32 en | MIC IR Power Supply Units MIC Series Power Supplies
F.01U.141.598 | 1.0 | 2009.11 Installation Manual Bosch Security Systems, Inc.
4 MIC IR Power Supply Units
Use this chapter to install the following MIC power supply
units:
– MIC-IR-240PSU-UL
– MIC-IR-115PSU-UL
– MIC-IR-24PSU-UL
The power supplies for the MIC Series IR cameras are available
in 230/115 VAC source and 24 VAC source versions.
These power supplies have a second isolated power supply for
driving the IR illuminators. The operation of this power supply is
controlled by the camera itself via telemetry commands
received from the control room. The power supply operates the
twin illuminators using a constant current drive which
automatically configures itself for IR lamp operation. There are
no adjustable items within the power supply except for the
earth link discussed below.
The power supply also provides a circuit for operating a 24 VAC
or VDC washer pump and has four (4) volt-free alarm contact
inputs which activate presets within the camera but always
notifies the control system of the status of these alarms. The
DANGER! ELECTRICAL SHOCK HAZARD
Ensure the power is disconnected prior to opening the power
supply enclosure.
Power must be disconnected before replacing any fuse in the
MIC PSU.
The MIC power supplies have a separate internal shield
covering the power cable input head-end (HD1).
Only suitably qualified persons should remove this shield and
connect the mains power cable, the shield MUST be re-fitted
and fully secured prior to connecting the power.
The mains supply cable shall have conductors of a maximum
size of 12 AWG.
A readily accessible disconnect device (circuit breaker) shall be
incorporated externally to the equipment. The recommended
rating is 15 A.
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