ABB VSN700 Product Manual

ABB VSN700 Product Manual Manual pdf 27 page image

VSN700 Data Logger Product Manual- 27 -4. Check to make sure the RS-485 communication wires are properly connected. Make sure thedata conductors are not swapped. Measure the DC Voltage across D+ and D- at both themonitoring enclosure and at the data terminals of the remote device. If the measurement is 0VDC you have a short in the data wires. If the difference between the two measurements isgreater than 3V DC then you may have an open circuit.5. If all of the previous steps do not help this issue, contact ABB Technical Support.Troubleshooting/Resetting a data loggerConsult this section if you suspect there is a problem with the data logger. Some problems can befixed by rebooting the logger or by restoring the logger to its factory defaults.On the end of the top side of the data logger housing (surface opposite the side with the Ethernetports) are two small recessed buttons and two LEDs. The two buttons can be used to reset thesystem CPU (force a reboot) and to restore the unit to factory defaults. The two LEDs indicate thecurrent status of the unit or the stage of the boot process.Data Logger, Top SideChecking the status LEDs on the logger is the first thing to do when troubleshooting a logger. Asolid orange LED (or no LEDs lit when powered) is an indication that the logger is not runningproperly and may need replacement if the problem persists.Press the Reset button closest to the corner of the data logger to reboot the unit. You need to waituntil the logger is fully rebooted and then check to see if data is being transmitted correctly to see ifthis fixes the problem.If problems persist, you may need to restore the data logger to factory defaults. Follow these stepsto restore the data logger firmware to factory default.1. Reboot the system. Momentarily press the Reset button on the logger or power cycle thelogger.2. Within 5 seconds of resetting or power cycling the logger, hold down Factory Restore buttonuntil both LEDs blink in a synchronized pattern. That is, both blink on and off at the same time.This should occur 15 to 30 seconds after step 1, depending on whether or not the Eth0Ethernet interface is functional. If you cannot see the LEDs clearly, hold down Factory Restorebutton for 30 seconds to be sure.The factory restore removes all user configurations but keeps any firmware upgrades. The portshave to be reconfigured as Modbus or Aurora Protocol if different than factory settings. Deviceshave to be rediscovered and any other configuration information added again. ABB Technicalsupport must also be contacted to have the Aurora Vision credentials reset for that data logger.Factory Restore ButtonReset ButtonGreen LED2Orange LED1