MSG-A • MSG-D OPERATOR INSTALLATION GUIDE
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TERMINAL CONNECTION DESCRIPTIONS
TERMINALS
FUNCTION
DESCRIPTION OF FUNCTION
24VAC
24VAC
Provides fused 24Volt AC power for accessories.
24VAC N
Note: DC models will NOT have 24Volt AC power available.
24VDC+
24VDC
Provides fused 24Volt DC power for accessories.
24VDC- COMM.
1 & 4
OPEN
Opens the operator. Several accessories such as button stations, keypads, trans-
mitters and card readers can be wired to open.
3 & 4
CLOSE
Closes the operator. Use caution when wiring accessories to these terminals.
The gate must be clearly visible from the location of any accessories wired
to close.
4 & 5
SINGLE-BUTTON
Performs the single-button function which will alternate between open and close
or open, stop and close - depending on dip switch #3. (See page
10
for details.)
2 & 4
STOP
Stops the operator. If no stop button is used, a jumper is required across
2&4
.
4 & 6
REVERSE
This function will cause a reversal when the gate is traveling closed and will travel
back to the fully open position. Loop detectors are often wired for reverse.
4 & 50
OPEN
This function works only while the operator is opening. Any signal to this function
will cause the gate to stop, reverse a short distance, and then stop again. At this
time the auto close timer is disabled, and a renewed input will be required to start
the gate again. Should the gate be restarted and the signal occur again prior to
reaching a limit, the gate will stop again, and this time will sound the emergency
alarm and lock out.
4 & 51
CLOSE
This function works exactly like the OPEN OBSTRUCTION, except that it will only
work in the closing direction.
4 & 11
SHADOW/HOLD
This function will keep the gate in its fully open position while the signal is present.
This is typically used with a loop and loop detector to keep a large swing gate
open while vehicular traffic is passing through.
24VDC+ & 60
RUN/PRE-START
A 24Volt DC device such as a strobe light or alarm can be wired to these terminals.
Depending on dip switch #2, these devices will either begin two seconds before the
operator starts, or only while the motor is running. (See page
10
for details.)
OBSTRUCTION
OBSTRUCTION
You must follow all required safety precautions and instructions at all times. Review the safety brochure
included with the operator. If any pages are missing or unreadable, contact OSCO at 1-800-333-1717 to request
additional copies.
Never connect a button station within reach of the gate or on the side of the gate operator.
Do not adjust the circuit board current sensing feature too high. It should be adjusted high enough to keep the
gate from falsely triggering the sensing, but no higher than necessary for the gate to operate. Do not defeat the
purpose of this function!
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