IC 3050349, Руководство пользователя

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IC Electrical Load Manager 3050349
User Manual
Page 6 of 21
Rev 1
2. Operation
2.1 Sequencing
Electrical loads will turn on sequentially in priority order from 1 to 8 when their respective logic switch,
either ignition or master warning, is activated and the vehicle is operating in the selected mode, either
response and/or scene. Loads sequence off in reverse order. Priority zero loads sequence on and off but
will never shed.
2.2 Shedding
The shed point is the voltage that will cause a load to be turned off if the system voltage drops to this
point. The unshed point is the voltage that must be achieved before a load is turned back on once it has
been shed.
Electrical loads will be turned off when the system voltage drops to the shed point for a minimum of 1
minute. The delay prevents load shedding due to momentary system power loading such as high current
transient. Once shed, loads will remain off for a minimum of 5 minutes and until the unshed voltage is
achieved for a minimum of 1 minute. Loads will only shed if the Parking Brake is set and the Load
Manage Enable input is active.
2.3 Shed and Unshed Voltage Thresholds
The shed and unshed voltage thresholds for each load output are determined by the Priority number
setting, one through eight, as detailed in the table below:
Priority Level 12V System Shed 12V System
Unshed 24V System Shed 24V System
Unshed
Level 0 Never Shed Not Applicable Never Shed Not Applicable
Level 1 11.0 VDC 11.4 VDC 22.0 VDC 22.8 VDC
Level 2 11.4 VDC 11.6 VDC 22.8 VDC 23.6 VDC
Level 3 11.8 VDC 12.0 VDC 23.6 VDC 24.0 VDC
Level 4 12.0 VDC 12.2 VDC 24.0 VDC 24.4 VDC
Level 5 12.2 VDC 12.4 VDC 24.4 VDC 24.8 VDC
Level 6 12.4 VDC 12.6 VDC 24.8 VDC 25.2 VDC
Level 7 12.6 VDC 12.8 VDC 25.2 VDC 25.6 VDC
Level 8 12.7 VDC 13.0 VDC 25.4 VDC 26.0 VDC
2.4 Fast Idle
The Fast Idle output is activated whenever the system voltage is reduced to 12.8 VDC for at least one
minute. The fast idle output will remain ON for a minimum of 10 minutes and until 13.0 VDC is achieved.
The Fast Idle output is dependent on the Parking Brake and Load Manage Enable Inputs. The polarity of
the Fast Idle output can be configured for active high or low from the front panel programming menu.
The Fast Idle output should only be used as part of a Fast Idle control system when the proper safety
interlocks are present.