Ono Sokki SE-1520 Operating Manual

Gasoline Engine Tachometer
Operating Manual
• Before attaching the detector or performing wiring work, be sure to
stop the engine under measurement.
• During measurement, never get close to the engine because a part of
ROTATING OBJECT
you body or cloth may be caught.
1.Overview
The SE-1520 is a tachometer designed for gasoline engines with any number of
cylinders.
2.Operations
• Connect the signal cable of the detector (IP-292 or IP-3000) to (4) SIG IN.
• Using the switch (5), select the detector to be used: IP-292 or IP-3000.
• For the detector, clamp the battery side (positive side) of the primary lead of the
ignition coil. Note that, if the power cable is clamped in mistake, rpm measure-
ment will be disabled.
• The switch (6) is a power switch and a number-of-cylinders selector switch. When
the power is turned ON, select the number of cylinders according to the engine
under measurement. Set the switch to the same position for each of the following:
1-cylinder 2-cycle engine and 2-cylinder 4-cycle engine
2-cylinder 2-cycle engine and 4-cylinder 4-cycle engine
3-cylinder 2-cycle engine and 6-cylinder 4-cycle engine
• In addition, depending on the specification of an ignition coil, rpm may be dis-
played twice. In this case, please change a setup of the number of cylinders.
• When you turn ON the power using the switch (6), the pilot lamp (PL) (7) goes
on. When the engine starts, the indicator (IND) (8) goes on and the rpm meter (10)
indicates the engine rpm.
If selection of the number of cylinders is correct, the engine rpm can be read
directly.
• If the indicator (IND) (8) does not go on, check the connection between the detec-
tor and SIG IN (4) and detector attachment. When the IP-3000 is used, adjust the
level using LEVEL ADJUST (9).
(5)
144
DC12 or 24 V
OUTPUT
IP-3000 IP-292
SIG IN
ANALOG PULSE
(1) (2) (3) (4)
3.OUTPUT Connection
When using the analog output (2) or pulse output (3), connect it to each instrument
using the supplied cable.
Both outputs are float-grounded and insulated from case of the the main unit.

3.1 ANALOG OUTPUT

Outputs a 0-10V analog signal with respect to 0-10,000 r/min. Connect the white
cable to the positive side and the green cable to the negative side to provide a
load of 10 kΩ or more. Be careful not to short-circuit the output.

3.2 PULSE OUTPUT

Outputs a square wave with 8ms pulse width and 5V amplitude after converting
the input signal into pulses, 1 pulse for each 2 rotations. Connect the white cable
to the positive side and the green cable to the negative side.
SE-1520

Warning

(7) (8) (9)
( 11 )
181
ONOSOKKI
SE-1520
ENGINE TACHOMETER
5
4 6
3
PL IND
2
LEVEL
ADJUST
1
0
x1000
CYLINDER 8
r/min
SELECT
6 3
5
OFF
2 4 4CYCLE
3
2
1 2CYCLE
(6) (10)

4.Specifications

Applicable engine
Measurement range
Rpm meter
Power supply
Current consumption : About 200mA (when operating on 12VDC)
Operating
temperature range
Dimensions
Output signal
Analog output
Output voltage
accuracy
Pulse output
Accessories
5.Cable wiring diagram
DC12 OR 24 V
1
+
Red
Connectors and manufacturers
7
8
Connector plug
9
10
Connector receptacle
Manufacturer
Since this product has been tested through a series of strict inspections and a complete
program of quality control, issuance of the test qualification has been omitted.
1. This product is covered by a warranty for a period of one year from the date of purchase.
2. This warranty covers free-of-charge repair for defects judged to be the responsibility of the manufac-
turer, i.e., defects occurred while the product is used under normal operating conditions according to
descriptions in this manual and notices on the unit label.
3. For free-of-charge repair, contact either your sales representative or our sales office nearby.
4. The following failures will be handled on a fee basis even during the warranty period.
(a) Failures occurring through misuse, mis-operation, or modification
(b) Failures occurring through mishandling (dropping) or transportation
(c) Failures occurring through natural calamities (fires, earthquakes, flooding, and lightening), environmental
disruption, or abnormal voltage.
* For repairs after the warranty period expired, contact your sales representative or our sales office nearby.
: 2-cycle engines (1, 2 or 3 cylinders)
4-cycle engines (2, 3, 4, 5, 6 or 8 cylinders)
: 2-cycle engines
1 or 2 cylinders 500 to 10,000 r/min
3 cylinders 500 to 8,000 r/min
: 4-cycle engines
2-5 cylinders 500 to 10,000 r/min
6 cylinders 500 to 8,000 r/min
8 cylinders 500 to 6,000 r/min
: Class 1.5, 100mm wide angle meter
: 12VDC or 24VDC (negative ground)
: 0°C to +40°C
: 180(W) × 121(H) × 144(D)mm
: Single-ended float-ground for both outputs
: 0 to 10V voltage (with respect to 0 to 10,000 r/min)
: ±0.2% / full scale (25°C)
: Zero
: ±0.3% / full scale (25°C)
Span
: ±0.2% / full scale or less
Linearity
Ripple : 250mVp-p or less (5000 r/min)
Output impedance : 1Ω or less (R.T)
Response : 0.5 sec. or less
(10 to 90% of full scale)
Connectable load : 10 kΩ or more
(ground common to pulse output)
: Output waveform : Square wave with 8ms pulse width
(Outputs the input signal, 1 pulse for
Voltage : High level
: Analog output signal cable (1.9m) ×1
Pulse output signal cable (1.9m)
Power cable (3.4m)
Operating manual
ANALOG
2 A C
B
Chassis
ground
+
– –
Black White Green
Power supply ANALOG
RM12BPG-2S R03-PB3M
RM12BRB-2P R03-R3F
Hirose Electric Tajimi Electronics
I Omission of Test Qualification Issuance

Warranty

*Outer appearance and specifications are subject to change without prior notice.
HOME PAGE: http://www.onosokki.co.jp/English/english.htm
each 2 rotations.)
About 5 V
Low level About 0.3 V
Output impedance 4.7 kΩ or less
×1
×1
×1
PULSE
A C
B
Chassis
ground
+
–
White Green
PULSE
R03-PB3M
R03-R3F
Tajimi Electronics
WORLDWIDE
Ono Sokki Co., Ltd.
1-16-1 Hakusan, Midori-ku,
Yokohama 226-8507, Japan
Phone : 045-935-3976
Fax : 045-930-1906
E-mail : overseas@onosokki.co.jp