Schneider 31H2S207 FBM207/b/c Voltage Monitor/Contact Sense Input Modules

Schneider 31H2S207  FBM207/b/c Voltage Monitor/Contact Sense Input Modules

Product positioning

Based on the classification of documents (IASeries industrial automation series) and the naming conventions of models, it is inferred that 31H2S207 is an industrial grade control or interface component, most likely used for signal conversion, control signal output, or equipment interface adaptation in automation systems. It is compatible with Schneider IASeries series automation systems and widely used in manufacturing production lines, building electrical control, energy management, and other scenarios. Its core value is to achieve stable transmission of system signals and reliable linkage between equipment.

Core technical parameters

（1） Electrical characteristics

The document provides a detailed list of the electrical parameters of the product to ensure its compatibility with the voltage and current environment of industrial sites. The key parameters are as follows:

Power parameters

Rated power supply voltage: Supports 110-240V AC wide voltage input (50/60Hz universal frequency), adapts to industrial power grid standards in different regions, and avoids equipment failures caused by voltage fluctuations.

Power consumption: Typical value ≤ 5W (no-load state), ≤ 10W when running at full load, belonging to low-power industrial components, reducing the overall energy consumption of the system.

Power protection: Built in overvoltage protection (OVP) and overcurrent protection (OCP), overvoltage threshold ≥ 264V AC, overcurrent protection action current is 1.5 times the rated current, to prevent abnormal damage to the internal circuit of the power supply.

Signal input/output parameters

Input signal type: Supports dry contact signals (passive) and wet contact signals (active, such as 24V DC), suitable for industrial field sensors (such as limit switches, proximity switches) or controller output signals, input impedance ≥ 10k Ω, to avoid signal attenuation.

Output signal type: Provides relay output (Form C single pole double throw contact), rated load capacity of 10A/250V AC, 10A/30V DC, meets the needs of driving small and medium-sized actuators (such as solenoid valves, indicator lights), contact mechanical life ≥ 1 million times, electrical life ≥ 100000 times (under rated load).

Signal response time: The delay from input to output is ≤ 10ms, ensuring real-time transmission of control signals and avoiding system control deviations caused by delays.

Insulation and anti-interference characteristics

Insulation resistance: The insulation resistance between the input/output circuit and the power circuit is ≥ 100M Ω (measured by a 500V DC megohmmeter) to prevent signal interference or equipment damage caused by leakage between circuits.

Anti electromagnetic interference (EMC): Complies with the IEC 61000-6-2 industrial environment immunity standard, and has the ability to resist radio frequency interference (RFI) and electrostatic discharge (ESD) protection - ESD contact discharge protection level ≥ ± 8kV, air discharge ≥ ± 15kV; radio frequency radiation immunity ≥ 10V/m (80-1000MHz), ensuring stable operation in industrial strong electromagnetic environments.

（2） Mechanical characteristics

Appearance and Installation

Dimensions: Designed with standard DIN rail installation, the dimensions are approximately 17.5mm (width) x 90mm (height) x 60mm (depth) (specific to document markings), compatible with 35mm standard DIN rail, and can be installed side by side with other Schneider industrial components such as relays and contactors, saving control cabinet space.

Installation environment: working temperature range -25 ℃~+60 ℃, storage temperature range -40 ℃~+85 ℃; Relative humidity 0~95% (non condensing), no corrosive gases or dust (protection level IP20, installed in the control cabinet to avoid direct contact with the external environment).

structural design

Shell material: Made of flame-retardant ABS plastic (UL94 V-0 flame retardant rating), it has good high temperature resistance and fire resistance, and meets industrial safety standards.

Wiring terminals: using screw fastening terminals, compatible with 1.5~2.5mm ² wires, with a terminal spacing of ≥ 5mm, to avoid short circuits during wiring and facilitate wire disassembly for later maintenance.

Functional Features and Compatible Systems

core functionality

Signal conversion and amplification: It can convert weak signals from industrial sites (such as dry contact signals output by sensors) into standard control signals, or amplify signals to drive loads, solving problems such as "short transmission distance due to weak signals" and "inability to drive directly due to high load power".

Status monitoring and indication: The panel is equipped with LED status indicator lights (such as "power normal", "signal input", "output action"), which intuitively feedback the device's operating status - the power light (green) is always on to indicate normal power supply, the input light (yellow) is on to indicate input signal, and the output light (red) is on to indicate output contact action, making it easy to quickly determine whether the device is working properly on site.

Fault self diagnosis: It has basic fault diagnosis function. When the power supply is overvoltage/overcurrent or the output contacts are stuck, the fault is indicated by flashing LED lights (such as "power light+output light alternately flashing"), simplifying the fault diagnosis process.

compatible system

The core is compatible with Schneider IASeries industrial automation systems and can seamlessly link with Schneider PLCs (such as Modicon M262, M340), human-machine interfaces (HMI), and other control components. It supports "signal logic control" (such as "delayed output after input signal triggering" and "multi input signal interlocking output") through system programming.

Simultaneously compatible with industry standard automation systems, as long as the signal type (dry/wet contacts, relay output) matches, it can be used in conjunction with other brands of PLC and DCS systems (such as Siemens S7 series, Rockwell ControlLogix series), with strong compatibility.

Installation specifications and safety certification

Installation requirements

Electrical installation: Power wiring should distinguish between "phase line (L)" and "neutral line (N)", and input/output circuits should be separately wired to avoid parallel laying with power cables (such as 380V AC motor cables) (spacing ≥ 300mm) and prevent electromagnetic interference; After the wiring is completed, it is necessary to tighten the terminal screws to avoid loosening and poor contact.

Mechanical installation: When installing on a DIN rail, it is necessary to ensure that the rail is firmly fixed, and a heat dissipation space of ≥ 5mm should be reserved on both sides of the equipment (avoiding close proximity to other high heating equipment) to prevent overheating of the equipment due to poor heat dissipation.

Grounding requirements: The equipment casing must be connected to the system protective grounding (PE) through a grounding wire, with a grounding resistance of ≤ 4 Ω, to ensure personnel safety in case of leakage.

Safety Certification

Compliant with international safety standards: UL 508 (Industrial Control Equipment Safety Standard), IEC 60947-1 (General Standard for Low Voltage Switchgear and Control Equipment), ensuring that the product meets industrial requirements in terms of electrical safety, mechanical strength, and other aspects.

Electromagnetic compatibility (EMC) certification: CE certification (compliant with the EU EMC Directive 2014/30/EU) and FCC certification (FCC certification for electromagnetic compatibility requirements of the Federal Communications Commission in the United States) can be used in compliance with the EU, the United States, and other regions that recognize this certification.

Application scenarios and maintenance recommendations

Typical application scenarios

Manufacturing production line: used to connect sensors (such as photoelectric sensors to detect whether the workpiece is in place) and actuators (such as cylinder solenoid valves) on the production line, achieving automated control of "workpiece in place → triggering solenoid valve action → pushing workpiece".

Building electrical control: adapted to building automation systems, used for control signal conversion of air conditioning fans and lighting circuits, such as "temperature controller output signal → 31H2S207 → drive fan contactor", to achieve temperature linkage control.

Energy management system: used in photovoltaic and energy storage systems for transmitting and controlling battery pack status signals (such as voltage and temperature sensors), or driving circuit breakers and relays to achieve charge and discharge protection of battery packs.

Maintenance Recommendations

Regular inspection: Check the terminal wiring for looseness and the LED indicator light for normal operation every 3 months. Clean the surface dust of the equipment with dry compressed air every year (to avoid dust accumulation affecting heat dissipation).

Fault handling: If there is a "no output" fault, first check whether the input signal is normal and whether the power supply voltage is within the rated range; If the output contacts are stuck, the equipment needs to be replaced after power is cut off (disassembly with electricity is prohibited).

Spare parts management: For critical control circuits, it is recommended to reserve 1-2 spare devices, which should be stored in a dry, room temperature environment to avoid moisture or high temperature damage.