Rear Terminal Layout - GE L90 Instruction Manual

3.1 DESCRIPTION
The 4.0x release of the L90 relay includes new hardware modules.The new CPU modules are specified with codes
9E and higher. The new CT/VT modules are specified with the codes 8F and higher.
NOTE
The new CT/VT modules can only be used with new CPUs; similarly, old CT/VT modules can only be used with old
CPUs. In the event that there is a mismatch between the CPU and CT/VT module, the relay will not function and a
or
DSP ERROR
All other input and output modules are compatible with the new hardware. Firmware versions 4.0x and higher are
only compatible with the new hardware modules. Previous versions of the firmware (3.4x and earlier) are only com-
patible with the older hardware modules.
3
X W V
Tx1
Rx1
Tx1
Tx2
Rx2
Tx2
Optional Optional
Ethernet direct
switch input/output
module
Do not touch any rear terminals while the relay is energized!
The relay follows a convention with respect to terminal number assignments which are three characters long assigned in
order by module slot position, row number, and column letter. Two-slot wide modules take their slot designation from the
first slot position (nearest to CPU module) which is indicated by an arrow marker on the terminal block. See the following
figure for an example of rear terminal assignments.
3-8
error will be displayed.
HARDWARE MISMATCH
L90
Line Differential Relay
GE Multilin
Technical Support:
Tel: (905) 294-6222 http://www.GEIndustrial.com/Multilin
Fax: (905) 201-2098
U T S R P N
c b a c b a
Optional Optional
contact contact
input/ input/output
output module
module
Figure 3–10: REAR TERMINAL VIEW
L90 Line Current Differential System
Model: L90D00HCHF8AH6AM6BP8BX7A
RATINGS:
Mods: 000
Control Power: 88-300V DC @ 35W / 77-265V AC @ 35VA
Wiring Diagram: ZZZZZZ
Contact Inputs: 300V DC Max 10mA
Inst. Manual: D
Contact Outputs: Standard Pilot Duty / 250V AC 7.5A
Serial Number: MAZB98000029
360V A Resistive / 125V DC Break
Firmware: D
4A @ L/R = 40mS / 300W Mfg. Date: 1998/01/05
Made in
®
Canada
®
- M A A B 9
M L K J H G
c b a c b a c
Optional Optional CT/VT
CT/VT or contact module
contact input/output
input/output module
module
3 HARDWARE

3.1.3 REAR TERMINAL LAYOUT

7 0 0 0 0 9 9 -
F D B
b a
b a b
1 1
1
2 2
2
3 3
Tx1
3
4 4
4
5
Rx1
CH1
6
Tx
Rx
CH2
7
IN
Tx2
8
OUT
Rx2
CPU module Power
(Ethernet not supply
available when
module
ordered with
Ethernet switch)
831781A4.CDR
GE Multilin
a
1
2
3
4
5
6
7
8