Fuse Ratings; Alarm Inputs; Layout Of Mic Power Supply Units (Psus) - Bosch MIC440 Operation Manual

MIC440 Explosion-protected Camera
11.3

Fuse Ratings

The MIC PSUs for MIC440 cameras have four (4) off 20 mm fuses (numbers 13 - 16 in the
figure "Layout of MIC-240PSU-2 and MIC-115PSU-2") 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 MIC-240PSU-2 and MIC-115PSU-2 power supplies. Note: FS
4 does not exist.
Fuse Fuse Function
ID
FS 1 MIC camera
protection
FS 2 Primary protection
FS 3 Heater protection 1
FS 5 Heater protection 2
11.4

Alarm Inputs

The table below identifies the number of alarm inputs and outputs available in MIC power
supply units, depending on whether or not an 8-input alarm card is installed.
MIC-24PSU-2,
MIC-115PSU-2,
MIC-240PSU-2
Table 11.1: Number of alarm inputs and outputs in MIC PSUs
11.5

Layout of MIC Power Supply Units (PSUs)

Layout of MIC-240PSU-2 and MIC-115PSU-2
The figure below displays the layout of the PCB in the MIC PSUs for non-IR cameras, with call-
out numbers to the side of or below the connection/terminal ID or the terminal, and 'on' the
fuses. The table below the figure identifies the connections.
Bosch Security Systems, Inc.
Type Rating for 240 V
Primary
Glass 1.6 A anti-surge (T)
Glass 200 mA quick blow
Glass 1.6 A anti-surge (T)
Glass 1.6 A anti-surge (T)
MIC PSU 8-input Alarm Card
(MIC-ALM)?
Operation Manual
Install the MIC Power Supply Unit (PSU) | en
Rating for 115 V
Primary
1.6 A anti-surge (T)
500 mA quick blow
1.6 A anti-surge (T)
1.6 A anti-surge (T)
Number of
Alarm Inputs
No
Yes
Rating for 24 V
Primary
1.6 A anti-surge (T)
2.5 A quick blow
1.6 A anti-surge (T)
1.6 A anti-surge (T)
Number of
Alarm Outputs
1 0
8 2
31
2013.11 | 8.1 |