Stid L51 Operating and maintenance manual


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 1 / 9
OVERVIEW
Characteristics:
Power supply: ................ 12 VDC (12 min – 15 max)
Consumption: .................250 to 700mA depending on calibration
Communication: ............. RS485 addressable
Pin out: ........................... 4 points (located on the RS485 converter)
+ 2 points for LED color commands
Reading distance:
Credit card tags (CCT type): max. 50 cm (*)
High distance tags (TVL type): max. 80 cm (*)
(*) Performance for a non perturbed environment.
Mechanic:
Antenna: Dimensions : 408 x 288 mm – Thickness 13 mm
Electronic case: IP67 waterproof aluminum case. 171 x 121
x 55 mm. Integrated behind the antenna.
Features
•Manual calibration to get the best possible performances according to the reader environment.
•Possible to add an extra LED and buzzer to give detection / reading information.
¾ face
Side view
Rear view


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 2 / 9
Recommendations / Limits
•If 2 (or more) readers are installed too close, it can cause a coupling. The readers will not be able to
read tags or a tag will be read by each reader at the same time.
•Do not install the reader near to a closed conductor circuit.
•Do not install the reader on a metallic support
•Do not install the reader close to a metallic ground. In this case, respect the minimum distance,
between the antenna and the ground, which are 20 cm with the side of the antenna and 50 cm with
the back of the antenna.
•Do not forget to connect the 0V to a clean ground.
(See the installation examples at the end of this document)
Unfavorable cases
Avoid installing the reader close to perturbing electromagnetic field like:
•Informatics data transmission cables
•Energy transmission cables
•Screen display
•Equipment with no EMC conformity
Wiring / Calibration
Wiring
Connect the power supply (0V, +12V) and the bus data lines (L+ / L-) to the interface.
The maximum distance between the host and the reader is 1000m.
Recommended cables:
1 pair 6/10°of 98,43 ft max (30 m) OR 1 pair 9/10°of 165.05 ft max (50 m)
2 pairs 6/10°of 196.86 ft max (60 m) 2 pairs 9/10°of 328.10 ft max (100 m)
3 pairs 6/10°of 328.10 ft max (100 m)
Electronic equipment view
Fig 1
Connect your
power supply and
data lines here


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 3 / 9
Main board view
Fig 2
First use
•Fit the reader at the desired place
•First connect only the power supply
•Present a tag to the reader
•Check the good detection (if the distance is not correct, modify the calibration)
To control the detection, use the LED on the main board. You can verify that data are sent from the
main board to the interface with the LED on the interface.
•Connect the data lines (L+ / L-)
Calibration
The reader is calibrated before delivering, but it is possible that the reader need to be re-calibrated to adjust
to its environment.
•Connect a voltmeter (DC) to check the consumption (see the main board view for the voltmeter
connection). Consumption = measure x 10
•Usually, you get the best possible performances when the reader’s consumption is maximum
(usually maximum is around 500 mA (measure 50mV)).
•To correctly calibrate the reader you need to find the right capacitance value (jumper J1, J2, J3, J4
and adjustable capacitor). For more details, check the scheme and the algorithm above.
•The ground jumper can be used to reduce perturbations.
To interface
- +
Adjustable capacitor
(fine calibration)
J2
J3
J4
J1
ON
OFF
Internal LED activation
Ground jumper
Consumption measure
Connect here your multimeter
Calibration jumpers


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 4 / 9
J1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
J2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
J3 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
J4 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
Decimal value 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Calibration algorithm
The goal of this algorithm is to find the best jumper setting by a dichotomy method.
oIf the consumption increase when capacitance value is increased, the maximum
consumption value has been already reached. So you have to decrease the total
capacitance value by modifying the jumper setting.
oIf the consumption decrease when capacitance value is increased, the maximum
consumption value has not been already reached. So you have to increase the total
capacitance value by modifying the jumper setting
Capacitance value
consumption
J1: MSB
J2
J3
J4: LSB
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
Best calibration
1
1
1
1
Binary counting
Use the adjustable
capacitor to make a fine
calibration


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 5 / 9
During the algorithm process, if you go back to the last jumper setting, it is because you are near the best
calibration setting. Try, with the adjustable capacitor, to find the maximum consumption (try it with the 2
different jumper setting).
Interface
Option available: Interface with relay
Turn clcokwise the adjustable capacitor
(You add capacitor)
Does Reader
consumption
increases
?
Replace the adjustable capacitor to its middle position
Increase the jumper setting.
You add capacitance. Decrease the jumper setting.
You remove capacitance.
YES
NO
Maximum has not been reached
Maximum has been reached
SETUP jumper
Bus activity
Mechanical ground
L
+
L -
+Alim
GND
RS485 bus
LED-R
LED-V
SCAN
CLOCK
DATA
CODE
+Alim
GND
To the
reader
End of lines resistors
(120 ohms)


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 6 / 9
Reader configuration (SETUP mode)
To configure the reader (address, communication characteristics), you need to go into SETUP mode.
-Switch off the reader
-Fit the SETUP jumper
-Switch on the reader (the reader will automatically send a message on the bus)
You are now into SETUP mode, you can configure the reader to your needs. When you have finish to
configure the reader :
-Switch off the reader
-Remove the SETUP jumper
-Switch on the reader
To get more information about how the RS485 7S reader is operating, please check the 7S protocol
specification
Optimization
If you do not have the best performances, some simple tips could help you to get them.
•Analyze the environment to find possible causes of perturbation
•Verify the wiring. Check that all contacts are corrects.
•Verify that the 0V is connected to a clean ground
•Measure the power supply. In some cases, the power supply doesn’t succeed to drive enough
current and its voltage drop. If you have less than 12V, the performance can be reduced a lot
•Measure the consumption. If you don’t have around 500 mA, you need to calibrate the reader to its
environment (see the calibration section).
•Try to move the reader and/or change its orientation.
TIPS: You can use a 12V battery to power the reader and it will be easier to move it.
CAUTION: All detection tests need to be done with the embedded ‘CP’ LED.
If you move the reader and get better performance on a new place, it means the initial place was not
compliant for long range 125 kHz readers.


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 7 / 9
Mechanical
(Dimension in mm)
Mounting: 3 fixing points on the back of the electronic case (diam 4.2 mm screw type: TF M4).
408,00mm
288,00mm
Boîtier
électronique
(transparence)
Fixation de la
contre-plaque (x4)
Points de
fixation
murale
Led
Electronic case detail
170
120
9
151
Ø 3.3 mm
50
35 25
Protection plate fixation
Electronic case
(ghost view)
Wall fixations


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 8 / 9
Assembling
288.00
408.00
40.00 144.00
33.00
62.00
90.00
LED
288.00
408.00
40.00 144.00
33.00
62.00
90.00
LED
Protection plate
Top of the electronic case
Wall fixation
Wall
Plaque avant de propreté
Antenne
Mur / Support
Coffret
Electronique
Capot
de coffret
électronique
Fixation
murale -
3 points
Fixation de la plaque
avant avec cache vis
Fixation de la plaque
avant avec cache vis
Led
Protection plate fixation
Protection plate
Top of the
electronic case
Wall /
mounting support
Antenna
Wall fiwation


Installation procedure
Hands free reader: L51 - R13 Variant / RS485 type 7S
© STId 2005– NI016C01 P. 9 / 9
Tag using
Present the tag in front of the reader, perpendicularly, and approach it slowly until the tag is detected.
It is not necessary to agitate the tag.
Caution: If the tag is inclined, the reading distance will be reduced.
30°
60%
25°
80%
0°
100%
% distance :
30°
60%
25°
80%
0°
100%
% distance :
Readers installation examples
NO YES
Ground loop
Ground loop