SICK RLY3-EMSS300 safety relay

Product basic information

Model code: RLY3-EMSS300, material number 1099973;

Configuration method: pure hardware wiring configuration, no software parameter settings;

Installation dimensions: width 18mm x height 124.6mm x depth 85.5mm, weight 150g, standard DIN rail installation, housing IP20 protection;

Wiring: Front spring wiring terminal, the whole machine is powered by DC24V (16.8-30V) SELV/PELV safe ultra-low voltage, with power consumption ≤ 2.5W.

Key parameters of safety level

Security level: IEC61508 SIL3, ISO13849-1 PL e/Category 4;

Probability of Hazardous Failure PFH=1.0 × 10 ⁻⁹/h;

Service life TM=20 years;

Shutdown type: Cat.0 (immediately cut off the load power supply);

Obtained certifications: CE, cULus, CCC, China RoHS, EAC, UKCA and other multinational compliance certificates.

Input port definition

2-channel safety input: dual channel wiring, built-in channel deviation monitoring+cross line short circuit detection, compatible with passive contact safety doors/emergency stop switches; Input rated 24VDC, input current 4-6mA, two buttons trigger synchronously with a permissible time difference of ≤ 3s; built-in PNP test pulse output (3 channels, pulse width 2ms, interval 40ms), automatically detects cable short circuits and disconnections.

1-channel multifunctional input: choose one, automatic/manual reset access or EDM external load feedback monitoring (contactor auxiliary contact feedback), voltage specifications are the same as safety input.

Reset mode: Supports two wiring configurations: automatic reset and manual reset.

Output port configuration

1. Three safety normally open contacts (main power output)

The contact is a forced silver gold-plated contact with a rated voltage of 10V~230V AC/DC universal;

Single rated 6A, maximum total current limit of 12A for three channels;

The response time for safety circuit disconnection is 12ms;

Mechanical lifespan of 10 cycles of on-off, overvoltage category III, withstand voltage of 6kV.

2. Two non safe push-pull diagnostic outputs

Short circuit protection type semiconductor output (PNP/NPN dual-use), used for PLC fault signal acquisition:

PNP output maximum 120mA, NPN suction ≤ 15mA, high level ≥ Vs-3V, low level ≤ 3V.

Environmental and Electrical Conditions

Temperature and humidity: working -25 ℃~+55 ℃, storage -25 ℃~+70 ℃, air humidity ≤ 95%, no condensation;

EMC performance: Complies with the complete set of IEC industrial electromagnetic emission and anti-interference standards, and can be used in conventional industrial control cabinet environments.

Applicable scenarios and product features

Adapter: Only supports passive mechanical contact type safety sensors (emergency stop button, mechanical safety door switch), not compatible with OSSD semiconductor grating;

Core functions: dual channel fault identification, cable short-circuit self-test, EDM load feedback monitoring, optional manual/automatic restart interlock;

Application: Emergency stop circuit for machine tools and automation equipment, safety protection door safety cut-off control.