1. General Information

• Model: 140EHC10500C

• Brand: Schneider Electric

• Series: Modicon Quantum

• Type: High‑speed counter module (5 channels, 8DI/8DO)

• Purpose: High‑speed pulse counting, position tracking, frequency/period measurement, event sequencing for Quantum PLC systems.

2. Specifications

2.1 Counter Channels

• Quantity: 5 independent channels

• Resolution: 32‑bit signed

• Max Input Frequency:

  • 100 kHz (5 VDC differential encoder)

  • 20 kHz (24 VDC single‑ended encoder)

• Input Types: A/B quadrature, pulse/direction, up/down, event

• Modes: Event counter, differential (quadrature) counter, period/frequency meter, watchdog (pulse presence).

2.2 Digital Inputs (8 points)

• Voltage: 24 VDC nominal

• Type: Sink (NPN), 7 mA typical

• Isolation: 2500 V AC (channel‑to‑backplane)

• Response Time: ≤1 µs

2.3 Digital Outputs (8 points)

• Voltage: 24 VDC nominal

• Type: Sourcing transistor (PNP)

• Current: 0.5 A per channel (max)

• Protection: Short‑circuit & overload

• Isolation: 2500 V AC

2.4 Power & Environment

• Backplane Power: 5 VDC

• Power Dissipation: ≤6 W

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −40 °C to +85 °C

• Relative Humidity: 5%–95% (non‑condensing)

• Certifications: CE, UL, CSA, RoHS

2.5 Mechanical

• Form Factor: Single slot, Quantum rack

• Dimensions (W×H×D): 104 × 40 × 250 mm

• Weight: ~0.3 kg

• Connector: 40‑pin terminal block (ordered separately)

3. Operation Modes (per channel)

1. Event Counter: Counts rising/falling edges; 32‑bit wrap‑around.

2. Differential (Quadrature) Counter: A/B phase decoding (×1/×2/×4); auto direction.

3. Period/Frequency Meter: Measures µs period or Hz frequency; configurable gate time.

4. Watchdog Timer: Triggers output if no pulse within preset time (safety).

4. LED Indicators

• PWR: Green = power OK

• RUN: Green = module active

• ERR: Red = fault (config/wiring/overload)

• CH1–CH5: Green = counting activity

5. Installation

1. Power off the Quantum rack.

2. Insert module into any empty slot; push firmly until seated.

3. Secure front panel screws.

4. Wire encoders/sensors to the 40‑pin terminal block (use shielded cable).

5. Power on; confirm PWR and RUN LEDs are green.

6. Configuration (EcoStruxure Control Expert / Unity Pro)

1. Add 140EHC10500C to hardware configuration.

2. Configure each channel:

   • Select mode (event/differential/period/watchdog)

   • Set input type (5 V/24 V, single‑ended/differential)

   • Define presets, setpoints, and output mapping

3. Assign 8 DI / 8 DO to I/O addresses.

4. Download configuration; check ERR LED.

7. I/O Mapping

• Inputs 0–7: 24 VDC sink; read via Quantum input table.

• Outputs 0–7: 24 VDC sourcing; write via Quantum output table.

• Counter Data: 32‑bit values in PLC memory (current count, preset, status per channel).

8. Applications

• High‑speed pulse counting (encoders, flow meters, tachometers)

• Position/speed monitoring (conveyors, machine tools, packaging)

• Frequency/period measurement

• Event logging & sequencing

• Safety pulse monitoring (watchdog)

9. Troubleshooting

• PWR Off: Check backplane power; re‑seat module.

• RUN Off: Verify CPU is in RUN; re‑download config.

• ERR On: Check wiring, encoder voltage, config errors, or output overload.

• No Counting: Verify encoder power, A/B phase wiring, and input frequency limits.

10. Reference Documents

• Official Manual: Quantum 140EHC10500 User Manual (EcoStruxure Control Expert)

• Doc No.: 33002491K01000 (Rev 09, Dec 2018)

• Software: EcoStruxure Control Expert (Unity Pro) v7.0+