User's Manual

18
SEL-FT50/SEL-FR12 Fault Transmitter and Receiver System Instruction Manual Date Code 20170317
System Installation
Access 12 Individual LINK and FAULT Bits
Command Set 2 provides the individual status of Unit IDs 1–6 and Command
Set 3 provides it for Unit IDs 7–12. However, there is no command set that
provides all 12 individual status points at one time.
For applications that require more than six individual LINK u or FAULT u
bits, set the SEL-651R to alternately request Command Set 2 and Command
Set 3. Achieve this by operating TMB4 from a SEL
OGIC timer, changing state
automatically (refer to the top sections of Table 6 and Table 7). Configure
further SELOGIC to qualify and decode the RMB data, and store the result in
the appropriate SELOGIC variables for use in control functions or for system
logging in the Sequential Events Recorder.
Temporarily Disable SEL-FR12 MIRRORED BITS Responses
For commissioning purposes, it may be necessary to disable the MIRRORED
BITS data that the SEL-FR12 is transmitting. In the SEL-651R, set TMB1–
TMB8 = 0, with the exception of setting TMB4 = 1. This has no effect on the
SEL-FR12 front-panel LED operation.
SEL-FT50
Settings and Configuration
The SEL-FT50 uses two internal eight-position switch banks to configure the
Unit ID, the Network ID, and the Fault Pickup current level.
To begin, open the SEL-FT50 by twisting the bottom counter-clockwise. On
the inside of the device, you will see the two banks of switches. The switch
positions are labeled 1 through 8 on each of the two switch banks. The switch
selections are outlined on a label on the interior of the device, as shown in
Figure 15.
Table 7 Detailed Command Set 3—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 1 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 3 or Trio 4)
Trio 3
FAULT = 0
Trio 4
FAULT = 0
LINK 7 LINK 8 LINK 9 LINK 10 LINK 11 LINK 12
Response During FAULT Indication (One or Both Trio 3 FAULT, Trio 4 FAULT Asserted)
Trio 3 FAULT Trio 4 FAULT FAULT 7 FAULT 8 FAULT 9 FAULT 10 FAULT 11 FAULT 12