Chassis Configuration Settings
GARD 8000 SYS RFL Electronics
April 1, 2012 7-63 973.334.3100
ON-OFF Only
Block Hold Timer (0-50 inc 1)
The “Block Hold Timer” delays the drop out of the block output after the blocking signal is lost. This
delay can be set in the range of 0 to 50ms in increments of 1ms. The recommended default setting is
10ms. The timer increases the reliability of the blocking receiver by preventing an intermittent loss of
carrier. This loss can be caused by arc gap flashover which would allow the protective relay to over-
trip for an external fault condition.
Start 1 input polarity
Sets the polarity of the Start 1 input contact. Can be set to Normal or Inverted. When set to Normal, the
contact is active when the station battery voltage is present, and is inactive when the station battery
voltage is not present. When set to Inverted, the contact is inactive when the station battery voltage is
present, and is active when the station battery voltage is not present.
Start 2 input polarity
Sets the polarity of the Start 2 input contact. Can be set to Normal or Inverted. When set to Normal, the
contact is active when the station battery voltage is present, and is inactive when the station battery
voltage is not present. When set to Inverted, the contact is inactive when the station battery voltage is
present, and is active when the station battery voltage is not present.
Stop 1 input polarity
Sets the polarity of the Stop 1 input contact. Can be set to Normal or Inverted. When set to Normal, the
contact is active when the station battery voltage is present, and is inactive when the station battery
voltage is not present. When set to Inverted, the contact is inactive when the station battery voltage is
present, and is active when the station battery voltage is not present.
Stop 2 input polarity
Sets the polarity of the Stop 2 input contact. Can be set to Normal or Inverted. When set to Normal, the
contact is active when the station battery voltage is present, and is inactive when the station battery
voltage is not present. When set to Inverted, the contact is inactive when the station battery voltage is
present, and is active when the station battery voltage is not present.
Start1/Start2 And/Or
Selects whether the Start 1 and Start 2 contacts are ANDed or ORed. The options are AND or OR.
Stop1/Stop2 And/Or (on-off only)
Selects whether the Stop 1 and Stop 2 contacts are ANDed or ORed. The options are AND or OR.
Local TX causes Block
Selects whether or not to generate a local block when a block is transmitted to the far end. Can be
Enabled or Disabled.
General Settings Definitions (continued):
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