ET-7251 CR
Ethernet I/O Module with 2-port Ethernet Switch and 16-ch Digital input
- Built-In Web Server
- Web HMI
- Support for both Modbus TCP and Modbus UDP Protocols
- Communication Security
- 2-port Ethernet Switch for Daisy-Chain Topology
- Dual Watchdog
- Wide Operating Temperature Range: -25 ~ +75 °C
- I/O Pair Connection
- Built-In I/O
- DI/Counter: 16 Channels
The ET-7051/PET-7051/ET-7251/PET-7251 provides 16 wet contact digital input channels. Each input channel can be used as a 32-bit counter. It features optical isolation for 3750 Vrms of transient overvoltage protection but doesn’t provide channel-to-channel isolation. It can safely be used in applications where hazardous voltages are present.
ET-7251 CR: Ethernet I/O Module with 2-port Ethernet Switch, with 16-ch DI (RoHS)
Software
Built-In Web Server: Yes
Web HMI: Yes
I/O Pair Connection: Yes
Communication
Ethernet Port: 2 x RJ-45, 10/100 Base-TX, Switch Ports
Protocol: Modbus/TCP, Modbus/UDP
Security: ID, Password and IP Filter
Dual Watchdog: Yes, Module (0.8 second), Communication (Programmable)
LED Indicators
L1 (System Running): Yes
L2 (Ethernet Link/Act): Yes
L3 (DI/DO status): Yes
2 Way Isolaiton
Ethernet: 1500 VDC
I/O: 2500 VDC
EMS Protection
ESD (IEC 61000-4-2): 4 kV Contact for each terminal and 8 kV Air for Random Point
EFT (IEC 61000-4-4): +/-4 kV for Power
Power Requirements
Reverse Polarity Protectionn: Yes
Powered from terminal block: Yes, 10 ~ 48 VDC
Consumption: 2.9 W
Mechanical
Dimensions (W x L x D): 76 mm x 120 mm x 38 mm
Installation: DIN-Rail or Wall mounting
Environment
Operating Temperature: -25 °C ~ +75 °C
Storage Temperature: -30 °C ~ +80 °C
Humidity: 10 ~ 90% RH, non-condensing
Digital Input/Counter
Input Channels: 16
Type: Wet Contact (Sink, Source)
On Voltage Level: +10 VDC ~ +50 VDC
Off Voltage Level: +4 VDC max.
Input Impedance: 10 kΩ
Counters:
Max. Count: 4,294,967,285 (32 bits)
Max. Input Frequency: 100 Hz
Min. Pulse Width: 5 ms
Overvoltage Protection: +70 VDC