Receiver Installation Guide
Revision History
Revision | Date | Details |
1.0 | 1-May-2015 | Initial draft |
1.1 | 27-May-2016 | Updated document template |
1.2 | 12-Feb-2019 | Updated receiver mechanical diagrams to show new mounting hole dimensions |
1.3 | 1-May-2019 | Added Cavity Filter install instructions. |
1.3.1 | 11 June 2019 | Added Dimensions and weight text box |
Scope
This document provides guidelines for electrical contractors installing Taggle Systems revision 3 LPWA receivers.
Equipment Description
Taggle Systems has developed a proprietary Low Power Wide Area (LPWA) radio system for use in a variety of telemetry and location applications including Automatic Meter Reading (AMR), environmental monitoring, asset location and security monitoring.
The LPWA receiver is used to collect and process radio transmissions from Taggle Systems transmit devices, and forward the received messages, typically via a cellular modem connection, to Taggle’s central servers for further processing and despatch to the end customer.
The receiver is a standalone unit housed in a powder coated IP65 enclosure suitable for both indoor and outdoor use. The receiver requires a high gain receive antenna, typically a 9-14dBi gain omni –directional or sector antenna, which is usually mounted on the top of high assets such as water reservoirs, tall building roof tops or radio transmission towers. The receiver is installed as close as practicable to the receive antenna, either indoors in an adjacent equipment hut or plant room, or outdoors on the same structure that the receive antenna mast is attached to.
Advise your Taggle representative at least 24 hours prior to any proposed receiver installations to ensure our Network Team is ready to run diagnostics and help commission your Receiver. Failure to do so may require costly re-visits to remediate faulty installations.
Site Selection
The following criteria should be used to select the best site to install the receiver:
The receiver should be mounted as close as possible to the receive antenna to minimise the length of the receiver antenna cable run. The antenna cable length should be kept below 15m if possible, and should not exceed 20m unless absolutely necessary.
Cable runs greater than 20m must use higher grade cable such as LDF4-50
Receivers may require servicing in the future; hence avoid deploying in areas with costly or very restricted access.
Indoor locations with sufficient GPS signal strength (e.g. near a window) are preferable to outdoor locations.
Does not include cabinets. If required to install in cabinets, sufficient ventilation must be available or the receiver will overheat.
Outdoor locations facing East or South are preferable to locations facing North or West, as this will minimise the risk of excessive solar heat loading.
Secure sites behind locked fences or doors are preferable to publicly accessible sites to minimise the risk of tampering and vandalism.
Enclosure Mounting
The dimensions of the receiver are shown below.
Note: From receivers with serial number R-388 onwards, the mounting footprint was increased from 315x315mm to 325x325mm to make the chassis easier to install. If a Version 1 chassis is being replaced with a Version 2 chassis and the installer wishes to use the original mounting points, the mounting brackets attaching the heat shields to the receiver enclosures will need to be swapped.
Wall Mounting
The receiver has four mounting brackets. On masonry walls secure the receiver with four M10x40mm dyna-bolts using the large holes in the brackets. On timber stud walls secure the receiver with four M5x50mm timber screws using the small holes in the brackets.
Pole Mounting
The receiver can be supplied with optional pole mounting rails as shown in Figure 4 below:
Attach the pole mount rails with the bolts and spacers providers. The receiver can then be secured directly to the pole using 13mm stainless steel Band-It straps.
Power Connection
The receiver requires 240V AC power. The power consumption of the receiver is approximately 30W.
For indoor deployment it is recommended that a dedicated GPO be installed adjacent to the receiver and a 1.8m power cord be fitted to the receiver power supply. The power cord should be routed through the right hand hole in the base of the receiver using a 25mm cable gland.
For outdoor deployment a fixed power connection run in 25mm conduit is recommended. The conduit should be terminated in the right hand hole in the base of the receiver using a 25mm conduit gland. The power circuit should be run to a dedicated circuit breaker on the local distribution board if possible, otherwise a separate isolating switch should be installed adjacent to the receiver to allow the receiver to be safely disconnected without interrupting the power to other equipment.
Connection of the power circuit to the receiver power supply is shown in Figure 5 below.
Antenna Connections
The antenna connections to the receiver are housed in the cable management box on the bottom of receiver as shown in Figure 6 below. To access the cable management box remove the two hex bolts in the bottom of the main receiver enclosure and slide the front cover down then outwards.
Receive Antenna
The receive antenna should be connected to the receiver using LMR400 or CNT400 coaxial cable. The coaxial cable can be routed in 25mm conduit if required. Secure the cable into the left hand hole in the base of the box using a 25mm cable gland or conduit gland as required. The coaxial cable should be terminated with a crimped N-Type plug suitable for LMR/CNT400 cable (RFI part number N-201 or equivalent), and connected to the input of the Gas Discharge Tube (GDT) lightning suppressor.
Note: the 25mm gland must be fitted on the coaxial cable BEFORE the N-Type plug, as the plug will only fit through the gland nut, not the gland itself.
The GDT should be separately earthed using a dedicated 2.5mm earth wire connected to the crimp connector on the GDT housing. The earth wire should be routed to the installation’s local earth bonding stake or switchboard main earth link.
GPS Antenna
The receiver has an integrated GPS/Cellular puck style antenna mounted on the top of the enclosure heat shield.
For some indoor installations there may be insufficient GPS signal strength to obtain GPS lock and an external GPS antenna will be required. The external GPS antenna should be mounted outdoors. The GPS coaxial cable can be routed in 20mm conduit if required. Secure the cable to the receiver using a 20mm cable gland or conduit gland installed in the hole in the base of the receiver directly below the GPS antenna connector. Disconnect the GPS puck antenna from the GPS antenna input as shown in Figure 6 above and connect the external antenna in its place.
Cellular Antenna
For some installations there may be insufficient cellular signal strength to maintain a reliable network connection and an external cellular antenna will be required. The external cellular antenna should generally be mounted outdoors. The cellular coaxial cable can be routed in 20mm conduit if required. Secure the cable to the receiver using a 20mm cable or conduit gland installed in the hole in the base of the receiver directly below the cellular antenna connector. Disconnect the cellular puck antenna from the cellular antenna input as shown in Figure 6 above and connect the external antenna in its place.
Commissioning
Once the power and antennas are connected turn the receiver on by switching the internal power switch next to the orange power supply to the up position.
After 4 seconds the Single Board Computer (SBC) and Base Band Processor (BBP) modules should power up and the SBC_POWER_ON and BBP_POWER_ON LEDs will illuminate. The SBC_FPGA_OK LED should illuminate about 1 second later. The receiver GPS unit can take up to five minutes to acquire satellite synchronisation, at which point the GPS_TIME_PULSE LED will begin flashing.
Once the SBC has fully booted and established a cellular connection (which can take up to 5 minutes) the receiver Radio Frequency Module (RFM) will be enabled and the RFM_POWER_ON and RFM_PLL_LOCKED LEDS will illuminate.
At this point, contact the Taggle Network Operation Centre to check that the receiver is online and functioning correctly. +61 2 8999 1919
They may advise at this stage that a Cavity Filter is required to be retrofitted if interference is observed
Security
The receiver enclosure should be locked by installing a padlock on the door handle in any situation where there is a possibility of unauthorised access. The padlock should be a 50mm size combination type with an 8mm shackle, and must be weatherproof for outdoor installations. Recommended padlocks are:
Squire Model CP50
Master Lock Model 178D