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EW500 Series Energy Calculators

EW500 Series Energy Calculators

Honeywell Home EW500 energy calculators are used for energy consumption metering in hydronic heating and cooling systems...

Product Description

Honeywell Home EW500 energy calculators are used for energy consumption metering in hydronic heating and cooling systems.

They are typically combined with a pair of temperature sensors and a mechanical or ultrasonic flow sensor, for example Honeywell Home EW370 or EW480 Series, to provide the full functionality of a heat meter. EW500 energy calculators are suitable for energy metering of heating energy, cooling energy or heating and cooling energy transported in one pipeline. The switch between heating and cooling register happens automatically when the t turns negative and the supply temperature falls below the programmed threshold. Metered values, error logs and configuration changes are stored in a non volatile memory. The calculator can be read out over the display or remotely. For local readout the meter is equipped with a multiple line 8+4 digit LCD display. For remote readout the EW500 offers a variety of retrofittable interface modules, including M-Bus and Modbus. The calculators standard configuration can be modified by using a PC software and connecting over the ZVEI standard optical interface on the front of the device with optical interface EWA3001798. A separate permission level is available for user and legalisation access to avoid unauthorised tampering with approval relevant configuration items. Temperature sensors are not supplied with the calculator and have to be ordered separately. Standard configuration is prepared for 2-wire Pt500 temperature sensors. A model is available for 4-wire Pt100 temperature sensors. The housing is closed with two sealable screws. It has protection class IP54 as standard. EW500 energy calculators are supplied with a backplate for mounting to a wall.

Technical Properties

Approvals MID
Medium type water
Display functions

LCD, 8+4-digit with symbols

Power source Battery with 11 year nominal lifetime
Features
  • Suitable for ultrasonic and mechanical flow sensors
  • Up to two field retrofittable communications modules, including M-Bus and Modbus
  • Four additional configurable pulse inputs•Versatile power supply
Protection class

IP54 (standard) IP65 or IP68 on request

Functions
  • Measurement and display of current data
  • Calculation and display of average data for period, set in the range of 1 minute to 24 hours
  • Setting, archiving and display of up to two independent tariffs
  • Calculation, archiving and display of measured data in five groups with configurable time cycles
  • Setting, archiving and display of accounting data
  • Error log (last 83 records) and occurrence log (last 256 records) with timestamp
  • Configuration change log (last 83 records) and metrological change log (last 62 records) with timestamp
  • Device parametrisation with PC software or, with limitations, by using push buttons on front of calculator housing

Certifications and Awards

Related Material

Products

Product Type Product description
Pulse value
Interface
Interface type
EW500 Series with two free communication slots (no modules installed)

EW5001CD0010
Energy unit: kWh with 0 decimal places 10 litres Retrofittable (two slots)

EW5001CD0100
Energy unit: MWh with 1 decimal place 100 litres Retrofittable (two slots)

EW5001CD1000
Energy unit: MWh with 1 decimal place 1,000 litres Retrofittable (two slots)
EW500 Series with two free communication slots main pulse value and pipeline (return / supply) field configurable

EW5001CDZ

depending on pulse value / 2-wire Pt500

-

Retrofittable (two slots)
EW500 Series with installed M-Bus module and one free communication slot

EW5001CM0010
Energy unit: kWh with 0 decimal places 10 litres M-Bus Retrofittable (factory installed)

EW5001CM0100
Energy unit: MWh with 1 decimal place 100 litres M-Bus Retrofittable (factory installed)
EW500 Series with installed Modbus module and one free communication slot

EW5001CT0010
Energy unit: kWh with 0 decimal places 10 litres Modbus Retrofittable (factory installed)

EW5001CT0100
Energy unit: MWh with 1 decimal place 100 litres Modbus Retrofittable (factory installed)

Accessories and replacement parts

Power Supply

Image Description Product Type Downloads
Mains supply unit 230V AC EWA500P-230V  

Unit configuration

Image Description Product Type Downloads
Optical interface with USB connection EWA3001798  
EW500SET expert dongle for advanced configuration of EW500 Series EWP500-XPRT  

Software

Image Description Product Type Downloads
Configuration software tool, can be downloaded from the Resideo/ Honeywell Home metering server: https://homecomfort.resideo.com/sites/Europe/en-gb/ Solutions/Metering/Pages/Metering.aspx EWP500SET  

Pair of Pt500 temperature sensors, 5.2 mm (MID approved)

Image Description Product Type Downloads
Pair of Pt500 temperature sensors, cable length 2m EWA3002680  
Pair of Pt500 temperature sensors, cable length 3m EWA3002681  
Pair of Pt500 temperature sensors, cable length 5m EWA3002682  
Pair of Pt500 temperature sensors, cable length 10m EWA3002679  

Tailpiece for connection of supply temperature sensor

Image Description Product Type Downloads
Tailpiece R1/2 external thread, M10 x 1 sensor thread EWA087HY003  

Brass immersion pockets (MID approved)

Image Description Product Type Downloads
85mm, for DN80...125 EWA3004406  
52 mm, for DN40...65 EWA3002685  
35mm, for DN25...32 EWA3002684  
120mm, for DN150 EWA3004407  

Ball valve with internal threads

Image Description Product Type Downloads
For DN32, 1 1/2" internal threads EWA087HY008  
For DN15, G 1/2" internal thread EWA087HY004  
For DN20, G 3/4" internal thread EWA087HY005  
For DN25, 1" internal threads EWA087HY006  

Modules

Image Description Product Type Downloads
Analogue module, required external power supply, 12-30 VAC or 16-30 VDC, two 420 mA outputs, required configuration of EW500 EWA500C-ANALOG  
Pulse in-/output module, 24V EWA500C-PIPO24V  
Lonworks communication module EWA500C-LON  
Wired M-Bus communication module EWA500C-MBUS  
Modbus communication module EWA500C-RS485  
RS232 communication module EWA500C-RS232  
Pulse out communication module EWA500C-PO  
Pulse in/out communication module EWA500C-PIPO