shunted to ground. This must be done without raising the potential of
the circuitry in the LPX1000, with respect to ground, to the levels that
will damage the solid state circuitry. Lightning strikes generate
enormous currents for very short periods of time. Unfortunately, the
period of time is long enough to damage solid state components and
many times, other components. The key to success is a very low
resistance path from the surge protector to ground for these currents in
addition to a surge protector that will act fast enough to protect the solid
state circuitry. Several manufacturers offer suitable surge protectors.
ACCESSORY
EQUIPMENT HOOK-
UP
All accessory equipment is
hooked-up to the 22 terminal
barrier strip located on the back
of the control box. See Figure
11. There are no installer
connections inside the control
box. NO ACCESSORY
EQUIPMENT SHOULD BE
INSTALLED IN THE
CONTROL BOX!
If local electrical codes permit,
use the operator's bottom plate
for mounting accessory
components. Otherwise, install
the accessory equipment in an
appropriate electrical box.
The thirteen (13) command
inputs for the LPX1000 require
a switch closure to COMMON of less than 100 OHMS resistance and
for more than 100 milliseconds duration. Two of the inputs -
ALTERNATE and RADIO OPEN - are momentary inputs where the
signal must be released and re-entered to be recognized. The remaining
inputs can be continuous signals. A label on the left side of the control
box lists the function of each of the terminals on the barrier strip, see
Figure 11. Also see the Reference Chart on Page 17 and 18.
INSTALLING AND WIRING VEHICLE DETECTORS
REVERSING LOOP VEHICLE DETECTOR:
If a Reversing Loop
Vehicle Detector is to be a part of this installation, start with this first.
Install a 24 VAC powered, 11 pin (round configuration) vehicle
detector module into the detector socket. The vehicle detector module
must have a relay contact output. The Reversing Loop socket is pre-
installed in the rear of the control panel and is the socket closest to the
operator side wall. The actual loop is installed in the concrete or
asphalt surface in accordance with the manufacturer's instructions and
the information outlined earlier in this manual (see Page 7). Connect
the wires from the actual Reversing loop to Terminals C and D, see
Figure 13. If employing two (2) Reversing Loops as shown in the
diagram on Page 7, and are connecting the loops to the same Loop
Detector, wire in series as shown in Figure 13A.
FREE EXIT VEHICLE DETECTOR:
If also employing a Free Exit
Loop Vehicle Detector, install a 24 VAC powered, 11 pin (round
configuration) vehicle detector module into the detector socket. The
vehicle detector module must have a relay contact output. The Free
Exit Loop socket is pre-installed in the rear of the control panel and is
the socket towards the middle. The actual loop is installed in the
concrete or asphalt surface in accordance with the manufacturer's
instructions and the information outlined earlier in this manual (see
Page 7). Connect the wires from the actual Free Exit loop to Terminals
A and B, see Figure 13.
Set the frequency and sensitivity switches (if any) according to the loop
detector manufacturer's instructions.
WIRING A RADIO RECEIVER
Radio receivers must be of the 4-wire connection hook-up type (where
the power input for the receiver is separate from the receiver’s output
connection). This is necessary as the LPX1000 control board 24 VAC
is isolated from chassis ground. A 3-prong receiver
CANNOT
be
installed in association with the LPX1000 control board.
W A R N I N G !
TO REDUCE THE RISK OF DAMAGE DUE TO
LIGHTNING, ENSURE A SOLID GROUND FROM THE
LPX1000 GROUND WIRE IN THE SERVICE ENTRANCE
4 x 4 HANDY BOX TO THE ELECTRICAL SERVICE
GROUND OR TO A EARTH GROUND STAKE NEAR
THE LPX1000.
IMPROPER WIRING COULD CAUSE
ELECTROCUTION OR DAMAGE TO CIRCUITRY.
FOLLOW LOCAL BUILDING AND ELECTRICAL
CODES.
W A R N I N G !
C
: INSTALLING THE OPERATOR
10
111882
Figure 11:
22 Position Terminal Strip
LOOP
C
D
REV LOOP
STRIP
TERMINAL
REV LOOP
FREE EXIT
FREE EXIT
A
B
REVERSING
EXIT
LOOP
FREE
Figure 13: Wiring A Free Exit or
Reversing Loop Detector
111872
LOOP
C
D
REV LOOP
STRIP
TERMINAL
REV LOOP
REVERSING
REVERSING
LOOP
1st
2nd
Figure 13A: Series Wiring - 2 Loops
112719
