Sices DIPOT User manual

Filename: EAAM024505EN.docx

Rev. 05 Date: 07/05/2013

ID Document: EAAM0245

Product: DIPOT

ii User’s Manual

1. General Information.................................................................................................3

2. Characteristics.........................................................................................................3

2.1 Output...................................................................................................................3

2.2 Power input...........................................................................................................4

2.3 Controls and function............................................................................................4

2.4 Digital inputs.........................................................................................................6

2.5 Analog Inputs........................................................................................................6

2.6 Adjustments..........................................................................................................7

3. Voltage isolator mode .............................................................................................8

4. Connections.............................................................................................................9

4.1 RS485 interface version connections .................................................................10

4.1.1 Modbus addresses and communication protocol .........................................10

4.1.2 ModBus address list.....................................................................................11

4.2 CAN BUS version connection.............................................................................14

4.2.1 CAN BUS communication ............................................................................14

5. Dimensions ............................................................................................................16

User’s Manual 3

This document describes the technical and functional characteristics and how to use the DIPOT board.

The available models are identified by the following codes:

1. E6102094300xx : DIPOT RS485 IN 0÷5V/IN 0÷10V

2. E6102094301xx : DIPOT RS485 IN TEMP./PRESS. VDO

3. E6102094302xx : DIPOT CANBUS IN 0÷5V/IN 0÷10V

4. E6102094303xx : DIPOT CANBUS IN TEMP./PRESS. VDO

Thanks to its versatility, the "DIPOT" device lets you connect most products (Speed regulators, Voltage

regulators, Power factor controllers, etc.) that require a voltage or current input, to suit their variation and

management specifications. The output for piloting the boards is managed by a microcontroller that

controls the regulation of an output proportional current loop (which can be converted into a voltage

output using a simple resistance).

The output can be regulated and piloted with UP and DOWN digital inputs, or by modifying the Modbus

protocol registry value via RS485 connection or CANBUS J1939 connection to our generator

management boards DST4601, DST4601PX, DST4400, etc.

2.1

On all DIPOT models, the regulation of the Current Loop can be selected using three configurations of

dip-switches:

from 0 to +20 mA

from -10mA to +10mA

from -20mA to +20 mA

Using one of the current adjustable outputs we can create a voltage output by connecting a resistor to

pins 2 and 3 of connector J1.

The current loop device output is between pins +4, +3 for the positive, and pins -2, -1 of J1 for the

negative. The resistor can be connected to pin 2and pin 3of J1 .

Warning: Carefully consider the resistor and the dip-switch configuration, as the max.

voltage range is ± 11V.

Here are some examples:

Example 1:

Voltage required: min. -6V to max. +6 V.

Select ± 20mA

The resistance to use is:

 300

02,06A

The dissipation power of the resistor must be at least:

WAVIVP 12,002,0*6* 

The resistor to be used will be 300ohm - 1/4W

4 User’s Manual

Example 2:

Voltage required: min. 0V to max. 11 V.

Select ± 20mA

The resistance to use is:

 550

02,011 A

The dissipation power of the resistor must be at least:

WAVIVP 22,002,0*11*

The resistor to be used will be 550ohm - 1/4W

2.2

Connector J5 is used for the power input; input voltage can be either 12 or 24VDC, with a self-rearming

internal fuse. The device is protected by input polarity switching.

The maximum current absorption is approximately 80 mA at a voltage of 10V. The input voltage range

is between 7.5 and 32 VDC.

Configuration:

-J5 –PIN 1: positive input

-J5 –PIN2: negative input

-J3 –PIN6: Ground (cable screens)

Wiring Diagram:

The DIPOT board has several dip switches, which let you set the specific functions of the device, the

current loop value and the properties of the serial port.

The SWE switch is an 8-way dip switch for setting the following specific functions of the product:

DIP 1-4 (Communication address: assign the modbus address to the device (in the CANBUS

version, the communication address is fixed)

User’s Manual 5

DIP 5(analog on CANBUS): enables/disables transmission via Can bus of the water temperature

and oil pressure sensors connected to the analog inputs of the DIPOT module (connector J2). In

the Can Bus version of the receiving device, the Can is always enabled, regardless of the state of

this switch, if SWE dip 7 is ON (REMOTE CONTROLS).

DIP 6 (CCW/CW): lets you switch the current loop output in relation to data control (and then

switch from CW to CCW operating mode). In CW mode, the request with a CANBUS/Modbus

message or from the UP button, for an increment in the command, will result in a drop in the value

of the output current while in CCW mode, the request with a CANBUS/Modbus message or from

the DOWN button, for a decrease in the command, will result in an increase in output current.

DIP 7 (REMOTE/LOCAL CONTROL): in "Local" mode the up/down/reset buttons are acquired

and let you change the current loop output value. In "Remote" mode, the current-loop output value

is determined by the CANBUS or Modbus command. With version RS485 in "Remote" mode, the

value of the MIN, MAX, RESET and RAMP trimmer is set in the "Holding register.

DIP 8(Rpm1500/1800 from CANBUS/DIGITAL INPUT): determines if the nominal speed of the

motor (1500 or 1800 rpm) is automatically detected by the CANBUS or digital input J3-2. (If the

input is active, the nominal speed is 1800 rpm, if the input is inactive the nominal speed is 1500

rpm).

Switch SWD is a 4-way switch and sets the properties of the available serial port on stereo jack connector

J6 and connector J4:

DIP 1 (120R ON/OFF): lets you connect/disconnect the 120R termination resistor on serial port

RS485 of J6 (only if necessary and if the port is set as RS485).

DIP 2 (Enable/disable Serial port): enables/disables the serial port on stereo jack J6.

In the versions with isolated RS485 (E6102094300xx and E6102094301xx) serial port of connector J4

is shared with connector J6. Use SWD dip 2 to select which port should be used. The serial ports on J4

and J6 cannot operate simultaneously. If the serial port is used on connector J6, disconnect the female

connector on J4.

In versions with CANBUS (E6102094020xx and E6102094303xx) the serial port on connector J6 is

always available.

DIP 3 (RS232/RS485): configures the serial port on Stereo jack J6 as RS232 or RS485 (not

isolated).

DIP 4 (9600/19200 Bd): sets the baud rate used by the serial port on Jack (J6) and also that of

isolated RS485 serial port (J4) if the product is version RS485.

The SWB switch is a 2-way switch and sets the scale of the current loop used:

from 0 to +20 mA SWB-1 OFF SWB-2 OFF

from -10mA to +10mA SWB-1 ON SWB-2 ON

from -20mA to +20 mA SWB-1 ON SWB-2 OFF

The SWC switch is a 4-way switch that lets you enable the voltage insulator function (Setting ON on

switch no. 1).

6 User’s Manual

The output value of connector J1 (current loop) can be controlled by three digital inputs (connector J3),

optically isolated. To control, connect the respective input terminal to the insulated positive after

connecting the insulated negative to the common terminal (J5-1). There are a total of 5 contacts:

Pin 1 of J5 COMMON: common negative of optoinsluated inputs

PIN 2 of J5 SPARE/SPEED: only used in CANBUS version to select the nominal speed

(1500 or 1800 rpm) of the engine (if SWE switch 8 is ON ).

PIN 3 of J5 RESET: resets the output to the set value using the RESET TRIMMER

PIN 4 of J5 DOWN:controls the decrease in the output value to the value set with the MIN

trimmer

PIN 5 of J5 UP: controls the increase in the output value to the value set with the MAX

trimmer

The reset command resets the current to the set output value with RESET TR2 trimmer. Activating the

UP and DOWN controls respectively increases or decreases the current value if in CW mode (dip 6 of

SWE OFF), inverted in CCW mode (dip 6 of SWE ON), to the maximum and minimum values adjustable

using the MAX TR3 and MIN TR4 trimmers. Every activation of an UP or DOWN control produces a step

variation in the current value; keeping the control pressed produces a continuous increase/decrease,

with the speed set by trimmer TR1 RAMP (linear resistance ramp-duration of command).

The green LED on the front of the device indicates an order of magnitude for the output value:

LED flashing slowly (50% on and 50% off): minimum output value

As the output value increases so does the frequency of the flashing (50% on and 50% off)

Led on with short intermittent flashes off (90% on 10% off): max. output value.

2.5

The DIPOT board implements two analog inputs, which can be of two types depending on the model:

Analog inputs 0..5V and 0..10V

VDO pressure transducer (0 .. 10bar) and temperature (0 .. 150 ° C) analog inputs

The analog inputs can be measured differentially as they have separate grounds, to avoid non-

equipotential problems with the input ground point of the signal and the input ground of the device.

However, the potential difference between the input ground of the signal and that of the DIPOT input

cannot be more than 1.5 V; over this level, the measurement is imprecise due to the saturation of the

device amplifiers. Considering the high impedance of the measurement inputs, a screened cable should

be used with very long connections. If the ground connections of the inputs aren't used, the ground of

reference is the device power input.

In the case of configuration for pressure and temperature transducer inputs, the two grounds of the

inputs (J2 pin 3 and pin 1) should not be connected.

Since the resistance of the transducers is relatively low, a screened cable isn't required.

notes: Since the conversion between VDO and VEGLIA Borletti transducers involves a

recalibration of the device, this must be done by SICES Ltd.

Analog values acquired by the device are available in the Modbus registers on port RS485 or with SAE

J1939 CAN BUS.

User’s Manual 7

Four settings can be adjusted on the device using the trimmers on the front:

TR1 - RAMP: adjusts the linear increment ramp for the value/duration of the command;

corresponds to the increment/decrement speed of the value with the respective controls enabled.

Turning clockwise increases the rapidity of the increment, which decreases vice versa counter-

clockwise. The total time of the range can be adjusted from 4 seconds to 120 seconds.

TR2 - RESET: adjusts the value after a RESET command; between MIN and MAX value:

normally corresponds to 50% of the output (if output is set to +/- 10 mA the reset value is 0 mA)

TR3 - MIN: adjusts the minimum value obtainable with DOWN command; turning the trimmer

clockwise increases the minimum value

TR4 - MAX: adjusts the maximum value obtainable with the UP command; the maximum value

increases as the trimmer is turned clockwise

To get the full range, MIN must be turned fully counter-clockwise and MAX fully clockwise. In the

abnormal condition in which the set MIN value exceeds the set MAX value or vice versa; after an

increment or decrement command, the current output remains stable at a fixed value.

The value range can be adjusted observing the relative position of the trimmers, the limits (minimum and

maximum) are directly proportional to the angles of rotation of the respective trimmers at the nominal

value. The RESET trimmer adjusts the default value; the adjustment is linear between the MIN and MAX

values set (ex. with trimmer in the middle of its range, there is the intermediate value halfway between

MIN and MAX).

To adjust the range, proceed as follows:

-turn RAMP (TR1) to half its value;

-set the MAX value to half the value

-set the MIN value to half the value

Proceed as follows:

-With the UP input always active, adjust the output to the desired maximum value by turning

trimmer MAX TR4 clockwise.

-With the DOWN input always active, adjust the output to the desired minimum value by turning

trimmer MIN TR3 clockwise.

-Withthe RESET input always active, adjust the output to the desired reset value by turning trimmer

RESET TR2 clockwise/counter-clockwise.

-Adjust trimmer RAMP (TR1) to obtain the desired rapidity of increment/decrement response.

To fine tune the trimmer values, use the following register:

40019

Select an adjustment

source

0 = from trimmer, 1 =

from Modbus, 2 =

Modbus + trimmer for

fine tuning (+/- 12.5%)

-By setting the registry to 0 the MIN, MAX, RESET, RAMP values are only acquired by the trimmer.

8 User’s Manual

-By setting the register to 1 the MIN, MAX, RESET, RAMP values will only be read by the following

registers:

40004

MAX - Max. PWM value

(0-8191) value that can be

set

Writing max. PWM value

40005

MIN - Min. PWM value (0-

8191) value that can be

set

Writing min. PWM value

40006

RESET - PWM Reset

value (0-8191) value that

can be set

PWM reset value writing

40007

RAMP - PWM Ramp

value (0-8191) value that

can be set

PWM ramp value writing

The trimmers are no longer used.

-By setting the register to 2, the MIN, MAX, RESET, RAMP values are read by the above registers

and the trimmers can be used for fine tuning +/- 12.5% in relation to the value set in the register.

Switching switch 1 of the SWC bank ON activates the voltage insulator function. In other words an analog

input is read and its value is transferred proportionally to the Current Loop output. The LEDs on the front

panel remain lit in this mode.

In this mode, SWE dip switches 5 to 8 are no longer read and a CanBus interface will be disabled.

Using digital input UP (PIN 5 of J5) you can select which digital input will be used for the handshaking:

-With input UP inactive (open), the 0-5V digital input is acquired

-With input UP active (closed), the 0-10V digital input is acquired

In voltage isolator mode the DIPOT lets you decouple, transfer, and reduce or increase the acquired

voltage value.

The current range (± 20mA, ± 10mA, 0-20mA), between the two output terminals (+ C.L. and -C.L.), can

be selected with a switch on the Current Loop output, simply connect a suitable resistance to obtain the

desired voltage range (±11V).

With suitable settings in the following registers we can limit the acquired voltage value making it also

asymmetrical in relation to the output, if desired:

40015

Min. 0-5V input percentage

limit for Voltage isolator

40016

Max. 0-5V input percentage

limit for Voltage isolator

40017

Min. 0-10V input percentage

limit for Voltage isolator

40018

Max. 0-10V input

percentage limit for Voltage

isolator

User’s Manual 9

With suitable settings in the following registers we can also choose the source of adjustment and limit

the range of the output current loop:

40019

Select an adjustment

source

0 = from trimmer, 1 = from

Modbus, 2 = Modbus +

trimmer for fine tuning (+/-

12.5%)

-By setting the register to 0 the MIN, MAX values are only acquired by the trimmers.

-By setting the register values to 1 the MIN, MAX values are only read by the following registers:

40004

MAX - Max. PWM value (0-

8191) value that can be set

Writing max. PWM value

40005

MIN - Min. PWM value (0-

8191) value that can be set

Writing min. PWM value

-By setting the register to 2, the MIN, MAX values are read by the above registers and the trimmers

can be used for fine tuning +/- 12.5% in relation to the value set in the register.

The buttons (except the UP button) and the RAMP and RESET trimmers are no longer read. Only the

MIN and MAX trimmers and the analog input selected with the UP button are read, this is to minimize

the response time between input and output variations as far as possible.

To change mode, move SWC switch SW1, then turn the device off and on again.

If the SWC switch isn't installed on the board, DIPOT can only function in the normal operating mode.

Depending on the DIPOT version, you may have an RS485 communication interface or CANBUS

interface isolated from the I/O and internal logic circuits; this results in high immunity to transient voltages

and eliminates problems caused by differences in the input voltages of the devices connected by bus.

This is particularly useful for long connections, in environments prone to disturbance, or where there is

no guarantee of equipotential grounding between devices (e.g. direct connection to a PC).

When initially setting up the device you can use the serial port on 3.5 mm stereo jack connector J6. This

serial port is non-isolated (unlike those on connector J4) and can be configured as RS485 or RS232

using SWD dip 3. If it is setup as interface RS485 a termination resistor can be used (as required by

standard TIA/EIA-485) to close SWD dip 1.

The line termination must not be switched in if interface RS232 is selected, or the serial port will

malfunction.

The baud rate of the port can also be set (SWD dip 4).

In the versions with isolated RS485 (E6102094300xx and E6102094301xx) serial port of connector J4

is shared with connector J6. Use SWD dip 2 to select which port should be used. The serial ports on J4

and J6 cannot operate simultaneously.

If the serial port is used on connector J6, disconnect the female connector on J4.

Use SWD dip 2 as follows, to select which port will be used:

If SWD -2 is ON, the serial will be available on connector J4 (RS485 isolated with baud rate

selected by SWD-4).

10 User’s Manual

If SWD -2 is OFF the serial will be available on connector J6 (RS232 or RS485 on the basis of

SWD -3 with the baud rate selected by SWD-4). In this case, disconnect female connector J4.

In versions with CANBUS (E6102094302xx and E6102094303xx) the serial port on J6 can always be

used.

4.1

On pins 4 and 2 of J4 connect respectively signal A (Non-inverting Receiver Input/Driver Output) and

signal B (Inverting Receiver Input/Driver Output) of bus RS485.

Connect the cable screen to pin 3 of J4.

DO NOT USE pin 1 of J4 (GND RESERVED).

A 120 ohm termination resistance should be connected directly to terminals 4 and 2 of J4.

On the DIPOT board there is a dip-switch selector that can be used to implement up to 16 DIPOT boards

on the same RS485 bus line, switch the UP inputs with the DOWN inputs and manage the writing of the

remote Modbus registers.

Modbus Address: The max. number of DIPOT boards on the same RS485 bus line is 16. The

SWE dip lets you select the physical address of the DIPOT boards from a value of 1 to a value of

16 by suitably modifying the switches from 1 to 4 as in the following table

Selecting Modbus address:

Note that address 1 is obtained with all the switches (1 to 4) OFF.

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