K-WANG
This document describes about I/O Modules with Built-in Barrier (for FIO) which can be installed in Zone 2 or
Division 2 and connected to devices located in Zone 0, 1, or Division 1.
These modules have galvanic isolation between the field interface and systems but they do not have isolation
between channels.
YOKOGAWA AFV30D-S41 I/O Modules with Built-in Barrier
These modules comply with ISA S71.04 class G3. and they can be located in the ambient temperature of -20 to 70
°C.
When connecting these modules to the intrinsically safe circuit, refer to documents “Explosion Protection” (TI
33Q01J30-01E) and “Explosion Protection of FIO Products” (IM 33K01J30-50E) for ATEX approval along with this
General Specifications (GS).
Follow the EC-type Examination Certificate or FM certification for details of the rules and regulations of installing
these modules in the intrinsically safe environment. It is especially important to follow the “Special Conditions”
stated in these certificates.
In case these I/O modules with built-in barriers are to comply with FM approval (FM3610), install them on the
following field control units (FCU) or ESB bus node units equipped with power supply modules of PW481-11.
PW482-11. or PW484-11.
Field Control Units: AFV30D-S4111. AFV30S-S3111. AFV30S-S4111
ESB Bus Node Units: ANB10D-41. ANB10S-31. ANB10S-41
ANB10D-43. ANB10S-33 , ANB10S-43
Optical ESB Bus Node Unit: ANB11D-23. ANB11D-43
ANB11S-13. ANB11S-23. ANB11S-33. ANB11S-43
Current Input Modules (Isolated)
Items Specifications
Model ASI133
Number of input channels 8. isolated
Input signal 4 to 20 mA
Allowable input current 22.5 mA
Withstanding voltage 1500 V AC
Input resistance Power ON For 2-wire: 400 Ω (I=20 mA) to 750 Ω (I=4 mA)
For 4-wire: 485 Ω (I=20 mA) to 925 Ω (I=4 mA)
Power OFF 1 MΩ or larger
Accuracy ±16 µA
Step response time 100 ms
Data update period 10 ms
Transmitter power supply 16 V DC or higher (output current limit: 20 mA)
Maximum normal mode input voltage applied to
the terminals by 4-wire transmitter 25 V
Drift due to ambient temperature change ±16 µA/10 °C
Maximum current consumption 150 mA (5 V DC), 450 mA (24 V DC)
Weight Approx. 0.30 kg
External connection Pressure clamp terminal (ATSA3□)
HART communication Available
Barrier type Isolated interface
Note: When short circuits occur in two or more channels in the field, all channels of the module fails for intrinsic safety.
l Current Output Modules (Isolated)
Items Specifications
Model ASI533
Number of output channels 8. isolated
Output signal 4 to 20 mA
Maximum output current 23 mA
Withstanding voltage 1500 V AC
Allowable load resistance 0 to 750 Ω at 20 mA, 0 to 600 Ω at 23 mA
Accuracy ±48 µA
Step response time 100 ms
Data update period 10 ms
Drift due to ambient temperature change ±16 µA/10 °C
Maximum current consumption 150 mA (5 V DC), 350 mA (24 V DC)
Weight Approx. 0.30 kg
External connection Pressure clamp terminal (ATSS3)
HART communication Available
Barrier type Isolated interface
Note: When short circuits occur in two or more channels in the field, all channels of the module fails for intrinsic safety
TC, mV Input/RTD/POT Input Modules (Isolated)
Items Specifications
Model AST143 (*1) (*2) ASR133 (*1)
Number of input channels 16. isolated 8. isolated
Input signal
TC: IEC 60584-1 (ITS-90)
Type B (*3), E, J, K, N, R, S, T
mV: -100 to 150 mV, -50 to 75 mV
RTD: 2.3 and 4-wire type
IEC 60751 (ITS-90): Pt50. Pt100. Pt200. Pt500. Pt1000
DIN 43760-1987: Ni100. Ni200
Minco: Ni120
POT: 3-wire type 0 to 10 kΩ
Switching input signal TC/mV can be set individually for CH1
to CH16. RTD/POT can be selected individually for CH1 to CH8.
Allowable input voltage ±5 V ±5 V
Withstanding voltage 1500 V AC 1500 V AC
Input resistance Power ON 1 MΩ or larger 1 MΩ or larger
Power OFF 1 MΩ or larger 1 MΩ or larger
Accuracy (at 23 °C) TC: ±40 µV
mV: ±80 µV
Pt50. Pt100. Ni100. Ni200. Ni120: ±150 mΩ
Pt200: ±300 mΩ
Pt500: ±600 mΩ
Pt1000: ±1.2 Ω
POT: ±2 Ω
Allowable total resistance of signal
source plus wiring 1000 Ω or less 50 Ω per load (*4)
Effect of allowable signal source
resistance (1000 Ω) ±20 µV –
Reference junction compensation
accuracy ±1 °C (*5) (*6) –
Measurement current – 150 µA
Temperature drift TC: ±125 µV/10 °C
mV: ±250 µV/10 °C
Pt50. Pt100. Ni100. Ni200. Ni120: ±325 mΩ/10 °C
Pt200: ±650 mΩ/10 °C
Pt500: ±1.3 Ω/10 °C
Pt1000: ±2.6 Ω/10 °C
POT: ±5.2 Ω/10 °C
Data update period 1 second or less 1 second or less
Burn-out All channels can be set together. Setting : Not available/available (UP/DOWN)
Maximum current consumption 150 mA (5 V DC), 80 mA (24 V DC) 150 mA (5 V DC), 60 mA (24 V DC)
Weight Approx. 0.30 kg Approx. 0.30 kg
External connection Pressure clamp terminal (ATST4) Pressure clamp terminal (ATSR3)
Barrier type Isolated interface Isolated interface
*1: In order to satisfy the EMC requirements in accordance with the IEC 61000. use the shielded cable. (Shielded multi-core
cable with one shield for all channel is sufficient.)
*2: Use a non-ground type thermocouple (TC) because AST143 is an isolated type module. By connecting a groun
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