Yokogawa ASD143-P00 Digital Input Module with Built-In Barrier

Yokogawa ASD143 Digital Input Module with Built-In Barrier (16-channel, NAMUR Compatible, Isolated) (with ISA Standard G3 option and temperature (-20 to 70 °C) option)

Specification

Item	Specification
Model	ASD143
Number of input channels	16, isolated
Input signal	NAMUR (IEC 60947-5-6) compatible
Withstanding voltage	1500 V AC
Functions	Status input (input response time: 15 ms), pushbutton input (minimum ON detection time: 20 ms, maximum ON/OFF cycle: 25 Hz)
Maximum current consumption	150 mA (5 V DC), 110 mA (24 V DC)
Weight	Approx. 0.30 kg
External connection	Pressure clamp terminal (ATSB4?)
Barrier type	Isolated interface

Table List of Parameters (FM) of Modules with Built-in Barrier

Modules	Uo (V)	Io (mA)	Po (mW)	Ui (V)	Co (nF)	Lo (mH)	*Remarks (1)	IIC	IIB	IIA
Single	9.8	21	52	–	1100	7600	11600	26	107	214
Redundant	9.8	41	101	–	1100	7600	11600	7	28	56

ATEX parameters

Uo: Maximum open circuit voltage
Io: Maximum output current
Po: Maximum output power
Ui: Maximum input voltage
Co: Output capacitance
Lo: Output inductance
Remarks (*1): See the Yokogawa ASD143 Digital Input Module with Built-In Barrier manual for more information.

IIC, IIB, and IIA

IIC: Equipment intended for use in zones 1 and 2, where an explosive atmosphere consisting of a mixture with air of gases, vapors, or mists is likely to occur occasionally.
IIB: Equipment intended for use in zones 1 and 2, where an explosive atmosphere consisting of a mixture with air of dust clouds is likely to occur occasionally.
IIA: Equipment intended for use in zones 1 and 2, where an explosive atmosphere consisting of a mixture with air of flammable gases or vapors is likely to occur occasionally.

Please note that these are just general guidelines. The specific ATEX requirements for your application should be determined by a qualified engineer.

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