Analog Safety Demand (Asd) Configuration; Discrete Safety Demand (Dsd) Configuration - GE Masoneilan SVI II ESD Installation And Maintenance Manual

Analog Safety Demand (ASD)
The Analog Safety Demand configuration is: 4 - 20 mA signal, power and trip signal with
superimposed HART
Control System
2 Wire Solution - Safety Function Triggered by Current Sensing (5.6mA = Safety Trip)
Discrete Safety Demand (DSD)
The Discrete Safety Demand configuration is: 24 VDC, power and trip signal with
superimposed HART
Control System
Safety System
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®
communications (Figure 51).
AO
or
4 - 20 mA + HART
Safety System
Figure 51 Analog Safety Demand (ASD) Configuration
®
communications (Figure 53).
High Impedance
Device Required
for HART Signaling
DO
or
24 VDC + HART
Safety Function Triggered by Discrete 0 - 24 VDC Signal (3 VDC = Safety Trip)
Figure 52 Discrete Safety Demand (DSD) Configuration
SVI II ESD
.
SVI II ESD
Masoneilan SVI II ESD Installation and Maintenance Manual
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