ET-7255 CR ICP DAS Digital IO Modules

• 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: 8 Channels
  • DO: 8 Channels

The ET-7255/PET-7255 provides 8 Dry/wet contact digital input channels and 8 source-type digital output channels. It features optical isolation for 2500 VDC of transient overvoltage protection but doesn’t provide channel-to-channel isolation. Each input channel can be used as a 32-bit counter and each output channel can drive 650 mA load. The power-on value and safe value of digital output channel are programmable. It can safely be used in applications where hazardous voltages are present.
ET-7255 CR: Ethernet I/O Module with 2-port Ethernet Switch, with 8-ch DI, 8-ch DO (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 VCD

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): +/-2 kV for Power
Surge (IEC 61000-4-5): +/-2 kV for Power

Power Requirements

Reverse Polarity Protectionn: Yes
Powered from terminal block: Yes, 10 ~ 48 VDC
Consumption: 3.9 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: 8
Type: Dry + Wet (Dry: Source, Wet: Sink/Source)
Wet Contact:
         On Voltage Level: +10 VDC ~ +50 VDC
         Off Voltage Level: +4 VCD Max.
Dry Contact:
         On Voltage Level: Close to GND
         Off Voltage Level: Open
Input Impedance: 10 kΩ
Counters:
         Max. Count 4,294,967,295 (32 bits)
         Max. Input: Frequency 100 Hz
         Min. Pulse Width 5 ms
Overvoltage Protection: +70 VDC
Effective Distance 500 M max.