Schweitzer Engineering Laboratories SEL-749M - Page 291

G.5
Date Code 20080918 Instruction Manual SEL-749M Relay
Relay Word Bits
Definitions
IN402 Contact input ( IN401–IN403 available with 3 DI/4 DO/1 AO card in Slot D) 9
IN403 Contact input ( IN401–IN403 available with 3 DI/4 DO/1 AO card in Slot D) 9
IRIGOK IRIG-B input OK 8
JAMALRM Load-Jam Alarm/Warning (see Figure 4.5)5
JAMTRIP Load-Jam Trip (see Figure 4.5)1
LOADLOW Asserts when the selected load parameter drops below a lower level setting (see Table 4.27)7
LOADUP Asserts when the selected load parameter exceeds an upper level setting (see Table 4.27)7
LOP Loss-of-Potential logic asserted 25
LOSSALRM Load-Loss Alarm/Warning. Assert when the relay detects a load-loss as defined by that function
and corresponding settings (see Figure 4.16).
5
LOSSTRIP Load-Loss Trip. Assert when the relay detects a load-loss as defined by that function and corre-
sponding settings (see Figure 4.6).
1
LT01 Latch Bit 01 asserted (see Figure 4.28)23
LT02 Latch Bit 02 asserted (see Figure 4.28)23
LT03 Latch Bit 03 asserted (see Figure 4.28)23
LT04 Latch Bit 04 asserted (see Figure 4.28)23
LT05 Latch Bit 05 asserted (see Figure 4.28)23
LT06 Latch Bit 06 asserted (see Figure 4.28)23
LT07 Latch Bit 07 asserted (see Figure 4.28)23
LT08 Latch Bit 08 asserted (see Figure 4.28)23
NOSLO Motor Lockout Conditions. Starts per hour function (NOSLO) 12
OTHALRM Other Temperature Alarm. Asserts when any healthy Other RTD temperature exceeds the alarm/
warning set point for that temperature.
6
OTHTRIP Other Temperature Trip. Asserts when one (or more) healthy Other RTD temperature exceeds the
trip set points.
3
OUT101 Control equation for contact outputs (Slot A) 10
OUT102 Control equation for contact outputs (Slot A) 10
OUT103 Control equation for contact outputs (Slot A) 10
OUT401 Control equation for contact outputs (OUT401–OUT404 available with 3 DI/4 DO/1 AO card in
Slot D)
10
OUT402 Control equation for contact outputs (OUT401–OUT404 available with 3 DI/4 DO/1 AO card in
Slot D)
10
OUT403 Control equation for contact outputs (OUT401–OUT404 available with 3 DI/4 DO/1 AO card in
Slot D)
10
OUT404 Control equation for contact outputs (OUT401–OUT404 available with 3 DI/4 DO/1 AO card in
Slot D)
10
PROTBL Asserts for a specified time when protected motor starts. Indicates inhibit of some protection
(see Table 4.13).
13
PTCFLT Indicates faulted/shorted thermistor 3
PTCTRIP Asserts when measured PTC loop resistance is greater than trip value 1
RB1 Remote Bit 1 asserted (see Figure 4.27)17
RB2 Remote Bit 2 asserted (see Figure 4.27)17
RB3 Remote Bit 3 asserted (see Figure 4.27)17
RB4 Remote Bit 4 asserted (see Figure 4.27)17
Table G.2 Relay Word Bit Definitions for the SEL-749M (Sheet 4 of 7)
Bit Definition Row
Courtesy of NationalSwitchgear.com