Weidmuller 8965360000 ACT20X-HDI-SDO-S Isolating Switch Amplifier

Q: How do I configure the Line Fault Detection (LFD) for a standard mechanical switch?

To use LFD with a mechanical switch, you must wire an external resistor network at the switch contacts: a 1k Ohm resistor in series and a 10k Ohm resistor in parallel. Alternatively, you can disable LFD entirely using the Weidmuller FDT/DTM software.

Q: What software is required to configure the ACT20X-HDI-SDO-S?

Configuration requires the Weidmuller WI-Manager software (FDT frame) along with the device-specific ACT20X DTM package and a CBX200 USB interface cable.

Q: Can this isolating amplifier be installed directly in Zone 0?

No, the module itself must be installed in a safe area or Zone 2 (inside a suitable protective enclosure). However, its input circuits are certified intrinsically safe for direct connection to devices located in Zone 0, 1, or 2.

SKU 8965360000

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12-month warranty
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Manufacturer: Weidmuller
Product No.: 8965360000
Country of origin:Germany
Product Type: Isolating Switch Amplifiers
Payment: T/T, Western Union
Weight: 1200g
Dimensions: 117.2 mm x 22.5 mm x 113.6 mm
Shipping port: Xiamen
Warranty: 12 months

Processing digital signals from hazardous areas requires robust galvanic isolation, which the Weidmuller 8965360000 ACT20X-HDI-SDO-S delivers as a high-performance, 2-channel isolating switch amplifier. This device safely transmits switching states from NAMUR sensors or mechanical contacts located in Zone 0, 1, or 2 hazardous areas to the safe area control system, providing complete electrical separation and signal conditioning in a compact form factor.

Key Features

Dual-channel intrinsically safe input for NAMUR sensors or dry mechanical contacts.
Galvanic 4-way isolation between input, output, power supply, and status output.
Integrated line fault detection (LFD) for continuous wire-break and short-circuit monitoring.
FDT/DTM software-configurable parameters for custom application tuning and diagnostics.
Relay outputs (1 changeover contact per channel) for robust load switching.
Compact 22.5 mm DIN-rail housing to optimize cabinet space.

Applications

Intrinsically safe signal isolation in chemical and petrochemical processing plants.
Oil and gas pipeline monitoring systems requiring Zone 0/1 sensor deployment.
Water and wastewater treatment facility telemetry and pump control.
Hazardous area valve position feedback and limit switch integration.

Technical Specifications

Parameter	Value
Manufacturer	Weidmuller
Article Number	8965360000
Model	ACT20X-HDI-SDO-S
Number of Channels	2
Input Type	NAMUR sensor (DIN EN 60947-5-6) or mechanical switch
Output Type	Relay (1 changeover contact per channel)
Nominal Switching Voltage	250 V AC / 30 V DC
Supply Voltage	19.2 to 31.2 V DC
Power Consumption	<= 1.1 W
Isolation Voltage	2.6 kV AC (input / output / power)
Connection Technology	Screw connection
Clamping Range	0.5 to 2.5 mm2
Flammability Rating	UL 94 V-0
Protection Degree	IP20
Operating Temperature	-20 to +60 degC
Dimensions (H x W x D)	117.2 mm x 22.5 mm x 113.6 mm
Net Weight	0.170 kg

Connections and Interfaces

Terminal Pin	Function / Circuit Assignment
11 / 12	Channel 1 Input (NAMUR Sensor / Mechanical Switch)
21 / 22	Channel 2 Input (NAMUR Sensor / Mechanical Switch)
51 / 52 / 53	Channel 1 Relay Output (NC / COM / NO)
61 / 62 / 63	Channel 2 Relay Output (NC / COM / NO)
91 / 92	Power Supply (19.2 to 31.2 V DC: + / -)

Alternative Models & Compatibility

The ACT20X-HDI-SDO-S is part of Weidmuller's premium ACT20X signal converter family. It serves as a direct replacement or upgrade path for legacy ACT20 series modules. When migrating from older systems, verify that your configuration files are updated in the FDT/DTM frame to match the specific firmware revision of the 8965360000 module.

Application Pitfalls & Engineering Notes

When utilizing standard mechanical switches instead of NAMUR sensors, the Line Fault Detection (LFD) circuit must be configured correctly. If LFD is enabled without external resistors, the module will interpret an open switch as a wire break and a closed switch as a short circuit. To prevent false diagnostics, either disable LFD via the DTM software or wire a resistor network (typically 1k Ohm in series and 10k Ohm in parallel) directly at the switch contacts.

Commissioning & Wiring Tips

Configuration is performed using the Weidmuller WI-Manager software via the front-panel service jack. Ensure the CBX200 USB interface cable is used for connection. For field wiring, maintain a minimum physical separation of 50 mm between the intrinsically safe (Ex i) blue terminals on the left side and the non-intrinsically safe terminals on the right side to comply with international hazardous area installation standards.

Installation Guidelines

CRITICAL WARNING

De-energize all power sources before mounting, wiring, or configuring the device. Failure to isolate power can result in electrical shock or spark generation in hazardous areas, compromising explosion protection safety.

1

Snap the module vertically onto a standard TS 35 DIN rail, ensuring the metal grounding spring on the back makes secure contact with the rail.

2

Connect the intrinsically safe field sensors to the blue terminals (11/12 and 21/22), ensuring proper cable routing away from power lines.

3

Wire the relay outputs and the 24 V DC power supply to the black terminals on the opposite side of the module.

4

Connect the configuration interface to set the desired input/output logic and LFD parameters using the FDT/DTM software before commissioning.

FAQ

How do I configure the Line Fault Detection (LFD) for a standard mechanical switch?

To use LFD with a mechanical switch, you must wire an external resistor network at the switch contacts: a 1k Ohm resistor in series and a 10k Ohm resistor in parallel. Alternatively, you can disable LFD entirely using the Weidmuller FDT/DTM software.

What software is required to configure the ACT20X-HDI-SDO-S?

Configuration requires the Weidmuller WI-Manager software (FDT frame) along with the device-specific ACT20X DTM package and a CBX200 USB interface cable.

Can this isolating amplifier be installed directly in Zone 0?

No, the module itself must be installed in a safe area or Zone 2 (inside a suitable protective enclosure). However, its input circuits are certified intrinsically safe for direct connection to devices located in Zone 0, 1, or 2.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

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