The Trusted ® 40-channel Analog Input Field Terminal Assembly (FTA) T8830 is designed to function as the primary interface between field devices that generate analog signals and the Trusted TMR Analog input module T8431.
Features:
• 40 input channels per FTA.
• Industry standard field equipment connection (2 wires).
• Standard DIN rail compatibility.
• Easy installation and connection.
•24 Vdc running.
•SmartSlot connection for one-to-many hot swap input modules.
• Weld field power supply for each channel.
• On-board light emitting diode (LED) displays field power integrity.
Trusted 40-channel analog inputs The FTA T8830 offers maximum termination of 40 input channels from various types of field devices that generate analog inputs. Figure 2 below shows the configuration of the individual channels. The supply in this area is derived from dual 24-volt DC feeds, which are "common" through the diode regarding the Free Trade Agreement. A green LED indicates the presence of power. The supply is then fed to each channel.
A power supply voltage is provided to the magnetic field through a 50 mA fuse. This effectively limits the current magnetic field loop. The voltage develops across 250 Ω resistors due to the incoming analog signal from the field device being fed directly to the analog input module. The cable connecting the 40 channels on the input module to the FTA terminates at the 96-way socket SK1. SmartSlot(Version 1) signals are connected from the module to SK1. The SmartSlot connector is SK2, which is also a 96-way socket. This connector is not intended for use by SmartSlot Version 2 in trusted systems. Dual DC field power supply
