Schweitzer Engineering Laboratories SEL-421-4 - Page 1114

10.18
SEL-400 Series Relays Instruction Manual Date Code 20171006
Testing, Troubleshooting, and Maintenance
Relay Troubleshooting
Definitions for the items and fields in the Compressed ASCII configuration are
listed below:
➤ yyyy is the checksum
➤ x is text in the FID (Firmware ID) string
➤ (description) is text that the relay supplies
➤ (Ok or W or F) is normal, warning, or failure, respectively
Firmware Version Number
At the top of each status report the relay displays the present firmware version
number that identifies the software program that controls relay functions. The
firmware version is the four-place designator immediately following the relay
model number (the first characters in the firmware identification or FID string).
The first character in the four-place firmware version number is R (representing
Release).
Figure 10.8 and Figure 10.9 show the location of the FID sting, with a blank or
generic response. To see the actual FID string for the firmware version described
in this manual, see Appendix A: Firmware, ICD File, and Manual Versions in the
product-specific instruction manual for firmware version information.
Relay Troubleshooting
Inspection Procedure
Complete the following inspection procedure before disturbing the system. After
you finish the inspection, proceed to Troubleshooting Procedures on page 10.19.
Step 1. Confirm that the power is on. Do not turn the relay off.
Step 2. Measure and record the control power voltage at the relay POWER ter-
minals marked + and – on the rear-panel terminal strip.
Step 3. Measure and record the voltages at all control inputs.
Step 4. Measure and record the state of all control outputs.
Step 5. Inspect the serial communications ports cabling to be sure that a
communications device is connected to at least one communications
port.
"RID","SID","FID","yyyy",
"relay_name","station_name","SEL-451-x-Rxx-Vx-Zxxxxxx-Dxxxxxxxx","yyyy"
"MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"
(Month),(Day),(Year),(Hour),(Min),(Sec),(MSec),"yyyy"
"CPU_RAM","CPU_PROG","SELBOOT","CPU_SET","DSP_RAM","DSP","DSP_CSUM","DSP_T_OUT","CPUDSP_RAM","FRNT_PNL","CAL_BOARDA","CCRD_
CHG","COMM_CARD","ANA_CONV","IO_1","IO_2","yyyy"
"(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or
F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","yyyy"
"ATOD_OFFST","MSTR_OFFST","3.3V_PS","5V_PS","N5V_PS","15V_PS","N15V_PS","TEMP_STA","TEMP","PRT_O_LOAD","LCD_ERROR","FPGA","
yyyy"
"(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)","(Ok or F)",(Temp value),"(Ok or
F)","(Ok or F)","(Ok or F)","yyyy"
"MBA","MBB","ACTTIM_SRC","SELOG_MATH","FM_TEST","DB_TEST","DB2_TEST","RLY_STA","PRT_F_TP","PRT_1_TP","PRT_2_TP","PRT_3_TP",
"PRT_5_TP","yyyy"
(Inac or Ok or F),(Inac or Ok or F),(HIRIG or IRIG or " "),(Enabled or Disabled), (Enabled or Disabled), (Enabled or
Disabled), (Enabled or Disabled),(F,0-5), (F,0-5), (F,0-5), (F,0-5), (F,0-5),"yyyy"
Figure 10.10 Example Compressed ASCII Status Message