Chamberlain MADCBB - Manual (Page 14)

14
FEATURES AND FUNCTIONS »
S2 DIP SWITCHES
TIMER-TO-CLOSE
DIP Switch S2-1 to S2-5
The S2-1 to S2-5 DIP switches will set the period of time the gate remains
opened after reaching the OPEN position.
Each DIP switch represents the number of seconds the gate will remain OPEN
before CLOSING. With the S2-3 DIP switch in the ON (factory default) position,
there are 4 seconds to allow a vehicle enough time to move out of the path of
the closing barrier arm.
Turning multiple switches ON will combine the amount of time the barrier arm
remains OPEN.
The maximum hold OPEN time is 32 seconds.
To de-activate this feature turn S2-7 DIP switch to the OFF position.
F
AUX LIMITS
1
J2
J
M/S
1
R1
U4
R12
S1
D8
1 2 3 4 5 6 7 8
S2
1 2 3 4 5 6 7 8
D1Ø
R
F G H I S2 Dip Switch Block
S2 DIP SWITCHES
MULTIPLE VEHICLE MEMORY
DIP Switch S2-6
With S2-6 DIP switch in the ON position, the Multiple Vehicle Memory will
activate, with inputs on terminal 4 and Common (COM) on the J5 terminal
strip. Any of the terminals 9-12 on the J5 terminal strip can be used for
common.
NOTE: With Multiple Vehicle Memory activated, the barrier arm will remain
OPEN until the pre-authorized number of vehicles pass over the Close Loop.
AUTO CLOSE
DIP Switch S2-7
The S2-7 DIP switch (Auto Close) should be activated in case one or more of
the pre-authorized vehicles DO NOT pass through the gate. The barrier arm
will close after the set amount of time elapses and the count memory is reset
to zero.
FAIL SAFE (AUTO OPEN ON AC POWER FAILURE)
DIP Switch S2-8
With S2-8 DIP switch in the ON position, the barrier arm will automatically
OPEN approximately 15 seconds after a loss of power. Once the power has
been restored the operator will resume normal operation after any input.
With S2-8 DIP switch in the OFF position, the barrier arm will resume normal
operation until the batteries drop below 50% at which time the barrier arm will
OPEN and remain opened until the batteries are fully charged.
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H
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