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| Model | WTD 240X | WTD 250C | WTD 266C | WTD 278C |
| Digital Input | ||||
| Channel | 16 Channels isolated/Counter | 8 Channels isolated/Counter | ||
| Dry Connection | Supported | Supported | ||
| Wet Connection | Bi-directional: High:+10V~+50V;Low:≤3V | Bi-directional: High:+10V~+50V;low:≤3V | ||
| Isolation Voltage | 3KV Vdc | 3KV Vdc | ||
| Digital Output | ||||
| Channel | 16 Channels Isolated/PWM | 8 Channels Isolated/PWM | ||
| Type | ||||
| Mode | Collector Open(50Vdc) | Collector Open(50Vdc) | ||
| Load Current | 500mA Max | 500mA Max | ||
| Isolation Voltage | 3KV Vdc | 3KV vdc | ||
| Ralay Output Parameter | ||||
| Channel | 3 channels Type A/C | |||
| Breakdown Voltage | 750Vac (50/60Hz1min) | |||
Contact Load (Resistance) | TypeA: 5A@250Vac 5A@30Vdc TypeC: 10A@250Vdc 10A@30Vdc | |||
| Isolation Resistance | 1GO.Min@500Vdc | |||
| Switching Time | Less than 10ms | |||
| operating Speed | 6 Times/Minute | |||
| Board | ||||
| OS | FreeRTOS | |||
| Processor | STM32(Cortex-M3) | |||
| CPU Clock | 72MHz | |||
| LED Indicator | Power,Communication,Channel LED | |||
| Watch Dog | System Watchdog,Communication Watchdog | |||
| Protection | Over Current,Over Voltage,Over Temperature,Anti-reverse | |||
| Communication | CAN Terminal | |||
| Firmware Update | MiniUSB Inside | |||
| Protocol | CANOpen | |||
| Structure and Parameter | ||||
| Case | ABS Plastic | |||
| Dimmension | 98*106*47mm | |||
| Lead Rail | DIN35mm | |||
| Power Input | 10~48V (24 Vdc Rated) | |||
| Power Consumption | ~2.5W(24 Vdc) | ~4W(24 Vdc) | ~2.5W(24 Vdc) | |
| Operating Temperature | -20~70℃ | |||
| Storage Temperature | -30~80℃ | |||
| Humidity | 10-90%(None Condense) | |||
| Weight | ~0.28Kg | ~0.32Kg | ~0.28KG | |
| Certificaiton | EMC(EN61000-6-2/4),UL | |||
| Customized Software | WTDUtility | |||
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