Troubleshooting
EN
Carlo Gavazzi
RSBT Troubleshooting Guide
–
Rev 1.0
2
LED Status Indications
State
Supply
(green LED)
Alarm
(red LED)
Idle
ON
OFF
Ramping
ON
OFF
Bypass
ON
OFF
Alarm
ON
Flashing
Relay status indication
State
Supply
(green LED)
Relay contact position
RSBT 45mm
(V21..)
RSBT 120 mm
(CV0, CVC)
Alarm
(11, 12, 14)
Alarm
(11, 12, 14)
Bypass
(21, 22, 24)
Idle
ON
11, 14
11, 12
21, 22
Ramping
ON
11, 14
11, 12
21, 22
Bypass
ON
11, 14
11, 12
21, 24
Alarm
ON
11, 12
11, 14
21, 22
Alarms
The RSBT includes a number of diagnostics and protection features each of which is signalled through a flashing
sequence on the red LED. After each flashing cycle, there is a delay (OFF time) on the red LED of 1.5 sec before
the next cycle starts. During the alarm recovery period, the red LED will flash at twice the frequency to indicate that
the RSBT is in recovery mode.