Signal Isolator, Frequency/Pulse to 4-20mA/0-10V

Name: Signal Isolator, Frequency/Pulse to 4-20mA/0-10V
Brand: Such.com
SKU: SUCH-SIGNI-604S
Price: 110.58 USD
Availability: InStock
Rating: 5.0 (1 reviews)

1 review(s) | Add your review

SKU: SUCH-SIGNI-604S

$110.58

● Frequency input type range < 100 kHz ● Selectable output signals 4-20/0-10mA and 0-5/0-10V ● Accuracy ±0.1% F.S., temperature drift 40ppm/°C ● Response time ≤0.5s, single/dual output ≤0.8W/1.3W

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Overview
Spec
Application
FAQ
Reviews

Overview

This frequency to analog converter accepts pulse/frequency inputs up to 100kHz with trigger levels: low 0‑2V, high 4‑30V, minimum pulse width ≥5μs, and input impedance ≥10kΩ. It outputs 4‑20mA, 0‑10mA, 0‑5V, or 0‑10V with load capacity 550Ω for current or ≥1MΩ for voltage. Available in single or dual outputs, consuming ≤0.8W or ≤1.3W. As a pulse signal conditioner, it delivers ±0.1% F.S. accuracy, ≤0.5s response, 40ppm/℃ drift, and 1500VAC isolation. It provides auxiliary 24V or 12V distribution output and features output ripple <5mVrms. Powered by DC 18‑32V, it complies with IEC 61326‑3‑1. Ideal for frequency/pulse signal conversion in automation.

Feature

Frequency input: supports 100kHz max with selectable 0-500Hz to 100kHz ranges, 0~2V/4~30V trigger, and ≥5μs pulse.
Input impedance: selectable current 0-20/4-20mA and voltage 0-5/0-10V, with dual output for PLC and display simultaneously.
Distribution output: built-in 24V/12V (≥22V/≥11V @20mA) powers 2/3-wire sensors directly, eliminating extra external power supply units.
Accuracy & stability: ±0.1% FS with 40ppm/°C drift ensures high precision across -20~60°C, requiring no recalibration.
Fast response & low power: ≤0.5s response meets thermal/interlock needs; 0.8W/1.3W low heat for dense mounting.
Output signals: Strong protection: 1500VAC 3-port isolation and ≥100MΩ insulation block ground loops/surges, protecting I/O per IEC 61326-3.

Dimension (Unit: mm)

Dimensional drawing of ultra-slim frequency-to-analog signal isolator (mechanical dimensions & pinout layout

Wiring Diagram

Functional wiring diagram of frequency-to-analog signal isolator with 1-In-2-Out and 1-In-1-Out configurations, showing power supply and output RL terminal assignments

Spec

Output Signal	Current: 0-20mA
	Current: 4-20mA
	Voltage: 0-5V
	Voltage: 0-10V
Output Load Capacity	For 0-20mA: ≤ 550Ω
	For 4-20mA: ≤ 550Ω
	For 0-10mA: ≤ 1.1kΩ
	For 0-5V: ≥ 1MΩ
	For 0-10V: ≥ 2MΩ
Number of Input & Output Channels	1 input channel & 1 output channel
Number of Input & Output Channels	1 input channel & 2 output channels
Full Load Power Consumption	Single output: ≤ 0.8 W (at 24 VDC supply)
Full Load Power Consumption	Dual output: ≤ 1.3 W (at 24 VDC supply)
Isolation Transmission Accuracy	±0.1% F.S (at 25°C±2°C)
Response Time	≤0.5 s
Temperature Drift	40 ppm/°C
Dielectric Strength	≥1500 VAC (between input/output/power supply) – leakage current 1mA, test time 1 min
Insulation Resistance	≥100 MΩ (between input/output/power supply)
EMC Compliance	IEC 61326-3-1
Frequency Range	≤100 kHz
Frequency Signal Trigger Level	Low level: 0-2V
Frequency Signal Trigger Level	High level: 4-30V
High/Low Level Pulse Width	≥5 µs
Input Impedance	≥10 kΩ
Input Resolution	Signal frequency < 1 kHz: 0.1 Hz
Input Resolution	Signal frequency ≥ 1 kHz: 1 Hz
Output Ripple	≤5 mVrms (at 250Ω load)
Auxiliary Power Output (Distribution Voltage)	24 VDC, at 20mA: ≥22V
Auxiliary Power Output (Distribution Voltage)	12 VDC, at 20mA: ≥11V
Supply Voltage Range	DC 18-32 V (typical 24 VDC)
Certifications	CE Compliant

Application

Logistics Sorting Line

Traffic Intersection

Steam Turbine

FAQ

Q1: Does this unit support both NPN and PNP frequency outputs, and what other types are available? ❯

A: Accepts frequency signals with low level 0~2V and high level 4~30V – compatible with open collector (OC), NPN, PNP, pulse square wave, and sine wave. Minimum pulse width ≥5μs ensures it captures fast pulses without missing edges, even at high speeds. Most industrial encoders, proximity switches, and flow meters work directly with no additional conditioning.

Q2: Can the unit measure very low RPM signals within its supported frequency range? ❯

A: Frequency range is ≤100kHz with input resolution of 0.1Hz (below 1kHz) or 1Hz (≥1kHz). For very low RPM monitoring – e.g., 1Hz = 60 RPM – the 0.1Hz resolution gives you plenty of accuracy for most speed tracking applications. If you're measuring ultra‑low frequencies (below 0.5Hz), please contact our team – we can recommend an alternative model better suited for that range.

Q3: Will the supported input voltage range require me to add external resistors or dividers? ❯

A: No external components needed. The trigger levels are Low 0- 2 V and High 4–30 V–which covers 5 V, 12 V, and 24V logic levels directly. Just wire it in, and it works.

Important: This unit is designed for DC logic‑level pulses only. For 220V AC signals, you'll need a different model – check our WS1528 series, which is built for high‑voltage AC inputs.

1 review(s)

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From: Julian Alden | Date: 9/9/2026 7:59 AM

good signal isolator frequency to analog

Got this signal isolator frequency to analog for a speed signal on one of my machines. Wiring took a minute to figure out, but nothing too bad. Once it was hooked up, the 4-20mA output looked right and I haven't really had to touch it since. Pretty handy little unit for this job.

Signal Isolator, Frequency/Pulse to 4-20mA/0-10V

Feature

Dimension (Unit: mm)

Wiring Diagram

Logistics Sorting Line

Traffic Intersection

Steam Turbine

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