S1SD-1FI-1R Signal Conditioning Module

Product parameters

Power supply: Rated voltage 16.8... 31.2V DC (nominal 24V DC), power dissipation ≤ 1W, ripple ≤ 10%.

Input (field side) : The connection terminals support 2-wire or 3-wire sensors, with an input frequency of 10 mHz... 50 kHz, input current 2 mA, threshold configurable.

Output (control side) : Relay contact output (Form C), switching capacity 250 V AC / 2 A or 30 V DC / 2 A, mechanical life 10^7 times, electrical life 10^5 times, response time < 100 ms.

Performance indicators: Frequency monitoring accuracy ± 0.1%, startup coverage time configurable (DIP switch), restart suppression function, software configuration supported, LED status indication.

Isolation and Safety: Input/output galvanic isolation (1.5kV), protection class IP20, in compliance with SIL 2 (IEC 61508), electromagnetic compatibility complies with EN 61326-1:2013.

Certification: CE, ATEX (II 3G Ex nA IIC T4 Gc), IECEx, cULus, compliant with 2014/34/EU (Equipment Directive) and EN 60079 series, applicable to Zone 2/ Div.2.

Mechanical parameters: Dimensions 12.5 x 106 x 115 mm, weight approximately 58 g, installed on 35 mm DIN rail, screw terminal (maximum 2.5 mm²), ambient temperature -40... 70 °C, humidity 5... 95% (non-coagulated).

Function

Monitor the rotational speed or frequency signal, provide relay output for alarm or control, and support 2/3 wire sensor input.

Built-in startup coverage and restart suppression prevent false triggering and ensure the safe startup of the system.

Thresholds, delays and modes can be configured through DIP switches and software, facilitating on-site adjustments.

It is equipped with LED indicator lights to display the power supply, input and output status, facilitating diagnosis and monitoring.

High isolation design, supports SC-System accessory integration, suitable for analog/digital signal conditioning.

Application scenarios

S1SD-1FI-1R is widely used in petrochemical, pharmaceutical, manufacturing and mechanical industries, and is suitable for explosive hazard areas in Zone 2 or Div.2. It is used to monitor the rotational speed of motors, pumps or conveyor belts, and supports fault detection and safety interlocking in process control systems such as PLCS. The equipment complies with ATEX, IECEx and cULus certifications, and is suitable for automation systems that require reliable frequency monitoring and signal isolation, such as equipment protection and preventive maintenance scenarios.

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