for a BMS or SCADA system

Interface

Siemens lists each value by offset, and the offset is the address sent on the bus: total active power is offset 65, which a 40001-style master shows as 40066. A read must start on the first register of a value, or the meter answers with an error.^1, 2

The ten energy counters are 64-bit floating-point values in Wh, varh and VAh at offsets 801 to 837, four registers each. The Edge template leaves them out because Edge has no 64-bit float format; the instantaneous values above are all 32-bit.¹

Setup

1. Choose the port

   Use the built-in Ethernet port for Modbus TCP, or fit a PAC RS485 expansion module for Modbus RTU on an RS-485 bus through a ZMB-31 or the Gateway's serial interface.¹

2. Set the network or bus

   For Ethernet, enter the IP address, subnet and gateway under Settings > Communication, then change Protocol from SEAbus TCP to MODBUS TCP and restart the meter. For RS-485, set the address, baud rate and framing under Settings > RS485 Module: the module starts at address 126, 19200 bit/s and 8N2.¹

3. Point Edge at it

   Add the meter to Edge as a Modbus TCP device on port 502, or as an RTU device with the same address, speed and framing as the module.¹

4. Read one register

   Import the template and read Voltage L1-N at offset 1. It arrives as a float in volts and should match the display.¹

5. Enable the map

   Once voltage, current and total active power match the display, enable the rest of the map and watch several fresh readings before you add exports or alarms.

Common questions

Why does the PAC3200 not answer Modbus TCP?

The Ethernet port ships speaking SEAbus TCP. Enter the network settings, change Protocol to MODBUS TCP under Settings > Communication and restart the meter. Modbus TCP then answers on port 502.¹

Which function codes does the PAC3200 support?

Every measured value can be read with function code 3 or 4. Writable settings, such as the communication parameters from offset 63015, are written with function code 16.¹

What are the RS-485 settings on the PAC RS485 module?

4800, 9600, 19200 or 38400 bit/s, with 8N2, 8E1, 8O1 or 8N1 framing. The module starts at address 126, 19200 bit/s and 8N2, speaking Modbus RTU with an automatic response time.¹