Q-Tech WP2P Digital & Analogue Manuel utilisateur

WP2P Digital

User Guide

WP2P Digital

Version 1.7

Contents

Contents .......................................................................................................................... 2

About This User Guide ...................................................................................................... 4

Product overview ............................................................................................................. 4

Features ......................................................................................................................................................4

Hardware ....................................................................................................................................................5

Digital I/O ....................................................................................................................................................5

Output Relays ..............................................................................................................................................5

Switched Inputs ...........................................................................................................................................6

WP2P Repeater Module ..............................................................................................................................6

Preparing for Installation .................................................................................................. 7

Installation Notes ............................................................................................................. 7

Mounting .....................................................................................................................................................7

Antenna .......................................................................................................................................................7

Power Supply Notes ....................................................................................................................................8

Power Supply ................................................................................................................................................. 8

Internal Fuse .................................................................................................................................................. 8

Current Consumption & Standby Battery Capacity ....................................................................................... 8

Adjustments & Settings ...............................................................................................................................8

HOLD switch: Output Relay Configuration ..................................................................................................... 8

REPT switch: Repeater Configuration ............................................................................................................ 8

Radio Address (RA) ......................................................................................................................................9

Using Multiple WP2P Systems in the same area ..........................................................................................9

Operation Notes ............................................................................................................. 10

How do the modules communicate? ......................................................................................................... 10

STAT Indicator ........................................................................................................................................... 10

Link Status Indicator .................................................................................................................................. 10

MODE Pushbutton Switch ......................................................................................................................... 10

Technical Specifications .................................................................................................. 11

Warranty ........................................................................................................................ 12

Additional Information and Support ............................................................................... 12

QTech Data Systems Limited

Christchurch, New Zealand

The circuit details, software algorithms and know how disclosed in this document are proprietary to

QTech Data Systems Limited and shall remain the intellectual property of

QTech Data Systems Limited.

DISCLAIMER

The information in this document is subject to change without notice and does not represent a

commitment on any part of QTech Data Systems Limited. While the information contained herein is

assumed to be accurate, QTech Data Systems Limited assumes no responsibility

for any errors or omissions.

Contact QTech

QTech Data Systems Limited

12 Midas Place, Middleton

Christchurch 8024

New Zealand

Phone: +64-3-366-3713

Fax: +64-3-365-2815

Email: [email protected]z

Web: www.qtech.co.nz

Revision Details

1.1

February 2015

First Edition

1.2 May 2015 Minor error corrections

1.3 September 2019 Quick Start Guide updated to User Manual.

First issue to support Rev E hardware.

1.4 January 2020 Minor error corrections

1.5

March 2020

Addition of product codes in Technical Specification

1.6 August 2020 Update of product code

1.7 August 2020 Update current consumption & standby battery capacity notes

About This User Guide

This document provides assistance with the installation and operation of the QTech Wireless Point to Point

system. Included in this document is:

 How to install the WP2P modules

 WP2P and repeater operation

 Device Configuration

 Device Specifications

Other documents that should be read in conjunction with this document include:

 Installation Guide for the RSS01 solar charging environmental enclosure

Contact QTech for application notes, which can be obtained to provide guidance for specific configuration

scenarios, detailing the configuration workflow steps.

Product overview

Wireless Point to Point (WP2P) modules can be used to link electrical devices together in situations where the

physical separation or terrain between them would make direct wiring uneconomic or impractical.

The most basic WP2P system comprises two WP2P modules which have been configured as a pair. The modules

simply use their onboard radios to communicate their input state to the other module.

Each WP2P Low Power – DIGITAL module has three switch inputs and three relay outputs.

Features

 3 digital inputs

 3 digital outputs

 900 MHz (FSK modulation) short range radio up to approximately 400m for local network

communications. Extensible up to 4000m with high gain antenna configurations.

 Supports use of a single repeater for difficult terrain or range extension

 USB interface for diagnostics and firmware upgrades

 Solar power charging and battery operation (when supplied with QTech RSS01 Remote Solar Station

enclosure).

 Firmware is field upgradeable

Hardware

Feature Function

A Power input (nominally 12V DC)

USB

ype Mini B

for

configuration

and

irmware upgrade

C RF connector SMA

D I/O pairs (signal/ground)

- RLY1, RLY2, RLY3 relay contacts

- INP1, INP2, INP3 digital inputs

E Mode pushbutton

F LINK indicator LED (device link communications state)

STAT

ndicator

LED

(device status and power on indicator)

Digital I/O

The WP2P modules operate by copying the state of each switch input to the corresponding relay output on the

other WP2P module. When a switch input is closed, the relay output on the other module will close, and when

the switch is released, the relay will open again.

WP2P Module 1

Close switch contact on “INP1”

WP2P Module 2

“RLY1” closes operating light

The delay between an input activating and the corresponding output activating is normally less than 1 second

(see note at end).

Output Relays

The output state of each WP2P, on loss of communication between the pair, can be configured to either remain

in their previous state or to default to the open state (refer to Adjustments and Settings below).

Warning – Do not directly connect to 220V AC voltage. The New Zealand and

Australian wiring regulations require that any wiring in excess of 32 volts must be carried

out or be certified by a registered electrician. Consult your local electrical installer for

further guidance.

Switched Inputs

The inputs (Labelled INP1 INp2 and INP3) are electrically isolated, normally open inputs. They are connected to

suitable mechanical switches, contacts and other closure devices. An input is active or ON when the input switch

is closed and inactive or OFF when the input switch is open.

Warning – Only mechanical switches or mechanical closure devices should be

connected to the inputs. No external voltage or other electrical source is to be connected

to the inputs.

WP2P Repeater Module

A WP2P Repeater Module is available to increase the range and coverage of a WP2P system. It is used in

situations where the WP2P modules are a long way apart or there is an obstacle preventing line-of-sight between

them.

The WP2P Repeater Module operates by listening for complete and valid WP2P messages and then re-

transmitting them. It can be used with both WP2P Digital and WP2P Digital & Analogue type modules

simultaneously.

Please refer to the WP2P Repeater User Manual for further details.

Preparing for Installation

Line of site communications is necessary for optimum operation of the WP2P Digital & Analogue System. When

planning the installation consider the following and contact QTech for advice if necessary:

a) Consider using high gain antennas supplied by QTech for extended communications range and if

communication is unreliable due to weak signal strength.

b) Consider undertaking a field radio survey to ascertain antenna requirements and identify potential

radio channel interference by neighbouring transmitters.

c) If the device is to be mounted outdoors please use an environmentally protected enclosure.

d) Antenna elevation is important to obtain best performance. Ensure antennas are mounted in free

space, unobstructed by solid objects.

e) Consider the use of a QTech WP2P Repeater if the terrain does not permit clear line of sight.

f) Ensure the device is operating the latest firmware especially if the device has been in storage for some

time. If in doubt, contact QTech for advice.

g) Ensure that the power supply meets the correct specifications detailed herein.

Installation Notes

To comply with the New Zealand and Australian wiring regulations the WP2P cannot be connected to any

external Voltages exceeding 32 Volts AC or DC. To connect to or control higher Voltage equipment please consult

a Registered Electrician.

Mounting

For indoor mounting, the device should be mounted onto a flat surface using the Qty 4x M4 fixing holes at

~102mm x 50mm centres. Where the device is to be operated outside or in other adverse site conditions, then,

the device should be housed in an appropriate plastic enclosure.

For outdoor mounting, use the RSS01 solar charging environmental enclosure and follow the installation guide

for those products. Alternatively use a minimum of IP65 rated enclosure to suit the device and any additional

equipment to be housed, ensuring that all cables are glanded.

If the WP2P is to be enclosed in a metal cabinet, then an optional external antenna will be needed. Please

contact your equipment supplier for alternative antenna details and advice.

Avoid mounting in locations that may be subject to shock or vibration or temperature extremes.

Antenna

The device is a low power device that is designed specifically for operation in New Zealand and Australia. Each

unit is supplied with a stub antenna that will provide an operating range of 50 to 350 meters, dependent upon

terrain and obstacles such as trees and buildings. All radio systems work most reliably when the path between

the radios is clear “line of sight”. This needs to be considered when planning longer range systems.

Optional higher gain, long range antennas are available. Please contact QTech for details and advice.

For best performance mount the antenna up high and away from large objects.

Warning – Do not operate the device without an antenna attached. Do not substitute

antennas; use only those antennas recommended by your equipment supplier. Failing to

comply with these requirements can damage the device.

Never operate the devices in violation of RSM conditions. AS/NZS 4268:2008 specifies a

maximum EIRP of 1 watt.

Power Supply Notes

Power Supply

The WP2P can operate from a DC power supply of 6 – 24 Volts. The power connector is a 2.1mm DC Socket,

centre pin positive. The supply Voltage should be clean, continuous and transient free with an output of 6 - 24

Volts DC. The WP2P incorporates reverse and over Voltage protection.

Warning – Do NOT use Switch Mode Power Supplies (SMPS) with this product. The

DC power supply used for this product MUST have a grounded negative or be a “linear”

transformer-based plug pack. The reason is that the aerial, programming port and

external connections can provide exposed earth points and the SMPS can impose an AC

voltage on the DC ground, which can lead to damage. Suitable cost-effective plug packs

are available from QTech P/N PD5412, PD5413 & PD5414.

The WP2P is over Voltage protected to 30 Volt. Voltages greater than 28 Volts DC will blow the internal 500mA

fast blow fuse. Any solar/battery design needs to take this into account.

Internal Fuse

The device is protected by a 20mm x 5mm 500mA fast blow fuse. This is located on the internal circuit board.

To access the fuse, remove the top cover by carefully prizing it off its retaining dimples. Only replace the fuse

with an identical type, do not use alternatives. This fuse will blow if the power supply maximum voltage is

exceeded.

Current Consumption & Standby Battery Capacity

Solar systems utilising a solar charged battery backup facility are provided by the RSS01 or RSS02 product. For

systems where a custom solution is sought then the power consumption of the device can be used to calculate

the required standby battery capacity.

Average current consumption is ~6mA, which can be used as a guideline to assist with standby battery capacity

calculations.

Adjustments & Settings

There are two DIP switches labelled “OPTION” that allow configuration options for each WP2P to be set.

HOLD switch: Output Relay Configuration

 “ON” The outputs will retain (HOLD) their current state if the communication link between the WP2P

pair is lost.

 “OFF” The outputs will return to the open (OFF) state after 30seconds if the communication link

between the WP2P pair is lost.

Once the communication link is re-established the outputs will update to reflect the current input states of the

other module.

REPT switch: Repeater Configuration

 “ON” The WP2P is to be used with a repeater.

 “OFF” The WP2P is to be used without a repeater.

Note - Ensure that both W2P modules in a pair must be configured to have the same

REPT switch setting.

Radio Address (RA)

All WP2P systems have a unique Radio Address which is programmed into WP2P modules during manufacture

as security measure to prevent unauthorised access. The Radio Address is printed on the WP2P case represented

in the following format “192.168.0.0”.

Note - All WP2P modules in a given system must have the same first three numbers

in their Radio Address. The 4th number must be a sequential pair starting from the even

number e.g. 0.1.1.40 & 0.1.1.41.

The Radio Address must be stated for purchasing for WP2P module replacement.

Using Multiple WP2P Systems in the same area

There are ten individual frequency bands referred to as Channel Numbers allowing up to ten WP2P systems to

be used in the same area. The Channel Number is identified by the “#” on the packaging label; this example is

“Channel #1”.

Warning – Do not use the same channel for adjacent systems. For example, if you

currently use “#1” ensure that the adjacent system is “#3” etc.

Operation Notes

How do the modules communicate?

The WP2P modules use an event driven approach to communications. When the WP2P modules detect a change

of their input state, they will immediately transmit a message to the other module. There is however, a very

small chance that another radio device on that channel wanted to send a message at exactly the same time. This

will result in a “collision”, but the WP2P modules can detect this and use a collision avoidance scheme to

retransmit their messages.

STAT Indicator

The “STAT Indicator” indicates the current operational status of the device. It provides a heartbeat indication

that the device is operating ok or it displays a coded error indication for faults.

Faults may be latched so that the device remains indicating an error condition even if the fault has been

removed. In this way the device can be reviewed at a later time to show that a problem had occurred.

Pressing the mode switch briefly will clear the error condition indication on the STAT LED. If the fault is still

present then the STAT LED will redisplay the error condition.

Code Meaning

1 short flash, 2s interval Normal operating mode, Processor running, no active errors

2 short flashes, 2s interval Unspecified intermittent communications fault. A communications failure as

occurred recently.

~4 Short flashes on power up Indicates the device booting after power up or watchdog reset. LED should

usually then display normal operating mode indication.

Link Status Indicator

WP2P modules have a Link Status LED which is located next to the power connector.

This is to assist with site diagnostics and checking by indicating the state of the communications link between

pairs of WP2P modules.

The Link light functions as follows:

 OFF – Module failure, no power, fuse blown, circuit failure, etc.

 SLOW FLASH – Module functioning but no communication with its partner module.

 ON – Healthy wireless communications. The LED will briefly flicker each time it receives messages from

the other WP2P module.

Link Status indicator is based on the “keep-alive” message the WP2P modules send if it has been longer than 30

seconds since they last sent a message. Therefore, if one of the modules is turned off, it will take no longer than

30 seconds for the other module to detect that the link is down and begin flashing the Link Status LED. If the

connected I/O is changing more frequently than once every 30 seconds, then they don’t need to send keep-alive

messages.

MODE Pushbutton Switch

Pressing the mode pushbutton will clear the error condition indication on the STAT LED. If the fault is still present

then the STAT LED will redisplay the error condition.

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