Schweitzer Engineering Laboratories SEL-251 - SET G P

Date Code 970103 Communications 3-27
SEL-251, -2, -3 Instruction Manual
The following settings V(56) through Z(56) can be set to equal any AND-combination of Relay
Word bits A through !L, which are in Relay Word row R5 and the first three bits of row R6.
V(56) = B*E*F ?
W(56) = C*E*F ?
X(56) = ?
Y(56) = ?
Z(56) = ? Input into timer TZ (TZ output is Relay Word bit ZT)
The following settings A3(1346) through SEQ(1) can be set to equal any OR-combination of
elements in the Relay Word rows indicated in parentheses.
A3(1346) = 79CY ? A3 output contact setting
A4(2346) = ? A4 output contact setting*
TR(1246) = 50H+51T+51NT+V ? Programmable tripping conditions
RC(1246) = 50H+TF ? Programmable reclose cancel conditions
ER(1246) = TF+W+51NP+51QP+51P ? Programmable event report trigger conditions
SEQ(1) = ? Sequence coordination overcurrent pickup(s)
* The A4 output contact can function as an extra ALARM output contact, depending on
the placement of jumper JMP3 (revision A main boards only). With jumper JMP3 in the
A4 position, the A4 output contact operates per setting A4(2346). With jumper JMP3 in
the ALARM position, the A4 output contact operates with the ALARM output contact.
Note: SELOGIC Control Equations cannot exceed 90 characters per equation (including + or *
characters). Exceeding this limit may overflow the relay input buffer and cause it to
XOFF the terminal from which you are entering settings (see Communications Protocol
in this section).
The following settings specify overcurrent elements in Relay Word row R1 to be torque
controlled (e.g., ETC(1) = 51P, 50NL).
ETC(1) = ? Externally torque controlled elements
ITC(1) = ? Internally torque controlled phase overcurrent elements (choose from
51P, 50L, and 50H only)
Refer to the Functional Specifications in Section 2: Specifications and be sure the group
settings you choose result in relay performance appropriate to your application.
SET G p
SET G allows entry of global settings which are used with all setting groups. At the setting
procedure prompts, enter new data or press <ENTER> for no change. You can jump to a
specific global setting by entering the setting name as parameter p. If you do not specify a
setting, the procedure starts at the first global setting DEMR.
The relay prompts you for each global setting and checks entries against established limits as it
does during group setting entry (see SET n p in this section). For the programmable contact
inputs IN1 to IN6, if no function is desired, type NA <ENTER>. Type END <ENTER> after
the last setting change. The relay displays the new global settings and the active group settings.
Answer Y <ENTER> to enable the new global settings. The relay will pulse the ALARM
output as the new global settings are stored in memory.