Siemens SIMPRO-100 - Power Supply Fuse Replacement Guide; Real-Time Clock Battery and Firmware; Real-Time Clock Battery Replacement

10
Maintenance & Troubleshooting
SIMPRO-100
128 PRIM-2400C
10.2.2 ALARM Output
The ALARM output contact signals an alarm
condition by going to its deenergized state.
• The ALARM output b-contact closes for an
alarm condition; the ALARM output a-contact
opens for an alarm condition or if the relay is
deenergized.
• The relay generates a STATUS report at the
serial port for failures.
• The relay displays failure messages on the
relay VFD display.
Use the serial port STATUS command or
front-panel Status of Relay function to view the
relay self-test status.
Table 10.1 Relay Self-tests
Self-Test Description Limits
Protection
Disabled on
Failure
ALARM
Output on
Failure
Front-Panel
Message on
Failure
DC Offset Measures the dc offset at each of the input
channels.
160 mV Yes Latched
OFFSET
FAILURE
+5 V PS Measures the +5 V power supply.
+4.65 V
+5.65 V
Yes Lat ched +5V FAILURE
-5 V PS Measures the -5 V power supply.
-4.65 V
-5.40 V
Yes Lat ched -5V FAILURE
+15 V PS Measures the +15 V power supply.
+14.00 V
+16.00 V
Yes Lat ched
+15V
FAILURE
+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 Lat ched
TEMPERATURE
FAILURE
RAM Performs a read/write test on system RAM. Yes Latched RAM FAILURE
ROM Performs a checksum test on the relay
program memory.
Checksum Yes Latched ROM FAILURE
CR_RAM Performs a checksum test on the active
copy of the relay settings.
Checksum Yes Latched
CR_RAM
FAILURE
EEPROM Performs a checksum test on the
nonvolatile copy of the relay settings.
Checksum Yes Latched
EEPROM
FAILURE
Micro-processor
Crystal
Monitors the microprocessor crystal.
Yes Lat ched
CLOCK
STOPPED
Micro-processor The micro-processor examines each
program instruction, memory access, and
interrupt.
Test fails on
detection of an
invalid instruction,
memory access, or
spurious interrupt.
Yes Lat ched 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 relay’s ability to learn the motor
cooling time.
Unable to write data
to target address
No Pulsed
Learned Thermal
Capacity to Start
Verifies the relay’s ability to learn the motor
thermal capacity to start.
Unable to write data
to target address
No Pulsed