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ABC-170
Installation, Operation & Maintenance
2.1.3 Communication Between AC Inverter and DC Converter
The AC Inverter and DC Converter communicate over a RS-485 high-speed multiplexed
data bus. The communication bus is 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-170 Remote Operating
Sysytem (ROS). The purpose of this interface is to provide status information and DC
output measurements from the ABC-170 to the ROS and to accept commands from the
ROS. For more information about the Remote Operation Interface, please refer to the
Remote Operation System Manual, Webasto document number 06631-03.
2.1.5 ABC-170 Remote Operation System (ROS)
The ABC-170 ROS is a personal computer based system for controlling the ABC-170.
The system consists of the computer itself and any peripherals, and the ABC-170 ROS
application.
This software provides a graphical user interface for controlling and monitoring the
operation of the ABC-170, a command language interpreter that allows for simple
implementation of complex test programs, communication with the ABC-170 system,
and the option of integrating external data acquisition devices into the system.
2.1.6 High Voltage Interlock (Front Panel)
Each channel of the ABC-170 has a High Voltage Interlock Switch (HVIS) for added
protection (Figure 4). The HVIS can put one channel of the ABC-170 into the STANDBY
mode without affecting the other channel.
Pin 1 (+V) is a system supplied +5 voltage source that is to be connected to Pin 2
(+sense). The Pin 3 (-sense) has to be connected to the Pin 4 (Gnd) signal, which is the
ground. A break in either one of these links will put the associated channel into the
STANDBY mode (open the output contactor and isolate the output of the ABC-170 from
the load). (See appendix V for proper wiring.)
NOTE: If this feature is not used, then it is necessary to have mating connectors with
jumper wires installed (see Appendix V) for the system to operate properly.
2.1.7 Remote Voltage Sense (RVS)
To increase voltage accuracy at the Load, activate the Remote Voltage Sense. This
feature shall be activated via ROS by pressing the button labeled RVS on the top left
side of the screen, or by pressing the RVS button on the front panel (RVS cable must
also be in place for both channels). The RVS feature can be used in voltage mode as
well as power mode (Figure 2.4). (See Appendix III for proper wiring and use of this
feature.)
11780-03-E
Page 16 of 52
Webasto Charging Systems, Inc.
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