EpiSensor ZDI-20 Manual de usuario
User Guide
Wireless Digital Signal Sensor
Applies to: ZDI-20, ZDI-22
EPI-204-00
© EpiSensor
Table of Contents
Safety Information 4
Electrical Installation 4
Intended Use 6
Related Documents 6
Introduction 6
Digital Signal Installation 6
Configuring the Jumpers 7
Input Operation 8
Dry Signal 8
Open Collector Signal 8
Active Signal 9
User Interface 9
Status LED 10
Alt LED 10
Mode Button 11
Install Mode 11
Electrical Installation 12
Mechanical 12
Enclosure & Label Material 12
Mounting Instructions 12
Opening the Enclosure 13
Tamper Evident Seals 13
Compliance 14
Wireless Communications 15
Sensors 16
Ordering Information 17
Troubleshooting & Support 17
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Safety Information
Please read these instructions carefully before trying to install, operate, service or maintain the ZDI. 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.
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➔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 ZDI 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 ZDI.
➔High voltage testing may damage electronic components contained in the ZDI.
➔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.
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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 ZDI/ZPC Datasheet
EPI-072-00
Install Sheet for ZDI-2X
EPI-088-00
Gateway API User Guide
ESE-009-08
Introduction
EpiSensor’s ZDI Digital Signal Sensor is intended to detect the open/closed status of switches, for example to
detect when a door in a warehouse opens, and the percentage of time that it is open for. The ZDI reports the
data through the wireless sensor network to the Gateway.
The ZDI reports data in terms of the input state (represented as “0” or “1”) and also the ‘percentage of time
open or closed’. This pre-processing of the open/closed state into a percentage increases the accuracy and
reduces the load on higher level software applications, because the data is in a format that can easily be
displayed on graphs. The ZDI-20/22 product variants are both mains powered versions. The available product
variants are as follows:
SKU
Description
ZDI-20
Digital input sensor for door/window/magnetic switches, single channel, mains powered
ZDI-22
Digital input sensor for door/window/magnetic switches, dual channel, mains powered
Digital Signal Installation
The digital signal output wires should be fed through the enclosure’s M10 waterproof glands and connected to
the terminal block, as shown in the diagram below, taking note of the positive and negative terminals. There will
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be 2 terminals used per channel, so the dual-channel version (ZDI-22) would use 4 terminals. The input wires are
connected to IN1 for single channel models, and IN1 and IN2 for dual-channel models.
Diagram of a digital signal connected to Input 1 of the single-channel ZDI-20
Note: the single-channel version may use the same hardware as the dual channel version and so would also have
a 4-pin terminal block. However, only the first channel (IN1) will be enabled on the ZDI-20 variant.
Dry signals or pulses are not polarity sensitive, but Open Collector and Active signals or pulses are polarity
sensitive. Take note of the positive and negative terminals for both inputs.
Configuring the Jumpers
To the right of the terminal block there is a selector grid that is used to configure the ZDI for different types of
digital inputs. There are two rows of jumpers in the grid, the top row for IN1 and the bottom for IN2. The
columns of the grid are used to configure the input type. The options are:
●AP for Active Signal or Pulse Inputs
●DP for Dry Signal or Pulse Inputs, or Open Collector Inputs
●0-10 for 0-10 Volt Sensors (not used on the ZDI product range)
●4-20 for 4-20 Milliamp Sensors (not used on the ZDI product range)
The image below shows a dual channel mains powered digital signal sensor where IN1 is configured for a Dry
Signal/Pulse and IN2 is configured for an Active Signal/Pulse:
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Diagram showing ZDI-22 with IN1 configured for an Dry Pulse, and IN2 configured for a Active Pulse
Input Operation
This section describes the operation of the 3 different signal types.
Dry Signal
A dry signal can be thought of as a simple switch. Window alarm contacts or reed switches would be examples of
such a connection. In this configuration, a small voltage is applied by the ZDI to the + terminal of the IN
connector. A pulse or signal is detected when this positive (+) terminal is connected to the negative (–) terminal
through a switch.
The selector grid for Dry Pulse/Signal should be on the “DP” setting.
Open Collector Signal
An Open Collector signal is generally used by electronic meters. The diagram below is an example of such a
system.
Schematic diagram of an open collector pulse output
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When the Integrated Circuit (IC) Output is pulsed, the signal on the “Open Collector” gets connected to the IC’s
Ground. This system is polarity sensitive. The Open Collector connection must be connected to the positive (+)
terminal of the IN connector and IC Ground must be connected to the negative (–) terminal of the IN connector.
As the Open Collector is simply an electronic switch, the selector grid for the Open Collector signal should be on
the “DP” setting.
Active Signal
An active signal occurs when the system generating the signal applies a positive DC voltage for a period of time.
This system is polarity sensitive. The Signal Generator and ZDI units share a common Ground on the negative (–)
terminal of the IN connector. The positive DC voltage representing the signal must be connected to the positive
(+) terminal of the IN connector.
Note: The Active Signal Voltage on the ZDI-20/22 should not exceed 40 Volts!
The jumper should be in the “AP” position on the selector grid for monitoring Active Pulse/Signal outputs.
User Interface
There are two LED’s and one button on the front panel of the ZDI 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.
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Status LED
The red status LED will flash in different sequences depending on the current state of the ZDI. This table below
lists all possible LED flash sequences and their meaning.
Flash Sequence
Description
Diagram
Heartbeat
The node is operating correctly and has
successfully joined a wireless network.
Inverse Heartbeat
The node has 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 does not have
valid security keys and is searching for a special
commissioning 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.
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Este manual sirve para los siguientes modelos
1
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