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Summary of Contents for EpiSensor ZHM-20
- Page 1 User Guide Wireless M-Bus Interface Applies to: ZHM-20, ZHM-21 EPI-085-00 © EpiSensor...
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Page 2: Table Of Contents
Table of Contents Safety Information Electrical Installation Intended Use Related Documents Introduction M-Bus Communications Configuration Scanning Preset Settings Valid Baud Rates Connection Reading Data Valve Control User Interface Status LED Alt LED Mode Button Install Mode Electrical Installation Mechanical Enclosure & Label Material Mounting Instructions Opening the Enclosure Tamper Evident Seals... - Page 3 Sensors Ordering Information Troubleshooting & Support Warranty Glossary Page 3 of 18...
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Page 4: Safety Information
Only qualified electrical workers should install this equipment. Such work should be performed only after reading the entire set of installation instructions. ➔ If the equipment is not used in a manner specified by EpiSensor, the protection provided by the equipment may be impaired. Page 4 of 18... - Page 5 Installation & Safety Notes ➔ EpiSensor equipment should be installed, operated, serviced and maintained only by qualified personnel. EpiSensor does not assume any responsibility for any consequences arising out of the use of this equipment. ➔ Fuse for neutral terminal is required if the source neutral connection is not grounded.
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Page 6: Intended Use
Gateway API User Guide Introduction EpiSensor’s ZHM Wireless M-Bus Interface is designed to make it easy to collect data from a wide range of heating, cooling and other energy meters using the M-Bus wired communications standard. The ZHM-21 also includes a relay output that can control a valve, allowing remote shut-off via the API on the EpiSensor Gateway. -
Page 7: Configuration
RSP_UD (Data Transfer from Slave to Master after Request) has been received is it parsed by the ZHM which then maps particular M-Bus “Value Information Fields” to EpiSensor Sensor IDs. It also converts from value specific data types to EpiSensor data types. -
Page 8: Valve Control
Temperature Difference, 10(nn-3) K, 1mK to E110 00nn Heat Delta T (Kelvin) 1000mK E001 0nnn Volume, 10(nnn-6) m3, 0.001l to 10000l Volume 1 (litres) E110 1110 Units for H.C.A. - dimensionless Volume 2 Delta T (Kelvin) is not available from some manufacturers (e.g. Sontex) and is calculated as “Heat Delta T = Heat Out - Heat In”. -
Page 9: User Interface
The switching capability of the ZHM relay is 0.1A at 250V (~ 25 Watts). There is one ‘normally open’ and one ‘normally closed’ connection option. For additional technical information on the relays, like rated voltages, currents, and type - please check the ZHM datasheet. User Interface There are two LED’s and one button on the front panel of the ZHM product range that are used to show the status of the product and to issue commands. -
Page 10: Status Led
If the LED is On Solid, the node is searching for a Gateway to join. If it is Off, the node may not be powered, or there is a problem with the node. Check the power supply, and if the problem persists, contact EpiSensor support. Page 10 of 18... -
Page 11: Alt Led
Alt LED The Alt LED will flash when data is transmitted or received on the ZigBee wireless network. For mains powered nodes, it will always be active - but for battery powered nodes, it will only be active when in Command Mode. Mode Button The following options are available with Command Mode. -
Page 12: Electrical Installation
This mode expires after 15 minutes for Install Mode and 5 minutes for Site Survey Mode. Electrical Installation The ZHM is a mains powered device. The mains cable is colour coded to conform to European CENELEC standards. The CENELEC standard insulation colours are as follows: Live –... -
Page 13: Mechanical
Mounting Instructions The ZHM product range will have two (ZHM-20) or three (ZHM-21) cable glands at the bottom depending on the model. The ZHM requires 2 screws for mounting. These screws can be preinstalled on a vertical surface spaced 122mm vertically apart. -
Page 14: Tamper Evident Seals
The label material is gloss white PVC foil with permanent adhesive and gloss overlaminate. The following table lists the certification and safety symbols that appear on the certification labels of EpiSensor products. Please refer to it for a definition of each symbol. -
Page 15: Wireless Communications
Wireless Communications All EpiSensor products use IEEE 802.15.4 ZigBee Pro for wireless communications operating at 2.4GHz. This is a secure, scalable mesh networking communications protocol designed for transmitting small amounts of data reliably, and at low power levels. - Page 16 There are two types of ZigBee radio module used across the EpiSensor product range, a power amplified version, and non-power amplified version. The power output of nodes with a power-amplified module can be configured with an output power level of +20 dBm depending on the region they are deployed in.
- Page 17 Mains powered, M-Bus master, max 1 connected meter, with valve control Troubleshooting & Support If you are experiencing problems with your ZHM or any other part of your EpiSensor system, or you notice something unusual - please contact EpiSensor support at the following email address, phone number or via live chat on our website.
- Page 18 All EpiSensor products and provided with a 365 day limited warranty effective from the shipping/invoice date of an order. During the warranty period, under the conditions of normal use, EpiSensor will repair or replace any product that has a manufacturing defect.
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