Braun Speed Monitor, type E16521D.1
This monitor can be used as alternative to type E16651D.1 ,but you do need 2 pieces of this monitor E16521D.1 to have the same functionality as one E16651D.1
Weight per unit: 0,250 kgTariff no.: 90299000Country of origin: GERMANY
JAQUET 830A-36889 PC-T400
Original Jaquet cable is obsolete/discontinued due to Jaquet has stopped manufacturing the T4xx, T5xx and T6xx units these cables are used to. Functional replacement here.Also please check replacement units for the obsolete units:Replacement of Jaquet T401.00Replacement of Jaquet T501.00Replacement of Jaquet T601.00
JAQUET T411 Tachometer, Display; 4..20 mA outputMPN = 383Z-05318Lead time can be 50-70 weeks currently
Item is temporarily not available before Q3/2024
Jaquet T411.00 · 383Z-05318· single-channel speed transmitter with display· 0-35 kHz· speed signal to relay, open collector and analogue output· suitable for active and passive sensors
Jaquet T411 is a Single Channel Tachometer speed switch with a display which converts absolute speed into an analogue signal.
This unit will measure from 0-1 Hz all the way and up to 35 kHz. T411 gives a 4-20 DCmA output, which can be configured with the included Windows software package. Jaquet T411 features a single changeover relay and includes 2 limits (A/B) with programmable hysteresis. The T411's adaptive trigger provides high noise immunity, giving a fast response to over-speed conditions.
Features of T411
T411.00 = Tachometer Only w/4-20 DCmA Output and 1 Relay
Converts absolute speed into an analogue signal
10-30 DCV Power Supply
Includes 2 limits (A/B) with programmable hysteresis
Isolated signal input with automatic trigger level adjustment
Built-in isolated sensor supply with sensor monitoring
Open collector output of sensor frequency
Pluggable terminals
Configuration and status via included Windows software
Accuracy class 0.05% for limits & 0.5% for analog signals
Advantages of T411
Fast response to over-speed conditions
Germanischer Lloyd’s and ABS approval for marine applications
0/4…20 mA or 0/2…10 V analogue output with rising or falling characteristics
Adaptive trigger provides high noise immunity e.g. with electromagnetic sensors
Digital input for direct treatment of frequency signals
2 possible relay configuration sets (e.g. for start-up bridging, controlled via binary inputs)
Pluggable terminals
Integrated 2 or 3 wire sensor monitoring and system watchdog
JAQUET T401.00 under MPN: 383Z-05307 with 4..20mA output
Disontinued and not available from manufacturer anymore, since October 2024
Alternative to T401.00 Jaquet is available:
Replcement can be found here, SpeedSys T10 is an upgraded version and designed to replace T401 which has been made obsolete by Jaquet / TE.**Please note product image is T401 with T411 display, we have this setup also as a replacement on one unit here.
JAQUET T500 DualTach - 2 Channel Measurement Monitoring Device
Few pieces are available. 384Z-05600 (T501.50)
T501.50 AC 90...270VAC, 2 Channel Measurement Device:
Features:
High accuracy speed measurement: 0.002% for limits and 0.25% on the analogue output.
2 frequency + 2 binary inputs 2 analogue, 4 relay and 2 Open Collector outputs
Sensor monitoring for all sensor technologies
Ethernet interface - configuration via Windows software
Extensive parameter and limit setting possibilities
Programmable logical, diagnostic and measurement functions
Supply 90..270 VAC Plug in terminals
Successor product is SpeedSys T20
SpeedSys 200 - Transmitter & Overspeed Protection
The SpeedSys 200 stands as a pinnacle of innovation in the domain of rotating machinery protection, embodying a compact and efficient solution for overspeed detection. This system distinguishes itself through a design philosophy that prioritizes safety from the onset, diverging from traditional methods reliant on long-term proven usage. By incorporating a SIL-rated mechanism, it guarantees a high level of reliability and safety with minimal spatial requirements.
SIL 2 certified protection system
Designed for Versatility – with 1oo1, 1oo2, 2oo2 and 2oo3 configurations
Suitable for all common type sensors:- Hall-effect sensors- Electromagnetic sensors- Proximity sensors
Super fast 8 ms system response time.
Atex / IECex certified for Zone 0 installation.
“SpeedSys 200 is a Game Changing Innovation for SIL rated overspeed protection“
Technical Specifications
Sensor Inputs: 3 separate sensor inputs for different types of sensors
Outputs: 2 Safety relays, 1 additional relay, 4-20 mA & digital frequency output
LED Status indicators
Measurement Accuracy: 0.1%
Power Supply: 24 V DC (with 2 redundant power supplies)
Mounting: DIN Rail mountable
Housing: Polyamide
Applications suitable to
The SpeedSys 200 Overspeed Protection System architecture is designed to suit a wide range of applications. Most common & typical applications include the following:
Gas Turbines
Wind Turbines
Small & Micro Turbines
Marine Applications
Compressors and pumps
Emphasizing a "Safe by Design" approach, the SpeedSys 200 eschews the conventional reliance on historical data, which often necessitates extensive periods to establish reliability and complicates the process of recertification following any modifications. This forward-thinking design strategy ensures that the system remains adaptable and easy to update or recertify, thereby providing a resilient safeguard against overspeed conditions without the constraints of past methodologies.
Up to date Overspeed Protection System
Engineered to serve a broad spectrum of machinery, the SpeedSys 200 is versatile enough to offer cost-effective and reliable overspeed protection for singular applications, while also supporting the construction of redundancy and voting structures for applications demanding higher reliability or availability. Its applicability spans an impressive array of equipment, including micro turbines, wind turbines, compressors and pumps, aeroderivative and conventional gas and steam turbines, and even marine machinery.This innovative approach to machinery safety, coupled with the system's adaptability and compact form factor, ensures that the SpeedSys 200 can deliver advanced protection across a diverse range of settings, thereby safeguarding critical machinery against the potentially catastrophic consequences of overspeed conditions.
The SpeedSys 200 emerges as a paragon of certified safety and adaptability, engineered to fulfill the stringent specifications of SIL 2 certification for reliable overspeed protection. This system distinguishes itself through its rapid response capabilities and a state-of-the-art self-monitoring framework, which extends the intervals between tests while providing ample safety outputs to ensure consistent operation under a variety of conditions.Emphasizing adaptability, the SpeedSys 200 is designed with a minimal technical footprint, allowing it to seamlessly integrate into both field enclosures and control room environments. Its compatibility with industry-standard inputs and outputs simplifies the process of integration and retrofitting, making it a versatile choice for a wide array of industrial settings.A notable innovation within the SpeedSys 200 is its implementation of isolated inputs. This feature effectively removes the necessity for external isolators or barriers, streamlining the installation process and diminishing the likelihood of failure modes. Additionally, it enhances the system's ability to monitor sensors, providing an added layer of reliability and safety to the overspeed protection mechanism.
SpeedSys 200 - Features
Certified Safety: The SpeedSys 200 is engineered to comply with SIL 2 certification standards for overspeed protection. It boasts exceptionally quick reaction times, advanced self-monitoring capabilities allowing for longer intervals between tests, and numerous safety outputs to ensure robust protection.
Designed for Versatility: With its compact technical footprint, the SpeedSys 200 is adaptable for both field enclosures and control room settings. It supports industry-standard inputs and outputs, facilitating straightforward integration and retrofitting across various industrial applications.
Isolated Inputs: The system features isolated inputs, negating the need for additional isolators or barriers in the installation process. This innovation not only reduces potential failure modes but also enhances sensor monitoring capabilities, contributing to the overall reliability and efficiency of the protection mechanism.
Replacing units:
FTFU 3024-E04 obsolete / SpeedSys 200 is an alternative
SpeedSys T11 – 1‑Channel Speed Monitor and Switch with Display
Functional replacement for Jaquet T411 and T412
The SpeedSys T11 is a modern, single‑channel speed monitoring and switching device designed to replace legacy Jaquet T411/T412 units. It provides accurate speed measurement, relay output for switching or alarm functions, and an integrated display for local monitoring.
Key Features
1‑Channel Speed Monitoring – Measures rotational speed from a single sensor input.
Integrated Display – Real‑time speed readout for local monitoring and verification.
Sensor Compatibility – Works with 2‑wire passive (VR/MPU) and 3‑wire active (Hall‑effect/proximity) sensors.
Analog Output – High‑accuracy 4–20 mA output for PLC or control system integration.
Relay Output – 1× SPDT relay for overspeed/underspeed or alarm indication, fast response under 4 ms.
Diagnostic Functions – Monitors sensor health, detects open‑ or short‑circuits, and provides status indication.
Modern Configuration – Fully adjustable limits and parameters using onboard controls or digital interface.
Compact Industrial Design – Rugged housing for panel mounting, low power consumption, and wide operating temperature range.
Technical Summary
Specification
SpeedSys T11
Measurement Channels
1 (single‑channel)
Speed Range
Approx. 0.025 Hz to 35 kHz
Measurement Accuracy
±0.05 % for relay switching, ±0.1 % for analog output
Analog Output
4–20 mA, 16‑bit resolution
Relay Output
1× SPDT, fast response <4 ms
Supply Voltage
24 V DC (18–31 V), reverse‑polarity protected
Operating Temperature
−20 °C to +60 °C
Mounting
Panel‑mount or DIN‑rail compatible
Typical Applications
Turbines, compressors, motors, marine equipment, industrial automation
Benefits
Drop‑in replacement for Jaquet T411/T412 with modern electronics.
Fast, precise speed switching with integrated display.
Improved reliability and diagnostics for industrial and marine use.
Compact design for easy retrofit and integration.
SpeedSys® T10 to replace Jaquet T401
MPN: SSYT10-000-XXX
SpeedSys® is a tachometer (Speed transmitter, monitor & switch)
The SpeedSys T10 is a single-channel speed monitor and switch that delivers speed-monitoring functions to rotating equipment. It converts the signals from speed sensors to processed outputs. Its small technical footprint allows for a low-impact installation, to enable speed monitoring to a wide range of applications. The T10 is part of the SpeedSys tachometer series with the Speedsys T20 and the SpeedSys T30.
Functions: Speed, overspeed, underspeedInputs accepted: Hall effect sensor, electromagnetic sensorOutputs: 1x 4-20 mA analog output, 1x open collector frequency output
Relay: 1x DPST relay, 1x SPST relayInterface: Modbus TCPHumidity protection: Conformal coatingHousing: DIN rail with push-in connectorsCertifications: CE, UKCA, DNV
The SpeedSys T10 is used as a monitoring and switching device for speed conditions on rotating machinery. Typical applications of T10 are:
Aeroderivatives
Micro turbines
Wind turbines
Gas- and steam turbines
Hydro turbines (Kaplan, Francis, Pelton)
Compressors
Expanders
Marine applications
Elevators
General automation
If you were looking after Jaquet (TE) T401 has been made obsolete = discontinued. You can extend the life of the current installations simply swapping a T10 on place!
The SpeedSys T10 is a functional replacement for the T401 series.
Jaquet T401 replacement by SpeedSys T10 by IstecThe SpeedSys T10 is developed to replace the Jaquet transmitter series declared obsolete by manufacturer TE connectivity (Jaquet).
SpeedSys T10 can be used to replace the following Jaquet parts: T401 series, T402 series, FTW113 DC 24I, FTW113 DC 24U, FTW123 DC 24, FTV 1398 Line driver.
SpeedSys T10 and consult the datasheet for all deviations and to assess suitability for your application. If you have any questions about the conversion, please consult your Istec representative.
Disclaimer
The SpeedSys T10 has additional features, but some functionalities deviate from the Jaquet T401.
Additional features:
Remote reset
TCP Modbus
Marine class certification
Dual relay output
Deviations
Not suitable for 2-wire Hall sensors
Not suitable for Namur sensors
No voltage (0-10 V) output option
Key advantages of the new SpeedSys T10 tachometer products:
Easy replacement: Our new tachometers are designed to be a direct replacement for the Jaquet T-series. Minimal modifications are required during installation, saving time and resources.
Enhanced functionality: Our new tachometer line features several improvements to boost operational efficiency, including enhanced relay features and Modbus TCP. Please refer to the datasheet for more information.
Istec SpeedSys® T20 – Dual-Channel Replacement for Jaquet T500 / T600 Series
The Istec SpeedSys® T20 is a high-performance, two-channel speed monitor and switch, designed as a modern replacement for legacy tachometers, including the Jaquet T500 and T600 series.
Building on the reliability of the SpeedSys product line, the T20 offers advanced signal processing, flexible configuration, and rugged industrial design. It is ideally suited for monitoring redundant or dual-sensor setups, providing secure and accurate speed data for critical rotating equipment.
🔁 Replacement Compatibility
✅ Jaquet T500 Series
✅ Jaquet T600 Series
✅ Other dual-channel tachometers (consult datasheet for specifics)
🚀 Key Features
Dual sensor input (2-channel)
Flexible switching logic (AND / OR / fallback)
Modbus TCP communication
Marine class approval
Compact DIN-rail housing
Remote reset functionality
Dual relay outputs for alarm/control integration
⚙️ Applications
Ideal for machinery where redundancy, reliability, and modern digital connectivity are required:
Gas & steam turbines
Compressors
Expanders
Marine propulsion systems
Microturbines
Wind turbines
General rotating equipment
✅ Upgrade Path
For users of:
Jaquet T401 → SpeedSys T10
Jaquet T500 / T600 → SpeedSys T20
