ESR5-NV3-30 Eaton

ESR5-NV3-30 EATON Gate Module

Brand：EATON Model number：ESR5-NV3-30

Country of origin: the States Product weight：0.55kg

HS code：8538900000

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Product Details：

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The ESR5-NV3-30 is a multifunctional safety relay that provides a combination of instantaneous and time-delayed safety outputs. It is designed to monitor a variety of safety devices, including emergency stop buttons, safety gates, and light curtains. The "NV" designation indicates its specialized timing capabilities, allowing users to configure a specific time delay before the safety contacts open. This is essential for applications where a machine must come to a controlled stop or perform a specific task before power is fully removed. The unit is housed in a compact $22.5 \text{ mm}$ wide DIN-rail mountable enclosure, making it ideal for space-constrained control cabinets.

Product Parameters

Supply Voltage: $24 \text{ VDC}$ or $24 \text{ VAC}$ (nominal), $50/60 \text{ Hz}$ .
Safety Contacts (Instantaneous): 2 Normally Open (NO) safety contacts.
Safety Contacts (Delayed): 1 Normally Open (NO) safety contact with an adjustable off-delay.
Time Delay Range: Adjustable from $0.1 \text{ seconds}$ to $30 \text{ seconds}$ (as indicated by the "30" in the model name).
Auxiliary Contacts: 1 Normally Closed (NC) contact for signaling or diagnostic feedback.
Safety Integrity Level: Capable of meeting SIL 3 (IEC 62061) and Performance Level PL e (ISO 13849-1) requirements.
Power Consumption: Approximately $2 \text{ W}$ or $3 \text{ VA}$ .
Terminals: Plug-in screw terminals for easy installation and maintenance.
Operating Temperature: $-25\text{°C}$ to $55\text{°C}$ ( $-13\text{°F}$ to $131\text{°F}$ ).

Product Advantages

A primary advantage of the ESR5-NV3-30 is its Integrated Off-Delay Function, which eliminates the need for separate timing relays in the safety chain, reducing component costs and wiring complexity. The High Safety Rating ensures that it can be used in the most demanding safety applications, providing peace of mind for machine builders and operators alike.

The Compact $22.5 \text{ mm}$ Housing saves significant rail space in high-density panels. Additionally, the Plug-in Terminals allow for rapid replacement of the module without the need to disconnect individual wires, which minimizes machine downtime during maintenance. The Universal Input capability also means it can be used globally across various power standards.

Important Considerations and Precautions

When installing the ESR5-NV3-30, it is vital to ensure that the Time Delay Setting is correctly calculated to match the mechanical stopping time of the machine. Setting a delay that is too short can result in power being cut while the machine is still in a hazardous motion. Redundancy should be maintained in the wiring; for SIL 3/PL e applications, dual-channel wiring with cross-circuit detection must be used.

Technicians must verify that the External Fusing is installed to protect the safety contacts from welding in the event of an overcurrent. During commissioning, a Functional Test must be performed to ensure the relay trips correctly when the safety device is activated. Finally, never use the Auxiliary NC Contact for safety-related functions, as it is intended for non-safety diagnostic or signaling purposes only.

Product Applications

The Eaton ESR5-NV3-30 is widely implemented in industries where controlled deceleration is required for safety.

Machine Tooling: Controlling spindles or high-speed cutters that require a "stop-to-zero" period before a safety door can be unlocked.
Packaging Machinery: Managing conveyor belts that need to clear product or reach a safe position before the system fully de-energizes.
Robotic Cells: Providing a delayed stop signal to a robot controller to allow for a soft-stop rather than an immediate, damaging hard-stop.
Centrifuges and Fans: Ensuring that high-inertia equipment is allowed to slow down safely before personnel can gain access to the interior.
Printing Presses: Coordinating the braking sequence of large rollers to prevent mechanical stress during an emergency stop.

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