Product Core Brief

• Model: PSCAMAAN
• Brand: Yokogawa
• Series: ProSafe-PLC / ProSafe-RS Critical Analog Module
• Core Function: Safety-rated analog I/O module for critical process control loops in Yokogawa safety systems.
• Product Type: Critical Analog Module
• Key Specs: 4–20mA signal | 24VDC power | Class I Div 2 hazardous area approved
• Condition: New Original / New Surplus

Key Technical Specifications

• Manufacturer: Yokogawa
• Part Number: PSCAMAAN
• Module Type: Critical Analog Module
• System Family: ProSafe-PLC / ProSafe-RS safety system
• Power Supply: 24VDC
• Current Draw: 1.6A max
• Signal Type: 4–20mA analog
• Signal Rating: 28VDC max I/O signal
• Safety Approval: FM Class I, Div 2, Groups A, B, C & D
• Temperature Code: T4 at 40°C / T3C at 70°C
• Max Ambient Temperature: 70°C
• Dielectric Test: 1950VDC for 2 seconds
• Marking: CE, AB Type Approved
• Origin Label: Made in EU for Yokogawa by Siemens

Product Introduction

The PSCAMAAN is a Yokogawa critical analog module used in ProSafe-PLC and ProSafe-RS safety systems for handling analog process signals in hazardous and high-integrity applications. It is commonly deployed where safety shutdown, emergency isolation, or critical analog measurement must remain reliable under continuous plant operation.

Its main advantage is the combination of safety-rated analog I/O, hazardous-area certification, and tight integration with Yokogawa safety architectures. For maintenance teams, this means a direct-fit replacement that supports existing loop wiring, safety documentation, and plant acceptance tests without re-engineering the cabinet layout.

QA & Testing SOP

Every unit is treated as a safety-critical component, not a generic spare. Incoming inspection checks the part number, serial number, label data, PCB markings, and connector condition against OEM references.

• Visual & counterfeit check: Inspect housing, label alignment, terminal block, backplane connector pins, and solder joints for rework signs.
• Power-up test: Apply 24VDC on a bench test rack and verify current draw stays within specification with no abnormal heating.
• Analog loop verification: Inject and measure 4–20mA signals using a calibrated loop calibrator and Fluke-class multimeter to confirm signal integrity.
• Insulation/dielectric review: Check insulation resistance and review the 1950VDC dielectric test marking; re-test only if customer QA requires it.
• ESD-safe packing: Store and ship in anti-static bags with foam support to protect backplane pins and terminal connectors.

Installation Pitfalls & Guide

❗ Do not treat this as a standard analog card. It belongs to a safety system, so replacement must follow plant MOC and safety-loop procedures.

❗ Verify power and signal ratings before energizing. The module is rated for 24VDC power and up to 28VDC I/O signal; wrong supply wiring can damage the card or trip the safety node.

❗ Check hazardous-area compliance. If installed in a Class I Div 2 area, confirm enclosure, grounding, wiring seals, and hot-work permits meet site rules. The label warning about disconnecting only in non-hazardous areas still applies.

❗ Handle backplane connectors carefully. Bent pins, dust, or poor seating can cause intermittent faults that look like field instrument failures.

Replacement steps:

1. Pre-install: Confirm tag number, loop drawings, firmware/compatibility notes, and ESD precautions.
2. Removal: De-energize the safety loop if required, label wires, remove the module, and inspect the backplane slot.
3. Install: Seat the module firmly, reconnect wiring, and verify grounding and terminal torque.
4. Power-on test: Restore power, check module status LEDs, verify 4–20mA readings, and confirm safety system diagnostics.

Technical FAQ

Is the price fixed?
No. Pricing depends on condition, stock availability, certification documents, and whether the unit is new original or new surplus. For urgent shutdown replacements, we can prioritize testing and faster dispatch.

What warranty do you offer?
Surplus safety modules typically carry a limited functional warranty, such as 30–90 days, unless otherwise agreed. Final terms depend on stock source and customer QA requirements.

Is it directly compatible with my Yokogawa safety system?
It is a Yokogawa ProSafe-PLC / ProSafe-RS critical analog module, but slot compatibility, firmware level, and system version should be confirmed against your cabinet documentation before ordering.

Can this replace an obsolete card?
In many cases, yes, but only after verifying the exact part number, signal type, power rating, and safety approval. Do not substitute based on外形 or slot fit alone.

Do you provide test records?
Yes. We can provide basic bench test notes, photos of labels and connectors, and packing records. Full calibration certificates or dielectric re-tests can be arranged if required by your QA team.