GE L90 Instruction Manual page 3

Addendum
This addendum contains information that relates to the L90 Line Current Differential System, version 5.7x. This adden-
dum lists a number of information items that appear in the instruction manual GEK-113527 (revision U1) but are not
included in the current L90 operations.
The following functions and items are not yet available with the current version of the L90 relay:
• Signal sources SRC 5 and SRC 6.
Version 4.0x and higher releases of the L90 relay includes new hardware (CPU and CT/VT modules).
• The new CPU modules are specified with the following order codes: 9E, 9G, 9H, 9J, 9K, 9L, 9M, 9N, 9P, 9R, and 9S.
• The new CT/VT modules are specified with the following order codes: 8F, 8H 8L, 8N.
The following table maps the relationship between the old CPU and CT/VT modules to the newer versions:
MODULE OLD
CPU 9A
9C
9D
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CT/VT 8A
8C
--
--
The new CT/VT modules can only be used with the new CPUs (9E, 9G, 9H, 9J, 9K, 9L, 9M, 9N, 9P, 9R, and 9S), and
the old CT/VT modules can only be used with the old CPU modules (9A, 9C, 9D). To prevent any hardware mis-
matches, the new CPU and CT/VT modules have blue labels and a warning sticker stating "Attn.: Ensure CPU and
DSP module label colors are the same!". In the event that there is a mismatch between the CPU and CT/VT module,
the relay will not function and a
All other input/output modules are compatible with the new hardware.
With respect to the firmware, firmware versions 4.0x and higher are only compatible with the new CPU and CT/VT mod-
ules. Previous versions of the firmware (3.4x and earlier) are only compatible with the older CPU and CT/VT modules.
ADDENDUM
NEW DESCRIPTION
9E RS485 and RS485 (Modbus RTU, DNP)
9G RS485 and 10Base-F (Ethernet, Modbus TCP/IP, DNP)
9H RS485 and redundant 10Base-F (Ethernet, Modbus TCP/IP, DNP)
9J RS485 and multi-mode ST 100Base-FX
9K RS485 and multi-mode ST redundant 100Base-FX
9L RS485 and single mode SC 100Base-FX
9M RS485 and single mode SC redundant 100Base-FX
9N RS485 and 10/100Base-T
9P RS485 and single mode ST 100Base-FX
9R RS485 and single mode ST redundant 100Base-FX
9S RS485 and six-port managed Ethernet switch
8F Standard 4CT/4VT
8H Standard 8CT
8L Standard 4CT/4VT with enhanced diagnostics
8N Standard 8CT with enhanced diagnostics
or
DSP ERROR HARDWARE MISMATCH
GE Industrial Systems
error will be displayed.