ASI533-S00 Yokogawa Digital Input Module

ASI533-S00 Yokogawa CENTUM VP Digital Input Module

ASI533-S00 Yokogawa CENTUM VP Digital Input Module

Availability: 20 left in stock

Yokogawa ASI533-S00 CENTUM VP Digital Input Module The Yokogawa ASI533-S00, also cataloged as the ASI533-S Digital Input Module, operates as...

SKU: ASI533-S

Manufacturer: Yokogawa
Product No.: ASI533-S
Product Type: Digital Input Cards
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ASI533-S00 CENTUM VP Digital Input Module

The Yokogawa ASI533-S00, also cataloged as the ASI533-S Digital Input Module, operates as a dedicated hardware component for acquiring discrete field status signals within Yokogawa CENTUM VP and CS 3000 DCS platforms. Mounting directly into the I/O rack backplane, the unit monitors dry contacts, push buttons, limit switches, and safety interlocks across 16 isolated input channels. The module converts external 24 VDC binary field states into system logic signals while maintaining physical galvanic separation between field wiring and the central processing backplane.

Suffix Breakdown & Model Matrix

Suffix Code	Specification	Functional Description
ASI533	Base Model	CENTUM VP Digital Input Hardware Module
-S	Standard Specification	16-channel isolated contact input configuration
00	Style Revision	Standard hardware revision for backplane integration

Hardware Specifications

Parameter	Specification
Model	ASI533-S00
Brand	Yokogawa
Origin	France
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	5 W maximum (supplied via rack backplane)
Channel Capacity	16 isolated input channels
Nominal Input Voltage	24 VDC
Input Current	~7 mA per channel
Response Time	10 ms or less
Insulation Resistance	100 Mohm minimum at 500 VDC
Withstand Voltage	1500 VAC dielectric isolation for 1 minute

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

The ASI533-S00 module incorporates robust channel-to-channel and bus-level galvanic isolation barriers rated at 1500 VAC to safeguard internal DCS logic networks against high-voltage field faults. When installed in mixed-signal racks alongside analog input cards running 4-20 mA HART loop protocol signals or millivolt CJC (cold junction compensation) sensors, the individual channel isolation suppresses common-mode noise and ground loop potential. Built-in shielding limits electromagnetic interference (EMI) transmission, preserving measurement accuracy across adjacent low-level analog channels.

Frequently Asked Questions

Q: What power source energizes the field contact loops connected to the ASI533-S00 input channels?

A: Field contacts require an external, regulated nominal 24 VDC power supply routed through the input terminals to draw the ~7 mA operating current when contacts close.

Q: Can the ASI533-S00 module accept AC voltage inputs directly on its terminals?

A: No. The input circuitry accepts only 24 VDC voltage states or passive dry contact closures. Applying AC voltage directly to the channels causes hardware failure.

Q: Is hot-swapping allowed for this digital input card during active system operations?

A: Module removal or replacement requires de-energizing the corresponding terminal block field power loops to avoid unwanted signal transitions or arcing across connector pins.

Field Installation Guidelines

Cabinet Wiring Separation: Route 24 VDC discrete input wiring separately from high-voltage AC power lines and motor leads with a minimum physical clearance of 200 mm to avoid inductive noise coupling.
Shield Grounding Terminal: Connect all incoming field cable overall screen drains directly to the designated cabinet functional earth (FE) ground bar using short, low-impedance copper conductors.
Convection Space Clearances: Maintain at least 50 mm of vertical ventilation space above and below the I/O rack assembly to facilitate free air convection and prevent thermal buildup.
Terminal Screw Tightening: Torque terminal block retaining screws to 0.5 to 0.6 Nm to ensure gas-tight electrical contact and prevent loose wire connections under industrial vibration.

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