Motor & Engine Tachometer
CT-6710
With a variety of sensors, it is now possible to measure rotational speeds that were previously given up on.
The CT-6710 is a compact engine tachometer capable of accepting various sensor inputs.
Due to its small form factor, it is effective not only for engine and EV/HEV motor benches but also for measuring engine and EV/HEV motor RPM in actual vehicles.
It can accept inputs from 10 types of detectors, including ignition pulse detectors, gasoline and diesel engine RPM detectors, motor RPM detectors, and electromagnetic detectors, as well as ECU crank angle signals (irregular interval pulses). Additionally, an accelerometer and a super compact Electromagnetic Detector have been added to the compatible sensor lineup.
Even in cases where it is difficult to install detectors on actual vehicles, engine RPM measurement is possible through the input of ECU crank angle signals.
Please note: Depending on the type of engine and motor, measurement may not be possible or the measurement range may vary.
For engines and motors that have not been used before, please confirm with a demo unit.
For demo units, please contact your nearest sales office.
NP-3000 Series Accelerometer
The piezoelectric vibration detection method detects vibrations caused by the up and down movement of the piston. Due to its high sensitivity and wide frequency range, it is capable of measuring even smaller vibrations, making it possible to measure the rotational speed of diesel engines that could not be measured before.
MP-992 Ultra-Compact Electromagnetic Detector
It detects leakage magnetic flux from the rotating axis of motors and magnet ignition engines using electromagnetic induction. With a compact sensor head length of 13 mm, it can be installed in narrow spaces. It allows for stable measurement of motor rotation with simple installation.
Trigger Assist Mode
The ignition signal is contaminated by electromagnetic induction and noise from the ignition of other cylinders. By turning on the trigger assist mode, it automatically adjusts to the optimal level for detecting only the ignition signal, allowing for stable measurements even when the rotational speed changes.
Trigger Level Tracking Function
This is a function that reduces the trigger level in response to an increase in rotation speed. Please use it when the signal waveform becomes smaller and undetectable due to the increase in rotation speed. (Exclusive feature for the IP series)
Reduce unnecessary noise signals - Input division function
When periodic noise with an amplitude close to the ignition signal is input, it remains unstable even after adjusting the trigger level. By adding a frequency division function, it is converted into a stable periodic signal, enabling reliable measurements.
Separate analog rotation speed indicator (optional CT-0677)
This is a separate display device that responds to the request to observe the behavior of rotational speed with an analog meter needle. (Option: CT-0677) No power connection to the display device is required. You can easily use it by simply connecting the analog signal cable (included as standard with the display).
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Diverse output functions that capture transient phenomena with high-speed response.
Captures the transient phenomena of engine rotational speed with high responsiveness.
The analog output follows the acceleration and deceleration behavior within the conversion time of one cycle of the input signal plus 8 μs. The pulse output can be generated without delay through waveform shaping. Additionally, the CAN output function (optional: CT-0671) enables high-speed digital output.
Measuring engine speed using crank angle signal for ECU (Option CT-0672)
The crank pulse plate, which is the basis for the crank angle signal, has added teeth and missing teeth, resulting in the signal not being output at equal intervals, making it unsuitable for measuring engine speed.
Therefore, it enables measurement using crank angle signals by learning a pattern with non-constant intervals. (Option: CT-0672)
Lightweight and compact size that does not interfere with the workspace.
170(W) × 49(H) × 120(D) mm size
We pursued ease of use and compactness not only for engine benches but also for measurements on actual vehicles.Pulse output function for tracking analysis
The pulse output of DIRECT (for rotational synchronization signals) from the CT-6710 can be integrated into our DS series for tracking analysis.
Safe even when the engine is stopped: deceleration condition measurement function.
This is a function to set stop conditions when the detection pulse signal sharply decreases due to sudden engine shutdowns, etc.
The estimated stop time (ESTIMATE) reduces the analog output and stops based on the last detected signal cycle. The hold time (KEEP) stops the analog output at 0V after a pre-set time.Comparator output function for monitoring the state of the engine.
This is a function to set the conditions for engine run and overrun.
When the engine speed exceeds the set value for engine run, it is determined that the engine has started. If it exceeds the set value for overrun, it is determined that there is an engine abnormality, and a contact signal is output.For example, if the engine run is set to 500 r/min and the overrun to 6000 r/min, it will operate as shown in the left diagram.
User-friendly visibility and operability
High visibility allows for easy configuration of function settings in a menu format.
Settings for frequently used sensor types, pulse counts, and trigger levels can be configured quickly by using direct keys, including a rotary knob.High-speed digital data CAN output function (Option: CT-0671)
Baud rate (kbps) 125, 250, 500, 1000 Update Frequency (Hz) OFF, 1, 2, 5, 10, 20, 100, 1000 Outputs rotational speed data via CAN communication.
The maximum output update frequency is 1 kHz. Rotational speed data can be recorded using devices capable of CAN communication, such as a CAN logger.
| Input section | Compatible Sensor/ Rotational Speed Measurement Range |
IP-292/IP-296/IP-3000A/IP-3100, VP-202/VP-1220, NP-3000 series |
120 ～ 20,000 r/min |
|---|---|---|---|
| OM-1200/OM-1500, MP-992 *1 | 120 ～ 99,999 r/min | ||
| MP-900/MP-9000 Series (Electromagnetic Type) | 30 ～ 99,999 r/min | ||
| MP-9810/MP-9830, LG-9200/LG-930 *1, EXT(PULSE) | 0 ～ 99,999 r/min | ||
| Optional crank angle signal for ECU | 120 ～ 20,000 r/min | ||
| Sensor power supply (R03-PB6M) | 12 V ±10%, below 100 mA | ||
| CCLD power supply (BNC) | 18 V ± 1 V, 2.4 to 4.5 mA | ||
| Supply current to a constant current drive type sensor via the input connector (BNC) using coaxial. | |||
| Input frequency range | 0.1 Hz to 120 kHz for EXT(PULSE) | ||
| Display Section | method of representation | fluorescent display tube | |
| display size | 52.5 mm × 11.5 mm | ||
| display items | Rotational speed (average value displayed) | ||
| displayable range | 0 ～ 99,999 r/min | ||
| accuracy | within ±0.01 % FS (±1 count) | ||
| The factor value is set to 1.0000E+0. | |||
| display state | SIG IND: Lights up for each input signal detection. | ||
| Display digit count | up to 5 digits | ||
| Number of decimal places | OFF / Select from 1 digit | ||
| Analog Output | Number of output points | 1 (BNC connector) | |
| Output Items | Rotation and Speed | ||
| output range | 0 to 10 V | ||
| Range Setting | 1 to 99,999 r/min (settable in increments of 1 r/min) | ||
| 0.1 to 9,999.9 r/min (when decimal point display setting is enabled) | |||
| load resistance | more than 100 kΩ | ||
| responsiveness | Update within 8 μs after the cycle is determined. | ||
| Accuracy (Linearity) | ±0.1 % FS | ||
| Resolution | 16 bit | ||
| Pulse output | Number of output points | 1 (BNC connector) | |
| Output items (optional switching) | DIRECT (waveform shaping output), 0.5 / 1 / 60 [P/R] | ||
| Signal level | 0 - 5 V logic signal (Lo: below 0.4 V, Hi: above 4.5 V) | ||
| load resistance | more than 100 kΩ | ||
| comparator output | Output items (optional switching) | Engine run, overrun | |
| output range | 1 ～ 99,999 r/min | ||
| 0.1 to 9,999.9 r/min (when decimal point display setting is enabled) | |||
| Contact capacity | DC30 V/0.1 A | ||
| Connector (terminal block) | Phoenix Contact MVSTBR2, 5/4-ST-5, 08 | ||
| RS-232C | transfer speed | 9600 bps / 38400 bps | |
| Connector | ST60-18P(30) (Hirose Electric) | ||
| dedicated cable | PS-D10758 (Ono Sokki) | ||
| CAN (Optional CT-0671) |
Output Items | Rotation and Speed | |
| Baud rate | 125 kbps / 250 kbps / 500 kbps / 1 Mbps | ||
| output update cycle | OFF / 1 Hz / 2 Hz / 5 Hz / 10 Hz / 20 Hz / 100 Hz / 1 kHz | ||
| Connector | D-SUB9 pin (male) | ||
| Other functions | moving average | 2 to 720 times | |
| deceleration calculation | Method of selecting time or period. | Time: 1 to 1200 ms | |
| Cycle: ×1.5 / ×3 / ×5 / ×8 / ×16 | |||
| Pulse division | 1 ～ 120 | ||
| Trigger Assist | Automatic setting of the trigger level for pulse detection. | ||
| Trigger Level Tracking | Variable trigger level according to input frequency (specific function when IP sensor is selected) | ||
| resume function | Even when the power is off, the settings are remembered. | ||
| Condition Memory | Up to 5 types can be saved. | ||
| General Specifications | Power Supply | DC 9 ~ 28 V, 1.35 A or less | |
| External dimensions / Mass | 170 (W) × 49 (H) × 120 (D) mm / approximately 700 g
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| Operating temperature/humidity range | 0 to +50 ℃ *2 / 5 to 85 %RH (provided there is no condensation) | ||
| Storage temperature/humidity range | -10 to +60 °C / 5 to 85 % RH (provided there is no condensation) | ||
| Applicable Standards | CE marking | Low Voltage Directive: 2014/35/EU Standard EN 61010-1 | |
| EMC Directive: 2014/30/EU Standard EN 61326-1 Class 1 Industrial Environment | |||
| RoHS Directive: 2011/65/EU Standard EN IEC 63000 | |||
| FCC | 47 CFR 15 Subpart B Class A | ||
| Accessories | 4 rubber feet, AC adapter (100 to 240 V), user manual | ||
| Price | |||
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CT-0673
Panel mounting bracket
(excluding CT-6710) -
CT-0674
CT-6520 replacement panel mounting bracket
(CT-6710 not included) -
CT-0675
Protective handle
(excluding CT-6710) -
CT-0676
Light-blocking hood
(excluding CT-6710) -
CT-0677
analog rotation speed indicator
