HindlePower AT series Manuel utilisateur

AT SERIES

Operating Instructions

MICROPROCESSOR-CONTROLLED FLOAT BATTERY CHARGER

COMMUNICATIONS MODULE

(DNP3 Level 2 / Modbus Protocols)

JA5011-04

AT SERIES COMMUNICATIONS MODULE

DNP3 LEVEL 2 / MODBUS COMMUNICATIONS

FOR THE AT10.1 AND AT30 SERIES BATTERY CHARGERS

• The AT Communications Module allows the user to remotely monitor and control

the AT Series Battery Charger over a serial connection.

• Supports DNP3 Level 2 and Modbus protocols over RS-232 or RS-485 half-

duplex.

• The option can be used with a modem for telephone communications.

• All features of the AT Series front instrument panel are accessible remotely.

• SCADA (Supervisory Control And Data Acquisition) systems will be able to

control, monitor and log the events of the battery charger.

The AT Series Communications Module Option (EJ5037-xx) includes the AT Series

Communications PC Board (A12), external power supply resistor(s) (R29), an Operating

Instructions manual (JA5026-00), and a field-retrofit instruction sheet (JD5008-00). A

compatible industry-standard modem and modem cable are also available. Refer to the items

listed below for part information and check off which items were supplied.

STANDARD COMMUNICATION MODULES Part No.

¨Communications Module for 12 Vdc AT charger EJ5037-01

¨Communications Module for 24 Vdc AT charger EJ5037-02

¨Communications Module for 48 Vdc AT charger EJ5037-03

¨Communications Module for 130 Vdc AT charger EJ5037-04

OPTIONAL ACCESSORIES Part No.

¨Compatible Modem Option PM5005-00

¨10ft / 3.05m Modem Cable EH5026-00

¨25ft / 7.62m Modem Cable EH5026-01

¨50ft / 15.24m Modem Cable EH5026-02

¨100ft / 30.48m Modem Cable EH5026-03

SUPPLEMENTAL DOCUMENTATION

A number of supplemental online documents may be used in conjunction with this manual:

Doc. No. Online Hyperlink Description

JA0102-04 http://www.ATSeries.net/PDFs/JA0102-04.pdf AT Series Comm. Mod. Manual

JD5008-00 http://www.ATSeries.net/PDFs/JD5008-00.pdf AT Comm. Mod. Field Install.

JD5012-00 http://www.ATSeries.net/PDFs/JD5012-00.pdf Main Ctrl PCB A1 Replacement

JE5107-00 http://www.ATSeries.net/PDFs/JE5107-00.pdf AT Series Comm. Mod. Assy

TABLE OF CONTENTS

Section Page No.

1Introduction.........................................................................................................2

2Protocols .............................................................................................................2

2.1 Modbus..................................................................................................................2

2.2 DNP3.....................................................................................................................2

3Hardware .............................................................................................................3

3.1 Installation.............................................................................................................3

3.2 Serial Connections ................................................................................................5

3.2.1 RS-232........................................................................................................5

3.2.2 RS-485........................................................................................................8

3.3 Using a Modem ...................................................................................................12

4Configuration ....................................................................................................14

4.1 DIP Switch Settings.............................................................................................14

4.2 Setup Program ....................................................................................................15

4.3 Factory Defaults ..................................................................................................16

4.4 Status LED (D1) ..................................................................................................16

5DNP V3.00..........................................................................................................17

5.1 Introduction..........................................................................................................17

5.2 Device Profile ......................................................................................................17

5.3 Implementation Table..........................................................................................20

5.4 Point List..............................................................................................................23

5.4.1 Binary Inputs.............................................................................................23

5.4.2 Binary Output Status Points......................................................................24

5.4.3 Analog Inputs............................................................................................25

5.4.4 Analog Output Status Points.....................................................................26

5.4.5 Internal Indications....................................................................................27

6Modbus..............................................................................................................28

6.1 Introduction..........................................................................................................28

6.2 Supported Function Codes..................................................................................28

6.3 Register Definitions.............................................................................................29

6.3.1 Binary Outputs..........................................................................................29

6.3.2 Binary Inputs.............................................................................................29

6.3.3 Input Registers..........................................................................................30

6.3.4 Holding Registers......................................................................................30

6.3.5 Scaling Sample.........................................................................................30

7AT Series Charger Data Ranges......................................................................31

7.1 Voltage Ranges...................................................................................................31

7.2 Current Ranges...................................................................................................31

7.3 Equalize Time......................................................................................................31

APPENDIX A: Frequently Asked Questions (FAQ)..............................................32

APPENDIX B: Standard Drawings

AT Series Battery Charger Communications PC Board Assembly (JE5107-00) .........34

MANUAL SPECIFICATIONS (document control information).................................36

INTRODUCTION / PROTOCOLS

1Introduction

The AT Series Communications option allows the user to remotely monitor and control the

AT Series Battery Charger over a serial connection. Everything that the user can do at the

charger’s front panel display is accessible remotely. The communications option supports

DNP3 Level 2 and Modbus protocols over RS-232 or RS-485 serial communications.

Configuration is done by DIP switches and a setup program for additional parameters. The

communications board supports baud rates of 9600 bps and 19200 bps.

2Protocols

2.1 Modbus

The communications option can be setup to communicate on standard Modbus networks

using either of two transmission modes: ASCII (American Standard Code for Information

Interchange) or RTU (Remote Terminal Unit). The advantage of ASCII allows less strict

serial timing requirements without causing communication errors. The advantage of RTU

allows more data to be transmitted than ASCII mode for higher throughput.

Modbus ASCII mode supports the following serial settings:

• No parity, 7 data bits, 2 stop bits

• Even parity, 7 data bits, 1 stop bit

• Odd parity, 7 data bits, 1 stop bit

Modbus RTU mode supports the following serial settings:

• No parity, 8 data bits, 2 stop bits

• Even parity, 8 data bits, 1 stop bit

• Odd parity, 8 data bits, 1 stop bit

Refer to the Modbus section on page 28 for information on its implementation.

2.2 DNP3

The communications option supports DNP3 Level 2. This implementation of DNP3 meets

Level 2 conformance and supports change events with unsolicited messaging.

The DNP protocol supports the following serial settings:

• No parity, 8 data bits, 1 stop bit

• No parity, 8 data bits, 2 stop bits

• Even parity, 8 data bits, 1 stop bit

• Odd parity, 8 data bits, 1 stop bit

Refer to the DNP V3.00 section on page 17 for information on its implementation.

HARDWARE

3Hardware

3.1 Installation

WARNING

Disconnect and lock out all power to the battery charger before starting any maintenance

procedures. Turn the AC power off at the distribution panel upstream from the battery

charger. Disconnect the battery from the charger output terminals. This includes remote

sense wires if they were installed.

CAUTION

This part is susceptible to damage from static discharge. Please use the following

precautions:

• If you have a ground wrist strap, please use it to ground yourself to the charger

enclosure using the ground stud on the back of the door.

• Touch the ground stud on the back of the door before handling circuit boards or other

static sensitive parts.

• Handle circuit boards only by their edges.

• Ground yourself again before you replace any connectors or terminals on the new

part.

• If you are replacing a static sensitive circuit board parts, be sure you are grounded

before removing the new part from its anti-static carrier.

Installation Steps

Step 1 Turn off the AC and DC circuit breakers on the charger. Using a voltmeter, verify

that all potential voltages on the I/O panel are zero. This includes the DC Output

terminals TB1(+) and TB1(-), and the Remote Sense terminals (+) and (-).

Step 2 Locate the stand-offs that hold the main control card. Use a needle nose pliers to

pinch the retaining ear on the stand-offs, and gently pull the main control card back

off the stand-offs, roughly 0.25 inches. It is best to unlatch all stand-offs first with

the main control card still resting on them. Finally, remove the main control card in

one motion.

Step 3 The EN5004-xx communications module pc board (A12) mounts to the left of the

EN5002-xx main control pc board (A1), with connector (P13) plugged into J13.

Make sure that the pins on the connector line up. See Figure 1.

Step 4 Position the boards over the stand-offs. Firmly push both boards onto the stand-offs

until they are fully seated under the plastic clips. Minimize pc board flexing by

pushing directly on the areas surrounding stand-offs holes. Check the front panel

for proper alignment of indicating lights and push button switches.

HARDWARE

Figure 1

EN5004-00 AT Series Communications PC Board (A12)

Connected To EN5002-00 Main Control PC Board (A1)

Step 5 Connect the ballast resistor(s) (R29) to the power supply connection plug (J20). Pin

2 on J20 is +vdc and pin 4 is common. See Figure 2.

Step 6 Connect the serial connection to TB10 for RS-232 (see section 3.2.1 on page 5) or

TB11 for RS-485 (see section 3.2.2 on page 8).

Step 7 Check your work, read all the steps again and make sure that all the instructions

were performed.

Checks:

¨All stand-offs are fully latched.

¨All wire harness connectors are properly mated.

¨Indicator lights properly align with the front panel.

¨Push button switches work properly.

HARDWARE

COMPONENT LISTING

AT Series Communications PC Board (A12)

INDICATOR LIGHTS:

D1 Status LED

JUMPERS:

J20 Power Supply Connection

J21 Factory Connection

J22 RS-485 Terminating Resistor

(enable/disable)

CONNECTORS:

P13 Plug for Main Control PC Board (A1)

J13 Connection

SWITCHES:

S1 Configuration Switches

S2 MODBUS Address

TERMINAL BLOCKS:

TB10 RS-485 User Connection

TB11 RS-232 User Connection

Figure 2

EN5004-00 AT Series

Communications PC Board (A12)

3.2 Serial Connections

The communications option supports RS-232 and RS-485. RS-232 is a standard serial

communications used on personal computers. It has a limited cable distance and is

acceptable to electrical noise. RS-485 serial communications allow longer distances and

allow multiple devices to be connected to the same serial network. TB10 terminal block is

for the RS-485 connections and TB11 terminal block is for the RS-232 connections.

3.2.1 RS-232

Set configuration switch S1-5 to OFF to select RS-

232. Configuration switch S1-6 Enables or Disables

the RTS and CTS handshaking lines. Terminal block

TB11 User Connection

Pin 1 Pin 2 Pin 3 Pin 4 Pin 5

RDX TDX COM RTS CTS

TB11 is for the RS-232 user connections. In each section for RS-232 3-wire and 5-wire

installation, a typical connection diagram is shown. Each diagram shows the pinout used for

a standard personal computer (PC) for either a 25-pin or 9-pin serial connection.

HARDWARE

3.2.1 RS-232 3-Wire

For a RS-232 3-wire operation, the hardware handshaking lines are disabled. Disable the

hardware handshaking lines by setting configuration switch S1-6 to the OFF position.

Figure 3

RS-232 3-Wire Connection

HARDWARE

3.2.1 RS-232 5-Wire

For a RS-232 5-wire operation, the hardware handshaking lines are enabled. Enable the

hardware handshaking lines by setting configuration switch S1-6 to the ON position.

Figure 4

RS-232 5-Wire Connection

HARDWARE

3.2.2 RS-485

The communications board supports half-duplex RS-485 communications. Set configuration

switch S1-5 to ON to select RS-485. TB10 terminal block is for the RS-485 connections.

The next two sections describe a single connection and multi-drop connection.

Some RS-485 networks may require terminating resistors at both ends of the serial network.

The decision of whether or not to use termination resistors should be based on the BAUD

rate, the cable distance, and the type of cable being used to build the network. In most cases

for BAUD rates under 19.2K, terminating resistors are not required. If termination resistors

are used, the network must be designed with the appropriate biasing resistors to ensure

reliable communications.

The biasing resistors are responsible for ensuring that the network remains in the idle state

when all drivers are tri-stated. In order to guarantee that the receivers remain in a known

state, +/-200mV must always be maintained across the (+) and (-) or (A) and (B) RS-485

inputs. The use of termination resistors requires a significantly lower value of biasing

resistors which results in greater dc loading of the network.

Network design and biasing resistor calculations depend on the number of nodes on the

network, the type of drivers and receivers on the network, and any biasing already designed

into other devices sharing the network. As a result, whether or not use termination resistors

and biasing resistor calculation is beyond the scope of this manual. For more information on

biasing and termination details see the following references:

1) EIA/TIA-485 standard

Telecommunication Industry Association

http://www.tiaonline.org/standards/catalog/

2) RS422/485 Application Note

http://www.bb-elec.com/tech_articles/rs422_485_app_note/table_of_contents.asp

The communications board has a termination resistor built in. Jumper J22 enables or

disables the terminating resistor. If the host computer is on one of the ends and does not

have a built in terminating resistor, add the resistor at the connection across the plus (+) and

minus (-). Each device needs to have a unique address number. Refer to Section 4for

configuration information for either Modbus or DNP protocols.

TB10 User Connection

Pin 1 Pin 2 Pin 3

(+) POS (-) NEG COM

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