S9185F Yokogawa Signal Converter Isolator

Yokogawa S9185F CENTUM DCS Signal Converter Isolator

Yokogawa S9185F CENTUM DCS Signal Converter Isolator

Availability: 20 left in stock

Yokogawa S9185F DCS Signal Converter Isolator Module Configured for analog signal conditioning in CENTUM CS 1000 and CS 3000 DCS...

SKU: S9185F

Manufacturer: Yokogawa
Product No.: S9185F
Product Type: Signal Converters
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa S9185F DCS Signal Converter Isolator Module

Configured for analog signal conditioning in CENTUM CS 1000 and CS 3000 DCS platforms, the Yokogawa S9185F (S9185F Signal Converter / Isolator) provides direct physical/electrical execution. The module converts incoming 4-20 mA DC loop signals or DC voltage inputs into conditioned 4-20 mA analog outputs for backend processing. Mounted directly into the FIO system rack, the hardware accepts field transmitter currents and enforces strict galvanic isolation across input, output, and system bus pathways to maintain process signal integrity.

Hardware Specifications

Parameter	Specification
Model	S9185F
Brand	Yokogawa
Origin	Japan
Weight	1.50 kg net
Dimensions	125 mm W x 130 mm H x 248 mm D
Operating Temp	0 to +55 deg C
Power Consumption	3 W to 5 W (supplied via 24 VDC I/O rack backplane)
Input Signal	4-20 mA DC or voltage input
Output Signal	4-20 mA DC
Accuracy	+/-0.1% of span
Response Time	10 ms or less
Isolation	Three-way galvanic isolation (Input to Output to System Bus)

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation Integration

The S9185F incorporates three-way galvanic isolation barriers to decouple field-side measurement loops from internal DCS backplane electronics. When conditioning process variables routed through long field wiring runs, the isolation circuitry attenuates common-mode electrical noise and eliminates ground loop current offsets. The module maintains high signal fidelity for 4-20 mA HART loop protocol communications and sensitive temperature compensation circuits, preventing high-voltage transients from migrating across adjacent rack slots.

Frequently Asked Questions

Q: Does the S9185F module require an external dedicated power terminal connection?

A: No. The card draws its nominal operating power of 3 W to 5 W directly from the 24 VDC supply integrated into the FIO I/O rack backplane bus.

Q: What impact does three-way galvanic isolation have on loop measurement accuracy?

A: Three-way isolation separates the input circuit, output circuit, and system backplane logic. This structure stops ground potential differences between field instruments and control cabinets from degrading the +/-0.1% span output accuracy.

Q: Is hot-swapping permitted for the S9185F during active DCS operations?

A: De-energize field loop wiring prior to module extraction or insertion. Unseating the module under active field power can disrupt downstream 4-20 mA control loops and trigger system process alarms.

Field Installation Guidelines

Backplane Slot Alignment: Align the module top and bottom card guides with the FIO rack chassis rails before sliding the unit firmly home to prevent pin bending on the rear backplane connector.
Cable Shield Terminations: Terminate overall field cable shield braids to the main cabinet functional earth (FE) ground bar using short, low-impedance grounding straps.
Signal Wiring Separation: Route incoming 4-20 mA transmitter field leads in dedicated low-voltage instrument ducts, maintaining a minimum clearance of 200 mm from AC power distribution lines.
Enclosure Thermal Ventilation: Retain at least 50 mm of unobstructed vertical clearance above and below the FIO rack assembly to facilitate free air convection across the card heat sinks.

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