User's Manual

17
Date Code 20170317 Instruction Manual SEL-FT50/SEL-FR12 Fault Transmitter and Receiver System
System Installation
The TMB1–TMB6 entries in Table 6 and Table 7 indicate the required TMB
states to select the Default Set or Command Set 2 or 3. Any other bit
combinations force the SEL-FR12 to return all zeros and cause it to ignore
TMB7 and TMB8 commands.
The Trio 1 LINK, Trio 2 LINK, Trio 3 LINK, and Trip 4 LINK bit logic
ignores SEL-FT50 Fault Transmitters that have not been installed or detected.
For example, if SEL-FT50 Fault Transmitters with Unit IDs 4 and 5 are
installed, but there is no Unit ID 6, LINK 6 never asserts. The equation for the
Trio 2 LINK is reduced to LINK 4 AND LINK 5.
Table 5 Definition of FAULT and LINK Bits
Bit Label Definition
LINK u u = Unit ID 1–12
SEL-FR12 is receiving messages from SEL-FT50 Fault Transmitters.
Asserts whenever SEL-FR12 LINK LED u is solidly illuminated.
Trio 1 LINK Logical AND of the link status from the installed SEL-FT50 Fault
Transmitters with Unit IDs 1, 2, and 3
Trio 2 LINK Logical AND of the link status from the installed SEL-FT50 Fault
Transmitters with Unit IDs 4, 5, and 6
Trio 3 LINK Logical AND of the link status from the installed SEL-FT50 Fault
Transmitters with Unit IDs 7, 8, and 9
Trio 4 LINK Logical AND of the link status from the installed SEL-FT50 Fault
Transmitters with Unit IDs 10, 11, and 12
FAULT u u = Unit ID 1–12
Asserts for 116 ms when the SEL-FR12 receives a fault message from
the SEL-FT50 and deasserts thereafter; this bit is not latched (this dif-
fers from the SEL-FR12 FAULT LEDs, which are latched until reset).
Trio 1 FAULT Logical OR of the fault state from Unit IDs 1, 2, and 3
Trio 2 FAULT Logical OR of the fault state from Unit IDs 4, 5, and 6
Trio 3 FAULT Logical OR of the fault state from Unit IDs 7, 8, and 9
Trio 4 FAULT Logical OR of the fault state from Unit IDs 10, 11, and 12
Table 6 Detailed Command Set 2—SEL-FR12 MIRRORED BITS Data Message Contents
Required SEL-651R Transmit MIRRORED BITS (SELOGIC Equations) for Detailed Command Set (2)
TMB1 TMB2 TMB3 TMB4 TMB5 TMB6 TMB7 TMB8
0 0 1 0 0 0 Clear link
state in
SEL-FR12
Target reset
on SEL-FR12
HMI
SEL-651R Received MIRRORED BITS (Relay Word bits)
RMB1 RMB2 RMB3 RMB4 RMB5 RMB6 RMB7 RMB8
Response During Normal Conditions (No Fault on Trio 1 or Trio 2)
Trio 1
FAULT = 0
Trio 2
FAULT = 0
LINK 1 LINK 2 LINK 3 LINK 4 LINK 5 LINK 6
Response During FAULT Indication (One or Both Trio 1 FAULT, Trio 2 FAULT Asserted)
Trio 1 FAULT Trio 2 FAULT FAULT 1 FAULT 2 FAULT 3 FAULT 4 FAULT 5 FAULT 6