PET-7255 CR ICP DAS Digital IO Modules

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.
PET-7255 CR: PoE Ethernet I/O Module with 2-port Ethernet Switch, with 8-ch DI, 8-ch DO (RoHS)

• Built-in Web Server
• Web HMI
• Support for oth Modbus TCP and Modbus UDP Protocols
• Communication Security
• 2-port Ethernet Switch for Daisy-Chain Topology
• Dual Watchdog
• Wide Operating Temp. Range: 
• I/O Pair Connection
• Built-in I/O:
• DI/Counter: 8 Channels
• DO: 8 Channels

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, Swtich Ports
PoE: Yes
Protocol: Modbus/TCP, Modbus/UDP
Security: ID, Password and IP Filter
Dual Watchdog: Yes, Module (0.8 second), Communication (Programmable)

LED Indicators

for System Running: Yes
for Ethernet Link/Act. Yes
for DI/DO status:Yes
for PoE Power: Yes

Mechanical

Dimensions (W x L x H): 76 mm x 120 mm x 38 mm
Installation: DIN-Rail or Wall mounting

2-Way Isolation

Ethernet: --
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): ±2 kV for Power Line
Surge (IEC 61000-4-5): ±2 kV for Power Line

Power Requirements

Reverse Polarity Protection: Yes
Powered from Terminal Block: 12 ~ 48 VDC
Powered from PoE: Yes, IEEE 802.3af, Class1
Consumption: 4.0 W (Max.)

Environmental

Operating Temperature: -25 ~ +75°C
Storage Temperature: -30 ~ +80°C
Humidity: 10 ~ 90% RH, Non-condensing

I/O Specification

Digital Input/Counter

Channels: 8
Contact: Dry +Wet
Sink/Source (NPN/PNP): Dry: Source; Wet: Sink/Source
Wet Contact: On Voltage Level: +10 VDC ~ +50 VDC ; Off Voltage Level: +4 VDC Max.
Dry Contact: On Voltage Level: Close to GND ; Off Voltage Level:  Open
Input Impedance: 10 kΩ
Counters:

Digital Output

Channels: 8
Type: Isolated Open Collector
Sink/Source (NPN/PNP): Source
Max. Load Current: 650 mA/channel at 25°C
Load Voltage: +10 VDC ~ +40 VDC
Overvoltage Protection: 47 VDC
Overload Protection: --
Short-circuit Protection: Yes
Power-on Value: Yes, Programmable
Safe Value: Yes, Programmable

• 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.