Powell AP.CBM.01 EIM, Руководство пользователя

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6 Equipment Description
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Circuit Breaker Monitor
01.4IB.48070A
Ch 3 Equipment Description
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The Circuit Breaker Monitoring System
(Figure 4) is comprised of three main modules:
1) Circuit Breaker Monitor (CBM)
The CBM (Figure 1) is an industrial
multi-channel Data Acquisition Module.
It provides four (4) analog and two (2)
digital input channels, pre-configured and
dedicated to the connected devices. The
module is ruggedized and designed to
withstand shock, vibration (IEC 60068-2-
6), temperature extremes (-40°C to +70°C)
and relative humidity (5 to 95%). The
module is designed to be embedded within
the control housing of a circuit breaker,
adjacent to the devices it monitors. The
module is dedicated to monitoring the
standard electromechanical devices which
provide the major functions of charging,
closing and tripping of a spring operated
circuit breaker mechanism as well as the
contacts which indicate circuit breaker
state and spring charge state. The circuit
board, battery and housing are designed
to last for approximately 25 years when
operated within the specified vibration,
shock, temperature and relative humidity.
With the onboard memory and embedded
processing, signal data is analyzed for
circuit breaker performance profile and
compared to required performance values
for basic alarm function. The performance
values and raw analog curves for up to 1000
operations are retained in a battery
backed-up memory. The data
communications from the CBM is via a built
in IR transceiver.
Figure 1 Circuit Breaker Monitor (CBM)
2) Infrared Interface Module (IRIM )
The IRIM (Figure 2) is an infrared to RS-485
Modbus transceiver mounted inside the
circuit breaker compartment. It is placed
such that the Circuit Breaker Monitor
infrared transceiver can communicate
its data to the IRIM. The IRIM permits
multipoint two (2) wire RS-485 Modbus
connection to additional IRIM units.
Modbus and power connections for this
unit are via an 8-pin Phoenix connector.
Additionally, the IRIM has an RJ-45 (8P8C)
connector for cable connections to the
External Indication Module (EIM).
Figure 2 Infrared Interface Module (IRIM)