Metso Valmet A413095 GDU Module

Can directly drive small and medium-sized actuators (such as solenoid valves and small contactors) without additional intermediate relays

Physical Characteristics

Shell Material: PA66 + glass fiber reinforced engineering plastic

Impact strength up to 8kJ/m², acid and alkali corrosion resistance, suitable for harsh industrial environments

Fully dust-proof and spray-proof (no damage from water spraying in any direction), suitable for humid and dusty scenarios

Performance Parameters

Control Precision: Closed-loop control error ≤±0.1% FS

Supports multiple control algorithms such as PID, fuzzy PID, and adaptive PID to meet the control needs of different processes

Control algorithms can be flexibly selected according to process requirements, adapting to complex industrial scenarios

Safety Parameters

Overvoltage Protection: Automatically cuts off when input voltage ≥30V DC

Prevents damage to internal control circuits caused by excessive voltage due to power supply faults

1. Use a multimeter to measure the on-off status of the 24V DC power supply line, check the terminal blocks and re-tighten them, and repair the open circuit point; 2. Replace with a spare power adapter with power ≥20W and conforming to the 24V DC±10% specification, and test whether the power supply is normal; 3. If there is still no response after replacing the power adapter, contact Metso-authorized maintenance personnel to check whether the internal power chip (such as LM7824) is burned out and replace the damaged component; 4. Check the grounding condition of the module shell to ensure the grounding resistance ≤4Ω, avoiding static accumulation that damages the internal circuit

1. Calibrate the sensor with a standard signal generator (such as FLUKE 744) or replace it with a spare sensor, and observe whether the data returns to normal; 2. Check the signal line terminal blocks, re-plug and tighten them, use a multimeter to measure the on-off status of the signal line, and repair the open circuit point; 3. Replace with a twisted pair with a shielding layer, and ground the shielding layer at one end (near the module end) to reduce electromagnetic interference; 4. Connect a normal sensor to another spare input channel; if the data is normal, it indicates that the original channel is damaged, and the module needs to be repaired or replaced

1. Optimize the control algorithm parameters (such as adjusting the P, I, D values of PID) through Metso Control Tool Pro software, or switch to the adaptive PID algorithm to reduce parameter fluctuations; 2. Check the operating status of the actuator, repair the jammed control valve, calibrate the frequency converter output, and ensure the actuator responds normally; 3. Investigate the source of process interference and take measures such as stabilizing the feed rate and adding insulation layers to reduce external interference; 4. Shorten the module sampling cycle (it is recommended to set it to 5-10ms) to improve the speed of data acquisition and control response

1. Check the output channel enable status and control logic through the software, and correct incorrect configurations (such as changing "manual output" to "automatic output"); 2. Turn off the module power, use a multimeter to measure the on-off status of the relay contacts (normal on-resistance ≤1Ω, off-resistance is infinite); if the contacts are oxidized, polish them with fine sandpaper; if burned out, replace with a relay of the same model (such as Omron G5LE); 3. Check the output load current to ensure it does not exceed the rated value of 4A; if the load is too large, add an intermediate relay to expand the load capacity; 4. If the above inspections are normal, the driver chip may be damaged, and the module needs to be returned to the factory for chip replacement

1. Use a network cable tester to detect the on-off status of the Ethernet line, re-plug the network cable and tighten the connector, and repair the faulty line; 2. Verify the communication parameters between the module and the central system to ensure the IP address is in the same network segment (e.g., 192.168.1.XXX), and the baud rate (e.g., 115200bps) and parity bit (e.g., no parity) are consistent; 3. Connect the network cable to a spare communication interface (such as switching from Ethernet 1 to Ethernet 2); if communication is normal, it indicates that the original interface is damaged, and the module needs to be repaired; 4. Restart the communication software of the central control system, or reinstall the software and update it to the latest version to eliminate software faults