Rockwell Automation T8850 Trusted Analogue or Digital Output FTA - Manual (Page 7)

Trusted
TM
Analogue or Digital Output FTA T8850
Issue 10 Apr 12 PD-T8850 7
1. Description
The Trusted TM 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. Figure 2 below shows the configuration of two channels within a group.
Figure 2 Two Channel Schematic
Indication of of the presence of the field power supply is provided by a green LED (one for each power
group). The supply is then fed to each channel within the power group.
The signal to the field device is fed directly from the output module.
The cable linking the 40 channels on the output module to the FTA is terminated at the 96-way socket
SK1. SmartSlot (Version 1) signals from the module are connected to SK1. The dc field power
supplies can be connected to the FTA via a 10-way terminal block PWR TB. The output signals to the
field (40-off) are connected by 2-wire arrangements terminated on the dual height terminal blocks.
V_FIELD_GRP1
V_FIELD_RTN_GRP1
F
I
E
L
D
T
E
R
M
I
N
A
L
S
V_FIELD_RTN_GRP1 ( SK1 AND 2 )
V_FIELD_GRP1
PWR
TERMINALS
CHAN _1_V_FIELD_GRP1
CHAN _1_V_FIELD_RTN_GRP1
CHAN _2_V_FIELD_GRP1
CHAN _2_V_FIELD_RTN_GRP1
CONNECTIONS TO
OUTPUT MODULE
CONNECTIONS
FROM
OUTPUT
MODULE
TO
THE
FIELD