Instruction Manual
11.0 ACCESSORIES
T-5 Reflective Tape, 5 foot [1.5 m] roll, ½ inch [13 mm] wide
T-5WP Waterproof Reflective Tape (honeycomb pattern), 5
foot [1.5 m] roll, 1 inch [25 mm] wide
SLS-CA-BNC Cable assembly with BNC connector (SO)
SLS-CA-W Cable assembly with tinned leads
SLS-CA-P Cable assembly with 1/8 inch [3.5 mm] mono plug (SO)
SLS-CA-RS232 Cable assembly with DB9 connector for RS232
SLS Battery Pack Replacement rechargeable Ni-Cd batteries
PR Universal Recharger/Power Supply with assorted adapter plugs
MONARCH INSTRUMENT
SLS-115/230
Smart Laser Sensor
Printed in the U.S.A.
Copyright 2011 Monarch Instrument, all rights reserved
1071-4859-112R
0411
SAFEGUARDS AND PRECAUTIONS
WARNING - This product emits a visible beam of laser light.
Avoid exposure to the laser radiation. The use of optical viewing
aids (binoculars, for example) may increase the ocular hazard.
CAUTION - The laser beam should not be intentionally aimed at people or
animals.
CAUTION - Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
WARNING - Use only the “PR Universal” charger supplied with the product.
Read and follow all instructions in this manual carefully, and retain this
manual for future reference.
Do not use this instrument in any manner inconsistent with these operating
instructions or under any conditions that exceed the environmental
specifications stated.
This instrument is not user serviceable. For technical assistance, contact
the sales organization from which you purchased the product.
In order to comply with EU Directive 2002/96/EC on Waste Electrical
and Electronic Equipment (WEEE): This product may contain material
which could be hazardous to human health and the environment. DO NOT
DISPOSE of this product as unsorted municipal waste. This product
needs to be RECYCLED in accordance with local regulations, contact
your local authorities for more information. This product may be returnable
to your distributor for recycling - contact the distributor for details.
Dimensions: 5.38" (13.67cm) L (including snout) x 2.53" (6.42cm) W
x 2.25" (5.72cm) H (including knob and feet)
Dimensions in Inches [mm]
Installation Environment:
Installation Category II per IEC 664
Pollution Degree Level II per IEC 61010-1
Temperature: 32 to 104 °F (0 to +40 °C) operating
14 to 158 °F (-10 to +70 °C) storage
Humidity: Maximum relative humidity of 80% for temperatures
up to 88 °F (31 °C) decreasing linearly to 50% relative
humidity at 104 °F (40 °C)
Specifications subject to change without notice.
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PR Universal Charger:
Input: 100-240 V , 50-60 Hz
Output: 9 V , Dry location use only
Check charger label for power information.
Pulse Output:
SO: Source Output - Square Wave 0 to 3.9V typical @ 15mA
(PNP to 4.2V, 4.7K ohms to common) (TTL Compatible)
OC: Open Collector - Switches to common, External pull up
resistor to user supplied power (max 24 V ) required
Polarity: Positive or Negative pulse (switch selectable)
RS232: Transmit Out – ASCII value of RPM (Accuracy ±
0.002% of reading)
Settings: 9600 baud, 8 bits, 1 stop, No Parity
Connector: Circular DIN 5 Socket - Common, (Outputs) SO, OC,
(Serial RS232) Transmit, Receive
Mounting: ¼-20 UNC Bushing included (Tripod Mount)
Weight: 10.6 oz (300.5 grams) excluding cable and charger
Compliance: CE 2004/108/EC EMC directive (EN 61326)
IEC 61010-1 2001, IEC 60825-1 2001, CFR 1040.10 and
1040.11 except for deviations pursuant to Laser Notice No. 50,
dated July 26, 2001
N.I.S.T. Calibration (RS232 output only)
TABLE OF CONTENTS
TABLE OF CONTENTS
1.0 OVERVIEW ................................................................. 1
2.0 INDICATORS AND SWITCHES .................................. 1
3.0 QUICK START GUIDE ................................................ 3
4.0 CONNECTION DETAIL ................................................ 4
5.0 OPERATION ............................................................... 5
5.1 Auto Mode ...................................................................... 6
5.2 Manual Mode ................................................................. 6
6.0 ADVANCED FEATURE (TARGET POLARITY)............. 7
7.0 AIMING THE LASER ...................................................7
8.0 RS232 .........................................................................8
9.0 CHARGING .................................................................9
10.0 SMART LASER SENSOR SPECIFICATIONS ............. 9
11.0 OPTIONS / ACCESSORIES ................................ BACK
Symbols on the unit and in this manual:
Warning Direct current
Laser Beam
Caution Alternating current
Read Manual
11
1.0 OVERVIEW
The Smart Laser Sensor (SLS) is a self-contained unit intended to be used to
make non-contact speed measurements from rotating targets at distances
up to 65 feet (19.8 m) or to provide non-contact reference points to balancing
equipment. Refer to Section 6.0 for an overview of operation. The unit will
output one (TTL Compatible) pulse per revolution and has the ability to
compute the RPM internally and output the ASCII values to any equipment
capable of receiving an RS232 input. For best performance use reflective
tape for the target.
2.0 INDICATORS AND SWITCHES
1
2
3
4
Figure 1 Smart Laser Sensor
1. On Target LED Lit whenever the sensor is receiving a
reflected signal back from the target. As the
frequency increases, it will be on solid unless
the measured frequency is not stable. This is
useful in setting up the unit.
1
5 6
7
8
Operating Range: Up to 65 feet depending on target reflectivity:
1/2” reflective tape (T-5) @3600 RPM: up to 65 ft. (19.8 m) or up to
75° from target
White/Black contrast @3600 RPM: up to 3 ft. (91 cm) or up to 45°
from target
Black mark on dental drill: up to 4 in. (10 cm) at over
260,000 RPM
Max RPM: 500,000 RPM
Min. Trigger Duration: 10 µsec
Indicators: LEDs for On Target, Laser On, Auto/Gain, Power/Charge
Modes: Normal (manual) or Auto, and charging
Normal mode – manual adjustment of sensitivity / gain
Auto mode – auto learn, automatic gain control
Sensitivity Adjust: Single Turn knob on top panel in Normal mode
Voltage Requirements:
Operational: Internal: rechargeable batteries
External: +9 V 1VA
Charging: External: +9 V 3VA
Batteries: Internal 4 “AA” rechargeable NiCd 700mAh
Run Time: Over 6 hours continuous operation from fully charged
batteries @ 70 °F (21 °C)
Charge Time: Typically less than 3 hours @ 70 °F (21 °C)
10
9.0 CHARGING
Slide the Power switch (8) to the Off/Charge position and plug in the
charger. The Power LED (4) will blink red while the unit is fast charging.
The Power LED will blink amber when slow (trickle) charging. It will be
solid amber when the batteries are fully charged.
Note: If the charger is plugged in when the Power switch is the on
position, the batteries will be trickle charged during operation.
CAUTION: Use only the supplied PR-Universal charger with the
sensor.
10.0 SMART LASER SENSOR SPECIFICATIONS
Laser Specifications:
Classification: Class 3R (per IEC 60825-1 Ed 1.2 2001-8)
Complies with FDA performance standards for laser products except for
deviations pursuant to Laser Notice No. 50, dated July 26, 2001.
Maximum Laser Output: 3mW
Pulse Duration: Continuous
Wavelength: 650 nm
Laser
Beam Divergence: < 0.5 mrad
Beam Diameter: 4 x 7 mm typical at 2 meters
Laser Diode Life: 8,000 hours MTBF (1 year warranty)
Laser is on when this
indicator is illuminated.
AVOID EXPOSURE
LASER RADIATION IS
EMITTED FROM THIS
APERTURE.
2. Laser On LED Blinks when unit is first turned on. Remains
lit when the laser beam is on.
3. Auto/Gain LED On solid whenever the unit is in the Auto
mode. It also blinks from 1 to 8 times to
indicate the current gain whenever the gain is
changed.
4. Power LED (Dependent on the Power switch location)
On position: GREEN when the batteries are charged.
Blinks AMBER when the batteries are low.
Charge position: Blinks RED when fast charging for very low
batteries.
Blinks AMBER when slow charging.
Steady AMBER when the batteries are fully
charged.
5. Polarity switch Selects either a positive or negative output
pulse.
6. Learn/Gain button
In Auto Mode: Press and hold until the On Target LED blinks
regularly or is on solid.
In Manual Mode: Press to change gain ranges.
7. Sensitivity Adjust knob Turn fully counterclockwise to select
Auto mode or manually adjust
sensitivity threshold.
8. Power switch Turns unit On or Off. When the unit is
switched to Off/Charge and a charger is
plugged into the unit, the batteries will charge.
9
2
3.0 QUICK START GUIDE
3.1 Slide Power switch (8) to “On”.
3.2 Rotate Sensitivity Adjust knob (7) fully counterclockwise to
the “Auto” position.
3.3 Aim the laser dot perpendicular to the target - reflective tape,
contrasting color or keyway.
3.4 If the On Target LED (1) is not on, push and hold the Red
Learn/Gain button (6) until the On Target LED (1) blinks
regularly. Note that at higher RPMs the LED will be on solid.
3.5 If after completing step 3.4, the On Target LED (1) blinks
erratically or not at all, rotate the Sensitivity Adjust knob (7)
slowly from 1 to 9 until the LED blinks regularly or is on solid.
3.6 If after completing steps 3.1-3.5, the On Target LED (1) blinks
erratically or not at all:
3.6.1 Move the sensor closer to the target and ensure it is
perpendicular to the target. Repeat steps 3.1-3.5.
3.6.2 Increase the contrast/reflectivity of the target. Repeat
steps 3.1-3.5.
3.7 Once the On Target signal is obtained, use the Polarity Switch
(5) to select a compatible output pulse for your application.
To aid in locating the laser dot over a large distance, hold a piece of white
cardboard or equivalent in front of the laser. Progressively move the white
surface closer to the desired target. Then adjust the aim of the laser as necessary.
In areas of high ambient light (outdoors), performance can be enhanced at
long distances by slipping a piece of black tube with a minimum inner
diameter of 0.6 inches, over the nose piece to act as an extension nose piece.
This tube should not deflect the beam in any way.
8.0 RS232
Baud rate = 9600, 8 bits, 1 stop bit, no parity.
When the unit is turned on, it will send out: “SLS<lf><cr>Vx.x<lf><cr>
0.0<cr>”. Where <lf> is the linefeed character, <cr> is a carriage return
character, and x.x is the firmware version number.
The unit will send out the current RPM as a right justified 7-digit ASCII
number that will always include a decimal point followed by carriage return.
The update rate is a function of the speed of the target and will not exceed
twice per second.
Examples:
1234.56<cr>
123456.<cr>
_ _ _ _0.0<cr> ( _ = space character)
3
8
Pin Description Wire Color (of cable)
1 RS232 Receive (input to
sensor)
Red
2 Common Orange [BNC –]
3 SO (PNP Output)
TTL compatible output
Yellow [BNC +]
4 RS232 Transmit (output
from sensor)
White
5 OC (NPN Output) Black
Auto/Gain LED (3) will blink to show what gain has been selected. If
the button is held down, the gain will increase automatically after each
LED ‘blink’ pattern. Refer to Table 2. The larger the gain, the weaker
the signal being picked-up. Using a large gain for a strong signal is not
recommended since the input will saturate.
6.0 ADVANCED FEATURE (TARGET POLARITY)
The input circuitry can be set to optimally work with two different target
types: a reflective (white, shiny) target on a mostly non-reflective (black,
dull) background or a non-reflective (black, dull) target or a mostly reflective
(white, shiny) background. These will be referred to as a white target or a
black target. When the unit is first turned on, the On Target LED (1) will
indicate which target type the sensor is set up for. While the Laser On
LED (2) is blinking, the On Target LED will be on for a white target or off
for a black target. The unit will still work when set up for the “wrong”
target type, but it won’t have as great a range. When set for a white target,
the unit triggers on the black to white transition. When set for a black
target, the unit triggers on the white to black transition.
To change the setting, move the Polarity switch (5) to the left (positive
pulse) for a white target or to the right (negative pulse) for a black target.
Turn the Sensitivity Adjust knob (7) to Max. Press and hold the Learn/
Gain button (6) until the Auto/Gain LED (3) blinks.
7.0 AIMING THE LASER
The proper operation of the Laser Sensor is dependent upon the alignment
to and reflectivity of the target. In order to aim the beam it is necessary to
stand behind the sensor and view the target along the plane of the beam. Do
not stare directly into the laser beam or the reflected light. For targets
greater than 5 feet and up to 65 feet from the sensor, mount the laser on a
tripod using the ¼ - 20 bushing on the bottom of the unit and attach T-5
reflective tape to the target.
7
4.0 CONNECTION DETAIL
The unit has an input power jack for
DC power or recharging the batteries.
Use only the PR Universal charger
supplied.
The unit also has a five-pin DIN
output socket for Pulse outputs and
RS232. An 8-foot [2.5 m] cable with
a DIN plug and BNC connector is
supplied. The BNC plug is
connected to the SO output. A
variety of optional cables are
available including: tinned wire
termination, 1/8 inch [3.5 mm] mono
plug, or DB9 for RS-232.
Refer to Table 1 and Figure 3 for the output socket connection detail:
Table 1 Output Connections
DC Power/Charger
9V 3VA MAX
Use PR Universal ONLY.
Figure 2 Connection Details
Pulse/
RS232
Output
4
Figure 3 Pin Connections
Number of blinks Gain
1 Strong Signal X 1
2 X 2
3 X 4
4 X 5
5 X 8
6 X 10
7 X 16
8 Weak Signal - Move
Closer
X 32
5.0 OPERATION
Note: Refer to Figure 1 for switch and button locations.
Turn the unit on by moving the Power switch (8) to the On position. The
unit may be operated from the internal batteries and/or the charger/power
supply. The internal batteries will be trickle charged when using the AC
charger/power supply. To turn the unit off, slide the Power switch (8) to
the Off/Charge position. If the charger is plugged in, the batteries will
charge.
The sensor emits a laser beam, which is reflected back by a target (reflective
tape/paint, keyway, contrasting colors, etc). This reflected light is sensed
and amplified then compared to a threshold level (sensitivity) - the lower
the threshold level, the more ‘sensitive’ the sensor is. Whenever the amplified
signal is above the threshold, the output goes high (positive pulse) or low
5
(negative pulse). The user can select either a positive or a negative output
pulse using the Polarity switch (5).
The gain of the input amplifier and the sensitivity can be adjusted manually
or automatically. This allows the unit to be used with many types of
targets at various distances and contrasting color conditions. To select the
Auto mode, turn the Sensitivity Adjust knob (7) fully counterclockwise,
otherwise you are in the Manual mode. Reflective tape and high contrast
color applications should be able to use the Auto mode.
5.1 Auto Mode
Make sure the Sensitivity Adjust
knob (7) is fully counterclockwise
and the Auto/Gain LED (3) is on.
Aim the laser at your target. Press
and hold the Learn/Gain button (6)
until the On Target LED (1) blinks
regularly or is on solid (depending
on the RPM of the target). Release
the Learn/Gain button. The Auto/
Gain LED will blink to show what
gain has been selected. Refer to
Table 2 Auto/Gain Blinks
Table 2.
In many applications, this is all that is needed. In cases where the target is
marginal, the user may need to manually adjust the sensitivity after trying
the Auto mode.
5.2 Manual Mode
Aim the laser at your target. Turn the Sensitivity Adjust knob (7)
between Min and Max until the On Target LED (1) starts blinking or
comes on solid. If you can’t get a good setting, change the gain. Press
and release the Learn/Gain button (6) to change the gain of the input
amplifier. Each time the button is pressed, the gain is changed. The
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