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ABC-170CE
LIMITS
MODE
STATUS
PROTECTED REMOTE OPERATION
2.1.3 Communication between AC Inverter and DC Converter
The AC Inverter and DC Converter communicate over an RS-485
high-speed multiplexed data bus. The communication bus does not intend
to be accessed by the user at any time. The AC Inverter sends
information about its status and mode of operation to the DC Converter.
The DC Converter sends fault status information and communicates to
the Remote Operation System (ROS) via an RS232 link.
2.1.4 Remote Operation Interface
The Remote Operation Interface, based on the RS-232 communication
standard, allows communication between the DC Converter and the
ABC-170CE (ROS). The purpose of this interface is to provide status
information and DC input/output measurements from the ABC-170CE to
29730-03-04
(yellow) is used to set upper and lower operating limits for
each converter. The user presses either the UPPER or the
LOWER button to view the existing limits and holds the
button down while pressing the Up arrow and Down arrow
buttons to adjust those limits.
Upper and lower limit buttons are included for each
converter (A and B). When these buttons are flashing, the
DC Converter is prompting the user to check the operating
limits and adjust them if necessary.
A mode determines what control algorithm a converter will
use. The choices are VOLTAGE, CURRENT, POWER
control (green), or STANDBY (red).
When all four of these buttons on one converter (A or B)
are flashing, the DC Converter is prompting the user to
choose a mode. When a mode has been selected, only the
appropriate button will be lit (not flashing) for that
converter. Another mode button may also be flashing at
the same time if the DC Converter is at an operating limit
for one of the parameters that is not
being controlled.
Each channel will display (remote) status independently
(Remote A and Remote B). When operating remotely, the
REMOTE button will be lit for that channel. When the
system is initially powered up, it begins in local operation.
While operating in Remote mode, the operator can change
the status of the ABC-170CE to standby by pushing the
Standby button. This action will cause the output contactor
to open, isolating the output of the respected channel from
the load. To re-initiate Remote mode operation, the
operator must manually push the flashing Remote A/B
button, which will resume operation under ROS control.
Page 18 of 61
Installation, Operation, and Maintenance
Webasto Charging Systems, Inc.
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