Why Choose the Finder 99.01.9.060.90 LED and Diode Suppression Module?
The Finder 99.01.9.060.90 is a compact and reliable red LED indication and diode suppression module designed for industrial DC relay control circuits. As part of the established Finder 99 Series coil indication and EMC suppression module range, it combines visual relay coil status indication with protection against inductive voltage transients generated during relay switching.
This module features an integrated red LED indicator and a flyback diode. The LED illuminates when the relay coil is energised, providing a convenient visual indication of the control circuit status. The diode suppresses the reverse voltage spike generated when the relay coil is switched off, helping protect connected PLC outputs, electronic switching devices and other sensitive automation equipment.
With an operating voltage range of 28–60 V DC and a standard-polarity configuration with positive connected to terminal A1, the Finder 99.01.9.060.90 is suitable for DC relay systems operating within this voltage range, including nominal 48 V DC applications. Its compact plug-in construction allows straightforward installation into compatible Finder 96 Series relay sockets, making it a practical accessory for industrial control panels and machine automation systems.
Key Advantages
- Compact LED indication and diode suppression module for industrial relay applications.
- 28–60 V DC operating voltage range suitable for low-voltage DC control circuits.
- Integrated red LED indicator provides clear visual confirmation of relay coil energisation.
- Built-in flyback diode suppresses reverse voltage transients during relay coil de-energisation.
- Standard-polarity configuration with positive DC supply connected to terminal A1.
- Helps protect PLC transistor outputs and electronic control devices from inductive voltage spikes.
- Compatible with Finder 96.72 and 96.74 relay sockets.
- Plug-in installation simplifies electrical panel assembly and maintenance.
- Helps reduce electromagnetic interference (EMI) associated with relay coil switching.
- Compact construction requires minimal additional space inside electrical control panels.
Key Features
- Finder 99 Series coil indication and EMC suppression module.
- 28–60 V DC operating voltage.
- Red LED for relay coil energisation indication.
- Integrated recovery diode for inductive transient suppression.
- Standard polarity: positive supply connected to terminal A1.
- Designed specifically for DC-operated relay coils.
- Suppresses reverse voltage peaks generated when the relay coil is switched off.
- Compatible with Finder 96.72 and 96.74 relay sockets.
- Suitable for use with Finder 56.32 and 56.34 industrial power relays through compatible sockets.
- Blue module housing for identification within electrical control panels.
- Plug-in mounting eliminates the need for separate suppression component wiring.
- Flyback diode suppression can increase relay release time compared with an unsuppressed coil.
- Suitable for industrial automation, machinery control and electrical switching applications.
Technical Specifications
- Manufacturer: Finder
- Series: 99 Series Coil Indication and EMC Suppression Modules
- Model: 99.01.9.060.90
- Product type: LED indication and diode suppression module
- Module function: Relay coil indication and transient overvoltage suppression
- Operating voltage: 28–60 V DC
- Supply type: Direct current (DC)
- Indicator type: LED
- LED colour: Red
- Suppression component: Recovery diode
- Suppression method: Flyback diode / back-EMF suppression
- Polarity: Standard polarity
- Positive connection: Relay coil terminal A1
- Negative connection: Relay coil terminal A2
- Compatible relay sockets: Finder 96.72 and 96.74
- Associated relay series: Finder 56 Series
- Associated relay models: Finder 56.32 and 56.34
- Mounting type: Plug-in module for compatible relay sockets
- Housing colour: Blue
- RoHS compliance: Compliant
- EAN: 8012823104621
Reliable DC Relay Coil Indication and Back-EMF Protection
Industrial relay coils are inductive electrical components that store energy in a magnetic field while energised. When the supply voltage is removed, the collapsing magnetic field can generate a high reverse voltage transient capable of damaging sensitive electronic switching components or creating electromagnetic interference. The Finder 99.01.9.060.90 uses an integrated recovery diode to provide a discharge path for the stored coil energy, limiting voltage spikes and helping protect connected control equipment.
The module also incorporates a red LED indicator that provides immediate visual confirmation when voltage is applied to the relay coil. This makes it easier for maintenance engineers and panel builders to identify energised relay circuits and troubleshoot electrical faults. The module uses standard DC polarity with positive connected to terminal A1. Because diode suppression allows coil energy to dissipate more gradually, it can increase relay release time. Applications requiring rapid relay release should consider a suitable alternative suppression method, such as a varistor or RC network.
Typical Applications
- Industrial electrical control panels and switchgear assemblies.
- PLC transistor output protection and relay interface circuits.
- 48 V DC relay control systems.
- Finder 56 Series industrial power relay installations.
- Manufacturing machinery and automated production equipment.
- Motor control and auxiliary switching circuits.
- Building automation and HVAC control panels.
- Electrical distribution and control cabinets.
- Relay coil status monitoring, maintenance and fault diagnosis.
