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Universal Tachometer Line Driver Input Specification TDP-4921D/4931D
Digital Panel Meter • Signal Converter • Digital Indicator with Alarms • Rotary Pulse Meter

Specifications
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Dimensions
DXF Data
Inquiry
Manual
Software

Further evolution of the long-running TDP-39 series.
Fully backward compatible, enhanced performance with identical operability.

- Accepts line driver signal input from various pulse output sensors including rotary encoders, linear gauges, wire encoders, and positive displacement flow sensors.

- Applicable as a frequency meter, tachometer, flowmeter, or speedometer.

- Supports A/B phase signals for reversible/bidirectional measurement.

- Equipped with 2-channel comparator outputs as a standard feature.

- Diverse options available, including a 16-bit analog output with up to 0.5ms refresh rate and RS-485 communication. Also functions seamlessly as a control device.

- Compatible with configuration software LINKSHIP.

TDP-4921D
TDP-4931D

PeriomaticTM Computing Method High precision from ultra-low to high speeds. Instantly tracks rapid changes and sudden stops.

What is PeriomaticTM?

Supports Line Driver Input Signals

Compatible with line driver inputs (single-phase and A/B phase signals).
Enables reversible measurement when using A/B phase inputs.

Supports a wide array of pulse-output sensors, such as magnetic gear speed sensors, electromagnetic pickups (power generation type), flow sensors, rotary encoders, photoelectric sensors, and linear scales.

Gear Speed Sensor

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by COCORESEARCH

Electromagnetic Pickup

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by COCORESEARCH

Flow Sensor

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Rotary Encoder

Photoelectric Sensor

Linear Scale

View models supporting single-phase, A/B phase, separate add/subtract pulse, and direction signals.

 > Go to Product Page 

Continuous RS-232C data output support: Please contact us for details.
 > Go to Inquiry Page 

Wide Range & High Precision Measurement

Measures inputs from 0.0006 Hz to 4 MHz (single-phase) / 0.0006 Hz to 1 MHz (A/B phase) without range switching.
Input resolution has been enhanced to 26ns, and display accuracy has improved to 5ppm ±1 digit.

Fast & High-Precision Analog Output

The resolution of the optional analog output has been upgraded to 16-bit, and the output refresh time has been shortened to 0.5ms.

Settings can be easily adjusted using the 4-button array behind the front panel, or via the LINKSHIP PC software.

A) Unique COCORESEARCH mounting system: Enables single-operator installation from the front side.
B) Tool-less detachable front panel by pressing the left and right levers.

TDP-4921D (Front panel removed)

C) Input signal indicator LEDs
D) Individual ID setting switches for multi-unit setups *Applicable only with RS-485 option
E) HIGH comparator status LED
F) LOW comparator status LED
G) ENTER button
H) Value adjustment button
J) Digit selection button
K) MODE button

Two Configuration Methods Available

Choose between the TDP-4921D configured via push-switches, or the TDP-4931D featuring external digital switches (thumbwheel).
TDP-4921D

Set comparator thresholds and parameters via internal push-switches.

TDP-4931D

Set comparator values directly via the external digital switches.

Configuration Software LINKSHIP

Enables parameter management and report printing. Connect the main unit's RS-232C port to a PC using a communication cable (such as the CSS-M06 below).
TDP-4921D/4931D Rear Panel
Cable CSS-M06D09 etc.
LINKSHIP Interface
Verify & Print Settings List

Dual Range Function

Allows setting two independent scaling factors.
Toggle between dual applications with a single input, or display two different measurement units from one sensor source.

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2-Channel Comparator Output

Equipped with dual comparator outputs as standard. Utilizes contactless PhotoMOS relays suitable for both AC and DC, ensuring chatter-free switching ideal for PLC and computer inputs.

Versatile Averaging Functions

Supports pulse pre-scaling, time averaging, and moving average functions to optimize and smooth out your speed measurement profiles.

 > Read More 

Three Types of Hold Functions

Select and retain Current, Minimum, or Maximum values for display, digital output, or optional analog outputs.
 > Read More 

[Current Value]
Holds value at any given moment

[Minimum Value]
Holds the lowest detected value

[Maximum Value]
Holds the highest detected value

RS-232C Interface

Transfers measurement data to computers or interfaces with the LINKSHIP configuration software.

*Requires an optional RS-232C communication cable. Model: CSS-M06D09 (D-SUB 9-pin) or CSS-M06D25 (D-SUB 25-pin)
Cable Length: 2.5m
*Please inquire regarding continuous RS-232C data stream compatibility.

Options

Extended Comparator Output (2-Channel Add-on)

Adds 2 extra channels to the standard 2-channel comparator output, enabling up to a 4-channel configuration for multiple HIGH and LOW alarm settings.

4 Analog Output Variants

Selectable from 0-10V, 1(0)-5V, ±10V, or 4(0)-20mA (specify model at the time of order), featuring a high-speed update rate of up to 0.5ms.

BCD Parallel Output

Outputs a 6-digit parallel signal with polarity, available in open-collector, TTL, or CMOS interfaces.
Simplifies connection to PLCs, large remote displays, and digital printers.
*Shown with BCD connector installed

Custom Sub-assemblies & Enclosures [Customizable Solution: Contact Us]

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Flexible Measurement & Ch Customization

Available from Single Unit Orders
Convenient, Simple & Cost-effective

System-integrated Calibration
Modifications: Power Supply, Outputs, Comms

Calibration & Traceability Certs Available

Customization Examples [Available for Purchase]

Enclosure Unit

> Details

Enclosure Unit

> Details

Multi-CH Enclosure

> Details

Multi-CH with Indicator

> Details

HDMI Output + Software

> Details

Rack Mount Assembly

> Details

Related Products

For Flow Measurement
Flow Sensor Lineup >

For Rotation Measurement
Gear Sensor Lineup >

> Inquiry Form