Iskra FPC 200 - External Trip - EXT-T

Functionality
74 USER MANUAL FPC 200 - 3/2017
External trip – EXT-T
External trip function is one of the basics functions of the device. The function is triggered on external signal.
2.6.5.1 Functionality
By using External trip function it is possible to use a
custom binary signal to trigger digital input. A function
than set pickup and trip signal according to user defined
settings. By using protection trip signal it is possible to
trigger a trip of circuit breaker or to associate it to a
desired output relay or LED of protective device.
2.6.5.2 Measurements
The function pickup is triggered by dedicated digital
input signal.
2.6.5.3 Delays
Function includes following delays explained in Chapter
2.1:
 Pickup delay
 Trip delay
 Drop-out delay
2.6.5.4 Block settings
Pickup of any instance separately of protection can be
individually blocked by any user defined signal [2.6.5.].
2.6.5.5 Setting parameters
Parameter
Range
Description
Enabled
No
Yes
Enabling protection function.
Operate mode
Off
On
Enabling protection function separately for each group level.
Trip delay
0,00 … 1,00 … 300,00 s
Delay of trip signal.
Pickup delay
0 … 5 … 1000 ms
Time stabilization of fault detection. As a filter of short disturbances on
measuring circuits. Time before protection starts.
Drop-out delay
0,00 … 0,20 … 60,00 s
Time stabilization of pickup signal. Time when the monitored value is
outside the operating range, but the protection does not stop yet.
Pickup block
None
Variable 1
Variable 2
Variable 3
Variable 4
Source of blocking signal.
Table 70 External trip function parameters.
2.6.5.6 Associated digital inputs
Digital input
Description
External trigger 1
External trigger of External trip 1 protection.
External trigger 2
External trigger of External trip 2 protection.
Table 71 Selectable digital inputs of the function.
2.6.5.7 Counters
Name
Description
Pickup
Total consecutive number of pickup signals.
Trip
Consecutive number of trip signals.