ABB REL300 Instruction Manual page 103

I.L. 40-385.7
4.5.4 Test Mode (Self-Check Routine)
The software of the REL300 relay contains several self-check routines (see Section 1.6, page
1-6). When the "Test" mode is selected by the "Display Select" pushbutton, the failure modes
(represented by their corresponding bits) are shown in the VALUE field, as follows:
• Bit 0 External RAM Failure
• Bit 1 EEPROM Warning
• Bit 2 ROM Failure
• Bit 3 EEPROM Failure (NON-Volatile memory)
• Bit 4 Analog Input Circuit Failure
• Bit 5 Microprocessor Failure
• Bit 6 Setting Discrepancy
Data types are as follows:
• bit
• byte = 8 bits
• word = 16 bits
• longword = 32 bits
All bits are expressed in HEX byte form. For example, if the display shows "Test 1B", whose
binary representation is 00011011, this means that the relay failed the self-check in the area of
External RAM (bit 0), EEPROM (one-out-of-three failure, bit 1), (two-out-of-three failure, bit 3)
and Analog Input Circuit (bit 4). Normally, the test mode should show "Test 0", meaning that
the relay has passed the self-check routines.
Bit 6 is for the setting discrepancy detection. If the ordering information calls for single-pole trip
option and the jumper #2 on the Microprocessor module is on position "1-2" which is for the
Programmable output contacts, the REL300 will give the error of "TEST 40".
When the selector is in TEST mode, scroll the function field by the Raise pushbutton. The Value
field display shows RS1 (Carrier Receiver #1), RS2 (Carrier Receiver #2), RS1, 2 (Carrier Re-
ceiver #1 and #2), and "TK" (Carrier Send) for the use of REL300 functional test. Refer to the
Non-Pilot Performance Tests (Section 1.1.1, page A-1) for more detailed information. If jumper
(JP5) on the microprocessor module is IN, the following ten functions will be shown:
• TRIP
• BFI
• RI1
• RI2
• RB
All of these contact outputs can be tested by pressing the "ENTER" pushbutton. Section
1.1.1.13, page A-16).
4-6
!
CAUTION
• AL1
• AL2
• GS
• SEND
• STOP