Precision Engineered Opto-Electronics™
Explosion Protected Camera
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep this instruction.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with manufacturer instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the power where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in a way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
Please read this Instruction Booklet prior to installing the
EX72N Explosion Protected Camera.
CSA Certified / UL Listed CLASS 2 power adaptors must be used in order to comply with electrical safety standards.
Bosch Security Systems, Inc. will not be responsible for injuries or damages resulting from the improper installation or use of any product sold by
Bosch Security Systems, Inc their agents, distributors or dealers.
EU Directives covered by this declaration:
72/9/EC Low Voltage Directives
89/336/EEC Electromagnetic Compatibility Directive
Class 2 circuits shall be supplied from a Class 2 transformer, or a) A Class 2 power supply or device or b) Where the voltage does not exceed 20 volts, a 5 ampere
(maximum) mini circuit breaker or a 5 ampere noninterchangeable fuse.
Optional EXPS.001 Class 2 power supply is available from Bosch Security
Certifications / Compliance:
Class: 2258 02
Process Control Equipment – For
Process Control Equipment – For
Hazardous Locations – Certified to US
Safety: Class I, Div 1, 2, Groups B,C,D
Class II, Div 1, 2, Groups E,F,G
T6 Temperature Code
Environmental: CSA / NEMA TYPE 4X
NOTE: This equipment has been tested and found to comply with the limits for a digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. As part of its’ normal operation this device can generate radio frequency energy and if not installed and used in accordance with the installation manual may cause interference to radio communications. However, there is no guarantee that interference will not occur on a particular installation. If the device does cause interference to radio or television reception the user is encouraged to try to correct the interference by one or more of the following measures:
1) Fit Ferrite beads on all cable to and from the power
supply box, within the box walls.
2) Route the composite cable between the camera and the power supply in steel conduit piping over the entire run of the cable up to and including connection to a deep conduit base fitted under the camera and a conduit fitting adaptor in the wall of the PSU box.
3) Contact BOSCH Service Center for further advice.
INDEX – EX72N
Items Required for Installation.....................2
Mechanical Specifications ...........................3
Initial Preparations .......................................6
Section 1. Mounting – Camera Housing......7
Section 2. Voltage Input Connections .......11
Section 3. Camera Alignment....................12
Section 4. Camera Adjustments ................17
Section 4. Troubleshooting Guide .............21
Section 5. General Specifications..............24
The EX72N Explosion Protected Camera has been designed for surveillance applications in hazardous areas. The camera’s ATEX-rated housing consists of a heavy-duty aluminum casting with a chemical resistant viewing window. The housing is also NEMA rated for watertight use.
EX72N contains the dual board Vari-Focal
Auto-Iris lens camera. A voltage regulator circuit allows for 12V dc or 24V ac operation, as well as a range in between. It also provides protection from voltage surge, transient spikes, and reversed voltage.
Care should be taken when unpacking the shipped unit. Check the parts list and confirm all items have been located. Inspect the equipment thoroughly to ensure nothing was damaged in transit.
Contact BOSCH Service Center if a problem is noted, see the rear page of this booklet for contact numbers.
(items supplied with unit)
• EX72N Camera
• M3 Allen key
• Installation Instructions booklet
ITEMS REQUIRED FOR INSTALLATION
(not supplied with unit)
• mounting hardware & tools
• electrical splices and crimps
• small slotted screwdriver
• Optional mounting bracket (see this booklet for information)
Bracket and Hardware
INPUT/OUTPUT CABLES/COVER REMOVAL
Power Input Cable
Video Output BNC
• The camera’s voltage regulator board
(VRB) accepts an input voltage of either
dc or 24V ac, and a range in-between,
from a regulated power supply.
• The VRB automatically switches between
ac or dc inputs, therefore no internal wiring
changes are necessary to accommodate
these input voltages.
• Determine the optimum location for the
Section 1: Mounting-Camera Housing.
• All cameras have been tested prior to
The installation of the EX72N Camera is shown in Sections 1 and 4 listed below.
It is important that these steps are followed in sequence:
1. Mounting – Camera Housing
2. Voltage Input Connections
1. MOUNTING - CAMERA HOUSING
Caution: Install with the appropriate screws or drywall anchors to suit the mounting surface. Select a suitable location that is protected from accidental damage or tampering, and environmental conditions that could exceed the camera’s general specifications.
See page 30.
Caution: Ensure the selected location is protected from falling objects, accidental contact with moving objects, and unintentional interference from personnel.
Follow all applicable building codes.
The following installation guidelines
must be followed:
• Locate the camera such that it cannot be easily interfered with, either intentionally or accidentally.
• Select a mounting surface capable of supporting the combined weight of the camera and its mounting hardware under all expected conditions of vibration and temperature.
• Secure all cabling.
The cover of the EX72 must be removed prior to mounting the camera housing –see the illustration in page 5. The set-screw in the cover must be loose prior to the cover’s removal. Ensure the gasket is not displaced during this procedure. Re-attach the cover after the camera has been mounted.
Shown below is the
optional mounting bracket
BRK-17-0001 and its designated mounting holes.
The attached EX72N camera is not shown for clarity purposes.
Two .75” x .25” oblong mounting holes.
Figure 1 –1
Optional Mounting Bracket--BRK-17-0001
2. VOLTAGE INPUT CONNECTIONS
Connect the input power (
ac or dc) to the camera as shown below.
Note: The camera is an isolated unit. The input power wiring is not polarity dependent.
Figure 2 – 1
Power Input Wiring
Figure 2 – 2
VRB Input / Output Wiring
3. CAMERA ALIGNMENT
The EX72N camera, as supplied, is aligned so that the viewed image is shown in an upright position with the optional mounting bracket attached to the bottom of the housing.
on page 3)
TOP” designation label on the camera module mounting plate indicates the correct upright viewing orientation for the camera lens.
If a particular situation requires the camera to be mounted to a surface other than the designated mounting plane, then the camera module must be removed and the camera’s mounting ring rotated into the new upright viewing position.
TOP” label must always point UP no matter to what angle the mounting bracket and camera housing is positioned.
Figures 3 –1, 3 – 2, 3 – 3, 3 – 4,
4 -1 and 4 - 2 for details.
Remove the three socket screws (
A) with the supplied Allen key and carefully lift out the camera module.
Figure 3 – 1
Dual Board Camera Module
Dual Board Auto Iris, Vari - Focal
Camera, Module Removal
Note the relationship between the “
TOP” position and the threaded mounting hole in the camera’s mounting ring. This hole designates the
UP position of the camera.
“TOP” threaded mounting hole
B) are used for the camera’s mounting ring rotational adjustment.
Figure 3 – 2
Camera Mounting Ring (as shipped)
If the camera housing has to be mounted in a different position, loosen the three set-screws
B) and rotate the camera mounting ring until the
TOP” threaded hole is perpendicular to the new mounting surface.
New Mounting Surface
“TOP” threaded mounting hole
Figure 3 – 3
Camera Mounting Ring – Rotated
After the camera’s mounting ring has been rotated into its new position, tighten the three set-screws with the supplied Allen key.
Carefully place the camera module onto the mounting ring, ensuring that the “
TOP” position lines up with the “TOP” mounting hole. Tighten the three camera plate set-screws, connect the video and power cables, and check the orientation of the image on a monitor.
Figure 3 –4
Figure 3 – 4
Camera Housing in Rotated Position
4. CAMERA ADJUSTMENTS
4.1 Dual Board Camera: Vari Focal and Auto-Iris
Step 4.1.2 - See Figure 4-1 on page 19.
Step 4.1.2 - Loosen the lens set-screws for focus/zoom adjustments.
See Figure 4-2 on page 20.
Step 4.1.3 - The set screw for
is used for image focus.
Step 4.1.4 - The set screw for
is used for telephoto or wide- angle settings.
Step 4.1.5 - Re-tighten the set screws after focus adjustments have been completed.
FIGURE 4 – 1
Lens set screws location
The dual board Vari Focal and Auto-Iris camera may be supplied with the EX72N unit. Use the guide below for focal adjustment.
Loosen this set screw for
Loosen this set screw for focus adjustment
FIGURE 4 – 2
Lens Focus Adjustment
Use a Neutral Density filter or Infra-Red Pass filter to cover the lens during focusing to simulate low light conditions on scene for correct 24-hour focusing.
For camera with vari-focal lens, the camera should be focused with the lens iris fully opened to simulate the worst possible depth of field. Using a Neutral
Density filter or Infra-Red Pass filter will ensure the iris is fully open for correct setup and adjustment.
Note that statement above is applicable only for
Day/Night or IR version cameras.
5. TROUBLESHOOTING - CAMERA
1. Power Supply:
Check the power connections at the power supply:
Both ac and dc voltage inputs are on the same wires.
Check for loose wires or poor connections.
If connected to
“ dc ”, the supply range is:
10.5 – 40V dc.
If connected to
“ ac ”, the supply range is:
12 - 30V ac.
Measure the voltage at the input power connector.
Poor video signal
Noisy power supply
Determine if wiring polarity at the video connector is correct.
If still no video, connect the camera directly to the monitor. Check the video signal. If okay, the problem is with the interconnections.
If still no video, contact BOSCH
Service Center. See rear page of this manual for contact information.
Ensure the video cable is correctly matched and terminated with 75 ohms at each end.
Check if video cables are compatible.
Relocate or replace the power supply.
Horizontal scan lines, rolling up or down
Negative, scrambled, or faded image
Ground looping on video cable
24V ac operation
Check the coax cable shield is not touching ground, e.g. at the couplings.
A video isolator or isolation transformer may be required.
Line Lock adjustment required.
Check the voltage at input power cable.
Must be >10.5V dc or >12V ac.
Check video leads for reversed connections.
6. GENERAL SPECIFICATIONS
Power Consumption: 3.6W (max.) for both
Input Voltage: 10.5 - 40 dc,
Enclosure (housing): Aluminum casting
IP66 / NEMA4X)
Viewing Window: Tempered Glass
H: 5.63” (143mm)
W: 5.43” (138mm)
L: 5.63” (143mm)
Bosch Security Systems, Inc.
850 Greenfield Road
Lancaster, Pennsylvania 17601
Fax +1 585-223-9180
Email: [email protected] www.boschsecurity.us
Europe, Middle East, Africa:
Bosch Security Systems B.V.
P.O. Box 80002
5600 JB Eindhoven,
Phone: + 31 40 2577 284
Fax: +31 40 2577 330 [email protected] www.boschsecurity.com
Bosch Security Systems Pte Ltd
38C Jalan Pemimpin
Phone: +65 6319 3450
Fax: +65 6319 3499 [email protected] www.boschsecurity.com
© Bosch Security Systems, Inc. 2009; Data subject to change without notice.
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