Description 

The Trusted 40 Channel Analogue Output or Digital Output FTA T8850 provides termination 

for a maximum of 40 output field loops. The 40 channels are arranged in five groups each 

comprising eight identical channels.  

Indication of the presence of the field power supply is provided by a green LED (one for each 

power group). 

The signal to the field device is routed through the FTA from the output module. 

The cable linking the 40 channels on the output module to the FTA is terminated at the 96

way socket JDH2. SmartSlot (Version 1) signals from the module are also connected to JDH1. 

The dc field power supplies can be connected to the FTA via a 10-way terminal block P1. The 

output signals to the field (40-off) are connected by 2-wire arrangements terminated on the 

dual height terminal blocks TB2.

Installation 

Trusted 40 Channel Analogue Output or Digital Output FTA T8850 is designed to be 

mounted on either of the TS32 or TS35 DIN rails in the horizontal or vertical positions as 

required.