Laxven Speed cum Energy Recorder is designed to provide a reliable and accurate record of
speed, time, distance and energy parameters of a EMU on which it is mounted. The system
can be powered from the DC voltage available in the EMU. The system is suitable for voltage
variations between 50 -140 V and is thus fit for application on all Indian Railway
EMU/DEMU/MEMUs. The system produces a record of speed Vs distance, Speed Vs
Time, Energy Vs distance, Energy Vs Time etc. traveled by the EMU on a Non Volatile
Memory at two places for higher redundancy for any post-incident analysis. The system also
provides digital display of various parameters and sounds audio-visual alarms on exceeding
set speed limits and certain malfunctions of the system. The system is provided with the LCD
display and alphanumeric keypad for entering the driver and EMU parameters. There are few
warning LED’s along with audible alarm, which alert the driver on deviating some of the
specified parameters.
Laxven is one of the leading manufacturers of the microcontroller based Speed cum Energy
Recorder for Indian Railways. Laxven has speed cum energy recorder for EMU (Model:
LAX2000E-EMU) to meet the RDSO specifications. Laxven has also developed the test
equipment and calibration tools to calibrate the Microcontroller based speed cum energy
recorders at the workshop as well as in the EMU.
LAX2000E-EMU is a Microcontroller based speed cum Energy Recorder cum Indicator unit
with the memory capacity of 8 Hours of 1 sec data and 45 days of 20 sec interval data in a
circular form first – in – first out on a PCMCIA Card. The data can be downloaded through a
RS 232 serial port or from a memory reader unit.
Highly Accurate, stable and reliable Microcontroller based System
Less Maintenance and long reliability
Self diagnostic and fail safe Microcontroller based System
More than 1000 systems working in Indian Railways
Power supply can work from 50V to 140V DC and can be used on
any Indian railway EMU. (24V DC supplied as per customer
requirement)
Switch mode power supply provided with built in protection for
Reverse Polarity, Input Over Voltage, Over Current and Short
Circuit. High capacity filters provided for Surge/Transient
suppression and EMI/EMC suppression.
Data is recorded in a non-volatile memory at two places for
redundancy.
Industrial standard PCMCIA card used for memory recording
8 hours data recording @ 1 second interval and 45 days recording
@ 20 second interval.
All the inputs, outputs, internal faults are recorded in the data with
date and time stamp for post analysis.
Auto change over redundant sensors for speed measurement
Seven digit odometer with a resolution of 1 km/h
Eight digit Energy meter with a resolution of 1KWh.
Highly accurate 0.5 class Energy measurement using Industry
standard Energy ASIC.
Voltage, current, power factor and frequency measurement.
User configurable parameter entry through keypad.
A 16X2 alpha numeric LCD with backlit provided for display of
various parameters
MS circular connectors provided for higher reliability
Available in Desktop and wall mount versions.
Wheel diameter adjustment through keypad (resolution of 1mm)
Two digital inputs provided for dynamic braking and coasting.
Provision of additional digital inputs/outputs can be incorporated as
per customer requirement
Downloading of data using Memory reader unit and RS232 port.
User friendly and powerful Analysis software for post analysis of
data
Recorded data can be viewed in graphical or digital form using
Analysis software
Graphical data can be viewed as Speed Vs Distance, Speed Vs
Time, Energy Vs Time and Energy Vs Distance etc.
Simultaneous viewing of Voltage, current and Energy graphs.
Driver wise, Train wise, distance wise bench mark report
generation/analysis etc. provided in the software.
Over speeding analysis provided in analysis software.
Downloaded data can be converted to Excel file format
Power Supply voltage
:
50 to 140 V DC from EMU battery (24 VDC available as
per customer requirement)
Power
:
Less than 12 Watts
Accuracy of Speed
:
0.8 % of the full scale
Speed Dial
:
0-120 Km/h or as per customer requirement in 240 degrees
Odometer
:
7 digit with 1 km resolution. Accuracy: 0.1 %
Speed Measurement
:
Through Auto change over redundant speed sensors
Energy Accuracy
:
0.5 Class using Industry Standard Energy ASIC
Energy counter
:
8 digit Energy meter with 1KWh resolution.
Recording System
:
At two places using Industrial grade compact flash card
Resolution of
Recording
:
1 second for fine data for the last 8 hours of run and 20 seconds for coarse data for the last 45 days (run and halt)
Display
:
2 x 16 character LCD display with backlit control
Display parameters
:
Time, Date, Distance, Energy, Voltage, Current, Power Factor, Dynamic braking, Coasting parameters etc.
Temperature range
:
-5 deg. C to + 80 deg. C
Data Entry
:
Through 16 key rugged tactile alpha numeric keypad
Dial Illumination
:
Adjustable through Keypad. 0 to 100 %
Wheel diameter
setting
:
Adjustable through keypad. 640mm – 1220 mm or as per
customer requirement
Digital Inputs
:
2 Numbers of 110V DC digital input (Optically isolated and
reverse polarity protected). Can be expanded as per
customer requirement (Optional)
Digital Outputs
:
Can be provided as per customer requirement.(optional)
Downloading of
Recorded Data
:
Data can be downloaded to PC using RS232
or Memory reader unit
