Date _______________
Date Code 20060320 Instruction Manual SEL-311C Relay
SET.5 of 6SEL-311C Settings Sheet Application Setting 221H
Other Port Settings (See Below)
Time-out (0–30 minutes) T_OUT =
DTA Meter Format (Y, N)
DTA =
Send auto messages to port (Y, N)
AUTO =
Enable hardware handshaking (Y, N, MBT)
(MBT is available when PROTO = MBA or MBB.)
RTSCTS =
Fast Operate Enable (Y, N)
FASTO P =
OTHER PORT SETTINGS Set T_OUT to the number of minutes of serial port inactivity for an automatic
log out. Set T_OUT = 0 for no port time-out. This setting is available when PROTO = SEL or LMD.
Set DTA = Y to allow an SEL-DTA or SEL-DTA2 to communicate with the relay. This setting is
available when PROTO = SEL or LMD.
Set AUTO = Y to allow automatic messages at the serial port. This setting is available when
PROTO = SEL or LMD.
Set RTSCTS = Y to enable hardware handshaking. With RTSCTS = Y, the relay will not send
characters until the CTS input is asserted. Also, if the relay is unable to receive characters, it
deasserts the RTS line. Setting RTSCTS is not applicable to serial Port 1 (EIA-485) or a port
configured for SEL Distributed Port Switch Protocol.
Set FASTOP = Y to enable binary Fast Operate messages at the serial port. Set FASTOP = N to block
binary Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate
Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is
available when PROTO = SEL or LMD.
Power System Configuration (See Settings Explanations on page 9.33)
Phase rotation (ABC, ACB) PHROT =
Nominal Frequency (50 Hz, 60 Hz)
NFREQ =
Display Point Labels (See Rotating Default Display (Only on Models With LCD) on
page 7.36 and Rotating Default Display on page 11.12)
NOTE: This application assumes that the user has programmed the text settings as indicated below.
If the text settings listed below are not programmed as indicated, the front-panel display points will
not display the correct information for these display points.
Display if DP1 = logical 1 (16 characters)
DP1_1 = BREAKER CLOSED
Display if DP1 = logical 0 (16 characters)
DP1_0 = BREAKER OPEN
Event Report Parameters (See Section 12: Standard Event Reports and SER)
Length of event report (15, 30, 60, 180 cycles) LER =
Length of pre-fault in event report
(1–14 cycles in 1-cycle steps for LER = 15)
(1–29 cycles in 1-cycle steps for LER = 30)
(1–59 cycles in 1-cycle steps for LER = 60)
(1–179 cycles in 1-cycle steps for LER = 180)
PRE =
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