Technical Specifications

Power Supply: Backplane bus 24V ±10%, power consumption approximately 28W

Communication Interfaces:

Remote I/O Master Station Bus (Special High-Speed)

Ethernet 100Base-TX (2 ports, supports redundancy)

RS-232/422/485 (each 1 line)

DeviceNet Slave Station (optional)

I/O Capacity: Supports expansion up to 256 points of input / 256 points of output (remote slave station)

Transmission Distance: Remote bus maximum 800m (shielded twisted pair); Ethernet 100m

Transmission Rate: Remote bus 20Mbps; Ethernet 100Mbps

Environment: Operating temperature 0–55℃, storage temperature -20–70℃, humidity 10%–90% (no condensation)

Structure: 3U standard board card, metal shielding enclosure, weight approximately 0.7kg

Installation and Wiring

Vertically installed in the 3U vacant slot of the control cabinet, leaving ≥50mm of space for heat dissipation on top and bottom, and fixed screws tightened for vibration prevention. The metal enclosure is reliably connected to the cabinet ground (ground resistance ≤ 4Ω).

Internal: Power supply and system communication are automatically completed by the backplane bus, without internal strong current wiring.

External: Connect remote I/O slave station module, Ethernet switch, serial peripheral, DeviceNet device; shielded line single-ended grounding, strong and weak current separated wiring, spacing ≥ 10cm; remote bus and Ethernet use dedicated shielded lines, connector compression firmly.

Maintenance and Care

Daily observation of board card power supply, communication, and fault indicator light status, no bulging, burning, or peculiar smell on the board surface.

Quarterly: Use low-pressure dry compressed air to blow dust from the board card and slots, maintain good heat dissipation.

Every half year: Check the tightness of all plugs, terminals, capacitors, and solder joints, no aging, leakage, or retest the grounding continuity.

Long-term shutdown: Cut off the power supply, do dust and moisture protection; preheat for 30 minutes with no external equipment connected before restarting.

Fault Troubleshooting

No power indicator: Backplane DC24V power supply abnormal, board card fuse blown, power chip damaged; measure bus voltage, check fuse, replace board card for testing.

Remote communication interruption (light does not flash): Master station / slave station interface loose, communication chip failure, slave station module power-off; reinsert plug, measure interface signal, troubleshoot slave station power supply.

Ethernet： Network cable damaged， interface loose， IP conflict， redundant switching abnormal； replace network cable， reinsert interface， check IP and redundant parameters.

I/O signal no response： I/O terminal loose， optocoupler damaged， slave station module failure； check wiring， measure signal level， replace slave station module.

Data packet loss / error code： Poor shielding， interference from strong and weak current， unstable grounding， missing terminal resistor； optimize wiring， reinforce grounding， replace shielded line， check terminal resistor.

Random error and system crash： Chip short circuit， slot oxidation， excessive interference， firmware abnormal； clean slot， reinsert， replace board card， update firmware for verification.