Chamberlain LiftMaster HS670 Owner's Manual page 18

PROGRAM SETTINGS (DIP SWITCH #2) CONT'D
EDGE/PHOTO OPEN
This switch (S2-3) selects edge or photo sensor for the gate
opening protection input.
Open Photo Eye (Pause): When the controller is configured for
photo eyes, the input functions to pause the gate during the
opening cycle. Once the input is cleared the gate continues to
open.
Open Edge: When the controller is configured for safety edges,
the input functions to reverse the gate to the close limit when the
edge is activated during the opening cycle.
EDGE OPEN
S2
ON
ON
1 2 3 4
PROGRAM SETTINGS (DIP SWITCH #4)
DUAL GATE COMMUNICATIONS
The controller is capable of running the operator in a master or
second mode depending on (S4) switch setting.
Before initiating any command the master unit queries for the
presence of a "second unit" for a time period of one second. If
the master gets no response the operator will operate in a stand
alone mode. NOTE: For single unit applications, a jumper must be
placed between TB11 and TB12. In this mode no further
communications will take place during travel. If the master
detects the presence of a second unit the master will continue to
query the second unit during travel. The second unit will send a
response to the master for every query. The second operator will
stop if there is a period of one second or more of no
communications.
When two operators are connected in dual gate configuration
accessories may be connected to either the master or second.
NOTES:
• Do not run Master/Second communication wiring in the
same conduit as the power and control wiring.
• The Second unit will require a normally close stop circuit
for proper system operation.
• After Master/Second wiring has been completed and the
S4 switch programmed, both units must have their power
cycled to initiate proper Master/Second communication.
• The motor learn function must be completed in stand
alone mode prior to Master/Second wiring.
P R O G R A M M I N G
PHOTO OPEN
S2
ON
ON
1 2 3 4
EDGE/PHOTO CLOSE
This switch (S2-4) selects edge or photo sensor for the gate
closing protection input.
Close Photo Eye (Reverse): When the controller is configured for
photo eyes, the input functions to reverse the gate to the open
limit when activated during the close cycle.
NOTE: Timer to close will reset if enabled.
Close Edge: When the controller is configured for safety edges,
the input functions to reverse the gate to the open limit when
activated during the close cycle. The entrapment is not cleared at
the limit and the timer to close will be disabled. The timer to
close may be enabled by activating the interrupt loop, soft open
or hard open input.
EDGE CLOSE
S2
ON
ON
1 2 3 4
Master or Standalone
Gate Setting
S4
FIGURE 1
TB12 TB11
STREET
HS670
18
PHOTO CLOSE
S2
ON
ON
1 2 3 4
Second Gate
Setting
Master Master
Unit Unit
ON
ON
S4
Second
Second
Unit
Unit
TB11 TB12
Shielded Cable
(Twisted Pair)
Minimum 18 Gauge
CONDUIT
HS670
Interrupt
Loop
(Gate Conduit)
Interrupt
Loop
6'
COMPLEX OR
PARKING LOT