Chamberlain BG 3000-B1 Installation And Operation Instructions Manual page 22

Barrier gate operator
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7. Alternate Action
1. If you want the CYCLE input (Entry system) or RADIO input (Transmitter) to both open and
close the gate, on switch S1 set TIMER to OFF and ATG to OFF.
2. Activate the CYCLE command, wait until the gate is fully open, then activate the CYCLE
command again. The gate should close, verifying Alternate Action operation.
Note: If you select Alternate Action, you cannot use ATG = ON and TIMER = ON in
procedures 8 and 9 that follow.
8. Reclose Timer
1. If you want a fully open gate to automatically close after a period of time, on switch S1, set
TIMER to ON and adjust Reclose Timer pot R94 to set the time period.
2. If you don't want the gate to close automatically, on switch S1, set TIMER to OFF.
3. Activate any entry command (except Manual OPEN) to open the gate and verify the Reclose
Timer operation.
NOTE: Reclose Timer is not functional when the Manual Open command is used.
9. Inside Interrupt Loop and ATG (when exiting)
1. If you want the gate to stop when a vehicle drives onto the Interrupt Loop and to restart
when the vehicle drives off the Interrupt Loop, on switch S1, set SLIDE and ATG to OFF.
2. If you want the gate to stop when a vehicle drives onto the Interrupt Loop and to close when
the vehicle drives off the Interrupt Loop, on switch S1, set SLIDE to OFF and ATG to ON.
3. If you want a closing gate to open when a vehicle drives on the Interrupt Loop, on switch S1,
set SLIDE to ON and ATG to OFF.
4. If you want a closing gate to stop when a vehicle drives on the Interrupt Loop and an
opening or closing gate to close when the vehicle drives off the Interrupt Loop, on switch S1,
set SLIDE and ATG to ON.
5. Activate the CYCLE command, drive over the Interrupt Loop, and verify its operation.
10. Interrupt Bar
While the gate is opening , push on the Interrupt Bar. The gate should stop.
11. Maglock
Verify that the maglock activates when the gate is fully closed.
12. Automatic Gate Closure
1. To automatically close a fully open gate after power is restored, on switch S1, set TIMER to
ON.
2. Open the gate fully, then cycle the unit power switch to verify Automatic Gate Closure
operation.
13. Power Fail Option
Verify that switch S3 (Power Fail Open Direction switch) is set to the desired position
(Figure 4).
Rev C
Doc 6001287 (01-20284)
17 of 40

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