RLC - FEC Heliports

FEC RLC Technical Description
Version 1.0
Date: 24 February 2016
FEC Remote Lighting Controller (RLC) Version 2
Type: FEC - HP0656
Technical Description
FEC RLC V2
Issue: 1.0
24th February 2016
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FEC RLC Technical Description
Version 1.0
Date: 24 February 2016
Document Revision Sheet
Issue
1.0
Date
24/02/2016
Changes
New Document
The RLC Architecture
Note that this document should be read in conjunction with:
1) The RLC User Manual
2) RLC Block Diagram, and
3) RLC Schematics
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Contents
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
RLC Capabilities ................................................................................ 4
The RLC System ................................................................................ 5
The RLC Enclosure ............................................................................ 6
Enclosure Base .................................................................................. 7
Enclosure Front .................................................................................. 9
Main System .................................................................................... 10
Main Circuit Board............................................................................ 11
Central Processing Unit and Sensors .............................................. 12
LCD & Keypad Interface .................................................................. 15
UHF Transceiver – Zulu Module ...................................................... 16
Operation ......................................................................................... 17
Summary Specification .................................................................... 19
Electrical Specification (Mains Power Supply Unit) .......................... 20
Appendix A – Microchip 47J53 Block Diagram................................. 21
Appendix B - UHF Radio Modem Specification ................................ 22
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Remote Lighting Controller V2
Operational Overview
The Remote Lighting Controller (RLC) offers a unique combination of both VHF and GSM-SMS control
and monitoring of helipad lights and peripheral equipment. The unit is available as VHF only, SMS only
and combined VHF/SMS (standard). Options include a Remote/Mimic station to control or simply
monitor the system and a Remote Switching Controller (RSC).
Part Numbers
HP0656
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Standard full VHF & GSM equipped version
HP0657
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VHF only version
HP0658
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GSM only version
This document describes the fully configured version (HP0656) irrelevant sections can be ignored for
the variants.
1.
RLC Capabilities
FEC’s Remote Lighting Controller Version 2 (RLC V2) is an all new, fully digital design that combines
ease of installation and use with sophisticated yet simple and secure configuration via the IP65 rated
keypad and LCD display or via SMS.
Key Features
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Traditional VHF Pilot Controlled Lighting (PLC) configuration
Simple 25kHz/8.33kHz frequency setting through front panel – no fiddly switches
Defined number of presses to activate Channels 1, 2 or 3
Programmable timeout for VHF, keypad and GSM activation
Each channel has fully independent time-out (10 seconds to 60 minutes)
VHF operation can be remotely enabled/disabled for extra security
FCC/EU approved, Integrated tri-band GSM Telemetry Engine for SMS control
Secure PIN code protected SMS commands to monitor and control your installation
Secure SMS status reporting – check out your installation before taking off
Remotely activate Channels 1, 2 or 3 and have the status sent straight back to your mobile
3 Status relay contact outputs for BMS interface
Auxiliary input for switching or BMS control of VHF receiver
Three 20 Amp heavy duty relays in the box – Enables linked peripheral shutdown
Local and remote test and diagnostics integrated into the unit
Very low power consumption – Approx. 3W (idle) and less than 30W max. (including internal winter
heater)
 Operates from 110-240V AC 50-60Hz or 12V DC (ideal for solar and batteries)
 Weather station interface for meteorological information from your helipad
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2.
The RLC System
With the exception of the PSU, Relays and PSU & Relay Interface PCB, the main system PCB and all
of the subsystems and radios are accommodated within the LCD and Keypad enclosure.
Subsequent sections cover the function of each element shown in the diagram above.
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3.
The RLC Enclosure
RLCs are typically deployed in external environments so have been designed to withstand these
conditions. With the exception of the external power source, aerials and circuit connections, RLCs are
completely self-contained.
The enclosure is manufactured from ABS and is IP65 rated and all metal fittings are either of stainless
steel or galvanised steel.
The Mains 12V Power Supply Unit (PSU), PSU and Relay Interface PCB, Power Relays and mains
connectors are all mounted on a DIN rail in the bottom of the base of the enclosure (right side of photo
above).
The main processor, radios, LCD display and keypad are all mounted inside the LCD and Keypad
Enclosure (left side of photo above). This is joined to the PSU and Relay Interface PCB via a 9 way
ribbon cable.
VHF, GSM and UHF (if this option is fitted) aerial cables are brought out to the base of the unit where
the 3 mains cable glands and 2 signal cable glands (Meteo and BMS) are:
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4.
Enclosure Base
The enclosure base includes:
1)
2)
3)
4)
5)
Mains connectors (and line fuse)
12V DC 30W mains PSU
3 off 20A Power Relays
PSU and Relay Interface PCB
Interface to the Main System including: 12V DC in, 5V DC out, relay switching and secondary
current sensing.
Optionally, the PSU and Relay Interface PCB can be fitted with 3 off secondary current sensors for
measuring the AC current in the switched mains secondary circuits. These readings are used to
determine fault conditions.
The PSU and Relay Interface PCB has provision for connecting an external 12V battery enabling the
system to be independent of a mains supply. The battery can be charged from, for example, a solar
cell.
The physical layout of the base is shown over.
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The arrangement of the base units is shown below (V4 Enclosure).
12V DC 30W
Mains PSU
100-240VAC
3 off 20A Relays:
1NO, 1NC
PSU and Relay
Interface Board
GSM connector
3 Circuit Current
Sensors
(optional)
VHF BNC
connector
Position of
optional UHF
connector
DIN Rail mounted
connector strips.
Customers may
add additional
items
Meteorological
and Aux.
connectors
3 Mains In/Out
cable glands
As shipped both of the signal cable glands (Meteo and Aux./BMS) and one of the mains cable glands
are blanked off to maintain the IP integrity of the
enclosure.
The enclosure base is mounted with fixing screws
In the corners of the base outside of the sealing
gasket (picture right)
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5.
Enclosure Front
The keypad & LCD enclosure mounted in the enclosure front contains the Main System,
comprising: System CPU, LCD & Keypad and sub-processor, VHF Receiver, GSM and UHF
Transceivers, Meteorological and BMS interfaces and a Real Time Clock.
VHF Connector
VHF Status
LEDs
Meteorological
System interface
BMS/Aux
Connector
Connection to
PSU and Relay
Interface
GSM connector
UHF Connector
GSM Status
LEDs
Power & Heater
Status LEDs
SIM Card access
cover
USB Boot-loader
button and
Connector
Both the Meteo and BMS interface connectors are fitted as standard but as they are user options, the
systems are shipped with them blanked off (as above).
The UHF link is also an option and only supplied if specified at the time of order.
There is an access cover over the SIM on the GSM module which is the only user accessible part of
the system.
There are no user serviceable parts in the main system enclosure.
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6.
Main System
Note: VHF and GSM Aerial connections are not shown on the above
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7.
Main Circuit Board
The main circuit board is a double sided, through-hole plated, 1.6mm FR4 construction with a white
solder resist, black silk screen and ENIG finish. The PCB is RoHS and LR S-94V0 compliant.
The circuit board performs a number of functions:
1) Provides the usual electrical connections
2) Acts as the main interconnect for peripherals, and
3) Provides enclosure heating through a surface mount heater array
All components and assembly are lead-free RoHS compliant.
The VHF and GSM modules plug directly into the main CPU board and are secured by screws into
captive threaded pillars. This allows for field swap-out or upgrade.
To maintain the operational integrity of the main system should a peripheral fail, self-resetting fuses are
included in all of the power feed lines.
Meteo Fuses
VHF Connector
VHF Receiver
BMS Connector
Meteorological
System interface
Clock/Calendar
CPU
BMS Relays
Connection to
PSU and Relay
Interface
GSM Connector
System PSU
And LEDs
GSM Module
SIM Card
USB Boot-loader
button and
Connector
LCD & Keypad
Connector
(under)
Clock Battery
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8.
Central Processing Unit and Sensors
Hardware
The operation of the RLC is under the control of a Microchip PIC47J53 processor.
The processor has a 128k code space and 16k of RAM and runs at a clock speed of 48MHz (internally
generated). The clock is shared with the USB interface.
Configuration information for the device is held at the top of code space and is never re-written.
A manufacturer’s Block Diagram of the processor is shown in Appendix A.
Software
The software controlling the CPU is written in a structured and compiled Basic with small sections of
assembler where required.
There are two parts to the software:
1) Resident Bootloader, and
2) The main operational code
The bootloader is permanently installed in the 1st 4k of code space and is never re-written.
The purpose of the bootloader is to enable the main code to be loaded from a PC via a standard USB
interface. This enables field upgrades or special versions of code to be loaded by users without any
special equipment or knowledge.
The CPU performs the following functions:
1) Basic background functions of the unit, including:
a. Monitoring supply voltage and enclosure temperature
b. Running the internal heater as required
c. Re-loading new software
d. Maintaining a log of running and max/min statistics for diagnostics
2) Managing access to the system setup and configuration details:
a. Setting up and testing the radios
b. Maintaining the GSM numbers for Operator, Agency and Mimic
c. Setting up and testing the peripheral interfaces
d. Setting up the relay mapping, timeout and logic of the three channels
e. Setting operational parameters and units (e.g. reporting units of the meteorological
reports)
f. Maintaining the security access PIN codes
3) Managing the real-time activation of the system:
a. Continually monitoring the VHF and GSM radios and keypad for activations
b. Checking the validity of the user requested activations
c. Performing the activation and circuit testing of the demanded activity
d. Reporting the changed status and (where fitted) meteorological data
e. Managing the differential time-out of the channels
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System & Sub-Systems Functions
System Power Supplies
The main CPU board includes sub power supplies for VCC (5.0V) and VDD (3.3V) and a trickle charger
for the RTC battery back-up.
CPU
On start-up the CPU reads the boot-loader switch and, if active, enters the boot-loader mode. In this
mode new software can be loaded from a PC via the USB port.
If the boot-loader switch is not active then the main operational code is run. Configuration settings are
retrieved from non-volatile memory and the system is configured as required and enters normal
operational mode waiting for activation.
Building Management System (BMS) Interface
There are three small signal, single pole, normally open relays used to signal faults in their respective
main relay circuits. If, as part of the channel setting, a fault is detected then the relevant relay is closed.
The interface also includes an (Aux)iliary digital input line. This line, which is impedance and voltage
limit protected, is monitored by the host CPU and, under software configuration, can be used to either
provide an input to trigger channels or as a system disable input (most often used by a BMS system to
disable the system in manned, operational hours at an aerodrome).
Real Time Clock (RTC)
There are two real time clocks in the RLC, the master RTC on the main CPU and a second on the GSM
module.
The master RTC is calibrated and set as part of the test and setup process at the time of manufacture.
The RTC has a battery back-up supply which is charged all the time the RLC is powered.
The RTC records the time/date that power is lost and restored and, if the Operator number is active,
sends and SMS reporting these times.
On power up the master RTC updates the time and date of the GSM RTC.
VHF Receiver
The VHF receiver is a fully synthesised digital design specifically designed to operate in the 118137MHz Airband.
The receiver is controlled by an Atmel processor which configures the synthesised receiver and
provides the communication and status interface to the main CPU.
There are two types of interface to the host CPU; I2C and dedicated logic lines. Receiver settings are
made from the CPU via the I2C bus interface. The dedicated logic lines include the Power Select and
Carrier Detect lines.
The most critical settings include the frequency the receiver is to be tuned to and the detected signal
level at which the dedicated Carrier Detect line will be made active.
All of the receiver characteristics (including for example the bandwidth) have been defined at the
design stage and incorporated into the processor’s software. These are not accessible.
Once the receiver has been configured and made active the desired frequency is constantly monitored
and as the signal level exceeds the set threshold the Carrier Detect line made active.
Signal filtering and detector timing is performed in software by the main CPU.
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Meteorological System Interface
The RLC is designed to provide power to and accept a serial data stream from a Gill Instruments
MetPak meteorological reading system. The serial interface is RS-243.
GSM Module
A tri-band GSM transceiver module and interface is mounted on the main CPU. The module contains
its own power supply unit (derived from the main 12V system power), GSM radio module, CPU, Real
Time Clock and RS-232 interface to the main host.
The main CPU board has full power feed control to the GSM module (to allow power cycling if required)
and an RS-232 interface. The GSM module operates autonomously – on power-up it logs on to the
GSM network determined by the SIM used. The local CPU continuously monitors network connection
and if it is lost, automatically re-tries for connection.
There is an agreed, fixed, serial protocol between the GSM and host CPUs enabling messages to be
sent and received and control to be maintained by the host.
All SMS text messages received by the module have the time and date received appended to them and
are then passed to the host CPU which receives them into an interrupt driven buffer for processing. All
messages sent from the host to the GSM module are buffered by the GSM module and have the time
and date of transmission appended to them as they are sent.
Heater
To ensure that the system is always kept above 0C, the temperature of the main CPU PCB is monitored
and used by the CPU to control an array of power resistors.
Interface to the LCD & Keypad Sub-System
The LCD and keypad interface board is powered from the VCC (5.0V) supply. The communication is
over the I2C serial interface. The main CPU acts as bus master and the LCD & keypad processor as
slave.
The physical interface is via an RJ11 6/6 cable and connectors.
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9.
LCD & Keypad Interface
The LCD & keypad Interface comprises a CPU (PIC18F5K20) and optionally a UHF (868MHz EU or
915MHz USA) ‘Zulu’ transceiver module. The power from and data interface to the LCD & Keypad
Interface is via the RJ11/I2C bus. Both the LCD and keypad interfaces are conventional parallel ports
and communication to the Zulu module is via a serial interface.
The LCD & keypad CPU performs all of the tasks required to manage the formatting of the
screen, reading the keypad and acts as a translation between the CPU/I2C interface and the
Zulu/RS232 interface.
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10.
UHF Transceiver – Zulu Module
The LCD & Keypad Interface is fitted with an RF Solutions Zulu 2 UHF transceiver operating in either
the 868MHz (European) or 915MHz (USA) license exempt bands.
The transceiver includes a central processor and all of the circuitry required for a complete wireless
modem. The transceivers are pre-set at the factory to either of the two frequency bands and cannot be
changed after installation.
The transceivers need to operate with a ‘paired’ device (usually HEMS-Star battery portable helipad
lights). Pairing means that both devices have been set up exactly the same (e.g. same frequency) and
that their unique addresses are complimentary.
All FEC controlling devices have the address of FEC000. All FEC controlled devices have the address
of FEC001. Arbitration of commands is carried out at a higher, secured level (see later wireless
command section)
The modules act in two modes:
1) Normal – data is sent between two ‘paired’ modems and their hosts, and
2) AT – The configuration mode which enables certain parameters to be set (e.g. baud rate)
The Normal mode of operation is the default state.
Entering the AT mode is only possible by the OEM under PIN controlled conditions. Users of the
equipment have no way of accessing the AT mode. The antenna is a externally mounted whip.
For 915MHz FCC systems, both the RLC and antenna cable are supplied with reverse SMA
connectors to ensure matching of the antenna and RLC.
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11.
Operation
The RLC exists in one of two states:
1) Setup
2) Normal Operation
Setup
The Setup state is entered via the keypad and is PIN code protected. There is a hierarchical level of
access to the Setup state:
User
Operator
FEC
OEM
None
The basic management level of privilege allowing configuration of a wide range of
parameters
As above plus the ability to reset the Operator PIN
As above plus the ability to reset the FEC PIN and perform a number of configuration
tasks (e.g. set the unit’s serial number) and diagnostics
A number of management functions can also be performed via SMS (controlled by PIN code).
As a safety feature, 10 minutes after Setup mode is entered, irrespective of activity, the system will
automatically quit Setup and resume Normal Operation in the last state set. This is to ensure that the
system is not accidentally left out of operation.
Normal Operation
In Normal Operation the system is in an endless loop checking for activations and/or time-outs of
previously activated channels or a request to enter set-up mode. The system will also continue to
perform background house-keeping tasks (e.g. the heater).
While in this mode the system will also read and respond to SMS commands, either by setting or unsetting channels as requested or by providing status information or carrying out certain management
tasks (see user manual for full description).
Channel Activation
When an activation command is received it is first checked for validity (keypad and SMS only) to
confirm a valid User Type and related PIN code. If the command is valid the following actions are
taken:
Perform the Command – Set the channel active and the timer running as defined in the
configuration tables previously set by the Operator,
Test the Outcome – Measure that the system has responded correctly to command (this is
achieved by measuring at least measuring the current in the power relay primaries and, if fitted,
by validating the current flowing in the circuit secondary and comparing to stored results), and
Reporting the Result Confirm the result, including appending the weather information if the optional MetPak is fitted,
via SMS to the Operator, User (if set via SMS), Mimic Panel and Agency numbers if defined.
If an error is detected this is also confirmed by making the relevant BMS relay active.
Channel De-activation
Channels are normally de-activated when the timer for each channel times out and can also be
deactivated by SMS (on an individual channel basis), via the Aux input (if that has been used to set
channels) or via the keypad (de-activates all channels).
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Main Operational Loop
The basic flow-chart of the Normal Operational loop is shown below.
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12. Summary Specification
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Controller modes:
VHF Frequency Range:
Channel spacing (V2 Receiver):
VHF Sensitivity:
Frequency selection:
VHF aerial:
GSM Bands:
Network:
Tariff:
GSM aerial:
UHF aerial (If UHF option selected):
BMS Output
BMS/Aux input
Degree of protection:
LCD and Keypad protection:
Unit operating temperature:
System Storage temperature:
Compliance:
Operating voltage (AC):
Electrical Protection (RLC not circuits)
Operating voltage (DC):
Max voltage range (DC):
Power (standby – LCD Backlight On):
Power (standby – LCD Backlight Off):
Power (all relays active):
Power (GSM transmitting):
Max power consumption:
Relay capacity:
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Cable Entry (Mains):
Cable entry (MetPak) V4 Enclosure:
Cable entry (Aux/BMS) V4 Enclosure:
Monitoring (Option)
Size:
 Enclosure material:
 Weight (with shipping packaging):
4 - VHF PCL, GSM/SMS, Keypad or Aux
118 to 137 MHz
8.33kHz
> -90dBm
Any channel within the Air Band
BNC - External remote mounted (Not supplied)
Tri-Band
Operators choice subject to coverage
Account (recommended) or pre-pay
SMA Connector for remote mounted aerial (supplied)
SMA Connector for remote mounted aerial (supplied)
3 relay (normally open – Max 5W/24V DC/0.25A peak)
1 (high impedance 12V output – ground to operate)
IP65 (general)
IP65 and ‘vandal resistant’
-25oC to +50oC
-25oC to +80oC
ROHC Compliant except exempt items (radios)
100-240V AC 50-60Hz
5A 20mm Fuse
12V DC
10V – 15V DC
12V DC: 3 watts (approx.)
240V AC: 9.10W
12V DC: 2.25 watts (approx.) 240V AC: 8.33W
12V DC: 6.25 watts (approx.) 240V AC: 11.55W
12V DC: 10 watts (maximum)
DC/AC: 30 watts (including optional winter heater)
3 off 20A Relays (1 NO, 1NC)
DIN rail mounting
3 off M16 Cable glands – 10mm max cable diameter
M12 Cable gland
M12 Cable gland
Measurement of Secondary Circuit Current
Height - 11” (280mm)
Depth - 6.5” (165mm)
Width - 7” (180mm)
ABS
2.5kg 5.5lbs (3.9kg 8.6lbs)
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13.
Electrical Specification (Mains Power Supply Unit)
The Mains PSU fitted is a 30 watt unit identified on the PSU enclosure.
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Manufacturer: Meanwell
Manufacturers Model No.: DR-30-12
Universal AC input/Full range 100-240V AC 50-60 Hz
Input current: 1.1A
Protections: Short circuit/Over load/Over voltage
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
Isolation class
LED indicator for power on
100% full load burn-in test
Approvals:
All specifications are manufacturer’s data
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14.
Appendix A – Microchip 47J53 Block Diagram
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15.
Appendix B - UHF Radio Modem Specification
The Modem has the following specification.
Parameter
Value
UK/EU/ROW 868 MHz
USAA 915MHz
Manufacturer:
RF Solutions Ltd. UK
RF Solutions Ltd. UK
Modem Type:
ZULU-2-M868-SO
ZULU-2-M915-SO
Nominal Frequency Band:
868MHz
915MHz
Frequency Options:
868.400, 868.900, 869.450, 869.600 and
869.800 MHz
915.000, 915.100, 915.200,
915.300MHz
Frequency Set to:
869.450MHz
915.200MHz
Bandwidth per Channel:
100kHz
100kHz
Deviation:
45kHz
45kHz
Power Output Set
100mW (20dBm)
0.74mW (-1.3dBm)
Maximum RF Input Power
+10dBm
+10dBm
Receiver sensitivity:
Max –121dBm (-102dBm (Max) to 109dBM (Min) at 56kbps)
Max –121dBm (-102dBm (Max) to 109dBM (Min) at 56kbps)
RLC & PC Controller
Range:
Up to 2km depending on RLC aerial
positioning and terrain
TBC
Addressing:
24bit secure data protocol
24bit secure data protocol
Addressing Schema:
One to Many
One to Many
RF Baud Rate:
56kbps
56kbps
Modem Data Rate:
19.2kbps
19.2kbps
Modulation:
Frequency Shift Keying (FSK)
Frequency Shift Keying (FSK)
Operating Temperature:
-40C to +85C
-40C to +85C
Compliance:
CE (see table below)
Compliance for FCC is to 47 CFR part
15.249
RF Channel Selection
The EU standard sets maximum power transmission limits dependent on frequency, bandwidth
and application. A rough guidance applicable to the ZULU channel numbers is given below
Channel Number
Frequency Centre (MHz)
EU Power Allowance
mW/dBm
0
868.400
25/14
1
868.900
25/14
2
869.450
100/20
3
869.600
100/20
4
869.800
25/14
Notes
Applicable standard EN300-220
All specifications are manufacturer’s data
End of Document
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