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PET-7255 - 8 Channel DI Dry, Wet, and 8 Channel DO with 650 mA / Channel by ICP DAS
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PoE Ethernet I/O Module with 2-port Ethernet Switch, with 8-ch Digital Input (32-bit Counter), 8-ch Digital Output. Support for both Modbus TCP and Modbus UDP Protocols. Built-in Web Server. Has operating temperatures of -25°C ~ +75°C (-13°F ~ +167°F)
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- 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.
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 |
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 |
Mechanical |
Dimensions (W x L x H) |
76 mm x 120 mm x 38 mm |
Installation |
DIN-Rail or Wall mounting |
Environmental |
Operating Temperature |
-25°C ~ +75°C (-13°F ~ +167°F) |
Storage Temperature |
-30°C ~ +80°C (-22°F ~ +176°F) |
Humidity |
10 ~ 90% RH, Non-condensing |
I/O Specifications
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 |
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. |
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 |
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