ATR8S-00 S2 Yokogawa Relay Output Module

Yokogawa ATR8S-00 S2 Relay Output Module CENTUM DCS Series

Yokogawa ATR8S-00 S2 Relay Output Module CENTUM DCS Series

Availability: 10 left in stock

Yokogawa ATR8S-00 S2 Relay Output Module Configured for discrete signal execution in CENTUM VP and CS 3000 control networks, the...

SKU: ATR8S-00 S2

Manufacturer: Yokogawa
Product No.: ATR8S-00 S2
Product Type: Relay Output Modules
Product Origin: Japan
Payment:T/T, Western Union
Weight: 500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ATR8S-00 S2 Relay Output Module

Configured for discrete signal execution in CENTUM VP and CS 3000 control networks, the Yokogawa ATR8S-00 S2 (ATR8S-00 Relay Output Module) provides direct physical and electrical execution of field-device switching.

Hardware Specifications

Parameter	Specification
Model	ATR8S-00 S2
Brand	Yokogawa
Origin	Japan
Weight	0.5 kg
Dimensions	30 mm x 100 mm x 120 mm
Operating Temp	-10 deg C to +55 deg C
Power Consumption	3 W
Output Channels	8 Relay Outputs
Contact Type	SPST
Contact Rating	2 A at 250 VAC / 30 VDC

DCS Process Control Connectivity

The ATR8S-00 S2 module integrates into the DCS architecture to facilitate high-level control of field actuators, such as solenoid valves and motor starters. The module employs channel-to-bus isolation of 1500 V AC to protect internal logic circuitry from back-EMF or surge transients generated by inductive field loads. Each output channel provides a galvanic path capable of switching up to 2 A, supporting diverse control requirements. To maintain integrity within the control loop, the system ensures that switching commands from the DCS processor are executed with a latency of less than 10 ms, supporting precise timing for process sequencing and interlock logic.

Frequently Asked Questions

Q: Does the ATR8S-00 S2 support hot-swapping during active operation?

A: Yes, the module supports hot-swapping. The interface design allows for the extraction and replacement of the unit while the DCS I/O nest is powered, provided the secondary field circuits are de-energized or isolated to prevent accidental activation of field equipment.

Q: Are there specific requirements for suppressing inductive loads on the relay contacts?

A: Yes, when driving inductive loads like relay coils or solenoid valves, install external surge suppression devices (such as flyback diodes for DC or RC snubbers for AC) at the load terminal. This practice extends the lifespan of the mechanical contacts by preventing arcing during the opening cycle.

Field Installation Guidelines

Mounting: Seat the ATR8S-00 S2 securely into the designated I/O nest slot. Engage the mechanical latching mechanisms to ensure stable connection with the backplane bus, which is necessary for consistent command signal transmission.
Wiring: Terminate field wiring using the pressure clamp terminal blocks. Ensure that wire sizes are compatible with the terminal rating and apply ferrules to all stranded conductors to prevent loose connections caused by thermal cycling or mechanical vibration.
Grounding: Bond the I/O nest chassis to the cabinet earth bar using a low-impedance ground strap. This grounding path is necessary for the internal isolation barriers to function correctly and provides a return path for noise currents.
Inspection: Periodically audit relay contact performance for signs of pitting or welding, especially if the module switches high-frequency duty cycles. Replace the module if the switching delay exceeds the nominal 10 ms specification or if contact resistance indicates wear.

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