Application Notes

DVC Application Notes

DVC controller goes into programming mode when powered up

The DVC controller is in programming mode when its MS and NS LEDs blink green in an alternating pattern. When the controller is in normal execution mode the MS and NS LEDs will be solid green, red or not illuminated.

The DVC controller normally goes into programming mode when the Program Loader Monitor running on your PC is active, the serial RS232 cable is connected between the PC and the DVC controller, you are attempting to load an application and the DVC is powered cycled. The DVC, when it is powered cycled looks at the RS232 lines (RTS specifically) to decide if it should go into programming or normal execution mode. On some PCs depending on the installed RS232 driver and the last program to access the serial port the RTS line can be left in a state where the DVC believes it should go into Programming mode even though the Program Loader Monitor is not running.

Controller not responding, Can't program

This procedure should be used to regain use of a DVC Master Module (DVC10, DVC7 or DVC5) if the module Flash Memory becomes corrupt due to a power interruption during a BIOS/Application Program download or any other reason. The presenting symptoms include a module that will not communicate with a PC or other modules on the buss and the Module Status (MS) and Node Status (NS) indicators are flashing green alternately at a one second interval.

There are two procedures as a guide to regaining control of a DVC Master Module. The procedures are for BIOS / Program Loader Monitor 4.0 and BIOS / Program Loader Monitor 4.2 and higher.

DVC Family Program Variables Quick Reference Guide

The information in this guide is designed to allow you to find the correct variable with correct syntax and use it effectively within your application code. Some of these variables are commonly known while others were available but not obvious to the user until now, and our field application engineers ( FAE’s ) have also guided engineering to add and clarify variables that were unavailable before.

SAE J1939 CANbus Overview

● SAE J1939 Overview

● HCT code examples for DVC7, DVC10 and DVC80

● Information Sources

DVC 7 & Sauer Series 90 Pumps

3 - Position (FNR) Electric Control

Electric Displacement Control (EDC)

NON FEEDBACK PROPORTIONAL ELECTRIC CONTROL (NFPE)

ELECTRIC PUMP CONTROL Response Time

Driving PVG Type Valves using a DVC10 with “D” Type Outputs (e.g. DVC10-DDD)

This application note is intended to provide wiring, use and programming information to Programmers and System Engineers using a DVC10 with a “D” type output (e.g. DVC10-DDD) to control a PVG type valve.

Driving PVG Type Valves using a DVC10 without “D” Type Outputs (e.g. DVC10-KKK)

This application note is intended to provide wiring, use and programming information to Programmers and System Engineers using a DVC10 without a “D” type output (e.g. DVC10-KKK) to control a PVG type valve.

Technical Note Number: DVC-xx-Tech Note-1

Description: Signal ‘crosstalk’ between universal inputs on the DVC modules reported by user

Background: Driving the DVC series Universal Inputs 1 and 2 at voltages above 5.0 Volts with respect to Ground may cause signal crosstalk between both UNI_1 and UNI_2 inputs and unexpected operational results at the outputs.

For example, if UNI_1 were set up as a RPM Pulse Input and UNI_2 was set up as an Analog Voltage Input, and if the Pulses from the RPM sensor were greater than 5.0 volts, the pulse data may also be seen/superimposed on the UNI_2 input.

Technical Note Number: DVC 7-Tech Note-2

Description: Connection of PNP or NPN sensors to the digital or Universal inputs.

Background: Ensuring correct connection and health of DVC7 or DVC10 inputs and sensor outputs.

Need to convert 0 to 10V to the 0 to 5V for the DVC7?

The Universal input for the DVC7 has 0 to 20mA, 0 to 5 VDC or Pulse, but not 0 to 10 VDC. You need to convert your 0 to 10 VDC to 0 to 5 VDC with the circuit in this Tech Note.