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ALARM MENU (DEFAULT):
Description
Threshold
Time
hh:mm:ss
Alarm Relay
Steps
Too high voltage
10%
00:15:00
ON
ON
Too low voltage
15%
00:00:05
ON
OFF
Too high current
110%
00:02:00
ON
OFF
Too low current
2.5%
00:00:05
ON
ON (00:02:00)
Overcompensation
ON
00:02:00
ON
OFF
Undercompensation
ON
00:15:00
ON
OFF
Overtemperature
45°C
00:00:10
ON
OFF
THD V
OFF
00:00:00
ON
OFF
THD I
OFF
00:00:00
ON
OFF
Too low Cos
j
OFF
00:01:00
ON
OFF
External overtemperature
OFF
00:00:10
ON
OFF
Capacitors overload
(1)
Thresh.1 = 125%
00:03:00
ON (00:05:00)
-
Thresh.2 = 150%
-
No-Voltage release
(2)
ON
-
OFF
ON
Alarm page sample with the maximum configurable options:
(1) The delay time of Capacitor overload alarm operates inversely proportional to the overload entity, compared to the
programmed thresholds of Thresh.1 and Thresh.2.
When the overload is lower than Thresh.1 the alarm will not be generated.
When the overload is equal to Thresh.1, the delay time is equal to the one set.
When the overload increases, the delay time decreases proportionally until it reaches zero once the value set at
Thresh.2 is reached.
With Thresh.1 at off , there is no tripping until the Thresh.2 value is exceeded and the immediate disconnection of
the steps occurs.
With Thresh.2 at off , the delay time is constant.
Protection is performed through the Steps disconnection and Alarm relay enabling ( if ON ).
The alarm is deactivated only after the value has dropped and stay costantly below the settled threshold for all the
Alarm relay-off delay time set. Now the steps are reconnected and the system will work as usual.
Note:
This protection can only be used if the capacitors are not equipped with filtering devices such as inductors or similar.
(2) A no-voltage release has occurred on the line voltage inputs for more than 9ms.
Threshold % or status
Alarm relay status
Step disconnection status
Threshold delay
Step disconnection delay
Alarm relay-off delay
