23
ENG
“FCR3 three-phase controller” +030222150 - rel. 1.3 - 12.01.2021
8. TABLES OF ALARMS AND SIGNALS
8.1 Alarms
Alarms are indicated by the red LED
red LED status
description
possible cause
of the alarm
off no
alarm
on
digital alarm input
contact open
(normally closed)
or both closed
(normally open)
blinking 1 pulse
temp. probe alarm
temp. probe out-of-range
Tab. 8.a
In the event of simultaneous alarms, the temperature alarm is signalled.
Only the alarm from digital input forces the output to the value defi ned
by parameter ALMO and switches the digital outputs.
The alarm status is also available via serial line.
8.2 Signals
Power is indicated by the green LED. Serial connection status is indicated
by the yellow LED.
Active serial connection (link) is indicated by the blue LED
blue LED status
description
possible cause
off connection
deactivated
cable disconnected
supervisor offl
ine
protocol not supported
on
active connection
the connection is active,
there has been at least one valid
frame in the set time
Tab. 8.b
The serial connection is automatically deactivated after a timeout set by
variable TIMEOUT, between 15 sec and 20 minutes. By default this time
is 30 seconds