Description

Schneider Electric 140DDI84100 Modicon Quantum Discrete Input Module

The Schneider Electric 140DDI84100, also cataloged as the 140DDI84100 discrete input module, operates as a dedicated hardware component for monitoring DC digital signals within Modicon Quantum PLC platforms.

Hardware Specifications

Parameter	Specification
ModelBrand	Schneider Electric
Origin	France
Weight	130 g
Dimensions	10 cm x 8 cm x 2.5 cm
OperatingTemp	0…60 degC
StorageTemp	-40…85 degC
RelativeHumidity	95 % without condensation
OperatingAltitude	<= 5000 m
DiscreteInputNumber	16
GroupOfChannels	8
LogicInput	Positive (sink)
InputVoltageLimits	10…60 VDC
InputCurrent12V	5…10 mA DC
InputCurrent24V	6…30 mA DC
InputCurrent48V	2…15 mA DC
InputCurrent60V	1…5 mA DC
AbsoluteMaximumVoltage	75 VDC
ResponseTime	4 ms (0→1), 4 ms (1→0)
SwitchingFrequency	<= 100 Hz
IsolationGroupBus	2500 Vrms DC for 1 min
IsolationBetweenGroups	700 Vrms DC for 1 min
PowerDissipation	1 W + (0.62 x number of points on)
Standards	UL 508, CSA C22.2 No 142
ProductCertifications	FM Class 1 Division 2, C-Tick
ESDResistance	4 kV contact, 8 kV air (IEC 801-2)
EMCResistance	10 V/m, 80…2000 MHz (IEC 801-3)
Marking	CE

Industrial Control Technical Features

The module supports deterministic backplane bus communication, enabling high-speed signal transfer with minimal latency across the Modicon Quantum PLC architecture. Firmware flash compatibility ensures integration with system updates without requiring physical module replacement. Input channels are designed with robust isolation between groups, minimizing cross-channel interference and maintaining signal integrity under electrically noisy environments.

Frequently Asked Questions

Q: What is the maximum DC input voltage the module can tolerate without damage?
A: The absolute maximum voltage is 75 VDC. Exceeding this may result in permanent damage to the module.

Q: Can the module handle hot-swapping in an operating PLC rack?
A: The module is not designed for hot-swap operation. Power must be removed before insertion or removal to prevent bus or signal damage.

Q: How fast can the module respond to input state changes?
A: The module has a response time of 4 ms for transitions from state 0 to 1 and 4 ms from state 1 to 0.

Field Installation Guidelines

• Mount module securely on the PLC rack according to Modicon Quantum mechanical specifications.
• Ensure all DC input wiring is properly shielded and grounded to reduce electromagnetic interference.
• Maintain recommended spacing between high-voltage and signal wiring to prevent cross-talk.
• Avoid routing wires near power devices that could introduce transient voltages beyond rated limits.
• Verify proper addressing of input words per system configuration before powering the PLC.

Specifications

• Brand: Schneider Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems