®
PT550P Series
PT570 Series
PT573 Series
PT680-24 Series
Medium Duty Pan/Tilt
Maintenance/
Service Manual
C325SM (3/99)
U
®
L
LISTED
In North America and Canada: Tel (800) 289-9100 or FAX (800) 289-9150 • DataFAX (800) 289-9108
International Customers: Tel (1-559) 292-1981 or FAX (1-559) 348-1120 • DataFAX (1-559) 292-0435
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 40 lb (18.16 kg)
for the PT550, PT570, and PT573 Series or 50 lb (22.7 kg) for the PT680
Series.
4. Only use replacement parts recommended by Pelco.
5. After replacement/repair of this unit’s electrical components, conduct a resis-
tance 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.
CAUTION:
TO REDUCE THE RISK OF ELECTRICAL SHOCK,
DO NOT REMOVE COVER. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
Please thoroughly familiarize yourself with the information
in this manual prior to installation and operation.
Pelco Manual C325SM (3/99)
3
2.0 DESCRIPTION
Pan/tilts in the PT550P Series are designed to remotely position a TV camera in
both the horizontal and vertical attitudes. Pan (horizontal) and tilt (vertical) move-
ments are caused by activating small DC motors in the pan/tilt unit. All Pelco units
are equipped with adjustable limits for both pan and tilt, and all motors are equipped
with electrical filtering circuits to suppress RF interference.
The PT573R and the PT573-24R are medium duty, indoor/outdoor pan/tilts de-
signed for V330APT retrofit applications. Both units feature rugged worm gear final
drives to minimize backlash and prevent wind drift, and are fully adjustable for wear.
The PT570P Series and the PT570-24P Series have been engineered to provide
medium duty, indoor/outdoor pan and tilt operation. All units feature rugged worm
gear final drives to minimize backlash and prevent wind drift, and are fully adjust-
able for wear.
The pan/tilt units of the PT680-24 Series are designed for medium-duty, indoor/
outdoor use. 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 re-
duces installation time, while increasing reliability and serviceability.
2.1 MODELS
PT550P
Medium duty pan/tilt, 115 VDC
PT550P/FGP
PT550P/HB
PT550P/PP
Medium duty pan/tilt, 115 VDC, with special speed gearing for
pan (9°/sec pan speed)
Medium duty pan/tilt, 115 VDC, with blanket heater in cover. 75
watts total. 120 VAC.
Medium duty pan/tilt, 115VDC, with position feedback modifi-
cation. Requires preset control or control having AZL option
(position indication meter).
PT550P/RAD
Medium duty pan/tilt, 115 VDC, with radiation resistant wiring
and white epoxy paint. Low level radiation resistant up to 106
rads
PT570P
Medium duty pan/tilt, 120 VAC operation.
PT570P/PP
Medium duty pan/tilt, 120 VAC operation with preset position
option (PP).
PT570P/RAD
SameasPT570Pexceptsuppliedwithradiationresistantwhite
epoxy paint (resistant up to 106 rads)
PT570-24P
Medium duty pan/tilt, 24 VAC operation.
PT570-24P/PP
Medium duty pan/tilt, 24 VAC operation with preset position
option (PP)
PT570P-24P/RAD Same as PT570-24P except supplied with radiation resistant
white epoxy paint (resistant up to 106 rads)
PT573R
Medium-duty, indoor/outdoor, 120 VAC.
Medium-duty, indoor/outdoor, 24 VAC.
Medium-duty, indoor/outdoor, 24 VAC.
PT573-24R
PT680-24P
PT680-24P/PP
PT680-24SL
PT680-24SL/PP
PT680-24P with preset positioning capabilities.
PT680-24P with 360° pan rotation.
PT680-24SL with preset positioning capabilities.
4
Pelco Manual C325SM (3/99)
2.2 OPTIONS
FG/570
Special high speed gears — 9°/4.5° per sec pan/tilt speed.
(Reduces load to 20 lb or 9.08 kg)
FGP/570
FGT/570
Special high-speed gearing for pan — 9°/sec pan speed.
Special high-speed gearing for tilt — 4.5°/sec tilt speed. (Re-
duces load to 20 lb or 9.08 kg)
HB/570
HB/680
Blanket heater in cover. Allows operation to -50°F (-46°C). 75
watts total. 120 VAC, 50/60 HZ.
Blanket heater in cover. Allows operation to -50°F (-46°C). 75
watts total. 120 VAC, 50/60 HZ.
Pelco Manual C325SM (3/99)
5
3.0 MAINTENANCE
3.1 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.
3.1.1 Tightening Drive Chains
Check the pan and tilt drive chains for tension. A movement of 1/32 of an inch to 3/32
of an inch in the chains is acceptable. If the movement of a chain exceeds 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.
3.1.2 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 ca-
pable 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 sprockets (refer to
Figure 1).
2. Operate the pan and tilt motors to spread the grease across the parts.
Figure 1. Servicing the Pan/Tilt
6
Pelco Manual C325SM (3/99)
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 2.
3.2 RESETTING POTENTIOMETERS
IMPORTANT: Be very careful
when resetting potentiometer
switches. Be sure that the pan/tilt
has been centered between maxi-
mum pan and tilt travel, regardless
of the adjustable limit stops. Fail-
ure to observe caution when reset-
ting potentiometers could result in
damage to the preset positioning
ability of the pan/tilt.
Models with Preset Positioning (PP)
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.
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 potenti-
ometer to BREAK.
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 poten-
tiometer half the number of turns the other way to reach the center.
3. Replace the potentiometer gear.
4. Perform steps 2 and 3 for the other potentiometer.
➛
➛
Figure 2. Sealant Locations
Pelco Manual C325SM (3/99)
7
4.0 EXPLODED ASSEMBLY DIAGRAMS
Figure 3. PT550P Series Exploded Assembly Diagram
8
Pelco Manual C325SM (3/99)
Table A. PT550P Series Parts List
Item
Qty
Description
Part Number
1
2
3
4
5
6
7
8
1
4
2
4
2
1
1
2
1
1
1
1
1
1
1
1
1
1
2
1
1
2
2
2
2
1
2
2
2
2
2
2
1
2
1
3
1
1
2
4
2
2
2
4
4
2
2
2
2
2
1
6
1
10
8
Gasket Conn PT1000L-1
Ring, Snap #Q2-18
Pin Dowel 1/8" x 5/8" Hardened Steel
Gasket 1/8" x 1/2" #G207N x Feet
Pin Dowel 1/8" x 1/2" Hardened Steel
Body assembly
Tilt shaft assembly
Bracket, PC board filter
Tilt table
Cover
Pull up bar
Gear, tilt
Hub tilt gear
Plate backup, tilt gear
Spacer, body sides
Gear, pan
Pin, pan limit
Pin, tilt limit
Tilt limit stop
Bracket, pan limit
Bracket, tilt limit
Cover plate, tilt shaft
Bearing, ball, 5/16 dia.
Bearing
Motor, gearhead, 115 VDC
Pin, #3 Taper x 1 1/4"
Chain motor assembly
Sprocket
Screw, worm shaft thrust adjust
Sprocket
Plate, motor
Shaft, worm gear
Locknut, No. 5
Bearing, pan spindle
Spindle, base assembly
Limit stop, pan
Gear, tilt
Gear, pan
Bearing, cage only
Bearing, washer only
Bearing
Grommet, neoprene
PC Board pan/tilt filter
Switch
105010010
15510000
15510001
15510002
15510003
1551008COMP
1551009COMP
1554000COMP
1554037COMP
1554041COMP
1554042COMP
1554044COMP
1554045COMP
1554046COMP
1554047COMP
1554048COMP
1554049COMP
1554049TCOMP
1554050COMP
1554051COMP
1554052COMP
1554053COMP
1556000
1556004
1558004A
17510001
1751002COMP
17512004
1754005COMP
1754022COMP
1754062COMP
1754063COMP
2504012COMP
2506000
5501021COMP
58010006
7712006
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
7712007
776001
776002
776003
GRO2172N
PCB5500126B
SWI1SM1
Switch actuator with insulator
Bracket, AZL pot (PT550P/PP only)
Gear, PP pot shaft (PT550P/PP only)
Sprocket, motor (PT550P/PP only)
Gear (PT550P/PP only)
Pot, Model 534, 5K ohm
Bolt, 1/4 - 20 x 5/8" hex cad
Set screw, 10-32 x 5/16" soc knur black
Set screw, 10-32 x 5/16" soc knur black
Washer, flat #10
SWIJS138B
1754000COMP
1754003COMP
1754004COMP
1754006COMP
POT005.0K10534
ZH1/420X.625CH
ZH10-32X.187S
10-32X.312S
ZH204X436X60
ZH2-56X.500SPP
Screw, 2.56 x 1/2" pan phil SS
Not Used
1
4
4
2
4
Washer, flat 3/16" VSS SPL - size plt D
Screw 4-40 x 3/8" pan phil SS
Screw 4-40 x 3/8" pan phil SS
Washer, flat 1/2 AN - 960-816
Screw, 6-32 x 1/4" pan phil SS
ZH260X562X65C
ZH4-40X.250SPP
ZH4-40X.375SPP
ZH515X.875X62
ZH6-32X.250SPP
Continued on next page
Pelco Manual C325SM (3/99)
9
Table A. PT550P Series Parts List (continued)
Item
Qty
Description
Part Number
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
3
3
2
4
4
4
4
3
12
2
3
3
3
3
15
2
2
Screw, 6-32 x 3/8" soc cad
Screw, 6-32 x 3/8" pan slot SS
Screw, 6-32 x 5/8" flat slot SS
Set screw, 6-32 x 3/4" SS
Nut, 6-32 a corn brass chrome
Nut, hex 6-32 SS
Washer, internal star #6 SS
Washer, split lock #6 SS
Screw, 8-32 x 1/2" soc cad
Screw, 8-32 x 1/2" pan slot SS
Screw, 8-32 x 5/8" soc cad
Screw, 8-32 x 3/4" pan slot SS
Nut, Hex 8-32 SS
ZH6-32X.375CS
ZH6-32 X.375SPS
ZH6-32X.625SFS
ZH6-32X.750SS
ZH6-32XNUTCA
ZH6-32XNUTSH
ZH6LWSIS
ZH6LWSSL
ZH8-32X.500CS
ZH8-32X.500SPS
ZH8-32X.625CS
ZH8-32X.750SPS
ZH8-32XNUTSH
ZH8LWSIS
ZH8LWSSL
ZHPIN3/32X1/2R
ZHPIN3/32X3/8R
Washer, internal #8" SS
Washer, split lock #8" SS
Pin, roll 3/32 x 1/2"
Pin, roll 3/32 x 3/8"
10
Pelco Manual C325SM (3/99)
Figure 4. PT570P/PT570-24P Series Exploded Assembly Diagram
Pelco Manual C325SM (3/99)
11
Table B. PT570P/PT570-24P Series Mechanical Parts List
Item
Qty
Description
Part Number
1
2
3
4
5
6
7
8
4
4
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
2
1
2
1
1
1
1
1
1
4
4
1
1
2
2
1
2
2
2
2
2
2
Ring, snap
15510000
EH550010030
15510003
1554038COMP
1554039COMP
1554055COMP
1551009COMP
15510001
1554144COMP
6804049COMP
1554046COMP
1554037COMP
1554041COMP
1554042COMP
1554047COMP
1554049COMP
1554049TCOMP
1554050COMP
1554053COMP
1554054ACOMP
1556004
NP Gasket, Poron 1/8" x 1/2", Blk, x ft
Pin, dowel 1/8" x 1/2", hardened steel
Plate, side tilt
Plate, side pan
Bottom plate
Tilt shaft assembly
Pin, dowel 1/8" x 5/8", hardened steel
Gear tilt
Hub tilt gear
Plate, backup tilt gear
Tilt table
Cover
Pull up bar
Spacer, body sides
Pin, pan limit
Pin, tilt limit
Tilt limit stop
Cover plate, tilt shaft
Spindle
Bearing
Gasket
Flange
Pin #3, taper x 1-1/4"
Spring, tilt
Bracket, pan limit
Bracket, tilt limit
Switch
Switch actuator with insulator
Term strip, 9 pin (not shown)
Bracket, spring
Bearing, #B46-2
Chain assembly
Collar, spring
Sprocket
Sprocket
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
105010010
PM102A4196COMP
17510001
17510040
1554051COMP
1554052COMP
SWI1SM1
SWIJS138B
TRS2009
1754061COMP
5806005
1751002COMP
1754020COMP
17512004
1754022COMP
1751062WA
1754064COMP
1758006
1758005
5708007
7712006
776001
776002
PT250010005
1554048COMP
7712007
25010002
2506000
Motor plate
Shaft gear train
Motor, gear head
Motor only, 120 VAC
Motor only, 24 VAC
Worm tilt
Bearing, cage only
Bearing, washer only
Bushing, 1/4" tilt shaft
Gear pan
Worm pan
Nut spindle
Bearing, pan spindle
Limit stop, pan
Cap, 60MF 200V Ax Bulk (not shown)
Conn, 9 Pos Recp (not shown)
Conn, CPC Pin Crimp (not shown)
Grommet, neoprene
Bracket, AZL pot
Gear, PP pot shaft
Sprocket, motor, PP
Gear, PP
41
42
43
44
45
46
47
49
52
54
55
56
57
60
61
62
63
64
1
4
4
2
1
1
1
2
3
2
1
9
2
2
2
2
2
2
58010006
CAPU0060.0/200N
CON206705-1
CON66103-2
GRO2172N
1754000COMP
1754003COMP
1754004COMP
1754006COMP
POT005.0K10534
Pot, 5K ohm
12
Pelco Manual C325SM (3/99)
Table C. PT570P/PT570-24P Series Hardware List
Item
Qty
Description
Part Number
A
B
C
D
E
4
4
10
4
4
4
Nut, 6-32, acorn brass chrome
Screw, 8-32 x 1/2", soc cad
Washer, split lock, #8
Set screw, 6-32 x 3/4", SS
Nut, hex 6-32, SS
ZH6-32NUTCA
ZH8-32X.500CS
ZH8LWSSL
ZH6-32X.750SS
ZH6-32NUTSH
ZH6LWSIS
F
Washer, internal star, #6
G
H
I
K
L
M
N
O
P
Q
R
S
2
10
2
1
1
3
3
5
1
1
6
3
3
Screw, 6-32 x 1/2", pan phil, SS
Washer, flat, #10, AN960C-10X064SS
Washer, flat, 1/2 AN960-816 cad
Washer, split lock, 1/4", SS
Bolt, 1/4 - 20 x 5/8", hex cad
Screw, 8-32 x 5/8", soc cad
Screw, 6-32 x 3/8", soc cad
Washer, internal star, #8, SS
Washer, flat 3/16", VSS
Washer, internal star 1/4", SS
Nut, hex, 8-32, SS
Screw, 8-32 x 3/4", pan phil, SS
Washer, split lock, #6, SS
ZH8-32X.500SPP
ZH204X436X60C
ZH515X875X62
ZH1/4LWSSL
ZH1/420X.625CH
ZH8-32X.625CS
ZH6-32X.375CS
ZH8LWSIS
ZH260X562X65C
ZH1/4LWSIS
ZH8-32NUTSH
ZH8-32X.750SPP
ZH6LWSSL
T
U
V
W
X
Y
9
10
2
8
4
6
1
4
2
Washer, split lock, #10, SS
Screw, 10-32 x 1/2", soc cad
Screw, 6-32 x 3/4", flat slot, SS
Screw, 2.56 x 7/16", pan phil, SS
Screw, 4-40 x 3/8", pan phil, SS
Bolt, 1/4-20 x 3/4", flat slot, SS
Pin, spring roll, 3/32" x 3/8"
Washer, internal star, #4, SS
Screw, 6-32 x 3/8", pan phil, SS
Set screw, 6-32 x 3/16", soc, knurl blk
Screw, 4-40 x 3/8", pan phil, SS
Screw, 8-32 x 2 1/4", round slot
ZH10LWSSL
ZH10-32X.500CS
ZH6-32X.750SFS
ZH2-56X.437SPP
ZH4-40X.375SPP
ZH1/420X.750SFS
ZHPIN3/32X3/8R
ZH4LWSIS
ZH6-32X.375SPP
ZH6-32X.187S
ZH4-40X.375SPP
ZH8-32X2.25CRC
Z
AA
BB
CC
DD
EE
FF
1
4
3
Pelco Manual C325SM (3/99)
13
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