RFL Electronics GARD 8000 - Table 8-14. Default Logic Timers

System Logic
GARD 8000 SYS RFL Electronics
March 26, 2008 8-20 973.334.3100
8.5.4 TIMERS
The default logic has a series of timers that can be adjusted by the user. All of the timers are set in 1/4
ms increments up to a maximum value of 32.767 seconds. In the following table, N can equal any
function from 1 to 8.
Table 8-14. Default Logic Timers
System Timer
Default
Description
Function N Transmit Command
Extend
1 ms
This sets the length of time the function is transmitted after
the input goes away
Function N Transmit Time delay
1 ms
This sets the length of time before an input causes a trip to
be sent
Receive N Pre-Trip Time delay
1 ms
This sets the length of time a trip function must be received
before it is recognized
Receive N Trip Hold Time delay
1 ms
This sets the length of time a trip output is held active after
the received trip goes away
Channel 1 Guard Before Trip Delay
10 ms
This sets the length of time the channel must be good before
tripping is enabled
Channel 1 Loss of Guard Delay
20 ms
This sets the length of time the channel can be bad before
tripping is disabled
Channel 1 Unblock Security Timer
20 ms
This sets the length of time from when the channel goes bad
until the unblock trips become active.
Channel 1 Unblock Trip Window
170 ms
This sets the length of time the unblock trips are held active
from the start of the unblock security timer. (effectively 150
m in the default)
Distance Trip Delay
1 ms
This sets the length of time the distance trip output is
delayed after it goes active
Distance Trip Hold
5 ms
This sets the length of time the distance trip output is held
active after it goes away.
Re-trip breaker fail delay
1 ms
This sets the length of time the re-trip breaker fail output is
delayed after it goes active
Re-trip breaker fail hold
5 ms
This sets the length of time the re-trip breaker fail output is
held active after it goes away.