DVT Tutorial.pdf

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Using DVT with Gen4 Systems
Introduction:
The DVT software can be installed on a PC to allow engineers and service technician’s access to
adjustments and allows them to monitor status of a Sevcon Gen4 motor controllers. This document
covers some DVT basics.
Requirements:
-
-
IXXAT Model
- 1.01.0087.10200 (w/galvanic isolation)
USB to CAN adapter, Sevcon part #
661/30132.
CD with DVT software, provided by Sevcon.
Starting DVT:
Click and Start DVT. The Screen will appear as shown below.
1
Scrolling Text Showing
CAN Bus Traffic.
Press for Helper
Screen.
If Not Seeing CAN Traffic
Select Other Baud Rates
Until Traffic Starts.
Type in flts and Press Enter, to Show
Active Faults.
If not seeing CAN Bus Traffic after trying other Baud Rates, check connections between IXXAT and
Computer. Also check connections between Gen4 and IXXAT, recycle power on controller and
restart DVT.
DVT Helper Screen
:
The DVT helper screen is where setting changes are made and controller status is monitored.
Press to Get Controller Information and
Show Controller SW & HW Version.
2
Press to Show Active
Fault Info.
CAN Node. For
single standalone
Gen4 Controller ,
select 1 .
Press Go Preoperational Before
Making Setting Changes.
Press Go Operational When
Done Making Setting Changes.
The Go Preoperational mode disables the controller so that the motor will not run while adjustments
are being made. When selecting Go Preoperational Mode, you will hear the line contactor drop out.
The Go Operational mode must be selected after settings changes are made and confirmed. The
controller will not run the motor until Go Operational is selected. When Go Operational mode is
selected you should hear the line contactor close.
3
Making adjustments:
Keep in mind that you must press “Go Preoperational” before making settings changes.
Reducing Maximum Motor Speed.
Select Tree Tab for
Settings List.
Select Profiles , Then
Select “Baseline Profile”.
Max Forward
Motor Speed.
Max Reverse
Motor Speed.
Once Settings are Changed
Press Load Values.
Keep in mind that raising these max speeds higher than the rated maximum speed of the motor will
cause some undesired results.
Once settings are changed, click the “Load Values” button.
You must press “Go Operational” after making settings changes.
Controller Will Not Run In Preoperational Mode.
4
Contactor Setup Adjustments.
The contactor setup allows you to set the line contactor pull in voltage and holding voltage. This
would also allow you to us a 24 Volt Line contactor on a 72 Volt system or at any system voltage.
Select Tree Tab for
Settings List.
Select Configuration / Contactor Setup /
Voltages to Access Contactor Voltage
Settings.
Once Settings are Changed
Press Load Values.
Once settings are changed, click the “Load Values” button.
You must press “Go Operational” after making settings changes.
Controller Will Not Run In Preoperational Mode.
5

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