SCHNEIDER TSX Premium System Operation and Maintenance

2/3 line proximity switch compatible: Complies with CENELEC or Telemecanique standards and can be directly connected to PNP or NPN sensors.

Programmable filtering (DEY 16FK only): The filtering time can be adjusted within 0-7.5ms. For mechanical contacts (travel switches), it is recommended to set ≥ 3ms to eliminate bouncing; For electronic sensors, a shorter value (such as 0.5ms) can be set to improve response speed.

Event Capture (DEY 16FK): Up to 16 inputs can be configured as event inputs, triggering CPU interrupts when signals change, achieving microsecond level response. It is required that the interval between two consecutive pulses be at least two PLC scanning cycles, with a pulse width greater than the filtering time.

State latch (DEY 16FK): capable of capturing pulses shorter than the scanning period, ensuring that signals are not lost.

3.2 Communication input module (24V/48V/115V/230V)

Model Number Rated Voltage Frequency Input Impedance Typical Current

DEY 16A2 16 24V AC 47-63Hz 1.6kΩ 15mA

DEY 16A3 16 48V AC 47-63Hz 3.2kΩ 16mA

DEY 16A4 16 115V AC 47-63Hz 9.2kΩ 12mA

DEY 16A5 16 230V AC 47-63Hz 20kΩ 15mA

The communication module is suitable for long-distance transmission or scenarios compatible with existing AC devices. Note that its response time is limited by 50/60Hz rectification filtering and is usually slower than DC modules.

TSX DSY Discrete Output Module: Types and Protection Mechanisms

The output module drives actuators such as relays, solenoid valves, indicator lights, etc. It is divided into three types: transistors, relays, and three terminal bidirectional thyristors (Triac).

4.1 DC transistor output (24V/48V)

Number of model points per channel Current module Total current Short circuit/overload protection Response time

DSY 08T2 8 0.5A 4A/7A with (electronic) 1.2ms

DSY 08T22 8 2A 14A has 0.2ms

DSY 08T31 8 1A 7A has 0.3ms

DSY 16T2 16 0.5A 4A/7A (per common end) has 1.2ms

DSY 16T3 16 0.25A 4A has 1.2ms

DSY 32T2K 32 0.1A 3.2A has 1.2ms

DSY 64T2K 64 0.1A 5A has 1.2ms

Protection and Recovery:

The transistor outputs are equipped with built-in short-circuit and overload detection. When a fault is detected, the corresponding channel automatically disconnects (trips), the channel indicator light flashes, and the PLC's I/O red light lights up.

Output reactivation: Can be configured to automatically reactivate (attempted every 10 seconds) or manually reactivate through a program/terminal. Re activation is performed in groups (8 channels per group), with a minimum interval of 10 seconds between two re activations. Only when the fault disappears can reactivation be successful.

Pre actuator voltage monitoring: If the pre actuator supply voltage is below the threshold (16V for 24V modules and 34V for 48V modules), the system will report a fault and optionally shut down the output.

Fallback state: In the event of a serious failure (such as an internal module error), the output can be configured to remain in the last state, fallback to 0, or fallback to 1.

4.2 Relay output (50VA/100VA)

Model Point AC Capacity DC Capacity Switch Life (Typical) Fuse Protection

DSY 08R5/16R5 8/16 24-240V AC, 3A (50VA) 12-24V DC, 3A (24W) 1 × 10 ⁶ times none, external required

DSY 08R4D 8 is not suitable for 24-130V DC, 5A (100VA) 1 × 10 ⁶ times available (replaceable)

DSY 08R5A 8 24-240V AC, 5A 24-48V DC, 5A 1 × 10 times available (replaceable)

Points to note:

The relay output does not have built-in short-circuit protection, and a fuse or circuit breaker must be installed on the external circuit.

For inductive loads (motors, solenoid valves), it is necessary to connect an RC absorption circuit (AC) or a freewheeling diode (DC), otherwise the contact life will sharply decrease.

When the terminal block is unlocked, the relay output will automatically cut off to ensure safe replacement of the load.

4.3 Three terminal bidirectional thyristor output (Triac)

DSY 08S5: 8-point, 48-240V AC, 2A/point, 12A/module

DSY 16S4: 16 o'clock, 24-120V AC, 1A/point, 12A/module

Triac output is suitable for AC resistive loads with frequent switching, such as heaters and lighting. Its characteristics are silence and no mechanical wear, but there is leakage current (about several milliamps), which is not suitable for driving small current loads (such as LED indicator lights), otherwise it will flicker.

Practical Specification for Installation and Wiring

5.1 Processor and I/O Module Installation

Rack position: When using standard power modules (TSX PSY 1610/2600), the processor must be plugged into slot 00; When using a dual format power supply (TSX PSY 3610/5500/5520), the processor is plugged into slot 01. Before installing the module, the power supply to the rack must be cut off.

Hot swappable: I/O modules can be plugged in and out of the rack without power (but the power supply to the on-site sensors and actuators needs to be cut off), while processor modules are not allowed to be plugged in and out with power on.

5.2 Terminal Blocks and Connectors

Terminal block module: equipped with detachable screw terminal blocks (such as TSX BLY 01 ordered separately). Each terminal can accommodate wires ranging from 0.2mm ² (AWG24) to 1.5mm ² (with end caps) or 2mm ² (bare wire). The terminal block is equipped with identification plates that can record module addresses and channel symbols.