ABB RELION REX640 Technical Manual

3.3.2 Warnings
In case of a warning, the protection relay continues to operate except for those
protection functions affected by the fault. The main unit status LED remains lit as
during normal operation. If the device warning event is configured as alarms, the
LHMI Home button flashes red.
If a warning appears, record the name and code so that it can be
provided to ABB customer service. See the operation manual for more
information on reading internal log files from the relay.
On the LHMI, an active warning is indicated with a yellow LED. More information
about the warning and recovery options can be accessed by tapping More
Information.
Figure 29: Active warning on local HMI
More information shows all active warnings and corresponding fault codes. In
addition, a recovery procedure is described.
1MRS759142 F
Basic functions
REX640
Technical Manual
107

ABB RELION REX640 Specifications

General

Model	RELION REX640
Category	Protection Device
Communication Protocols	IEC 61850, Modbus, DNP3, IEC 60870-5-103
Display	LCD
Rated Voltage	100-240 V AC/DC
Rated Frequency	50/60 Hz
Protection Functions	Overcurrent, Earth Fault, Overvoltage, Undervoltage, Frequency
Mounting	Rack mounting
Inputs/Outputs	Analog inputs
Housing	Metal
Input Voltage	24-250 V DC / 100-240 V AC
Operating Temperature	-25°C to +70°C
Enclosure	IP20