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10
en | Installation
2.2
Earth Link on the PCB
The printed circuit board (PCB) of each MIC PSU (IR and non-IR) has one Earth Link option,
near terminal block HD1, to allow the PSU to be set up for different earthing schemes:
–
–
2.3
Fuse Ratings
Non-IR MIC power supplies (MIC-240PSU-2, MIC-115PSU-2 and the MIC-24PSU-2) have four
(4) off 20 mm fuses (numbers 13 - 16 in Figure 2.1) in fuse holders. The ratings for these fuses
are fixed on the low voltage secondary side but change with input voltage on the high voltage
primary side. The following table shows the fuse values that should be fitted to provide
proper protection for the power supplies. Note: Fuse FS4 does not exist.
Fuse
ID
FS1 MIC camera protection Glass
FS2
FS3
FS5
MIC IR power supplies (MIC-IR-240PSU-UL, MIC-IR-115PSU-UL, and MIC-IR-24PSU-UL) have
five (5) 20 mm fuses (highlighted in blue in Figure 2.2). The following table shows the fuse
values that should be fitted to provide proper protection for the power supplies.
Fuse
ID
FS1 MIC camera protection Glass 1.6 A quick blow
FS2
FS3
FS4
FS5 MIC camera protection Glass 1.6 A quick blow
CAUTION!
Replace only with the same type and rating of fuse for continued protection against the risk of
fire, damage or injury. Fitting fuses other than those described above invalidates the product
warranty and may result in damage to the product or injury to the installer.
F.01U.265.804 | 1.3 | 2012.03
If there is a separate connection between video screen and earth, the Earth Link should
be broken. This usually occurs on copper-connected systems where all of the copper
video coaxes are taken back to the control room to be connected to a central earth point.
If fiber optics or other indirect connections are used to get data and video to and from
the control room, then the Earth Link should be left intact, as long as it is the only
camera-end earth reference point.
Fuse Function
Primary protection
Heater protection 1
Heater protection 2
Fuse Function
Primary protection
IR lamps
washer drive
Installation Manual
Type Ratings for 240 V
Primary
1.6 A
anti-surge (T)
Glass 200 mA quick blow 500 mA quick blow 2.5 A quick blow
Glass
1.6 A
anti-surge (T)
Glass
1.6 A
anti-surge (T)
Type Ratings for 240 V
Primary
Glass 600 mA quick blow 1.0 A quick blow 2.5 A quick blow
Glass 2.5 A quick blow
Glass 2.5 A quick blow
MIC PSU Standard
Ratings for 115 V
Ratings for 24 V
Primary
1.6 A glass
1.6 A glass
anti-surge (T)
anti-surge (T)
1.6 A glass
1.6 A glass
anti-surge (T)
anti-surge (T)
1.6 A glass
1.6 A glass
anti-surge (T)
anti-surge (T)
Ratings for 115 V
Ratings for 24 V
Primary
Primary
1.6 A quick blow 1.6 A quick blow
2.5 A quick blow 2.5 A quick blow
2.5 A quick blow 2.5 A quick blow
1.6 A quick blow 1.6 A quick blow
Bosch Security Systems, Inc.
Primary
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