Schneider 140HLI34000 | Latch/Interrupt Module

The Schneider 140HLI34000 captures high-speed digital events for the Modicon Quantum platform. This latch/interrupt module monitors 16 discrete inputs with microsecond response times. It detects and stores input state changes for precise event tracking. Weighing only 0.36 kg, the Schneider 140HLI34000 fits into any standard Quantum rack slot. Its dimensions measure 150 mm x 100 mm x 55 mm.

Latch Functionality and Input Features

The Schneider 140HLI34000 offers two operating modes for maximum application flexibility. In latch mode, it captures the first 16 input events with a resolution of 1 ms. In interrupt mode, it triggers the CPU immediately upon input state changes. Moreover, this module accepts 24 V DC inputs from sensors, limit switches, or push buttons. Consequently, the Schneider 140HLI34000 responds faster than standard discrete input modules.

Energy Storage and Internal Components

The Schneider 140HLI34000 contains no internal battery for maintenance-free operation. It stores latched event data in volatile memory only while the system has power. This module draws 345 mA from the 5 V DC rack power supply. Additionally, it consumes 60 mA from the external 24 V DC field power supply. The Schneider 140HLI34000 includes 16 optocouplers for complete electrical isolation between rack and field.

Technical Specifications Table

Below are the complete technical parameters for engineers and procurement teams:

Parameter	Specification
Full Product Name	Schneider 140HLI34000
Product Category	Modicon Quantum Latch/Interrupt Module
Number of Input Channels	16
Input Type	Positive logic (sink)
Rated Input Voltage	24 V DC (19.2 V to 30 V DC)
Input Current per Channel	7 mA at 24 V DC
Input Impedance	3.4 kΩ typical
Latch Resolution	1 ms
Maximum Latch Events	16 per scan (stored in internal buffer)
Interrupt Response Time	< 1 ms (module to CPU)
Input Filter Time	Configurable from 0.1 ms to 3 ms
Channel Grouping	2 groups of 8 inputs
Isolation Type	Optocoupler (16 units)
Isolation Voltage	1,500 V AC between field and rack
Current Consumption (5V DC)	345 mA from rack
Current Consumption (24V DC)	60 mA external field supply
Power Dissipation	2.1 W maximum
Energy Storage	No battery (volatile latch memory only)
Number of Components	1 main PCB + 16 optocouplers + 1 terminal block + metal housing
Net Weight	0.36 kg (360 grams)
Gross Weight (packaged)	490 grams
Dimensions (H x W x D)	150 mm x 100 mm x 55 mm
Input ON Voltage	≥ 15 V DC
Input OFF Voltage	≤ 5 V DC
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Degree of Protection	IP20
Certifications	CE, UL 508, CSA, ATEX Zone 2
Configuration Software	Unity Pro Quantum, Concept, ProWORX

Connector and Installation Details

The Schneider 140HLI34000 uses a removable screw terminal block for all field wiring. This terminal block accepts wire sizes from AWG 22 to AWG 14. The module requires an external 24 V DC power supply for input operation. Therefore, do not rely solely on rack power for field devices. The Schneider 140HLI34000 excels at high-speed counting, position capture, and event logging. It suits packaging inspection, press monitoring, and high-speed sorting applications perfectly. Thus, this latch/interrupt module provides precise event detection for demanding automation tasks.