Pelco PT280, PT180, PT270 User Manual

®

PT175-24P
PT180 Series
PT270 Series
PT280 Series

Light Duty Pan/Tilt

Maintenance/

Service Manual

C323SM (9/98)

Pelco • 3500 Pelco Way, Clovis • CA 93612-5699 USA • www.pelco.com

In North America and Canada: Tel [phone] or FAX [phone]

International Customers: Tel [phone] or FAX [phone]

CONTENTS

Section Page

1.0 GENERAL..................................................................................................3

1.1 IMPORTANT SAFEGUARDS AND WARNINGS ...............................3

2.0 DESCRIPTION ..........................................................................................4

2.1 MODELS............................................................................................4

3.0 MAINTENANCE.........................................................................................5

3.1 RESETTING POTENTIOMETERS ....................................................5

3.2 SERVICING DRIVE CHAIN ASSEMBLIES .......................................6

3.2.1 Tightening Drive Chains..........................................................6

3.2.2 Chain Drive Lubrication ..........................................................6

4.0 EXPLODED ASSEMBLY DIAGRAMS .......................................................7

5.0 WIRING DIAGRAMS ................................................................................22

6.0 WARRANTY AND RETURN INFORMATION ...........................................28

LIST OF ILLUSTRATIONS

Figure Page

1 Sealant Locations ..............................................................................5

2 Servicing the PT175-24P and PT180 Series .....................................6

3 Servicing the PT270/PT280 Series....................................................6

4 PT175-24P Exploded Assembly Diagram.......................................... 7

5 PT180 Series Exploded Assembly Diagram.....................................10

6 PT270 Series Exploded Assembly Diagram.....................................14

7 PT280 Series Exploded Assembly Diagram (Parts) .........................17

8 PT280 Series Exploded Assembly Diagram (Hardware)..................18

9 PT175-24P Wiring Diagram ..............................................................22

10 PT180 Series Wiring Diagram ..........................................................23

11 PT270 Series Wiring Diagram ..........................................................24

12 PT280-24P/PT280-24SL Wiring Diagram .........................................25

13 PT280-24P/PP Wiring Diagram ........................................................26

14 PT280-24SL/PP Wiring Diagram ......................................................27

LIST OF TABLES

Table Page

A PT175-24P Mechanical Parts List .....................................................8

B PT175-24P Hardware List..................................................................9

C PT180 Series Mechanical Parts List .................................................11

D PT180 Series Hardware List .............................................................13

E PT270 Series Mechanical Parts List .................................................15

F PT270 Series Hardware List .............................................................16

G PT280 Series Mechanical Parts List.................................................19

H PT280 Series Hardware List .............................................................21

I PT280 Series Electrical Parts List ....................................................25

REVISION HISTORY

Manual # Date Comments

C323SM 9/98 Original version.

2 Pelco Manual C323SM (9/98)

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. Unless the unit is specifically marked as a NEMA Type 3, 3R, 3S , 4, 4X, 6, or
6P enclosure, it is designed for indoor use only and it must not be installed
where exposed to rain and moisture.

3. The weight of the camera, lens, and enclosure shall not exceed 15 lb (6.81 kg)
for the PT270 Series and PT280 Series or 20 lb (9.08 kg) for the PT175-24P
or PT180 Series.

4. Only use replacement parts recommended by Pelco.

5. 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.

6. 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 C323SM (9/98) 3

2.0 DESCRIPTION

The PT175-24P is a light duty, indoor/outdoor pan and tilt unit capable of handling
enclosure, camera and lens combinations weighing up to 20 lb. The PT175-24P is
equipped with 24 VAC motors.

The PT180-24P and PT180-24SL are light duty, indoor pan/tilt units capable of
handling all enclosure, camera and lens combinations up to 20 lb (9.08 kg) in weight.
The PT180-24P and PT180-24SL are equipped with 24 VAC motors.

The PT180-24SL has the added feature of 360° pan rotation and both pan/tilts are
pre-wired for all control functions: pan/tilt, motorized z oom lens, camera power and
video. All connections are made at the input connector, eliminating the need for
wiring harnesses.

Pan/tilts in the PT270 Series are engineered to accommodate lightweight CCTV
cameras and are capable of handling enclosure, camera and lens combinations
weighing up to 15 lb (6.8 kg). The pan/tilts f eature long-lif e 24 VAC , 120 VAC or 230
VAC motors.

The pan/tilts of the PT280-24 Series are mini-size, light duty, indoor units capable
of supporting loads up to 15 lb (6.8 kg). They operate on 24 VAC.

They are factory pre-wired for pan and tilt control functions, motorized zoom lens
operation, camera power, and video. All connections are made at the input/output
connectors, eliminating the need for wiring harnesses. This greatly reduces instal­lation time, while increasing reliability and serviceability.

2.1 MODELS

PT175-24P Light duty pan/tilt, 24 VAC
PT180-24P Light duty pan/tilt, 24 VAC
PT180-24SL Light duty pan/tilt with SL option (360° pan rotation), 24 VAC
PT270P Light duty “mini” pan/tilt, 120 VAC
PT270-24P Light duty “mini” pan/tilt, 24 VAC
PT270P/230 Light duty “mini” pan/tilt, 230 VAC
PT280-24P Mini-size, light duty pan/tilt, 24 VAC
PT280-24SL Mini-size, light duty pan/tilt with 360° pan rotation, 24 VAC
PT280-24P/PP Same as PT280-24P except with preset positioning capabili-

PT280-24SL/PP Same as PT280-24SL except with preset positioning capabili-

ties.

ties.

4 Pelco Manual C323SM (9/98)

PT175-24P Only

If your pan/tilt is installed in an inverted position, apply RTV silicone sealant to the
areas circled in Figure 1 after you reinstall the cover.

3.1 RESETTING POTENTIOMETERS

3.0 MAINTENANCE

IMPORTANT:

Be very careful
when resetting potentiometer
switches. Be sure that the pan/tilt
has been centered between maxi­mum pan and tilt travel, regardless
of the adjustable limit stops. Fail­ure to observe caution when reset­ting potentiometers could result in
damage to the preset positioning
ability of the pan/tilt.

WARNING:

NEVER
reposition the pan fixed
limit stop. Doing so
WILL DAMAGE the
wiring harness and, if
the pan/tilt has preset
positioning, COULD
cause the pan potenti­ometer to BREAK.

PT280-24P/PP and PT280-24SL/PP Models Only

Models with preset positioning (PP) use potentiometer switches that are factory set
to the full range of pan and tilt travel. Under normal operating conditions and at
routine service intervals they do not need adjusting.

Should your pan/tilt require any work on the drive mechanism other than routine
maintenance, perform the following procedure to reset the potentiometers.

To begin, remove the three screws on the front of the pan/tilt housing and lift the
cover to gain access to the pan and tilt motor assemblies.

1. Remove the potentiometer gears and position the pan/tilt to the middle of its
maximum pan and tilt travel, regardless of the position of the adjustable limit
stops. That is, the tilt table should be level and the fixed limit stop should be
opposite the limit switch.

2. Turn a potentiometer all the way in one direction until it stops, then observing
the number of turns, turn it back the other way until it stops. Rotate the poten­tiometer half the number of turns the other way to reach the center.

3. Replace the potentiometer gear.

4. Perform steps 2 and 3 f or the other potentiometer.

➛

➛

➛

Figure 1. Sealant Locations

Pelco Manual C323SM (9/98) 5

3.2 SERVICING DRIVE CHAIN ASSEMBLIES

Inspect the pan/tilt unit every six months to ensure trouble-free operation and an
extended product life. Harsh environments and/or continuous motion applications
may require more frequent maintenance.

Please read all of the instructions that follow before servicing the pan/tilt.
To begin, remove the three screws on the front of the pan/tilt housing and lift the

cover to gain access to the pan and tilt motor assemblies.

3.2.1 Tightening Drive Chains

Check the pan and tilt drive chains for tension. A mov ement of 1/32 of an inch to 3/32
of an inch in the chains is acceptable. If the mov ement of a chain e xceeds 3/32 of an
inch, adjust the chain as follows:

1. Loosen the screws securing the motor to the mounting frame.

2. Pry on the motor to apply tension to the chain. Do not over-tension the drive
chain.

3. Keep tension on the chain while tightening the screws.

3.2.2 Chain Drive Lubrication

Sprockets, chains, and gears should be well greased. If necessary, lubricate the
pan and tilt gears, sprockets, and chains as follows with a high-quality grease ca­pable of withstanding temperatures from -50° to 170°F (-46° to 77°C). Do the fol-
lowing:

1. Liberally apply grease to the pan and tilt gears, chains, and sprock ets (refer to
Figure 2 or 3).

2. Operate the pan and tilt motors to spread the grease across the parts.

3. Apply additional grease if necessary.

4. Reinstall the cover. If the pan/tilt is installed outdoors in an inverted position,
apply RTV silicone sealant as shown in Figure 1.

APPLY GREASE
TO THESE
LOCATIONS

APPLY GREASE
TO THESE
LOCATIONS

00063

Figure 2. Servicing the PT175-24P and PT180 Series

Figure 3. Servicing the PT270/PT280 Series

6 Pelco Manual C310M-E (8/98)

4.0 EXPLODED ASSEMBLY DIAGRAMS

Figure 4 . PT175-24P Exploded Assembly Diagram

Pelco Manual C323SM (9/98) 7

Table A. PT175-24P Mechanical Parts List

Item Quantity Description Part Number

11 Tilt Side Plate 1554038COMP
21 Pan Side Plate 1554039COMP
31 Bottom Plate 1554055COMP
41 Tilt Shaft Assembly 1551009COMP
51 Tilt T able 1554037COMP
61 Cover 1554041COMP
71 Pull Up Bar 1554042COMP
81 Tilt Gear 1554144COMP

91 Hub Tilt Gear 6804049COMP
10 1 Plate Backup Tilt Gear 1554046COMP
11 1 Body Spacer 1554047COMP
12 1 Pan Limit Pin 1554049COMP
13 1 Tilt Limit Pin 1554049TCOMP
14 2 Tilt Limit Stops 1554050COMP
15 1 Bracket Pan Limit 1554051COMP
16 1 Bracket Tilt Limit 1554052COMP
17 2 Cover Plate Tilt Shaft 1554053COMP
18 1 Spindle 1554054ACOMP
19 2 Bearing FB810-5 1556004
20 1 Connector Mating Assy 9-Pin (not shown) 1751000COMP
21 1 Chain Assy Tilt 1751002COMP
22 1 Chain Assy Pan 1751003COMP
23 1 Motor Plate 1751062WA
24 1 Sprocket Motor Shaft 17512004
25 1 Sprocket Pan 1754001COMP
26 1 Bracket Pan Motor 1754002COMP
27 1 Sprocket Worm Gear Shaft 1754022COMP
28 1 Worm Gear Shaft 1754064COMP
29 1 Tilt Motor Gearhead 1758006
30 1 Nut, spindle 25010002
31 2 Bearing Pan Spindle 2506000
32 1 Pan Motor & Gearhead Assy, 24 VAC 2508001
33 1 Sprocket 25B20-3/8 W/SS 27012008
34 1 Tilt Motor Only, 24 VAC 5708007
35 3 Limit Stop, Pan 58010006
36 1 Bearing B46-2 5806005
37 1 Tilt Worm Gear 7712006
38 2 Bearing Cage Only A05CN 776001
39 4 Bearing Washer Only 776002

40 1 Connector 9-Pos Recep (not shown) CON206705-1

41 9 Connector Crimp Pins, CPC (not shown) CON66103-2
42 1 Bushing FB46-3 PT250010005
43 8 Sleeving PVC 105-16 X inch (not shown) SLV16105N
44 4 Switch 1SM1 SWI1SM1
45 4 Switch Actuator w/Insulator SWIJS138B
46 1 Terminal Strip, 9-Pin (not shown) TRS2009
47 2 Electrovert Sp-1/4CP x Foot (not shown) ZSSPIROBAND
48 1 Capacitor 15MF 100V (not shown) CAPU0015.0/100N
49 1 Capacitor 60MF 200V (not shown) CAPU0060.0/200N

8 Pelco Manual C323SM (9/98)

Table B. PT175-24P Hardware List

Item Quantity Description Part Number

A4Snap Ring 15510000
B2Pin Dowel 1/8" X 5/8" Hardened Steel 15510001
C2Pin Dowel 1/8" X 1/2" Hardened Steel 15510003
D1Pin, taper #1 x 1-1/4 17510000
E4Gasket,1/8" X 1/2" X FT EH550010030
F2Grommet #AN931-3-5 GRO2172N
G1Bolt, 1/4-20 x 5/8" Hex C/S SS ZH1/420X.625CH
H6Bolt, 1/4-20 x 3/4" flat HdPhil SS ZH1/420X.750SFS
I1Washer, internal star, 1/4" SS ZH1/4LWSIS
J—Not used
K1Set Screw 10-32 x 3/16” Soc Knur Blk ZH10-32X.187S
L2Set Screw 10-32 x 5/16” Soc Knur Blk ZH10-32X.312S
M11Screw, 10-32 x 1/2" Hex Soc Hd SS ZH10-32X.500CS
N10Split lock washer, #10 SS ZH10LWSSL
O12Flat washer #10 x .064SS ZH204X436X60C
P8Screw, 2-56 x 7/16" Pan Phil SS ZH2-56X.437SPP
Q1Washer, flat, 3/16 USS Spl-Size Pltd ZH260X562X65C
R4Screw 4-40 x 1/4” Pan Phil SS ZH4-40X.250SSP
S4Screw, 4-40 x 3/8" Pan Phil SS ZH4-40X.375SPP
T4Washer, internal star #4 SS ZH4LWSIS
U2Washer, flat 1/2” ZH515X875X62

Pelco Manual C323SM (9/98) 9