Braun D124.1S2 - User Manual

Post Office Box 29, Mount Holly, N.C. 28120 USA
Phone (704) 822-2993 Fax (704) 822-1292
E-mail: BRAUNINST @ aol.com
Post Office Box 1106, D71301 Waiblingen
Phone (+49) 07151/956230 Fax (+49) 07151/956250
E-mail: info @ braun-tacho.de
Internet: www.braun-tacho.de
D124.1S2-Manual_EN_Rev03 2020_APR_28 1
Speed and Direction Monitor Series
D124.1S2
with analog output and setpoint alarm
Instructions and
Operation Manual
valid for serial nos.
exceeding 211600
Contents page
Specifications ....................................................................................................... 2
Instructions for Use
Short form instructions for the operation ................................................... 3
Error signals ............................................................................................... 3
Programming
Procedure ............................................................................................... 3, 6
Summary of programming steps ................................................................ 4
Input, display and direction performance ............................................ 7 - 8
Analog output ............................................................................................. 9
Setpoint alarm ............................................................................................ 9
Data Interface ............................................................................................. 9
Installation
Safety notes ................................................................................................ 5
Function diagram and terminal nos .......................................................... 11
Dimensions .............................................................................................. 12
Revision notes .................................................................................................... 12

Summary

Specifications

Design

Details on the physical design, enclosure, and terminal size.

Installation Conditions

Specifies ambient operating and storage temperature ranges.

Power Supply

Details input voltage ranges and power consumption for different versions.

Signal Input

Describes sensor input matching, impedance, and speed measurement sequence.

Accuracy

Specifies the measurement accuracy percentage and least significant digit.

Analog Output

Defines resolution, max load, and linearity error for the analog output.

Relay Outputs

Details breaking capacity and ratings for the SPDT relay outputs.

Display

Describes the 5-digit LED display characteristics.

Operating Instructions

Display Readings

Explains normal display operation and LED indicators.

Error Signals

Details error codes, such as '-E1-' for unauthorized access.

Response at Sensor Signal Interrupt

Describes how the instrument handles input signal interruptions.

Programming Procedure

Outlines the steps to enter and navigate the programming phase.

Installation

Safety Notes

Emphasizes adherence to standards and installation by qualified personnel.

General Instructions

Provides guidance on grounding, instrument handling, and signal lead routing.

EMI Compliance

Confirms compliance with Electromagnetic Compatibility regulations (CE).

Programming

Program Structure

Explains the PXX.xx addressing format for parameters.

Programming Procedure

Details how to enter, select, and modify parameters using the keys.

Group P00.xx: Data Access and Minimum Measuring Period

Covers access codes, lock status, and minimum measuring time settings.

Group P01.xx: Measurement Configuration

Details input scaling, frequency, and speed reference settings.

Group P02.xx: Display Performance and Direction Signal

Covers display updates, direction output, and reverse alarm settings.

Program Group P03.xx: Analog Output

Defines analog output span, zero level, and related parameters.

Program Range P04.xx: Speed Setpoint Alarm SP1

Covers setpoint definition, hysteresis, and alarm output conditions.

Program Range P05: Not Relevant

Indicates that Program Range P05 is not applicable.

Initial Parameters

References the default programmed parameters listed on page 4.

Function Diagram and Terminal Assignments

Terminal Nos.

Lists all terminal numbers and their corresponding functions and signals.

Marked Cable Ends

Identifies cable end markings for proper connection.

Dimensions

Revision Notes

Lists changes made to the manual across different revisions.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Braun D124.1S2 is a speed and direction monitor from the D124.1S2 series, designed for industrial applications requiring precise speed measurement, direction sensing, and alarm functionalities. It is an instrument that provides speed display, direction signal output, speed setpoint alarm output, and an analog output proportional to the speed, especially when used in conjunction with Braun's A5S3 series speed/direction sensors.

Function Description:

The D124.1S2 monitors speed and direction, providing a digital display of the measured speed in programmed units. It features a 5-digit red LED display with an adjustable decimal point, allowing for flexible presentation of speed values. The device also includes two SPDT relay outputs for setpoint alarms and direction signals. One relay can be assigned to either a setpoint alarm (SP1) or a reverse alarm (SP2), while the other is dedicated to the reverse alarm (SP2). An isolated and programmable analog output (0/4-20mA) provides a continuous signal proportional to the speed, suitable for integration into control systems.

The instrument's core functionality relies on time interval measurement over a variable number of input signal pulses. A programmable minimum measuring period ensures stable measurements, particularly with fluctuating variables, by averaging over the defined period. This period can be adjusted from 0.03 seconds up to 10.0 seconds, with a recommended standard of 0.4 seconds for most applications. Longer periods reduce the maximum allowable input frequency, while shorter periods allow for faster tracing of variations.

Direction sensing is a key feature, with the device detecting the sense of rotation and maintaining its last state when motion stops. The direction output can be forced into a preselected sense (forward or reverse) at speeds below a defined low-end level, providing a true "reverse run" meaning to the output. The device can also be configured to release a reverse alarm only after a minimum number of reverse pulses have been counted within an adjustable time period, preventing inadvertent alarms from slow reverse motions.

Important Technical Specifications:

• Design: Snap-on track enclosure for DIN 50022 rail 35 mm.
• Dimensions: Length 100 mm, width 104 mm (incl. terminal blocks), height 110 mm.
• Weight: Approx. 400 g.
• Enclosure Material: Plastics.
• Terminals Size: 2.5 mm².
• Ambient Temperature (Operation):
  • Standard model: 0°C to +50°C.
  • Model with suffix M (extended range): -20°C to +65°C.
• Ambient Temperature (Storage): -40°C to +85°C.
• Electrical Insulation Grade: I.
• Voltage Grade: I.
• Protection Grade: IP20 for terminals.
• Power Supply (Supply Voltage):
  • Version U1: 18-40 Vac/dc.
  • Version U1M: 20-40 Vac/dc.
  • Version U2: 85-265 Vac/dc.
  • Version U2M: 85-265 Vac/dc.
• Power Consumption: 5 W resp. 5 VA.
• Signal Input:
  • Matching speed/direction sensors series A5S3.
  • Response level on/off: >7 volts / <4 volts.
  • Input Impedance: 100 kohms.
  • Sensor Supply: Approx. 12 volts / max. 60 mA.
  • Speed Measurement Sequence: 30 msec to 10 sec (programmable).
• Accuracy: ± 0.005% of measurement + 1 in LSD.
• Analog Output:
  • Isolated and programmable: 0/4-20mA.
  • Resolution: 12 bit.
  • Max. Load: 500 ohms.
  • Linearity Error: 0.1%.
• Relay Outputs:
  • 2, each SPDT.
  • Breaking Capacity: Voltage min 10 mV, max 250 V AC/DC; Current min. 10 µA, max 2 A AC, 1 A DC.
  • Power Rating: Max 100 W, 250 VA into ohmic load only. Inductive loads require spark extinguishers.
• Display: 5 digits LED red, with adjustable decimal point, programmable.

Usage Features:

The D124.1S2 offers extensive programming capabilities, allowing users to tailor its operation to specific application requirements. Programming is done via front-panel keys (P, E, Δ, ∇) and involves navigating through program groups and steps.

• Display Customization: The display can be scaled to show speed in desired units and decimal positions. Users can also zero lesser significant digits to eliminate fluctuations caused by variable or signal source noise. The display update rate is programmable from 0.1 seconds up to 9.9 seconds.
• Analog Output Configuration: The high and low ends of the analog output span can be assigned to specific speed values, allowing for precise scaling of the 0/4-20mA output. The analog output zero level can be set as "dead zero" or "live zero."
• Setpoint Alarm (SP1): The setpoint alarm is programmable in the same terms as the speed display. Hysteresis bandwidth (as a percentage of the setpoint) and its position (above, below, or symmetrically around the setpoint) are adjustable, preventing rapid toggling of the alarm output. The alarm output's behavior during a "no-power" condition can also be defined.
• Starter Phase Functionality: A control signal to the "Starter" input can temporarily set the alarm output to a programmable condition for an adjustable period (0-999 seconds), useful during machine startup, especially for low-speed alarms.
• Direction Signal Control: The direction output can be assigned to "forward" or "reverse" signals during a "no-power" condition. At low speeds (below a defined threshold), the direction output can be forced to a specific state (no change, forward, or reverse), overriding the sensor output.
• Reverse Alarm Latching: The reverse alarm can be latched, requiring a control input (S2) to reset it.
• Data Access and Security: Programming access can be locked with a password number. If an incorrect code is entered, the display shows "-E1-", and further programming is rejected. The key function can also be temporarily unlocked for easier adjustments during installation.

Maintenance Features:

The D124.1S2 is designed for robust industrial use with minimal maintenance requirements.

• Installation Guidelines: The manual emphasizes careful installation according to DIN 57 411 / VDE 0411Sect 1, and IEC 348 standards, to ensure protection. Installation should only be performed by qualified personnel.
• Grounding: The ground terminal (PE) must be connected to a safe ground potential. The PE is internally separated from common zero but tied by a 100 k resistor.
• EMI Compliance: The unit complies with European Committee for Electrotechnical Standardization (CENELEC) regulations for Electromagnetic Compatibility (89/336/EWG), meeting DIN-EN 50081-2 and DIN-EN 50082-2 standards. This ensures reliable operation in electrically noisy environments.
• Signal Integrity: Signal leads must be carefully shielded and should not be bundled with power or relay control leads to prevent interference.
• Protection: Power supply and all input/output leads must be protected against voltage interference higher than specified operation data and electrostatic discharge. Terminals must be kept off all undue access.
• No Internal Adjustments: The instrument is not designed for internal servicing; connections and programming are all done externally. Users are cautioned not to open the instrument. If the enclosure must be removed, power should be switched off.
• Revision Notes: The manual includes revision notes detailing changes over time, such as extended operating temperature ranges for specific versions, obsolescence of voltage output, and changes to terminal block types, ensuring users have up-to-date information for maintenance and compatibility. For example, the 6.2009 revision notes that voltage output is obsolete and plug-in terminal blocks replaced fixed ones for serial numbers exceeding 211500.

Braun D124.1S2 Specifications

General

Brand	Braun
Model	D124.1S2
Category	Monitor
Language	English