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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | DC discrete output module |
| Platform | Modicon Quantum automation platform |
| Number of Outputs | 32 |
| Channel Grouping | 4 groups of 8 |
| Output Logic | Positive logic, source |
| Nominal Output Voltage | 24 V DC |
| Output Voltage Limits | 19.2–30 V DC |
| Absolute Maximum Output | 56 V for a 1.3-second decaying pulse |
| Maximum Voltage Drop | Less than 0.4 V at 0.5 A |
| Maximum Load Current | 16 A per module; 4 A per group |
| Surge Current | ≤5 A for 0.0005 seconds |
| Leakage Current | 0.4 mA at 30 V |
| Response Time | ≤1 ms OFF-to-ON; ≤1 ms ON-to-OFF |
| Load Inductance | L=0.5/(I2×f)L = 0.5/(I^2 \times f) H at 50 Hz |
| Protection | Internal 5 A fuse per group |
| Fault Indication | Blown fuse; loss of field power |
| Channel-to-Bus Isolation | 1,780 V RMS for 1 minute |
| Group-to-Group Isolation | 500 V RMS for 1 minute |
| Addressing Requirement | 2 output words |
| Bus Current Requirement | 330 mA |
| Power Dissipation | 1.75+(0.4×Itotal)1.75 + (0.4 \times I_{total}) W |
| Local Signaling | Green Active LED; red external-fault LED; 32 green output LEDs |
| Operating Temperature | 0 to 60 °C |
| Storage Temperature | −40 to +85 °C |
| Relative Humidity | 95% non-condensing |
| Operating Altitude | Up to 5,000 m |
| Dimensions | Approximately 42 × 100 × 250 mm |
| Weight | Approximately 0.45 kg |
| Certifications | UL 508; CSA C22.2 No. 142 |
Schneider Electric identifies the 140DDO35300 as a 32-output, 24 V DC solid-state module for Modicon Quantum systems. The published technical data specifies four groups of eight, positive-logic sourcing outputs, 4 A maximum per group, 16 A per module, 1 ms response time, and internal 5 A group protection.
The model was discontinued on January 26, 2024, with end-of-service listed for December 31, 2030. Verify available support and replacement architecture before purchasing obsolete stock.
Product Introduction
The Schneider Electric 140DDO35300 is a 32-channel solid-state DC output module for Modicon Quantum PLC racks. It sources 24 V DC to field devices such as relay coils, indicator lamps, solenoid valves, and interface modules through four groups of eight outputs.
The module provides positive-logic sourcing, 1 ms switching, individual output LEDs, group protection, and isolation between the output groups and the Quantum bus. Confirm the field common arrangement, load current, inductive suppression, group loading, and terminal wiring before installation.
140DDO35300
140DDO35300
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Output LED is OFF and load is OFF | PLC command absent, field supply missing, or blown group fuse | ✅ High | Check the PLC output word, measure 24 V DC field power, and inspect the red fault LED | Confirm command and field power before replacing the module |
| Output LED is ON but load remains OFF | Open field wiring, missing 0 V return, failed load, or blown fuse | ✅ High | Measure voltage between the output terminal and field 0 V while commanded ON | Trace the field circuit and load; replace the module only if the output terminal is inactive |
| Output remains ON after command turns OFF | Shorted solid-state channel, external backfeed, or wiring fault | ✅ High | Isolate the field conductor safely and measure output voltage with the command OFF | Remove external backfeed; replace the module if the channel remains energized |
| Several outputs in one group fail | Group fuse, field supply, or common return problem | ✅ High | Test each output group’s field voltage and inspect the corresponding protection circuit | Repair the group supply or replace the module if the fuse repeatedly fails |
| Red external-fault LED is active | Blown fuse or loss of field power | ✅ High | Measure 24 V DC at the field supply and output connector; check group loading | Correct the supply or short circuit before replacing the module |
| Output voltage collapses under load | Excessive current, undersized supply, wiring resistance, or overload | ✅ High | Measure voltage at the module and load simultaneously while energized | Reduce load, repair wiring, or add an interposing relay |
| Output chatters | Unstable PLC command, field supply ripple, or inductive interference | ✅ Medium | Trend the command bit and 24 V DC supply; inspect suppression across coils | Correct logic, power quality, and suppression before replacing the card |
| Fuse blows when a solenoid energizes | Inrush current, shorted coil, or inadequate suppression | ✅ High | Measure coil resistance and compare the load with group and module ratings | Repair the load and add approved flyback suppression; do not bypass the fuse |
| Multiple groups overheat | Total current or group current exceeds specification | ✅ High | Calculate current per output, group, and module; inspect temperature and ventilation | Reduce the load; keep within 4 A per group and 16 A per module |
| PLC output word changes but field output does not | Backplane communication, module logic, fuse, or field wiring fault | ✅ Medium to high | Compare the PLC output word, module LED, and measured terminal voltage | Isolate the fault using a known-good channel and check rack diagnostics |
| Output works with a meter but not with the load | Meter has negligible current draw; load or wiring is faulty | ❌ Low to medium | Test with the actual load or a correctly rated test load | Check load current, return path, and voltage drop under load |
| New module behaves differently | Wrong output logic, terminal block mismatch, or incompatible module | ✅ High | Confirm the full part number, positive-logic sourcing, and terminal arrangement | Stop installation and verify the replacement specification |
This module supplies 24 V DC and can deliver substantial current across its output groups. Use the correct polarity, common-return arrangement, fuse protection, and inductive-load suppression. If the issue remains unresolved, contact technical support with output-word data, LED status, field-voltage measurements, load current, fuse condition, and terminal-wiring photos.
Frequently Asked Questions (FAQ)
What type of outputs does the 140DDO35300 provide?
It provides 32 positive-logic, solid-state DC outputs. The outputs source 24 V DC to field loads and are arranged as four groups of eight channels.
Is the 140DDO35300 a sinking or sourcing module?
It is a sourcing module, also called positive logic. The output supplies the positive DC potential to the load, which then returns through the field common. Verify the field wiring before connecting a replacement.
What current can each output handle?
The published data specifies 16 A maximum per module and 4 A maximum per group. Do not interpret the 16 A module rating as 0.5 A or 1 A available on every channel simultaneously. Check the individual load, group total, supply capacity, and thermal conditions.
Is the 140DDO35300 still manufactured?
Schneider Electric lists the module as discontinued on January 26, 2024, with end-of-service scheduled for December 31, 2030. Remaining inventory may be Factory Sealed, New Surplus, or Refurbished and Tested.
Can I replace it with a 24 V DC relay output card?
Not automatically. Relay and solid-state outputs differ in leakage current, voltage drop, inrush capability, switching speed, suppression requirements, and terminal wiring. Confirm the output technology and load requirements before selecting a replacement.
Can I hot-swap the 140DDO35300?
Do not assume live replacement is permitted. Isolate the Quantum rack and field supply unless the specific installation procedure authorizes hot swapping. Disconnecting a live DC output can create arcing, unexpected actuator movement, or damage to the terminal and load.
Does it work with solenoid valves and contactor coils?
It can operate compatible DC inductive loads, but the coil current, inrush, load inductance, group current, and suppression method must remain within specification. Use an approved flyback diode, suppressor, or interposing relay where required.
Why is surplus stock cheaper than a factory replacement?
The model is obsolete, and the unit may be discontinued inventory, opened stock, or refurbished/tested hardware. Request the exact condition, current label photos, output-channel load-test results, fuse and LED checks, warranty terms, and return conditions. A power-up test alone does not verify all 32 outputs.
