Nidec DT-362 User manual

DT-362 LED Stroboscope
Operation Manual
Use in flammable environments is prohibited. Use in this manner may
result in fire or explosive.
Do not look directly into the LED light Source. This may result in eye
injury.
Do not use or store in the following environments: Direct sunshine con-
densation, dust or caustic.
Do not alter, or modify of improperly. Such action may cause damage
and void warranty.
Operate with 0-35°C (32-95°F), 35-85% RH. Use outside of this range
may alter operation of the unit.
Case may become excessively hot when used continuously for more
than 2 hours. Mount unit on a tripod or other fixed device.
SPECIFICATIONS
Flash Rate Range: 30 to 120,000 FPM ; 1-2000 Hz
Accuracy: 0.01%±1 digit of F.S. @ 77° F (25°C)
Lux Rating (Approx.): 6000 FPM: Distance 8˝ (20 cm) 6850 lx
with 10˝ (254 mm) irradiation dia., Distance 20˝ (50 cm) 2325 lx
with 14˝ (355 mm) irradiation dia. 1500 FPM: Distance 8˝ (20 cm)
3395 lx with 10˝ (254 mm) irradiation dia., Distance 20˝ (50 cm)
1350 lx with 14˝ (355 mm) irradiation dia
Lamp Lifetime: Approximately 3~5 years depending on usage.
Display: Backlit LCD
Resolution: 60 ~12,000 FPM = 0.1 FPM; 12,001~120,000 FPM
= 1 FPM; 1~200 HZ = 0.01 Hz; 201~2000 = 0.1 Hz
Flash Duration: 0.1°- 2.5°
Power Requirement: 85-240 VAC 50/60Hz
External Sensor Input: Pulse Input; Mini-USB
Sensor Power Supply: 15 V dc up to 50 mA
Input Pulse Width: Over 50 µs
Input Signal Flash Delay: 0-999 ms; 0-359°
Temperature Limits: 32-95°F (0-35°C)
Humidity Limits: 35 to 85% RH
Enclosure: Aluminum & ABS
Product Weight: 1.8 lb (0.82 kg)
Package Weight: 5.3 lb (2.4 kg)
Dimensions: 8 x 4.3 x 7.6” (203 x 110 x 192 mm)
Approvals: CE, RoHS
Warrenty: 1 Year
Included Accessories: Carrying Case, 9.8’ (3 m) power cable,
Bottom and Top Handle
Operation Panel Located on Control Enclosure
POWER: Power on and off.
MODE: Select mode of operation or Parameter Menu: Internal/
External/Parameter Settings
SET: Change Units (FPM to Hz); In Parameter Menu scroll through
parameter settings, Store setting values.
x2: Multiplies the flash rate/frequency by a factor of 2.
1/2: Divides the flash rate/frequency by a factor of 2.
RATIO: Adjusts flash duration (flash pulse width) in Internal/Ex-
ternal modes.
“+”: Advance image forward 3 degrees at a time in internal mode.
In parameter setting mode, adjusts setting values.
“-”: Retard image backwards 3 degrees at a time in internal mode.
In parameter setting mode, adjusts setting values.
Dial: Set flash rate or frequency. CW: Increase flash rate/frequen-
cy. CCW: Decrease flash rate/frequency. (Turn dial quickly to
drastically change value; Turn dial slowly to change value by 1
digit.) In parameter setting mode, CW or CCW rotation chang-
es the setting value. *Dial located on side of unit.
SEALS USA, Inc.
Instruments Division Tel: [phone] Email: [email protected]
The DT-362 is a portable, line-powered stroboscope
that utilizes super bright CREE High-Powered LED lamps. The DT-
362’s LED array provides a bright, stable strobe light over a wide
measurement range with a lifetime far exceeding xenon-lit strobo-
scopes. Combined with a large, backlit LCD display, operation is
simple with the 8 button keypad and quick rate-adjustment dial.
Phase shift, flash duration, plus flash rate all are easily viewed and
adjustable. The universal power range (85-240 VAC) allows one
model to be utilized on various power voltages in a multitude of
countries. The unit can function by user altered flash frequency or
from a remote sensor’s signal input which will automatically adjust
the stroboscope to the corresponding process fluctuations.
The DT-362 is designed for speed and frequency measurements
in motion and vibration analysis. It is ideal for predictive and
preventive maintenance applications such as: motors, shafts,
roto-gravure printing, extruders, blow molding, wire lettering
and striping, engraving, pulse jets, water jets, fans, cams, gear
teeth, belt inspections, fuel injectors, vibration analysis, spindle
spinning, cutting blade timing and sharpness, plus many more in
the printing, packaging, textile, automotive, cable, mining, steel,
chemical, optical, medical and shipbuilding industries.
DT-362

LCD Display
Main Data Display
•Flash rate value will be displayed in internal flashing or Exter-
nal trigger mode.
•Display will indicate “P” or “LCD” (in ON/OFF setting of LCD
backlight) in *Parameter setting mode.
*For details about Parameter setting mode, please refer to Pa-
rameter setting mode.
Sub Data Display
Internal Mode
•Phase Shift will indicate degrees of phase shift in internal flash-
ing mode. To change the degrees of phase shift, press + or -
keys. The display will reflect the cumulative angle of phase shift.
•The flash duration time will be displayed when the RATIO key
is pressed. The flash duration time can then be increased or
decreased with the dial from 0 to 2.5 (0~2.5°) degrees.
External Mode
• In external trigger mode, the display will show the settings of
delay time. For details about changing these settings, please
see external trigger mode section.
FUNCTION INSTRUCTIONS
Mode Selection - To switch between INTERNAL, EXTERNAL and
PARAMETER menu, press and release the MODE key. For details
about Parameter setting mode, please refer to Parameter setting
menu section.
Internal Flashing Mode
Changing Units of Measure in Internal Mode - To change the
measuring units from FPM to Hz, press and release the SET key.
Units will alternate with each press and release.
Flash Rate (Frequency Setting) in Internal Mode -
You can set the flash rate by turning the dial in the center of the
unit. To increase the flash rate, turn the dial in the clockwise direc-
tion. To decrease the flash rate, turn the dial in the counter-clock-
wise direction. For small adjustments, turn the dial slowly. For
quick adjustments, rotate the dial quickly. The flash rate range
and resolution will be different according to the selected measur-
ing range.
One function of a stroboscope is to provide a “stopped” image
of a rotating target when the flash rate of the stroboscope has
matched the rotational speed of the target object. The strobo-
scope will show a single image when the flash rate is set to a
lesser multiple of the true RPM (1/2,1/3,etc.) When the flash rate
is increased to a higher multiple (2,3,etc.), multiple images will
appear. To find the true RPM of the target object, reduce the flash
rate to a lower multiple until only one image appears.
2
Parameter
Icons
Sub
Data Display
Main
Data
Display
Units

Stopped Image:
Example
True
Rotational Speed
of Target Object
(rpm)
Flash Rate of
Stroboscope
(fpm)
Multiple
of True
Rotational
Speed
Number of
Stopped
Images
900 rpm
3600
2700
1800
900
450
300
4 times
3 times
2 times
1 time
1/2 times
1/3 times
4
3
2
1
1
1
Multiple/Divide by 2 Function - The flash rate can be doubled or
halved by x2 and 1/2 keys on the operation panel.
1. Doubling the flash rate(x2) Press x2 key to multiply the cur-
rent flash rate by a factor 2.
Note: The use of the x2 key will have no effect when multipli-
cation of the current flash would result in a value that exceeds
the maximum flash rate range. After the flash rate changes, it
becomes the new value based on the set display resolution.
Therefore, the rate may likely not return to the original frequen-
cy, even if the “1/2” key is pressed.
2. Having the flash rate(1/2) Press “1/2” key to divide the cur-
rent flash rate by a factor of 2. Operation Indication
Note: The use of the 1/2 key will have no effect when the divi-
sion of the current flash rate would result in a value that goes
below the minimum flash rate.
After the flash rate changes, it becomes the value based on the
set display resolution. Therefore, the rate may likely not return
to the original, even after pressing the x2 key.
Phase Shift (Angle) - First, press ‘SET” key, then enter this
mode. When the rotation speed of the target object and the
flash rate of the DT-362 becomes equal, the phase shift func-
tion can be used to delay the flash so that the image will appear
to rotate incrementally. The phase shift angle can be increased
or decreased 3°, each time the “+” or “-” keys are pressed or
the adjustment dial is turned CW or CCW. The sub display will
show the cumulative angle of the phase shift.
Flash Duration (Brightness) Settings
The flash duration, RATIO key, can be set within the range of 0.1°-
2.5° over a 360° period with a resolution of 0.1°.
When the flash duration is lengthened, the brightness of the flash
will be increased, however the image of the target object may
appear slightly out of focus. When the flash duration is shortened,
the brightness will be decreased, yet the image of the target ob-
ject will become more focused.
To change the flash duration in either Internal or External modes,
first press the “RATIO” key. Once pressed, “Flash Time” will ap-
pear with the current flash pulse duration ratio in the sub display.
The flash pulse duration can now be modified.
To set the flash pulse duration while in the modifiable mode;
press “+” key, or turn the dial in the clockwise direction to in-
crease the flash pulse duration by 0.1° increments.
Press “-” key, or turn the dial in the counter clockwise direction to
decrease the flash pulse duration by 0.1° increments.
3
1/3

External Trigger Mode
External trigger mode will allow the flash rate of the DT-362 stro-
boscope to be controlled by an external signal, such that the flash
rate will automatically increase or decrease when the signal is al-
tered, so that it may remain in unison with the speed of a chang-
ing target.
Mini-USB External Signal Input:
1. GND
2. External Pulse Signal Input
3. Sensor Power Outlet: +15 V 50 mAh
External Pulse Input: The input signal requires the following char-
acteristics.
Input frequency: 60-120,000 fpm (1-2000Hz)
Pulse width must be greater than 50 µs.
Note: When the external sensor input is utilized on battery-pow-
ered models, the AC power supply must be used for proper sen-
sor performance.
Additionally, there are several settings that can be adjusted in Ex-
ternal Trigger mode, including phase shift, delay time, and flash
duration.
The flash timing can be set by using the positive or negative edge
of an external trigger signal. Also the delay of the flash timing can
be set by time in (msec) or degrees (°).
Press “mode” once and the unit enters EXTER 1. In this mode,
frequency (HZ) or speed (FPM) automatically flash according to
the external trigger signal.
After setting the parameters, generally the detected object has an
advanced or lag phenomenon. To adjust, press the “+” or “-” for
fine-tuning, change the perimeter parameters, so that detected
object achieves a still image. In this setting process, the unit will
automatically save the last setting.
External Trigger Mode: LCD Display Information
The frequency of the external signal is measured each period,
while the latest external frequency measurement is updated ev-
ery 50 ms.
External Trigger Flash Delay Setting
A flash angle delay can be programmed into the DT-362 to delay
the flash after an external trigger signal is detected. The unit of
delay can be set to time (msec) or degree (°). Use “+” or “-”key
to alternate between the settings of delay angle or delay time.
Delay Time Setting
The delay time can be set to incorporate a delay from the external
pulse input to the flash output. The delay can be set from 0-999
ms with a resolution of 1 ms.
Note: Because of the existence of a delay in internal calculation,
the DT-362 flashes 60 µs after the external signal input. This re-
sults in the actual setting delay time having approximately +60 µs
added to the delay.
Example
Trigger: positive edge Delay Time: 10 ms
The DT-362 does not flash at the 1st trigger pulse as shown below
in the diagram, DT-362 flashes from the external trigger after 10
ms.
4
+
_
j k l

If the period of the external input is less than the setting of the
delay time, the delay time is ignored and the DT-362 flashes as if
the delayed time equals 0.
To adjust the delay time, press the “+” or “-” key. Or turn the dial
to set the delay time. Delay time will increase as the dial is turned
clockwise, and decrease as it is turned counter clockwise.
Delay Angle Setting
As the period of the external input is 360, the delay angle can be
set from 0°to 360°, by every 3°. Since the internal calculation time
is 60 µs, the actual delay time is as follows:
Delay angle setting/360° x period of external input + appox. 60 µs.
The DT-362 does not flash at the 1st trigger pulse as shown below
in the diagram.
Example: Trigger: positive Delay Angle: 36° 36/360=10
If the current period of external trigger input changes, the time of
the flash is not accurate, because the time is calculated based on
the previous measurement period.
If the current period of external trigger input is less than the previ-
ous period and the next trigger input occurs before the flash time,
the delay angle setting is ignored and the DT-362 flashes at the
delay angle=0°.
To adjust, press the “+” or “-” key. You may also use the adjust-
ment dial.
The delay angle increases as the dial is rotated to the right. The
angle settings will go to 0° as the angle increases past 359°.
Delay angle decreases as the dial is rotated to the left. The set-
tings will eventually go to 0° as the angle decreases past 359°.
Parameter Settings
To enter parameter setting menu, press “MODE” until the LCD dis-
plays “P”. When the display shows “P’, press the SET key to cycle
between the various parameter settings available (range, trigger
edge, delay time, LCD backlight, Auto Shut-off, Initial). To store
the settings and return to measuring modes, press the MODE key.
Measuring Range Setting
You can adjust the flash setting from the home view and also in
parameter mode if desired.
Trigger Edge Setting (External Modes)
In external mode, the trigger edge parameter will allow for select-
ing either the leading edge or trailing edge of the input pulse to
trigger the stroboscope flash.
In parameter mode, use the SET key to cycle to the Trigger Edge
setting parameter mode. To set the trigger edge as “Down Edge”
(trailing), press “ -“ key or turn the dial clockwise. To set the trig-
ger edge as “Up Edge” (leading), press “+” key or turn the dial
clockwise.
When trigger edge setting is set to “up edge”. The flash will oc-
cur on the leading edge of the input pulse (when delay setting is
zero).
External Pulse Signal from Machine/Sensor
vs. Stroboscope Flash
Up Edge
When trigger edge setting is set to “down edge”. The flash will
occur on the trailing edge of the input pulse (when delay setting
is zero).
External Pulse Signal from Machine/Sensor
vs. Stroboscope Flash
Down Edge
5

Back Light Setting
The LCD display of the DT-362 stroboscope has a backlight that
can be turned on or off in the parameter settings. Turning off the
backlight will conserve battery power. To adjust the backlight set-
ting, enter parameter mode and use the “SET” key to cycle to LCD
setting. Press “+” key to turn on the backlight. Press “-” key to
turn off the backlight.
Note: If the backlight is set to on, as a power saving feature, it will
automatically shut off after the set minutes if no keypad or dial
operation has occurred. The LCD backlight will turn back on with
keypad or dial operation.
Automatic Power-Saving Settings
LCD Back Light Off: If the backlight is set to on, as a power
saving feature, it can be adjusted to automatically shut off from
1 to 1000 seconds, if no keypad or dial operation has occurred.
The LCD backlight will turn back on with keypad or dial oper-
ation.
Factory Reset (Initial)
To reset unit to factory values choose “Yes” under Initial in the
parameter setting mode. Then press “SET”.
Mounting
To mount permanently, remove the two screws holding the trigger
handle. The threaded adapter will now be visible. Discard screws
and handle. With appropriate 1/4-20 UNC male thread connec-
tion, attach to stroboscope’s female threaded adapter. Hand tight-
en to secure.
SEALS USA, Inc.
Instruments Division Tel: [phone] Email: [email protected]