METSO IOP334 24V DC Isolated Digital Input Module

Product Description

The IOP334 is a Metso (Valmet) MaxPAC / Damatic XDi series isolated digital input module, part of the A413 rack I/O family. It is used to collect 24V DC discrete status signals from field sensors, limit switches, relay contacts and interlock devices. Every channel provides galvanic isolation between field side and DCS internal bus, effectively suppressing interference and protecting the control backplane. It can be configured for redundant operation, and plugs into the A413003 basis unit, working with PDP401 power module and FBC2 A413077 communication module.

Features

• Part No: IOP334, alternate drawing number: 181526
• 24V DC isolated digital input type, multi-channel DI
• Galvanic isolation per channel, anti-interference for noisy mill environments
• Support redundant hot-standby configuration for high-reliability interlock loops
• Onboard LED indicators for module health, bus status and individual channel status
• Jumper configurable for signal polarity and bus address setting
• Conformal coating, suitable for pulp & paper, mining humid and dusty conditions
• Hot-swappable under redundant rack setup
• Standard slot form factor for A413 series backplane

Applications

• Pulp and paper mill DCS, paper machine interlock and status monitoring
• Mineral processing, crushing, flotation and thickener control cabinets
• Metallurgy and chemical plant discrete signal acquisition
• Legacy Metso MaxPAC / Damatic XDi system spare replacement and retrofit
• Field switch, valve feedback, motor run/stop status signal input

FAQ

Q: What is the difference between IOP334 and IOP330?
A: IOP334 is isolated 24V DI; IOP330 is non-isolated common 24V digital input module.

Q: What rack is IOP334 compatible with?
A: It fits A413003 basis unit, matched with PDP401 power supply module.

Q: Is IOP334 discontinued?
A: Yes, this legacy MaxPAC I/O hardware is end-of-life, supplied as surplus, refurbished and tested spare parts only.

Q: Can IOP334 work in redundant mode?
A: Yes, two IOP334 modules can be paired for redundant DI input circuits for critical interlocks.