EC0*A
EC0*A is the official Yokogawa model and Style A designation for a control-output isolator card. EC0*A is used in compatible signal-conditioner assemblies for an isolated 4–20 mA control-output path.
Scope note: EC0*A is supplied as control output isolator card; terminal hardware, cables and system engineering are selected or verified separately.
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+86 18150117685Control Output Isolator Card
EC0*A is the official Yokogawa model and Style A designation for a control-output isolator card. EC0*A is used in compatible signal-conditioner assemblies for an isolated 4–20 mA control-output path.
Application guidance: EC0 Style A maintenance and spare-part selection. Isolated current control outputs in MHM nests. Existing-loop refurbishment with wiring retained only after verification.
Ordering note: Reproduce EC0*A exactly and confirm the installed hardware, terminal arrangement, project release and site requirements.
| Manufacturer | Yokogawa Electric Corporation |
|---|---|
| Full part number | EC0*A |
| Function | Control output isolator |
| Style | A |
| Signal | 4–20 mA DC input/output |
| Outputs | One |
| Supply | 24 V DC ±10% |
| Load-open detection | Provided |
| Mounting | Compatible MHM signal-conditioner nest |
Before EC0*A replacement, retain the approved configuration and follow the applicable host maintenance and commissioning procedure. Verify the complete hardware and software combination before migration.
EC0*A uses the digit zero. The Yokogawa model/style table lists EC0 with Style A for the control-output isolator.
EC0*A provides an isolated current control-output path; verify the existing 4–20 mA loop and its connected field load.
EC0*A requires the appropriate MHM output position. Yokogawa excludes EC0 output cards from MHC nests.
For EC0*A, check the documented nest supply, terminal polarity and loop load against the as-built wiring before the controlled loop check.
EC0*A has load-open detection; use the Yokogawa-documented AR-HA selection for EC0 when an arrester is required.
EC0*A should be matched to the installed style and assembly. Obtain the revision-compatibility review before accepting a different EC0 style.
Supply EC0*A, the full assembly tag, nest model, output-loop details, quantity and required delivery date.
Send the exact EC0*A nameplate, quantity, installed Yokogawa system, terminal hardware, destination and clear photos. Availability, condition and compatibility will be confirmed before quotation.
Verify the cited document revision and its applicability to the complete model, style and installed assembly. Family-level documentation does not establish interchangeability for an unlisted suffix.
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