Communications - GE L90 Instruction Manual

2 PRODUCT DESCRIPTION
CONTROL POWER EXTERNAL OUTPUT
(FOR DRY CONTACT INPUT)
Capacity: 100 mA DC at 48 V DC
Isolation: ±300 Vpk
REMOTE OUTPUTS (IEC 61850 GSSE)
Standard output points: 32
User output points: 32
RS232
Front port: 19.2 kbps, Modbus
RS485
1 or 2 rear ports: Up to 115 kbps, Modbus
together at 36 Vpk
Typical distance: 1200 m
Isolation: 2 kV
GE Multilin
DCMA OUTPUTS
Range:
Max. load resistance:
Accuracy:
99% Settling time to a step change: 100 ms
Isolation:
Driving signal:
Upper and lower limit for the driving signal: –90 to 90 pu in steps of
ETHERNET PORT
®
RTU 10Base-F:
®
RTU, isolated
Redundant 10Base-F:
10Base-T:
Power budget:
Max optical input power: –7.6 dBm
Max optical output power: –20 dBm
Receiver sensitivity:
Typical distance:
SNTP clock synchronization error: <10 ms (typical)
L90 Line Differential Relay
2.4 SPECIFICATIONS
–1 to 1 mA, 0 to 1 mA, 4 to 20 mA
12 kΩ for –1 to 1 mA range
12 kΩ for 0 to 1 mA range
600 Ω for 4 to 20 mA range
±0.75% of full-scale for 0 to 1 mA range
±0.5% of full-scale for –1 to 1 mA range
±0.75% of full-scale for 0 to 20 mA range
1.5 kV
any FlexAnalog quantity
0.001

2.4.8 COMMUNICATIONS

820 nm, multi-mode, supports half-
duplex/full-duplex fiber optic with ST
connector
820 nm, multi-mode, half-duplex/full-
duplex fiber optic with ST connector
RJ45 connector
10 db
–30 dBm
1.65 km
2
2-19