EpiSensor ZMB-30 Manuel utilisateur

User Guide
Wireless Modbus Interface
Applies to: ZMB-30, ZMB-31, ZMB-33
EPI-194-00
© EpiSensor

Table of Contents
Safety Information 3
Electrical Installation 3
Intended Use 5
Related Documents 5
Introduction 6
User Interface 6
Status LED 6
Alt LED 7
Mode Button 7
Install Mode 8
Electrical Installation 8
Mechanical 9
Enclosure & Label Material 9
Mounting Instructions 9
Opening the Enclosure 10
Tamper Evident Seals 10
Compliance 11
Communications 12
Configuration 13
Wireless Communications 15
Sensors 16
Reading Data 16
Ordering Information 17
Troubleshooting & Support 17
Warranty 17
Glossary 17
Page 2of 19

Safety Information
Please read these instructions carefully before trying to install, operate, service or maintain the ZMB. The
following special notes may appear throughout the user guide (or on the equipment labels) to warn of potential
hazards or to call attention to information that clarifies or simplifies a procedure for users.
Symbol
Description
The addition of either symbol to a “Danger” or “Warning” safety label indicates that an
electrical hazard exists which will result in personal injury if the instructions are not
followed.
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
Electrical Installation
Electrical equipment should be installed, operated, serviced and maintained only by qualified personnel. No
responsibility is assumed by EpiSensor for any consequences arising out of the use of this material.
A qualified person is one who has skills and knowledge related to the construction, installation, and operation of
electrical equipment and has received safety training to recognize and avoid the hazards involved.
Installation, wiring, testing and service must be performed in accordance with all local and national electrical
codes.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
➔NEVER work alone.
➔Use appropriate personal protective equipment (PPE) and follow safe electrical work practices.
➔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 3of 19

➔Before performing visual inspections, tests, or maintenance on this equipment, disconnect all sources
of electric power. Assume that all circuits are live until they have been completely de-energized,
tested, and tagged. Pay particular attention to the design of the power system. Consider all sources of
power, including the possibility of backfeeding.
➔Turn off all power supplying the ZMB and the area in which it is installed before working on it.
➔Always use a properly rated voltage sensing device to confirm that all power is off.
➔Before closing all covers and doors, inspect the work area for tools and objects that may have been
left inside the equipment or panel.
➔When removing or installing metering or other equipment, do not allow it to extend into an energised
bus.
➔The successful operation of this equipment depends upon proper handling,
➔Neglecting fundamental installation requirements may lead to personal injury as well as damage to
electrical equipment or other property.
➔Before performing Dielectric (Hi-Pot) or Megger testing on any equipment in which the energy meter
is installed, disconnect all input and output wires to the ZMB.
➔High voltage testing may damage electronic components contained in the ZMB.
➔Failure to follow these instructions will result in death or serious injury.
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.
➔Clearly label the device’s disconnect circuit mechanism and install it within easy reach of the operator.
➔The fuses / circuit breakers must be rated for the installation voltage and sized for the available fault
current.
➔The ZMB should be installed in a well ventilated location
Page 4of 19

Intended Use
Do not use this device for critical control or protection applications where human or equipment safety relies on
the operation of the control circuit. Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Related Documents
Related installation and configuration documents are listed in the following table:
Document
Reference No.
EpiSensor ZMB Datasheet
EPI-195-00
Install Sheet for ZMB-3X
EPI-090-00
Application Note - ZMB Device Compatibility
EPI-143-00
Application Note - Modifying Node Profiles for ZMB Product Range
EPI-104-00
Gateway API User Guide
ESE-009-08
Page 5of 19

Introduction
EpiSensor’s ZMB Wireless Modbus Interface is designed to make it easy to collect data from a wide range of
heating, cooling and other energy meters using the Modbus RTU (over RS-485) wired communications standard.
The ZMB reports data through the wireless sensor network to the Gateway, which then manages bi-directional
communications to various compatible software and IoT platforms.
User Interface
There are two LED’s and one button on the front panel of the ZMB product range that are used to show the
status of the product and to issue commands. This section describes how to interact with user interface and
what each state means.
A node must be in “command mode” before users can interact with the product. To put the node in Command
Mode, press and hold the “MODE” button for 2 seconds, then release. At this point, a battery powered node will
switch the LED On Solid, while a mains powered node will flicker the LED and then switch the LED On Solid.
Status LED
The red status LED will flash in different sequences depending on the current state of the ZMB. This table below
lists all possible LED flash sequences and their meaning.
Flash Sequence
Description
Diagram
Page 6of 19

Heartbeat
The node is operating correctly and has
successfully joined a wireless network.
Inverse Heartbeat
The node is has received valid security keys, but
is not connected to a Gateway.
Square Wave
The node is operating correctly but has lost
contact with the Gateway.
On Solid, or Off
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.
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. The button should be pressed and then released to
register a valid button press. If no further button presses are made, the device will terminate “command mode”
4 seconds after the last button press.
Press
Description
0
Send a PING message disable any active Install Mode or Range Test Mode. If the node is not joined,
try and join a network.
Page 7of 19

1
Send a DATA message to the Gateway for any enabled sensors that are not reporting in
‘snap-to-clock’ mode.
2
Leave the current network. Mains powered Nodes will automatically try and join a new network
once they have left and will periodically retry the join. Battery powered nodes will go to sleep.
4
Start “Install Mode”. Node sends a PING message every 15 seconds, with the LED pulse speed
indicating the wireless signal strength of the reply. Automatically expires after 5 minutes.
6
Reboot the node. Security keys for the wireless network the node is joined to will not be erased, and
all other settings will remain the same.
8
Factory-reset the node and perform a reboot. All settings and security keys will be lost. The node will
be returned to its factory default state.
12
Start “Range Test” mode. Node will send a PING message every 5 seconds. The LED pulse speed
indicates the wireless signal strength of the reply. Automatically expires after 5 minutes.
Install Mode
Issuing a press sequence on the Mode button of a powered node can enable either “Install Mode” or “Site
Survey Mode” on that node. In this mode, the LED will flash at a rate that indicates the wireless signal strength
(Link Quality Indicator) of that node, based on the following table:
Flash Rate
Flashes per Second
Wireless Signal Strength
LQI
Very Fast
10 flashes / second (Light on 50ms, off 50ms)
Very good Signal
> 200
Fast
2 flashes / second (LED on 250ms, off 250ms)
Good Signal
> 150
Slow
1 flash / 2 seconds (LED on 1 sec, off 1 sec)
OK Signal
> 100
Very Slow
1 flash / 6 seconds (LED on 3 sec, off 3 sec)
Poor Signal
< 100
This mode expires after 15 minutes for Install Mode and 5 minutes for Site Survey Mode.
Electrical Installation
The ZMB 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 – Brown
N – Blue
Important Note: The ZMB should be connected via a switched junction box and breaker to protect the cable.
Also, please ensure that the live connection is made on the same circuit as the neutral connection where
residual-current devices (RCD’s) are used.
Page 8of 19

Installation should only be carried out only by personnel qualified in the installation of electrical equipment. All
parts of the circuit within the enclosure must be considered to be at dangerously high mains voltage when the
unit is connected to a mains voltage source.
Mechanical
This section describes how to wall-mount the ZMB enclosure, the enclosure materials and important safety
considerations when connecting the ZMB to external systems.
Enclosure & Label Material
The ZMB is housed in an IP67 water and dust proof enclosure to provide maximum safety, flexibility and
reliability. The enclosure material is polycarbonate plastic, which is resistant to a variety of chemicals, oils and
detergents.
The front label is made from polycarbonate. There will be two or more labels on the back of the enclosure,
depending on the model selected. The compliance label is made from PVC and the serial number label is made
from polyethylene film.
Mounting Instructions
The ZMB product range will have two (ZMB-31, ZMB-33) or three (ZMB-21) cable glands at the bottom
depending on the model.
The ZMB requires 2 screws for mounting. These screws can be preinstalled on a vertical surface spaced 122mm
vertically apart. The head of the screw should be less than 8.5mm in diameter and the screw thickness should be
less than 4.5mm. The screws should be left unscrewed by more than 5 mm before installing the enclosure.
Important Safety Note
The enclosure of the ZMB must not be drilled, cut or modified in any way for mounting or
connecting to external systems.
All parts of the circuit within the enclosure must be considered to be at dangerously high
mains voltage when the unit is connected to a mains voltage source. Modifying the
enclosure could expose parts of the system to users, or cause an internal fault or short
circuit.
There are no user-serviceable parts inside the ZMB enclosure, and it should always be
isolated from mains voltages before opening the enclosure lid.
Page 9of 19

Opening the Enclosure
To make connections to the ZMB, it is necessary to open the lid of the enclosure. This is fastened with four
screws that are accessible from the back of the enclosure. This should only be done by qualified personnel, and
only when the ZMB has been isolated from any high voltage supplies. Please consult the safety notes at the start
of this user guide for more information.
Important Safety Note
EpiSensor equipment should be installed, operated, serviced and maintained only by
qualified personnel.
There are no user-serviceable parts inside the ZMB enclosure, and it should always be
isolated from mains voltages before opening the enclosure lid.
When closing the lid, take care to ensure that no wires or cable ties are obstructing the gasket of the enclosure,
as this could interfere with the waterproof seal. When tightening the screws on the lid, apply pressure to the
enclosure so the gasket is compressed, and tighten each screw gradually and in sequence.
Tamper Evident Seals
Some applications (particularly applications where data is used for billing purposes) will require tamper evident
seals to be attached to the ZMB enclosure. These seals can be attached to two or more of the corners of the
ZMB enclosure, as shown on the diagram below.
Page 10 of 19
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