Industrial 4-Ch PWM Output Module, Modbus RTU Protocol, Isolated RS485 Interface, Adjustable Frequency and Duty Cycle, With Various Isolation And Protection Circuits
Features at a glance
The Modbus RTU PWM Output 4CH is an isolated RS485 to PWM output module, supports 4-ch PWM outputs with adjustable frequency and duty cycle. Adopts Modbus RTU protocol with built-in protection circuits such as power isolation, magnetical isolation, resettable fuse, and TVS.
- The outputs use high-speed optocoupler isolation, and the output high-level voltage can be switched via an internal jumper
- 4-ch PWM outputs, with independently adjustable frequency and duty cycle
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus
- Onboard voltage regulator, supports 7~36V wide range power supply
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference
- Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
- Onboard watchdog, for stable output without crashing
- Rail-mount case design, compact size, easy to install
- 3x LEDs for indicating the power status and signal transceiving status
Specifications
| Communication interface | RS485 |
|---|---|
| Baud rate | 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 |
| Default communication format | 9600, N, 8, 1 |
| Modbus protocol | Standard Modbus RTU protocol |
| Power supply | DC 7~36V |
| Output Voltage | 3.3V by default, configurable to 5V via internal jumper |
| Current | Source current ≤1mA, sink current ≤30mA |
| Pulse Frequency | 1Hz ~ 200KHz |
| Frequency Resolution | 0.01Hz |
| Frequency Accuracy | 5‰ |
| Duty Cycle | 0 ~ 100% |
| Duty Cycle Resolution | 0.01% |
| Duty Cycle Accuracy | 5‰ (1Hz ~ 50kHz), 1% (50kHz ~ 200kHz) |
Industrial Grade Isolated Protection
Onboard power and signal dual isolation for RS485 communication, provides stable isolation voltage, features high reliability and strong anti-interference performance. Built-in TVS (transient voltage suppression tube) can effectively suppress the surge voltage and transient peak voltage in the circuit, lightningproof & ESD protection. Built-in resettable fuse and protection diode to ensure stable current and voltage output, provides over-current and over-voltage proof, improves shock-proof performance, suitable for industrial environments with high requirements.