SAI-1620M Honeywell

Description

Honeywell SAI-1620M Safe Analog Input Module

Product Dimensions：

Field termination assembly module TSAI-1620m is the interface between field
components (such as sensors) and the safe high-density analog input module
SAI-1620m in Safety Manager. It can be used for interfacing signals from Class I,
Division 2 Hazardous Locations.
The TSAI-1620m module has sixteen analog input channels, which may be used
for both safety-related and non-safety-related applications. These sixteen
channels (separated into two groups of eight channels with common 0 V) are
connected via a system interconnection cable (SICC-0001/Lx), which is plugged
into the SIC connector on the FTA module.
The FTA module has a universal snap-in provision for standard DIN EN rails, and
screw terminals for connection of power supply, ground and field wiring.
Main functions
TSAI-1620m module has three main functions:
• Linear direct conversion of 0(4)—20 mA DC field signals to the signal levels
of the safe high-density analog input module SAI-1620m
• Power supply distribution to each transmitter with voltage-current limitation
in compliance with Hazardous Area Class I Division 2
• Enabling monitoring of the external power connected to the FTA module
Linear direct conversion
The input circuit of each channel consists of a high-precision resistor, which
converts the input current (0—20 mA) to the input voltage for the high-density
analog input module SAI-1620m. Power is supplied to the analog transmitter via
a series resistor. Each analog signal has its own terminal for the field cable shield.
Figure 322 on page 536 shows the schematic diagram for connecting a transmitter
(active and passive).

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