SEL-701-1 Monitor
Date Code 20011009
Maintenance & Troubleshooting
Self-Testing
9.4
+28 V PS
Measures the
+28 V power
supply.
+24.00 V
Yes
Latched
+28V FAILURE
TEMP
Measures the
temperature at
the A/D voltage
reference.
-50ºC+100ºC
Yes
Latched
TEMPERATUR
E FAILURE
RAM
Performs a
read/write test on
system RAM.
Yes
Latched
RAM FAILURE
ROM
Performs a
checksum test on
the monitor
program
memory.
Checksum
Yes
Latched
ROM FAILURE
CR_RAM
Performs a
checksum test on
the active copy
of the monitor
settings.
Checksum
Yes
Latched
CR_RAM
FAILURE
EEPROM
Performs a
checksum test on
the nonvolatile
copy of the
monitor settings.
Checksum
Yes
Latched
EEPROM
FAILURE
Microprocessor
Crystal
Monitors the
microprocessor
crystal.
Yes
Latched
CLOCK
STOPPED
Microprocessor The
microprocessor
examines each
program
instruction,
memory access,
and interrupt.
Test fails on
detection of an
invalid
instruction,
memory
access, or
spurious
interrupt.
Yes
Latched
VECTOR nn
Clock Battery
Measures the
real-time clock
battery voltage.
Battery
Voltage
<2.50 V
No
Pulsed
Real-Time
Clock
Verifies the real-
time clock chip
communication,
time-keeping,
and memory
functions.
No
Pulsed
Learned Cool
Time
Verifies the
monitor's ability
to learn the
motor cooling
time.
Unable to
write data to
target address
No
Pulsed
Learned
Thermal
Capacity to
Start
Verifies the
monitor's ability
to learn the
motor thermal
capacity to start.
Unable to
write data to
target address
No
Pulsed
Table 9.2
Monitor Self-Tests
(Sheet 2 of 2)
Self-Test
Description
Limits
Protection
Disabled on
Failure
ALARM
Output on
Failure
Front-Panel
Message on
Failure
Содержание SEL-701-1
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