Troubleshooting
LED status indications
State
Idle
Ramping
Bypass
Alarm
Internal fault
Recovery time between
starts*
Relay status indication
State
Idle
Ramping
Bypass
Alarm
Internal fault
Recovery time between
starts*
* Applies to RSBD 45 mm only.
Alarms
The RSBD includes a number of diagnostics and protection features each of which is signalled through a
flashing sequence on the red LED.
RED LED FLASHING
14/06/2023
RSBD Troubleshooting Guide - Rev 1.0
Supply
(green LED)
ON
ON
ON
ON
ON
Flashing
RSBD 45 mm
Alarm
Bypass
(11, 12)
(21, 24)
Closed
Open
Closed
Open
Closed
Closed
Open
Open
N/A
N/A
Closed
Open
Relay contact position
RSBD 75 mm
Alarm
Bypass
(11, 12, 14)
(21, 22, 24)
11, 12
21, 22
11, 12
21, 22
11, 12
21, 24
11, 14
21, 22
11, 14
21, 22
N/A
RED LED OFF
EN
Alarm
(red LED)
OFF
OFF
OFF
Flashing
ON
OFF
Run
(31, 34)
Open
Closed
Closed
Open
Open
N/A
N/A
2
Carlo Gavazzi Ltd.