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CONTENTS
SectionPage
1.0 GENERAL ...................................................................................................5
1.1 IMPORTANT SAFEGUARDS AND WARNINGS ...............................5
BRequirements to Wire Power to Pan and Tilt Motors ........................11
CMaximum Cable Distances Using RB24 or RB115 Relay Boxes......11
DMechanical Parts List (Figure 14) .....................................................20
EMechanical Parts List (Figure 15) .....................................................22
FHardware Parts List (Figure 16) ........................................................24
REVISION HISTORY
Manual #DateComments
C342M-PSA1/97Original version.
9/97Revised Figure 17 to move note A from pin 30 to pins 9
12/97Changed ENGPT780-24P/PP to PT780-24P/PPPSA and
11/98Revised procedures in Section 5.0, Maintenance.
and 14. Revised Table A to show that pins 30 and 4 are
used for sync signal and that pins 9 and 14 are not
used on ENGPT780-24SL/P. Changed manual to new
format.
changed ENGPT780-24SL/P to PT780-24SL/PPSA.
Repaginated manual.
Pelco Manual C342M-PSA (11/98)3
3
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4Pelco Manual C342M-PSA (11/98)
4
1.0 GENERAL
1.1 IMPORTANT SAFEGUARDS AND WARNINGS
Prior to installation and use of this product, the following WARNINGS should be
observed.
1.Installation and servicing should only be done by qualified service personnel
and conform to all local codes.
2.The weight of the camera/lens and enclosure shall not exceed 52 lb (23.59 kg).
3.Only use replacement parts recommended by Pelco.
4.After replacement/repair of this unit’s electrical components, conduct a resistance measurement between line and exposed parts to verify the exposed
parts have not been connected to line circuitry.
5.The installation method and materials should be capable of supporting four
times the weight of the enclosure, pan/tilt, camera and lens combination.
The product and/or manual may bear the following marks:
This symbol indicates that dangerous voltage constituting a
risk of electric shock is present within this unit.
This symbol indicates that there are important operating and
maintenance instructions in the literature accompanying this
unit.
CAUTION:
RISK OF
ELECTRIC SHOCK.
DO NOT OPEN.
TO REDUCE THE RISK OF ELECTRICAL SHOCK,
DO NOT REMOVE COVER. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
CAUTION:
Please thoroughly familiarize yourself with the information
in this manual prior to installation and operation.
Pelco Manual C342M-PSA (11/98)5
2.0 DESCRIPTION
The PT780-24P/PPPSA and PT78024SL/PPSA pan/tilt units are designed for medium-duty, indoor/outdoor use.
The PT780-24P/PPPSA pan/tilt is designed for use with the EH4718L/WPSA and
EH4718L/PSA environmental enclosures.
The PT780-24SL/PPSA pan/tilt is designed for use with the EH4718LDB/WPSA
environmental enclosure.
Pelco’s RediLINK™ connector makes it simple and quick to install an enclosure.
The weight of the enclosure with camera and lens must not exceed 52 pounds
(23.56 kg).
You can easily remove the clamshell covers from the sides of the pan/tilt units to
access all internal parts without having to remove the camera enclosure. This makes
it easy to service the units and to adjust the pan and tilt limit stops.
2.1 MODELS
PT780-24P/PPPSAHeavy-duty, indoor/outdoor pan/tilt with preset positioning
PT780-24SL/PPSAMedium-duty, indoor/outdoor pan/tilt with preset positioning
capabilities. 24 VAC.
capabilities and 360° pan rotation. 24 VAC.
6Pelco Manual C342M-PSA (11/98)
3.1 MOUNTING
3.0 INSTALLATION
NOTE:
To insure proper wiring and
operation of your equipment, it is recommended that you test the pan/tilt
unit and associated equipment in your
facility before installing it in the field.
Refer to Sections 3.2 through 3.4.
CAUTION:
The PT780
pan/tilt units are designed
for upright or inverted (base
up) operation. Never mount
the pan/tilt horizontally.
NOTE:
If you mount your pan/tilt unit
in the inverted position, you must install a rain cover (part number
90010019).
Attach the pan/tilt unit to a wall or ceiling mount. Follow the instructions that are
provided with the mount. Make sure the mounting surface and the selected mount
can support four times the combined weight of the pan/tilt unit and the camera
enclosure (including the camera and lens). The pan/tilt unit weighs approximately
21.5 pounds (9.68 kg). Refer to the manuals for your enclosure, camera, and lens
for the weights of those items.
Proceed to Section 3.2, ENCLOSURE INSTALLATION.
3.2 ENCLOSURE INST ALLATION
Attach the camera enclosure to the pan/tilt unit. Follow the instructions that are
provided with the enclosure.
Proceed to Section 3.3, ELECTRICAL INSTALLATION.
3.3 ELECTRICAL INSTALLATION
3.3.1 LRD41A11-X Legacy Receiver/Drivers
WARNING:
damage to the wiper, if your
To prevent
Connect the 37-pin round connector from the pan/tilt unit to the mating connector
on the receiver/driver.
enclosure has one, AC high
to turn on the wiper (pin 25
of the 37-pin connector) must
come from the same circuit
that provides power to the
wiper (pin 15 of the 37-pin
connector). This is because
the wiper and the on/off control share the same AC neutral (pin 16). See Figure 2.
Pelco Manual C342M-PSA (11/98)7
3.3.2 All Control Equipment Except
LRD41A11-X Legacy Receiver/Drivers
Make the interconnecting cable to link the 37-pin round connector from the pan/tilt
unit to the control equipment.
For cable requirements, refer to the following tables:
Table A:Connector Pin Designations
Tables B and C:Requirements to Wire Power to Pan and Tilt Motors
To determine the size of wire to use for enclosure power (pins 15 and 16), add
together the wattage of the camera and the wattage of the window wiper (if the
enclosure has a wiper). The wattage of the wiper is 25 watts.
If the pan/tilt has the optional heater blanket, the heater blanket requires 40 watts of
power (pins 31 and 32).
The following are some recommended common installation practices:
•For unshielded conductors, use jacketed, stranded, multiconductor cable, with
additional conductors than needed for future servicing and/or additions. Use
color-coded conductors for ease of wiring and to identify functions at a later
date.
•Keep a wiring diagram with the system for later reference.
Refer to Figure 1 and the following steps to construct the end of the cable that
connects to the pan/tilt unit:
WARNING:
To prevent
damage to the wiper , if your
enclosure has one, AC high
to turn on the wiper (pin 25
of the 37-pin connector)
must come from the same
circuit that provides power to
the wiper (pin 15 of the 37pin connector). This is because the wiper and the on/
off control share the same
AC neutral (pin 16). See Figure 2.
1.Slide the unshielded and coaxial cables through the cable shell and rubber
boot.
2.Strip one inch of the jacket from the cables.
3.For the unshielded conductors, strip 1/8 inch of insulation from the individual
wires.
4.For the coax, unwrap the braid and twist it into a single conductor. Strip 1/8
inch of insulation from the center conductor. If you are using two coax cables
- one for video output and one for camera synchronization - twist the braid
from the two coax cables together.
5.Insert the end of each wire into a socket and crimp the end of the socket over
the wire’s insulation. This provides strain relief for the bare wire. Then crimp or
solder the bare wire to the socket.
6.Refer to Table A and push each socket into the proper hole of the 37-pin connector until it snaps into place. Once a socket snaps into place, it can not be
removed without a special AMP tool.
7.Slide the cable shell down the cabling and screw it to the 37-pin connector.
8.Screw the cable clamp to the cable shell.
9.Connect the 37-pin connector to the mating connector on the pan/tilt unit.
10. To make a watertight assembly, use RTV silicone (such as Bostik #9732 or
equivalent) on both sides of the connector to fill any gaps between the cable
clamp, shell, and cable.
Proceed to Section 3.4, PAN AND TILT LIMIT STOP ADJUSTMENTS.