Description
Product Overview
The Metso D201135L is listed as an analog input unit, Series A, with a 10 V designation. Its role is to interface compatible voltage-output field devices with a control system, allowing process variables to be represented as input values for operator displays, alarms, sequencing, and regulatory control. Depending on the installed application, voltage signals may originate from transmitters, signal conditioners, or other instrumentation. The precise supported signal ranges and wiring arrangement should be checked against the applicable hardware documentation rather than inferred from the part number alone.
In a maintenance or obsolescence project, the important issue is not simply whether a replacement card fits physically. The D201135L must match the installed I/O architecture, backplane or carrier, channel configuration, and controller configuration. If the existing system uses voltage signals, confirm the field-device output range and scaling in the control application. A module intended for voltage inputs should not be treated as interchangeable with a current-input module solely because both belong to the same product family.
For procurement, request clear photographs of the module label, front panel, connectors, and circuit-board identification where available. Ask the supplier to confirm the exact D201135L part number and revision, condition, and whether the unit has been functionally tested. For used or surplus stock, visual inspection alone cannot confirm analog accuracy or channel performance. If the part is intended for a live process, establish a tested spare and an approved changeover plan before removing the installed unit.
Product Introduction
The Metso D201135L is a legacy analog input spare used in industrial automation environments where compatible control hardware remains in service. Its published description identifies it as a Series A analog input unit with a 10 V designation.
Before installing a replacement, compare the existing card’s identification and hardware revision with the offered unit. Also verify field wiring, input scaling, and any controller-side configuration requirements. Do not assume that another analog input card is a direct substitute without confirmation from the system documentation.
Key Technical Specifications
| Specification | Details |
|---|---|
| Product model | D201135L |
| Manufacturer / brand | Metso Automation / Valmet |
| Product type | Analog input unit |
| Series | Series A |
| Module designation | AI8V |
| Input signal designation | 10 V analog voltage input |
| Number of channels | Eight-channel designation is suggested by AI8V; verify against the applicable manual |
| Input range and accuracy | Not independently verified |
| Resolution and conversion rate | Not independently verified |
| Power supply requirements | Not independently verified |
| Communication protocol | Not independently verified; confirm the system interface |
| Installation method | Confirm the installed rack or carrier arrangement |
| Operating temperature | Not independently verified |
| Protection rating | Not independently verified |
| Condition | Confirm actual condition with supplier |
The model and general product designation are supported by published catalog listings, but detailed electrical specifications were not established from an authoritative manufacturer datasheet in the available sources.
D201135L
Related Products
The following are useful reference points when checking legacy Metso/Valmet hardware. Similar branding does not establish interchangeability.
- D201134L — Listed as a Metso digital input module; a different I/O function.
- D201129L — Listed as a digital I/O-related module in the same broader product family.
- D201159L — Another Metso/Valmet model appearing in automation spare-part listings.
- D201815L — A Metso/Valmet module model listed in the same spare-parts catalog.
- D201830L — Another listed Metso/Valmet module; verify its function and system compatibility independently.
Frequently Asked Questions
Q1: What is the Metso D201135L used for?
It is listed as an analog input unit with a 10 V designation. Its intended role is to acquire compatible analog voltage signals for an industrial control system.
Q2: Is the an analog or digital input module?
It is identified as an analog input unit, not a digital on/off input module. Confirm the actual input type and range from the installed unit’s label and documentation.
Q3: Does the support 4–20 mA transmitters?
That has not been verified. The available catalog descriptions associate the unit with 10 V analog input. Do not connect a current-loop transmitter until the module’s approved input modes and wiring requirements are confirmed.
Q4: Is the hot-swappable?
Hot-swap capability has not been independently verified. Follow the system-specific maintenance manual and site isolation procedure; do not remove the card under power unless the manufacturer explicitly permits it.
Q5: What should be checked before purchasing a replacement?
Confirm the complete model number, hardware revision, front-panel and connector details, system platform, input type, and required signal range. Ask for a functional test report if the module is used or refurbished.
Q6: How can the condition of a supplied be verified?
Request photographs of the actual unit and its label, confirmation of the stated condition, and test evidence covering the available channels. A visual inspection alone does not establish analog accuracy.
Q7: Can another Metso analog input module replace the ?
Not automatically. Check the hardware documentation, channel type, electrical range, wiring, and controller configuration before approving a substitute.
