Field power inputs, Table 2 - field power input connections, Trusted – Rockwell Automation T8846 Trusted Speed Monitor IFTA (SIFTA) User Manual
Page 11: Speed monitor ifta t8846
Trusted
TM
Speed Monitor IFTA T8846
Issue 2 Apr 10
PD-T8846
11
3.1. Field Power Inputs
This section details the field power input connections for each speed monitor input group.
There are three 4 way connectors on the FTA which provide the field power interface to the FTA. Each
connector is dedicated to one speed input group.
Refer to Figure 3 for the location of the interface sockets
Table 2 - Field Power Input Connections
Interface Pin Signal Name
Description
SK1
A1
Group 1 Vfield A Input
+24Vdc (A) Dual redundant power supply input for group 1 speed
inputs.
SK1
A2
Group 1 Vfield Return
Input
SK1
A3
Group 1 Vfield Return
Input
0V Vfield Power supply return for group 1 speed inputs.
SK1
B1
Group 1 Vfield B Input
+24Vdc (B) Dual redundant power supply input for group 1 speed
inputs.
SK3
A1
Group 2 Vfield A Input
+24Vdc (A) Dual redundant power supply input for group 2 speed
inputs.
SK3
A2
Group 2 Vfield Return
Input
SK3
A3
Group 2 Vfield Return
Input
0V Vfield Power supply return for group 2 speed inputs.
SK3
B1
Group 2 Vfield B Input
+24Vdc (B) Dual redundant power supply input for group 2 speed
inputs.
SK5
A1
Group 3 Vfield A Input
+24Vdc (A) Dual redundant power supply input for group 3 speed
inputs.
SK5
A2
Group 3 Vfield Return
Input
SK5
A3
Group 3 Vfield Return
Input
0V Vfield Power supply return for group 3 speed inputs.
SK5
B1
Group 3 Vfield B Input
+24Vdc (B) Dual redundant power supply input for group 3 speed
inputs.