RFL 9780 RFL Electronics Inc.
April 8, 2003 6-11 (973) 334-3100
6.4.5 CONFIGURATION OF UNBLOCK TRIP WINDOW TIMER
The position of switches SW3-1 through SW3-3 determines the total period of low level trip which will
be generated once the Unblock Security Timer (See 6.3.7) has been satisfied. The time period shown in
Table 6-8 for each switch position is cumulative. A switch in the ON position enables its corresponding
time period. An offset of 150ms is added to this in order to calculate the total time period. The
selectable timer range is between 150ms and 500ms in 50ms increments. This timer is used only if the
Unblock Function is enabled.
Table 6-8. Configuration of Unblock Trip Window Timer
Switch SW3-1 SW3-2 SW3-3
Time (ms) 200 100 50
Example: The Unblock Trip Window Timer configured to generate a low level trip for 300ms would
be set as follows:
SW3-1: OFF 0ms
SW3-2: ON 100ms
SW3-3: ON 50ms
OFFSET 150ms
TOTAL 300ms
6.4.6 CONFIGURATION OF GUARD HOLD TIMER
The position of switches SW3-4 through SW3-8 determines the minimum period of time a Guard will
be held once a valid guard has been established. The time period shown in Table
6-9 for each switch position is cumulative. A switch in the ON position enables its corresponding time
period. The selectable timer range is between 0ms and 31ms in 1ms increments. When all switches are
in the OFF position, the Guard signal is not held.
Table 6-9. Configuration of Guard Hold Timer
Switch SW3-4 SW3-5 SW3-6 SW3-7 SW3-8
Time (ms) 16 8 4 2 1
Example: The Guard Hold Timer configured to hold a valid Guard signal for a minimum of 12ms
would be set as follows:
SW3-4: OFF 0ms
SW3-5: ON 8ms
SW3-6: ON 4ms
SW3-7: OFF 0ms
SW3-8: OFF 0ms
TOTAL 12ms
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