SDV531-LE3 is a digital output module with 8 channels, module isolation and long-distance transmission characteristics within the Yokogawa I/O architecture.
8-Channel Digital Output Module · Module Isolation · Long-Distance Type
CHANNELS
8
OUTPUT
24 V DC
ISOLATION
MODULE
AMBIENT
-20 to 70°C
◈
SAFETY OUTPUT CONTROL
Designed for the modular architecture of Yokogawa ProSafe-RS.
01 / PRODUCT PROFILE
SDV531-LE3 in the ProSafe-RS I/O Architecture
YOKOGAWA SDV531-LE3 is a digital output module for the ProSafe-RS safety system. The SDV531 family provides eight digital output channels with module isolation, while the LE3 variant is designated as the long-distance type. The module is intended for controlled digital output functions within a modular safety control architecture.
Functional Role
The module provides discrete output capability for ProSafe-RS applications. Its eight-channel structure allows multiple discrete output points to be handled through one compact I/O module position.
ARCHITECTURE
Dual-processor I/O design
ProSafe-RS I/O modules use dual microprocessor architecture and internal comparison mechanisms to support the system's functional-safety design.
Product Type
Digital Output Module
Model
SDV531-LE3
Output Channels
8 channels
Output Family
24 V DC digital output
Isolation
Module isolation
Module Type
Long-distance type
Temperature Range
-20 to 70°C
◎
8 Channels
Discrete output points
◇
24 V DC
Digital output family
◌
Isolated
Module isolation
↗
Long Distance
LE3 configuration
◍
-20 to 70°C
Ambient range
01
Discrete Safety Outputs
Eight output channels are arranged for discrete control functions within a safety instrumented system architecture.
02
Module-Level Isolation
Module isolation is part of the SDV531 output-module design and separates the module interface from other module-level signal domains.
03
Long-Distance Variant
The LE3 designation distinguishes the long-distance version from standard SDV531 configurations, making the model selection relevant when the installation requires the corresponding long-distance I/O arrangement.
02 / SYSTEM RELATIONSHIP
Where SDV531-LE3 Fits
SDV531-LE3 belongs to the ProSafe-RS digital output family. The differences between nearby module families are mainly channel count and module configuration, while the LE3 designation specifically represents the long-distance SDV531 variant.
Module Family
Primary Function
Channel Structure
Relationship to SDV531-LE3
SDV531-LE3
Digital output
8 channels
Long-distance type
SDV531-SE3
Digital output
8 channels
Standard SDV531 configuration
SDV541-SE3
Digital output
16 channels
Higher channel density
SDV144
Digital input
16 channels
Input-side family rather than output-side family
⇄
ProSafe-RS System Context
ProSafe-RS combines Safety Control Stations, engineering functions and Vnet/IP-based control networking. It can also integrate with CENTUM VP and communicate with other DCS or PLC environments through supported subsystem communication.
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Please contact us within 7 days after receipt if there is any issue. Returned items must remain in original condition and include the specific reason for return. After the returned item is received, a return or replacement can be arranged according to the case. The buyer is responsible for shipping costs related to the return.
04 / BUYER QUESTIONS
SDV531-LE3 Purchase & Application FAQ
Q1 · Can SDV531-LE3 replace an SDV531-SE3 directly when the field connection is longer?
Not simply on the basis of channel count. Both are eight-channel SDV531 digital output modules with module isolation, but SDV531-LE3 is the long-distance type. The required module and field-side arrangement should therefore match the actual ProSafe-RS installation.
Q2 · Is SDV531-LE3 the right choice when eight digital outputs are required but higher channel density is preferred?
SDV531-LE3 provides eight channels. If the design requires more output points per module, the SDV541 family provides 16 digital output channels. Channel density and the required module architecture should be checked together before substitution.
Q3 · Does SDV531-LE3 belong to the ProSafe-RS safety I/O architecture rather than a general-purpose PLC I/O family?
Yes. SDV531-LE3 is part of the ProSafe-RS I/O family. ProSafe-RS is Yokogawa's safety instrumented system platform designed around IEC 61508 functional-safety requirements.
Q4 · What should be checked before purchasing SDV531-LE3 for an existing ProSafe-RS installation?
Confirm the installed ProSafe-RS architecture, required digital output channel count, long-distance configuration, field-side connection arrangement, redundancy requirements, and the exact suffix or option combination required by the installation.
Q5 · Does SDV531-LE3 support the same basic eight-channel output role when a redundant ProSafe-RS arrangement is required?
SDV531-LE3 is an eight-channel digital output module within the ProSafe-RS architecture. ProSafe-RS supports modular redundancy, allowing redundancy to be applied at the I/O or processor level when the system design requires higher availability. The exact redundant arrangement must match the configured system architecture.
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