Bosch EX70MNX804-N User manual

Precision Engineered Opto-Electronics™
EX70 / 70N
Explosion Protected Camera
INSTALLATION INSTRUCTION
S

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 non-
interchangeable fuse.
.
IMPORTANT
Please read this Instruction Booklet prior to installing the
EX70 and EX70N Explosion Protected Camera.
WARNING !
ATEX Approved or CSA Certified / UL Listed CLASS 2 power
adaptors must be used in order to comply with electrical safety
standards.
Only qualified personnel shall install any Bosch Security Systems,
Inc. surveillance product. any Bosch Security Systems, Inc. will not
be responsible for injuries or damages resulting from the improper
installation or use of any product sold by any 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
94/9/EC Equipment or Protective System for use in
Potentially Explosive Atmospheres.

Certifications / Compliance:
CSA-NRTL: MC 189936
Class: 2258 02
Process Control Equipment – For
Hazardous Locations
2258 82
Process Control Equipment – For
Hazardous Locations – Certified to US
Standards
Safety: Class I, Div 1, 2, Groups B,C,D
Class II, Div 1, 2, Groups E,F,G
Class III
T6 Temperature Code
Environmental: CSA / NEMA TYPE 4X
DEMKO: 07 ATEX 142765X
II2G Ex d IIc T6
ATEX Category 2 (Gas) equipment designed for
installation in Zone1. Protection by constructional safety
using flame proof enclosure, suitable for Coal Disulphide
environments with maximum equipment surface
temperature of 85°c

INDEX
Page
Description...................................................1
Unpacking....................................................2
Parts List......................................................2
Items Required for Installation.....................2
Initial Preparations.......................................3
Guidelines....................................................3
Section 1. Cover Removal...........................4
Section 2. Input Power Connections ...........6
Section 3. Mounting – Camera Base...........9
Section 4. Camera/LED Adjustments........11
Section 5. Camera Re-Assembly ..............15
Section 6. Troubleshooting, Camera.........20
Section 7. Troubleshooting, LEDs.............23
Section 8. General Specifications..............24

1
DESCRIPTION
The EX70 and EX70N Explosion Protected
Cameras have been designed for surveillance
applications in hazardous areas. Each 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.
The EX70 has been engineered for surveillance
reliability during daylight operation, while the
EX70N offers total surveillance protection during
day and night situations.
A voltage regulator circuit allows for 12V dc or
24V ac operation, and a range in between, also
providing protection from voltage surge,
transient spikes, and reverse voltage.
The EX70 and EX70N cameras are available in
several models designed to meet specific needs.
For additional information and specifications,
please contact your Bosch Security Systems
representative.

2
UNPACKING
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 Security Systems if a problem is
noted. See the rear of the booklet for contact
numbers.
PARTS LIST (items supplied with unit)
•EX70/EX70N Camera
•Installation Instructions booklet
ITEMS REQUIRED FOR INSTALLATION
(not supplied with the shipped unit)
•Long shaft Philips screwdriver
•Regular Philips screwdriver
•Small slotted screwdriver
•Mounting hardware
*Ensure zone conditions are observed and regional
health & Safety regulations are applied.

3
INITIAL PREPARATIONS
•The camera voltage regulator board
(VRB) accepts an input voltage of either
12V 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
camera.
•All cameras have been tested prior to
shipment.
GUIDELINES
The installation of the EX70and EX70N is
explained in Sections 1 to 5 listed below.
It is important that these steps are followed in
sequence:
1. Cover Removal
2. Input Power Connections
3. Mounting - Camera Base
4. Camera / LED Array Adjustments
5. Camera Re-Assembly

4
1. COVER REMOVAL
The camera’s cover must be removed prior to
adjustment for LED brightness or setting the
camera’s lens angle. The set-screw located at
the bottom of the cover casting is not tightened
at the factory and protrudes by 1/8" (3mm) in
order for the cover to be easily rotated.
Make sure the O-Ring gasket at the base of the
threads is not damaged or dislodged during the
cover’s removal process.
Refer to Figure 1 – 1.
Step 1.1 - Place the camera casting assembly
on a flat surface.
Step 1.2 - Firmly hold the base with one hand
and rotate the cover in a counter-
clockwise direction with the other
hand. Do not use a screwdriver or
other metal device during this
procedure.
Step 1.3 - Remove the cover and set it aside in
a safe place.

5
Video Output Cable Power Input Cable
FIGURE 1 – 1
Cover Removal
Cove
r
Set-Scre
w
Camera
and LED
Array
Assembl
y
Camera
Body
Base
Castin
g
O-Ring
Gasket

6
2. INPUT POWER CONNECTIONS
Attention: External Video Cable Systems Must
Be Properly Grounded In Accordance With The
National Electrical Code, ANSI/NFPA 70.
The EX70 and EX70N cameras are pre-
connected with an electrically isolated power
board (VRB) for 24V ac or 12V dc operation,
with no change to the polarity of the wires.
The VRB also connects to the camera and to the
Line Lock Board (if available).
See Figures 2 – 1 and 2 – 2.
NOTE:
For DC input, the input voltage range is
10.5V dc to 40V dc.
The recommended input current from the power
supply should be approximately 1 Amp.
For AC input, the input voltage range is
12V ac to 28V ac.
The recommended input current from the power
supply should be approximately 1 Amp.

7
Figure 2 – 1 shows the VRB used with the EX70
camera.
Figure 2 – 2 shows the VRB used with the
EX70N camera.
Power
IN Power OUT
to
camera
from
supply
FIGURE 2 – 1
12VDC or 24VAC
Electrically Isolated Power Board

8
FIGURE 2 – 2
12V dc or 24V ac
Electrically Isolated Power Board
Camera
Day &
Night
Control
To Camera,
Video Out and
Video Ground
24V ac for
Line-Lock
Power Input
12V dc / 24V ac
(no polarity)
LED
Array
Power
Photocell ON/OFF
Adjustment
To
Photo-
cell

9
3. MOUNTING – CAMERA BASE
Caution: Install with the appropriate screws or drywall
anchors to suit the mounting surface. Select a
suitable location that is protected from accidental
damage, tampering and environmental conditions
which could exceed the camera’s specifications.
See page 24.
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 weight of the camera under all expected
conditions of vibration and temperature.
- Secure all cabling.
Installations on drywall must use two #12 screws and
#12 drywall plugs or a superior mounting method.

10
3. MOUNTING – CAMERA BASE (cont’d.)
FIGURE 3 – 1
Mounting and Dimensional Details
Notes:
1. Cables can also be routed through the hole on the
opposite side of the base.
2. Use the two .30” dia. holes for base mounting.

11
4. CAMERA / LED ADJUSTMENTS
For optimum picture quality, the EX70 camera
lens must be as close as possible to the inside
face of the viewing window, without touching.
However, the foam ring around the lens of the
EX70N should be adjusted to seal against the
inside face of the window, minimizing any side
light interference, but without obstructing the
field of view.
The lens clearance adjustment can be achieved
via the two side screws on the camera bracket.
The complete VRB/camera/LED Array chassis
must be removed from the base housing for this
adjustment. See Figure 4 – 1 for details.
The lens viewing direction can be also slightly
adjusted via the two side screws.
See Figure 4 – 2.
For larger lens viewing angles adjustments it is
recommended that the entire camera housing be
tilted on a separate bracket.
The LEDs on the LED array board can be
adjusted for brightness. See Figure 4 – 3.

12
FIGURE 4 – 1
Camera Removal
This illustration shows the EX70N camera. The
EX70 is similar, but has no LED Array.
Note the relationship between the camera board
alignment and the housing.
Remove the chassis mounting
screws and lift out the assembly

13
FIGURE 4 – 2
Camera Lens Adjustment
For optimum picture quality, the two adjustment
screws, located on either side of the camera
plate, allow the lens to be moved closer to the
viewing window. The lens directional view can
also be slightly adjusted during this procedure.
Adjust the lens foam ring at this time.

14
FIGURE 4 – 3
LED Array Brightness Adjustments
The brightness of the LEDs can be adjusted for
High ( H ), Medium ( M), or Low ( L) intensity
by connecting the jumper block as shown

15
5. CAMERA RE-ASSEMBLY
If changes were necessary due to voltage and
installation requirements, make sure all power
and video wires are correctly connected and
tightened into their terminal blocks.
Step 5.1 - Connect a ¾” NPT gland or conduit
to the open side of the base: Note:
The gland and conduit is not
supplied.
Step 5.2 - Push the external power/video cable
into the housing and connect to the
power and video of the circuit board.
Step 5.3 - Check that the large “O” ring gasket
at bottom of the Camera Base
threads is undamaged.
Step 5.4 - Make sure the “Top” edge of the
VRB/Camera/LED Chassis is
aligned correctly with the Base.
Refer to Figure 5-1 on page 17.

16
Step 5.5 - Mount this Chassis into the Base
Housing, ensuring no cables are
pinched or chafed.
Step 5.6 - Thread the Cover onto the Base,
making sure the Lens and its Foam
Ring are correctly positioned.
Thread the ring on tight and then
tighten the set-screw on the cover.
Refer to Figure 1-1 on page 5.
Step 5.6 - Seal the ¾” NPT entry with silicone
to prevent moisture or water from
entering.