Sehr geehrte Mitarbeiterin, Sehr geehrter Mitarbeiter - OEG AG

OEG AG
Staudnerbachstrasse 1
CH-9472 Grabs
Manual
Digistrob RDS 30
Phone + 4181 750 3000
Fax + 4181 750 3009
eMail info@oeg.ch

Manual
Digistrob RDS 30
1 Stroboscopy_________________________________________________________ 2
1.1 General_________________________________________________________ 2
2 Front view___________________________________________________________ 3
3 Hand lamp __________________________________________________________ 4
4 Rear view ___________________________________________________________ 4
5 Description of functions on the front panel _______________________________ 6
5.1 Display _________________________________________________________ 6
5.2 External triggering ________________________________________________ 6
5.3 Internal-triggering ________________________________________________ 7
5.4 Hand lamp ______________________________________________________ 7
5.5 Phase shifter ____________________________________________________ 8
5.6 Phase shifter by-pass______________________________________________ 8
6 Description of functions on the rear side _________________________________ 9
6.1 Connection of lamp _______________________________________________ 9
6.2 External trigger input ______________________________________________ 9
6.3 Monitor socket ___________________________________________________ 9
6.4 Mode selector___________________________________________________ 10
6.5 Fuse __________________________________________________________ 10
7 Taking into operation ________________________________________________ 11
8 Maintenance, service lifetime, changing the flash tube ____________________ 12
9 DIGISTROB RDS 30, Technical Data ____________________________________ 13
9.1 General________________________________________________________ 13
9.2 Dimensions and weight ___________________________________________ 13
9.3 Measuring range and display _______________________________________ 13
9.4 Internal ________________________________________________________ 13
9.5 External _______________________________________________________ 13
9.6 Monitor socket __________________________________________________ 14
9.7 Selector switch "MODE“___________________________________________ 14
10 Accessories ________________________________________________________ 14
10.1 Table-top stand – TS ___________________________________________ 14
10.2 Table-rod clamp – TRK__________________________________________ 14
10.3 Magnetic base – MF ____________________________________________ 15
10.4 Single articulated arm – EA1 _____________________________________ 15
10.5 Double articulated arm – DA2_____________________________________ 15
10.6 Hand lamp with cable ___________________________________________ 15
10.7 Support for probe – SH 1 ________________________________________ 15
10.8 Photo-electric reflection probe – A1S30P ____________________________ 16
10.9 Inductive scanner – A2S06P______________________________________ 16
10.10 Extension cable – SAK 2m _______________________________________ 16
10.11 Extension cable – LAK 2m _______________________________________ 16
10.12 Carrier bag for RDS 30 – TT______________________________________ 16
11 Schematics_________________________________________________________ 17
11.1 External trigger, Input circuit RDS 30 (schematic) _____________________ 17
11.2 External input RDS 30 __________________________________________ 18
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Manual
Digistrob RDS 30
1 Stroboscopy
1.1 General
With the flashlight stroboscope DIGISTROB RDS 30 fast motion sequences
- which cannot be observed with the naked eye - can be made visible and can be recorded
for measuring purposes.
When intensive light flashes are repeatedly projected to the same point of a moving part, the
eye observes only what becomes visible during the light flash. Because the eye is too slow in
taking up single images at high frequency, this melts into one continuous image. The moving
part seems to stand still, providing the motion sequences coincide with the flash sequences
or with a round multiple of these.
In this manner at the same time the number of revolutions or the interval of periods can be
measured contact less. In order to achieve a really steady image, the stroboscope must have
a high accuracy of flash sequences.
With the integrated phase shifter the timing of the flash (and thus the point of observation)
can be shifted within the motion cycle.
In this manner all kinds of motion sequences can be observed and investigated.
Example Fan:
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Manual
Digistrob RDS 30
2 Front view
Display
1 Power switch ON / OFF
2 Indication in RPM, range 150 - 22'000min -1 (±1min -1 )
3 Indication in Hz, range 2,5 - 360Hz (± 0,3Hz)
4 Indication of period interval in ms, range 2,5 - 400ms (± 0,2ms)
5 Indication of range exceeded or range fallen short of with external triggering
(LED display extinguishes).
6 5-digit LED display
External triggering
7 Synchronization with mains
8 Via photo-electric pick-up with bright markings
9 Via photo-electric pick-up with dark markings
10 Via inductive pick-up with gear wheels
11 Via inductive pick-up with aperture disks
12 3-decade input divider (1-999)
13 Indication when divider setting ≠ 1
Internal triggering
14 Range I 200 - 4000 min -1
3 - 66 Hz
300 - 15 ms
15 Range II 1000 - 20000 min -1
15 - 333 Hz
60 - 3 ms
16 Double control knob with step-down for course/fine adjustment of the internal
oscillator.
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Manual
Digistrob RDS 30
3 Hand lamp
17 Switch-on push-button
18 Lock for switch-on button
19 Phase shift potentiometer
(can be switched off with mode switch 24)
20 Quartz tube with xenon white light
4 Rear view
21 Socket for lamp connection
22 External trigger input for:
• inductive pick-up
• optical pick-up
• light barriers
• logic signal
• alternating current
Trigger, Allocation of pins
1 +15V pick-up circuit supply voltage
2 signal input
3 +8.2V pick-up circuit supply voltage
4 signal input
5 ground 0V
6 screen
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Manual
Digistrob RDS 30
23 Monitor socket
Monitor, allocation of pins
1 pulse output with divider 12 Logic signal 15V / 40mA,
temporarily short-circuit proof
2 ØV
3 Pull-up resistor (5.6kΩ) for open-collector driver from
external gate
4 Gate input for external hand lamp control
by a logic signal of (+15V / ØV)
with polarity and single flash switch-over 24
5 Frequency proportional voltage output
30mV / Hz or 500µV / min -1 , Linearity ± 5%
Offset not balanced, temporarily short-circuit proof
24 Mode selector
Switch functions
1 Phase shifter by-pass
2 Single flash switch-over when switched via external gate
(23, Pin 4/2)
3 Polarity switch-over for external gate input
(high/low - active)
4 no function
25 Fuse: 0.315 A slow blow
26 Power connection cable for 230V / 50Hz
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Manual
Digistrob RDS 30
5 Description of functions on the front panel
5.1 Display
The DIGISTROB RDS 30 shows the measured value with an accuracy of ± 1 digit on
the 5-digit LED display 6. Depending on the selected range, the indication is direct in
2 pulses/minute or RPM
measuring range: 150 - 22000min -1
measuring accuracy: ± 1min -1
3 Pulses/sec. or frequency in Hz
measuring range: 2,5 - 360Hz
measuring accuracy: ±0,3Hz
4 Time in ms between two pulses or period interval
measuring range: 2,5 - 400ms
measuring accuracy: ±0,2ms
When these ranges are exceeded or fallen short of, this is indicated with signal LED 5 and
the LED display 6 extinguishes.
The same happens when the input signals fluctuate strongly during the synchronization time
(a few seconds) of the PLL (Phase Locked Loop) or if they fail altogether (range fallen short
of).
Thus when the DIGISTROB RDS 30 is switched on by means of the power switch 1 and the
input signals are not yet available or fluctuate strongly, the LED display 6 remains dark.
In this event only the indication LED 5 lights up.
5.2 External triggering
The DIGISTROB RDS 30 can be triggered from outside in various manners. The following
possibilities of external triggering can be set by means of the the keys 7 - 11:
7 triggering synchronous to mains
8 via photo-electric pick-up with bright markings on the object
9 via photo-electric pick-up with dark markings on the object
10 via inductive pick-up with gear wheels
11 via inductive pick-up with aperture discs
Triggering is also possible by means of external voltage sources or
by means of Visolux pick-up circuits.
In this case the input circuit Ind A 10 / Inductive B 11 is particularly
suited for fast signals with little disturbance. But this method of
triggering is not suitable for very slow signals.
For very slow signals or such with a high disturbance factor it is recommended to lead the
triggering via Photoelectric A 8 / Photoelectric B 9.
But this triggering variant is again not suited for fast signals with fluctuating aplitude.
A wide selection of optical and inductive pick-ups and external voltage sources can be
connected to the "trigger" socket 22.
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Digistrob RDS 30
Every external trigger signal can be stepped down to ratios 1 - 999 via the 3-decade input
divider 12. This enables for example, individual adoption to various pulse/rotation or range
extension for rotation speed measuring.
When the adjustment of the divider ≠ 1, this is indicated by the LED 13 beside it.
The display corresponds to the stepped down measured dimension.
5.3 Internal-triggering
For internal triggering the adequate measuring range has to be preselected
with keys 14 and 15. Two ranges can be selected:
Range I 14 : 200 - 4000 min -1
3 - 66 Hz
300- 15 ms
Range II 15 : 1000 - 20000 min -1
15 - 333 Hz
60- 3 ms
By means of the double control knob with step-down 16, the internal oscillator can be
adjusted course and fine, until a steady image has been attained.
The oscillator is now balanced and the sequence of flashes coincides with the motion
sequence.
Rotation speed, frequency and period interval can now be read directly.
For balancing adjustment of the internal oscillator it is of advantage to advance to the
frequency of the measured object "from above". In this manner in most cases, already at the
first steady image, the correct measured value will be shown. On the other hand, a steady
image will also be obtained when the flash frequency is stepped down to a whole numbered
ratio of that of the measured object.
5.4 Hand lamp
The hand lamp is activated by means of pushbutton 17.
The push-button can be locked with button 18. The power
of the flash from the quartz flash tube with white Xenon
light is 0.08 - 0.4 Ws per flash. It is automatically reduced
by steps as the flash frequency increases, so that the
maximum power of the lamp of 25 W is not exceeded. In
the event of overloading the hand lamp is automatically
switched off.
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Manual
Digistrob RDS 30
5.5 Phase shifter
A frequency which is synchronous with the motion cycle is led to the stroboscope RDS 30
via the pick-up connection (trigger socket 22). This frequency is led to the phase shifter. The
latter calculates the delay interval between the incoming control pulse and the flash timing,
for the adjusted phase shift angle and controls the ignition pulse for the flash lamp
accordingly.
A phase shift of up to 360° can be attained with the integrated phase shift potentiometer 19.
5.6 Phase shifter by-pass
With external triggering on a fluctuating (instable) motion the flashed image will appear
slightly off-set at every change of speed. This is caused by the fact that the phase shifter
needs two periods of the motion cycle to synchronize. In order to attain a highly stable image
also with non-periodic or heavily fluctuating quasi periodic motions, the phase shifter can be
by-passed by bridging over at the back of the RDS 30. In this manner a continuous delay will
be attained between trigger pulse and flash. This can be done just by pressing down switch
No. 1 at the mode selector 24 of the monitor. When switch No. 1 is on this position the phase
shifter potentiometer is inactivated.
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Manual
Digistrob RDS 30
6 Description of functions on the rear side
6.1 Connection of lamp
The hand lamp is connected and locked at socket 21.
6.2 External trigger input
If the RDS 30 has to be triggered externally, the external
trigger signal input is connected to the trigger input (socket 22) and the adequate input circuit
is selected at the control elements 8-12 at the front. With mains-synchronous triggering 7
connection for signal at the trigger input 22 is not required.
All supplied pick-ups (see accessories page 16) can be
connected directly to the "trigger" socket 22. For other
emitters and for external voltage sources the wiring
examples on pages 18-20 should be observed.
Allocation of pins and input wiring can be seen on the
diagram on page 17 and the legend on page 4.
6.3 Monitor socket
Pulse output
The RDS 30 has a pulse output as well as an analog output. The 15V/40mA logic signal of
the pulse output at the monitor socket 23 pin 1/2 is also stepped down at the ratio of the input
divider 12, in accordance with the input pulses. Furthermore, the pulse output is temporarily
short-circuit proof.
Analog output
The analog output is taken from pin 5/2 of socket 23, in form of a frequency proportional
voltage. The voltage is 30 mV/Hz or 500 µV/min -1 and has a linearity of ± 5%.
The analog output is also temporarily short-circuit proof, but has no offset balancing.
External gate input
The hand lamp can also be driven externally via the gate input (monitor socket 23, pin 4/2). In
this case the polarity of the gate (high/low - active) can be selected with the selector switch
"mode 3" 24.
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Manual
Digistrob RDS 30
6.4 Mode selector
Switch 1 Switch 1 of the mode selector 24 effects the phase shift bypass.
If it is pushed downward, the phase level of an
external signal can no longer be changed. The interval
between pulse input and flash remains constant, approx.
100 - 130µs at a divider setting 12 of 001 (see also phase
shifter by-pass on page 8).
Switch 2 If the hand lamp is driven externally, it can be switched on to
single flash triggering by pushing down the mode switch 2.
This effects that after having activated the hand lamp via the
gate input (monitor socket 23, pin 4/2), the flash will only be
triggered by the next following pulse. Single flash triggering
is suitable in the first place, for photographic applications.
Switch 3 The polarity of the external gate (high/low - active) can be switched over with
the mode switch 3. This means that when this switch is in the upward position,
the open circuit has to be closed via the monitor socket 23 pin 4/2, for
activation of the hand lamp.
When switch 3 is pushed down the hand lamp is activated when the closed
circuit is interrupted via the monitor socket 23 pin 4/2.
Switch 4 The mode selector switch 4 has no function.
6.5 Fuse
The RDS 30 is protected against overload by a fuse of type
IEC 123/III 230V / 0.315A, slow blow.
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Manual
Digistrob RDS 30
7 Taking into operation
Before the Digistrob RDS 30 is connected to the mains, we recommend the following
procedure:
• Connect hand lamp
• Check that the correct range has been set at the control elements at the front and that
not several keys have been depressed simultaneously.
Recommended adjustment: display rpm 2 or Hz 3 internal triggering 14.
• At the mode selector (24) at the back, place all switches in the upward position in
order to avoid having activated any unwanted special functions
• Make sure that the mains connection is in accordance with the data given on the
apparatus (230V / 50 - 60Hz)
Now the apparatus can be connected to the power outlet and can be switched on with the
power switch 1. In this setting the display 6 will light up after a short interval. Now the
frequency can be changed with the double control knob 16 and the display and function of
the apparatus can be tested. By switching on the hand lamp switch 17 also the function of the
hand lamp can be tested. The flash light stroboscope Digistrob RDS 30 is now ready for
operation. The required working range and the special functions can now be adjusted for the
required application.
ATTENTION!
NEVER DISCONNECT THE HAND LAMP DURING OPERATION.
This could cause damage to the electronics!
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Manual
Digistrob RDS 30
8 Maintenance, service lifetime, changing the flash tube
The flash-light stroboscope DIGISTROB RDS 30 requires no maintenance.
However it should be protected against moisture. The RDS 30 must not be opened and it
must not be subjected to strong vibration or shock.
Under full load the Xenon white light flash tube has a minimum service lifetime of approx. 250
hours. Also the hand lamp should not be subjected to strong vibration or shock.
For changing a flash tube proceed as follows:
1. Switch off the apparatus!
2. Disconnect the hand lamp!
3. Hold the lamp shade A from the front
and turn with force anti-clockwise, till it
stops (bayonet fitting). Now the lamp
shade can be removed.
4. Remove cover B by inserting a
screwdriver in the small aperture at the
side and twisting it.
5. Loosen the two screws D and E and take
away the side plate C.
6. Now the black cooler body which
encases the flash lamp, can be slid off
forward.
7. The flash tube is now open and can be detached.
Hold the new flash tube only at the plug: When
inserting it, make sure that the catch of the plug
correctly snaps home.
8. The hand lamp is now reassembled in reverse
order. Make sure that the black cooler body is
fastened tightly in its guide. Turn the cover B so,
that the small notch fits into the groove and snaps home.
Also turn the lamp shade A so, that the two notches fit into the the guide.
Then turn the groove towards the upper center slot (clockwise), until the lamp shade
snaps home.
The hand lamp is now again ready for use.
ATTENTION: NEVER APPLY FORCE WHEN DISMANTLING!
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Digistrob RDS 30
9 DIGISTROB RDS 30, Technical Data
9.1 General
Operating voltage: 230V AC ±10%, 50 - 60Hz, (115V AC upon request)
Power requirement: 50VA max.
Operating temperature: 0 - 40°C
Flash frequency: 3-333Hz / continuous (180-20'000min -1 )
max: 415Hz, 1 min. (25'000min -1 )
Control unit: Alum. housing with handle
Hand lamp: plastic (extra light - temperature resistant)
Handle with camera thread
9.2 Dimensions and weight
Dimensions hand lamp: 105 x 220 x185 (H/W/D in mm)
control unit: 100 x 285 x 300 (H/W/D in mm)
Weight hand lamp: 0.850kg
Weight control unit: 3.6kg
9.3 Measuring range and display
Speed (RPM): 150 – 22'000min -1 , ±1min -1
Frequency (Hz): 2,5 – 360Hz, ± 0.3Hz
Period (ms): 2,5 – 400ms, ± 0.2ms
9.4 Internal
Flash triggering from internal oscillator, adjustable course and fine by means of double
control knob, adjustment with step-down
Range I: 200 – 4000min -1
3 – 66Hz
300 – 15ms
Range II: 1000 – 20000min -1
16 – 333Hz
60 – 3ms
9.5 External
• Synchronous to mains
• Optical and inductive p i c k - u p s
• Logic signal
• Alternating current
Bright and dark markings (optical) as well as gear wheels or perforated disks (inductive)
Input divider for frequency division
Emitter voltage: 100mV - 20V AC/DC
Divider range: 1 + 999, BCD coding switch
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Digistrob RDS 30
9.6 Monitor socket
Frequency output: logic signal, 15V / 40mA, temporarily short circuit proof
Voltage output: 30mV / Hz, linearity ± 5%, temporarily short circuit proof
Gate input: For external driving of the hand lamp
(switching ON/OFF or single flash triggering)
Contact or logic signal (+15V / 0V)
normally open/normally closed or polarity switch
9.7 Selector switch "MODE“
1 Phase shifter by-pass, effects a constant delay interval between trigger pulse and
flash
2 Single flash setting for driving via gate
3 Polarity setting (high/low - active) of the gate
4 Has no function
10 Accessories
Examples:
10.1 Table-top stand – TS
∅ 150 mm, with threaded hole M8
10.2 Table-rod clamp – TRK
Clamping width 40 mm, with threaded hole M8
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Digistrob RDS 30
10.3 Magnetic base – MF
debitable 75 kg, with threaded hole M8
for fixing:
Table-top stand – TS
Table-rod clamp – TRK
Magnetic base – MF
10.4 Single articulated arm – EA1
M8 and ¼" Ww thread, with knurled nut
L = 120mm
for fixing:
Table-top stand – TS
Table-rod clamp – TRK
Magnetic base – MF
10.5 Double articulated arm – DA2
M8 und ¼" Ww thread, with knurled nut
L = 210 mm
for fixing:
Single articulated arm – EA1
Double articulated arm – DA2
10.6 Hand lamp with cable
threaded hole ¼" Ww
for fixing:
Single articulated arm – EA1
Double articulated arm – DA2
10.7 Support for probe – SH 1
Clamping width 28 mm, threaded hole ¼" Ww
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Manual
Digistrob RDS 30
10.8 Photo-electric reflection probe – A1S30P
for bright / dark pulses (paint markings, reflective foil)
size of markings min. 3 x 5mm
scanning range 2 ... 5mm
frequency 0.5 ... 25'000Hz
dimensions ∅ 8 x 95 mm (without plug)
10.9 Inductive scanner – A2S06P
for gear wheel m2, groove 2 x 8mm, bore ∅ 4mm (min)
scanning range 0.5 ... 5mm
frequency 1 ... 25'000Hz
dimensions ∅ 8 x 95 mm (without plug)
10.10 Extension cable – SAK 2m
L = 2m, for:
Photo-electric reflection probe – A1S30P
Inductive scanner – A2S06P
10.11 Extension cable – LAK 2m
L = 0.5m (extended 2m), for:
Hand lamp with cable
10.12 Carrier bag for RDS 30 – TT
Control unit, hand lamp and accessories
330 x 310 x 280mm (H/W/D)
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Manual
Digistrob RDS 30
11 Schematics
11.1 External trigger, Input circuit RDS 30 (schematic)
External trigger
220E 0.5W
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Manual
Digistrob RDS 30
11.2 External input RDS 30
pick-up type probe connector external trigger switch position
photo-electric
probes A1S ...
cable type SAK
active inductive
probes ATS2,
....E, A2S....E
Cable type B2A001
active inductive
probes ATS2,
....P, A2S....P
Cable type SAK
HF inductive
probes A4S....,
ATS 4/...
Cable type B4A 005
Photoelectric A
Photoelectric B
Inductive A
Inductive B
Inductive A
Inductive B
Inductive A
Inductive B
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Manual
Digistrob RDS 30
magnetic field
probes A5S....,
A5L…., A5G...
Cable type
L3A 04PE
external voltage
source
100mV-20V AC/DC
related to ground
external voltage
source
100mV-20V AC/DC
related to ground
external voltage
source
100mV-20V AC/DC
symmetrical
logic-level input
Open – Collector
8.2 V / 1mA (10kΩ)
Inductive A
Inductive B
Photoelectric B
Inductive A
Photoelectric A
Inductive A
Inductive B
Inductive A
Photoelectric A
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Manual
Digistrob RDS 30
for Visolux
inductive/capacitive
proximity switch
10 – 30V / NPN
for Visolux
inductive/capacitive
proximity switch
10 – 30V / PNP
automotive ignition
coils primary outlet
B1B 001
Cable type SAK
Inductive A
Photoelectric A
Inductive B
Photoelectric B
Inductive A
Inductive B
Photoelectric A
Photoelectric B
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