SAI143-S33 YOKOGAWA Analog Input I/O Module (For FIO) Safety Control Unit And Safety Node Unit

SAI143-S33 YOKOGAWA Analog Input I/O Module (For FIO) Safety Control Unit And Safety Node Unit

Additional Information:

This GS describes the hardware specifications of the analog I/O modules that can be mounted on the safety node unit and the safety control unit.

Description:

Current Input Module:This module inputs 4 to 20 mA signals from the field. The SAI143 can be made dual redundant.

• No Zener barriers can be connected to this module. An isolation barrier should be used when an intrinsic safety instrumented system is used.
• 500 V AC when dedicated signal cable is used.
• ±32 µA (input range under 0.05 mA) (Style code S3 or later)
• Rated accuracy of style code S3 or later is ±16 µA (Input range 0.05 to 23 mA).
• Rated accuracy of style code S2 or earlier is ±16 µA (Input range 1 to 23 mA).
• When SAI143-S£3 or SAI143-H£C is used in the ambient temperature more than 60°C, number of input channels which a user can use is restricted. Refer to “ProSafe-RS Outline of I/O Modules (for FIO)” (GS 32P06K60-01EN).
• The maximum voltage drop in the input protection circuit is 0.45 V. The module input impedance varies from 272.5 Ω (20 mA) to 362.5 Ω (4 mA).
• This function enables to reset the alarm state of Fire and Gas devices by turning off the transmitter power supplied from this module in 2-wire setting. Supported by R4.03.00 or later and style code S4 or later.

Product Details:

Datasheet Link:Yokogawa SAI143-S33.pdf