Altronic DD-40NTS-O Manuel utilisateur

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DIGITAL ANNUNCIATOR INSTALLATION INSTRUCTIONS

DD-40NTS-O, DD-40NTS-U DD-NTS II 5-02

WARNING: READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR

OPERATING THE DD ANNUNCIATOR SYSTEM. AN IMPROPERLY INSTALLED OR

OPERATING DEVICE MAY RESULT IN AN UNSAFE OPERATING CONDITION OF THE

MONITORED MACHINE WHICH CONSEQUENTLY COULD POSE THE THREAT OF

PERSONAL INJURY TO OPERATORS OR OTHER NEARBY PERSONNEL.

1.0 DESCRIPTION

1.1 The Altronic DD-40NTS digital annunciator is an electronic, 40-point monitor and shutdown

device. The annunciator hasa built-in hourmeter / tachometer with over speed protection.

A front mounted keypad serves as a user interface along with a LCD display.

1.2 The DD-40NTS annunciator system is suitable for use in Class I, Group C or D, Division 2

hazardous locations and consists of the following items:

DD-40NTS-O Annunciator, 40 normally open points

DD-40NTS-U Annunciator, 40 normally closed or open points (can be mixed)

(requires terminal module part no. 672169-1)

691200-1 Power Supply- 10 to 30 Vdc, 50 mA max. or 100 to 400volt negative ground

CD ignition systems.

693115-1 Cable, DB-25 (2 required for DD-40NTS-U unit only)

693116-1 Cable, DB-9 (for RS-232 serial communications)

1.3 RS-232 / RS-485 serial communications are provided for remote engine monitoring via

modem or satellite. Serial communications require the use of the DC power option.

1.4 For reliable operation, the following instructions must be adhered to strictly.

2.0 MOUNTING

2.1 ANNUNCIATOR UNIT - Using four #10 screws, mount the Annunciator Unit inside a control

panel or to a suitable flat surface so that the display is at a convenient viewing height. A

drilling template is provided. The annunciator unit box must be grounded.

NOTE: Avoid mounting with the LCD display facing direct sunlight. The display

temperature range is -40°F. to +175°F.

2.2 691200-1 POWER SUPPLY - The Power Supply mounts directly to the back of the

Annunciator Unit using two 8-32 x 5/16" length screws provided.

2.3 The terminal strip board (onlyapplicable on the -Uversion) can be snapped on 32 or35 mm

DIN mounting rails.

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3.0 WIRING (SEE WIRING DIAGRAMS)

3.1 The annunciator unit plugs into the power supply through a DB-9 connector.

3.2 The sensor leads connect to the removable terminal strips on the back of the annunciator.

These terminal strips match those used with the earlier DD-40NT / DD-20NT systems.

3.3 At the terminal strip of the Annunciator unit, strip the insulation back 3/8"; twist the exposed

wires tightly together. Insert the exposed wire end completely into the terminal strip and

securely tighten the clamping screw. It is suggested that wire 18 AWG (max.) to 24 AWG

(min.) be used for the connections directly to the annunciator terminal strip connector.

3.4 Wires runningto thevarioussensors should be in goodcondition or replacedwithnew wiring.

Terminationstothemainpanelterminalstrip(ifused) should bemadewith asuitableterminal

and crimping tool or by soldering. There is no requirement for explosion-proof conduit or

Class I enclosures; however, suitable physical protection should be provided.

CAUTION:

a.) SENSOR WIRING: Sensor wires within the panel enclosure must be kept at least two

(2) inches from other wiring. Use a separate junction box for ignition and fuel valve

wires. Runsensorleads leavingthepanelinaconduitseparatefromallotherwiringand

keep separate throughout the installation. Wiring to the sensors must have a grade of

insulationcapable of withstanding an AC voltage of 500V. RMS. Sensor leads may be

connectedtoanypassivedeviceusingcontactssuchasstandardswitchgauges orlevel

switches. DO NOT connect sensor leads to relay contacts or to any voltage producing

element.

b.) Sensors will be exposed to much lower voltages and current than with the standard

Murphytattletale orsimilar type system. Inthe caseofa fieldconversionwhere sensors

have previously been used with Murphy tattletales, it is recommendedthat the sensors

be checked frequently when the DD system is first put into use. Sensor contacts may

beburnedorpitted frompastexposure to ignitionsystem primaryvoltage.It isadvisable

to replace such sensors.

c.) If it becomes necessary to check sensor to panel wiring with an ohmmeter or other

checker, firstDISCONNECTtheplug-interminalstripsfromtheback of the Annunciator

Unit. Applying voltage to the annunciator through the sensor leads may damage the

device. In addition, the area should be tested as non-hazardous before such testing

commences.

3.5 For the -U version, connect the annunciator unit to the 672169-1 terminal modules using

693115-x cables with standard DB-25 connectors. Make sure the cables are securely

connected.

WARNING REGARDING OLDER ALTRONIC OVERSPEED DEVICES:

If retrofitting into an older panel, the DD-40NTS annunciator will not recognize the output

signal from older Altronic overspeed devices:

DTO-1000, DTO-1010, DTO-2200, DTO-3200

DTHO-2100, DO-3300, PTO-2100, PTHO-2100

These devices will NOT work for overspeed protection in conjunction with a DD-40NTS

annunciator. For such protection, use the overspeed feature built into the DD-40NTS

annunciator (refer to section 6.3).

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4.0 ANNUNCIATOR CONFIGURATION

4.1 The DD-40NTS series unit MUST be configured prior to use. If replacing an older series DD

series annunciator, modes 1 and 4 can be used to directly emulate the older system’s

performance. Mode 1 duplicates the operation of the DD-40 series and mode 4 duplicates

the DD-20 series units. To configurethe unit, pressthe MENU key to reachthe configuration

headingsfrom the normal display mode. After a selection has been made, press the ENTER

keyto save theselection. Press MENU to move tothe next step. A flowchart is provided that

shows step-by-step progression through the annunciator configuration procedure.

4.2 CONFIGURE MODE - The mode selection allows the unit to be programmed in one of four

modes as shown. The RESET button must be pressed after a change in mode number.

NOTE: A keypad sequence (password) is required to edit values. From the status screen

(RPM, HOURS, orSTATUS) ,pressandholddowntheENTERkeythenpresstheMENU key

at the same time to allow values to be modified. Otherwise, selected items may only be

viewed. There is no similar protection for the TIMER button (Class B1 and B2 timers) or

hourmeter.

MODE TYPE OF POINTS CHANNELS NOTES

124 Class A

16 Class B1

30-37, 40-47, 50-57

10-17, 20-27

Duplicates operation

of DD-40NT series.

24 Class A

12 Class B1

4 Class B2

30-37, 40-47, 50-57

10-17, 20-23

24-27

24 Class A

10 Class B1

2 Class B2

4 Class C

30-37, 40-47, 50-57

10-17, 20-21

22-23

24-27

412 Class A

8 Class B1

20-27, 30-32, 40

10-17

Duplicates operation

of DD-20NT series.

Class Definitions:

Class A Point is always armed.

Class B1 Point is armed B1 time after power-up or pressing the RESET key.

Class B2 Point is armed B2 time after power-up or pressing the RESET key.

Class C Point is armed after it clears.

Usethe UP and DOWN keys to select themode and press the ENTER keyto save the mode.

4.3 PROGRAM RPM 1 - This selects the RPM pre-divide number equal to the pulses per

revolution (PPR). The RPM signal can be from either a CD ignition shutdown lead or a

magnetic pickup. The range is selectable from 0.5 to 360 PPR. Use theUPandDOWNkeys

to select the proper pre-divide number and press the ENTER key to save.

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4.4 PROGRAM RPM 2 - This selects the RPM overspeed value. The range is selectable from

1 to 2499 RPM. Use the UP and DOWN keys to select the overspeed value and press

the ENTER key to save the selection. To disable the overspeed function, enter 2500.

4.5 PROGRAM TIMER 2 - This selects the time delay in seconds for tripping SDI and OUTPUT

2 after a fault occurs. The range of the delay is from 1 to 60 seconds. Use the UP and

DOWN keys to select the time and press the ENTER key to save the selection. In typical

applications, SW 1 is used to turn off the fuel and either SDI or SW2 is used to turn off the

ignition.

4.6 PROGRAM SW1 - This selects the RUN state of output SW1, normally open (N.O.) or

normally closed (N.C.). Use the UP and DOWN keys to select the state and press ENTER

to save.

4.7 PROGRAM SW2 - This selects the RUN state of output SW2, normally open (N.O.) or

normally closed (N.C.). Use the UP and DOWN keys to select the state and press ENTER

to save.

4.8 PROGRAM SERIAL MODE - This selects the type of communications used by the

annunciator. Selections are provided for NONE (must be used for ignition powered

applications),RS-232 ASCII (A 232), RS-232 Modbus RTU (232), RS-485 ASCII (A 485), or

RS-485 Modbus RTU (485). Use the UP and DOWN keys to select and ENTER to save.

4.9 PROGRAM NODE NUMBER - This selects the node number for the annunciator. Therange

of the node number isfrom 01 to99. Use theUP and DOWN keys to select the node number

and press the ENTER key to save the selection. This applies onlyfor serial communications

and need not be programmed for non-serial applications.

4.10 PROGRAM HOURS - Thisselects thepre-programmed numberof hours. Therangeis from

00000 to 65535 hours. Press theUP and DOWN arrow keysto modify thehours, thenpress

the ENTER key to save.

4.11 TIMER KEY -This selects the B1 and B2 timer delays. The range is from 1 to999 seconds.

Pressing the TIMER key once displays the B1 timer, and pressing the TIMER key again

displays the B2 timer. Use the UP and DOWN keys to change the respective B timer and

press the ENTER key to save the selection.

4.12 DEFAULT SETTINGS - As shipped from the factory, the device default settings are as

follows:

MODE 1

RPM1 (PPR) 1

RPM2 200 RPM

TIMER2 5 seconds

SW1 N.O.

SW2 N.O.

SERIAL MODE None

NODE NUMBER 01

HOURS 00000

B1 TIMER 5 seconds

B2 TIMER 10 seconds

NOTE: Unit must be properly configured for each application prior to use.

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5.0 KEYPAD DESCRIPTION / FUNCTION

5.1 MENU - This key allows the user to view / change the following:

1. Mode selection

2. Pulses per revolution

3. Over speed value

4. Output timer 2

5. Node number

6. Programmed hours

5.2 UP ARROW - This key is used to increment / modify selections and allows the user to view

either the current RPM, the hourmeter or the annunciator status.

5.3 DOWN ARROW - This key is used to decrement / modify selections and allows the user to

view either the current RPM , the hourmeter or the annunciator status.

5.4 ENTER - This key allows for selected items to be saved.

5.5 STOP - This key initiates a shutdowncondition and the unitwill displaya status of [60]. This

has precedence over all other functions.

5.6 RESET - This key clears any faults and resets the Class B1 andB2 timers. The annunciator

displays [00] if one or morepoints isnot armed. Once all the channels are armed,the display

reads [01]. The annunciator will power up in the RESET mode. The unit will not reset the

outputs if any of the Class A points are faulted.

5.7 TEST - Thiskey provides for batteryand operating voltage tests andalsoallows inputs to be

tested (faulted) without causing a shutdown. The battery in the Power Supply may be

checkedwhen the machine is down and the display reads [00]; push and hold theTEST key -

areading of [80] indicates satisfactory battery voltage. The operating voltage may be

checked when themachine is operating and the display reads [01]; push and hold the TEST

key - a reading of [89] indicates theoperating voltage is acceptable. To test thesensor input

points, the annunciator must first be displaying [01] meaning all pointsare armed. Push and

releasethe TEST key, andthe display willread [09] indicating the TestMode. Faulted points

willbe displayed but willnot cause the outputs totrip. Testing an additional point requires the

TEST button to bepressed again. The annunciator will remain in test mode for two minutes

before reverting back to the running mode [01]. Any point not cleared in twominutes (either

by pressing the TEST or RESET key) will cause the outputs to trip.

NOTE: Two fault occurrenceswilloverride the TEST mode: manual STOP function [60] and

OVERSPEED [70].

5.8 TIMER - This key allows the B1 and B2 delay timers to be viewed or modified.

5.9 KEYPAD SEQUENCE (PASSWORD) PROTECTION - From the status screen (RPM,

HOURS, or STATUS) , press and hold the ENTER key, then press the MENU key to allow

values to be modified. Otherwise, the selected items may only be viewed. There is no

keypad sequence protection for the TIMER button (Class B1 and B2 timers).

5.10 CANCEL TIMERS - From the status screen (RPM, HOURS, or STATUS), depress the

ENTER key. While holding the ENTER key, also press the DOWN ARROW key.

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6.0 OPERATION

6.1 OPERATING SEQUENCE

MACHINE DISPLAY FUNCTION DESCRIPTION

Down [10-57] Shutdown Shutdown caused by the fault number indicated. Number

will remain until fault is corrected and RESET button

depressed.

[60] Shutdown Shutdown caused by depressing STOP button.

[70] Shutdown Shutdown caused by overspeed.

[71] Shutdown Shutdown caused by loss of RPM signal.

[80] Shutdown Push TEST button when down, indicates battery is OK.

[00] Reset Before starting machine, momentarily push the RESET

button. A display of [00] indicates all Class A sensors are

ready for start-up. Any number 10-57 indicates a faulted

sensor that must be cleared before start-up.

[60] Engine

Purge To purge engine prior to start, depress the STOP button,

roll the engine to purge, then push the RESET button.

Engine can then be started provided display reads [00].

Running [00] Start-up Start-up timers have Class B1 and B2 points disarmed. All

Class A points are being monitored. Pushing the RESET

button re-cycles the start-up timers. To cancel the start-up

timers, press the ENTER key, followed by the DOWN key

while still depressing the ENTER key.

[01] Normal All points are being monitored. The transition from [00] to

[01] indicates the end of the last start-up timer interval.

[89] Test From [01] display, press and hold TEST button; indicates

adequate operating voltage.

[09] Test Press and release TEST button - a timed test period is

initiated for approximately two minutes. As a sensor is

faulted, its number is latched on the display (but the output

is not activated). To move to the next point, first clear the

sensor, then push the TEST button again. The display

reverts to [09] until the next sensor is faulted. After the last

test, push the TEST button to get [09] on the display; wait

two minutes until [01] displays.

[01] Normal Test period has ended; all points are being monitored. DO

NOT LEAVE MACHINE UNLESS DISPLAY READS [01].

NOTE:

a.) TEST cannot be used until the start-up timer interval ends - [01] on the display.

b.) Adisplay reading of [09] means the system output will not activate unless the STOP button is

pushed.

c.) Do not leave a sensor number on the displayafter the last test; push the TEST button to get [09]

on the display; then wait two minutes until [01] displays or select the CANCEL TIMERS feature.

d.) For a complete system test, allow the test timer interval to expire - display changes from [09] to

[01]. Then cause one sensor to fault and allow the system output to activate. This will test the

entire system for correct operation upon a fault with minimal downtime.

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6.2 RPM / HOURMETER - Press the UP and DOWN keys toview theRPM and the hourmeter.

The RPM screen remains until the operator chooses another option. The Hours display will

revert to the status screen after two minutes. In either case, the annunciatorwilldisplay the

fault number when a shutdown occurs.

6.3 RPM OVERSPEED PROTECTION - The DD-40NTS annunciator has a built in tachometer

to monitor engine overspeed. When the detected RPM is greater than the RPM overspeed

setpoint, the annunciator will trip the fuel and ignitionoutputs. When this occurs, theunit will

display [70] and activate the “FAULT” indicator. Refer to the Wiring Diagram - Tachometer

Input drawings for the proper hookup.

WARNING:The DD-40NTS annunciator will not recognize the outputsignal from an Altronic

DTO-3200or other older overspeed devices (see listing on page 2). These devices will NOT

work for overspeed protection in conjunction with a DD-40NTS annunciator. For such

protection, use the overspeed feature built into the DD-40NTS annunciator.

6.4 BATTERY - The 691200-1 Power Supply contains a speciallong-life lithium battery. When

the monitored equipment is not operating, current draw form the battery is only microamps

(millionths of amps). When the annunciator is powered, there is no drain from the battery.

This allows for a battery life of up to 5 years in normal operation. The battery in the power

supply is replaceable; use ONLY Altronic part no. 601952. Be sure to observe the proper

polarity as marked in the Power Supply when replacing the battery.

7.0 OUTPUTS

7.1 Two (2) digitaloutputs SW1 and SW2 arelocated inthe Power Supply. Theseare rated 400

volts DC, 0.5 amp maximum.

7.2 Output SW1 will trip immediately upon a fault condition or if the STOP key is depressed.

7.3 Outputs SDI and SW2 will trip after a pre-programmed time delay (TIMER PROGM2) from

either a fault condition or if the STOP key is depressed.

7.4 For Power Supply 691200-1, the maximum voltage is 400 volts from a negative ground C.D.

ignition with a current drain of microamps. The maximum current rating is 50 mA when

powered from a DC voltage source of 10 to 30 volts.

8.0 SERIAL COMMUNICATIONS

8.1 Serial communications may be selected as RS-232 or RS-485 using ASCII or Modbus RTU

protocol.

8.2 MASTER/SLAVE OPERATION - The RS-485communication system in the annunciator is

designed as a master/slave system; that is, each unit responds to its own unique address

(node number) only after it is interrogated by the master (computer). A simple command /

response protocol must be strictly observed.

8.3 NODE NUMBER - The node number is used in the system to identifythe desired slave unit

being polled. The node number can be any numeric value from 1 to 99.

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8.4 ASCIICOMMUNICATION-Allcommunicationtoandfromtheannunciatorisperformedusing

ASCII characters. This allows the information to be processed with the "string" functions

commontohighlevelcomputerlanguagessuchasBASICandC. Forcomputersthatsupport

standard serial port interfaces, no special machine language software drivers are required.

Theuse ofthe ASCII formatalso allowsfortheconnectionof thesedevices toanauto answer

modem for long distance operation without the need for a local supervisory computer. The

ASCII characters also make system debugging easy using standard terminal emulation

software.

8.5 COMMUNICATIONS PARAMETERS

Baud Rate: 9600

Data Bits: 8

Stop Bits: 1

Parity: None

8.6 COMMAND STRUCTURE - The annunciator operates with a simple command/response

protocol to monitor all functions. A command must be transmitted to the unit by the master

(computer or PLC) before the slave can respond with useful data. A slave unit can never

initiate a communications sequence.

Communication to the annunciator is performed with two character ASCII command codes.

The general format used for the commands is illustrated below using the READ DATA

command as an example. The hexadecimal values for the characters are shown only as a

reference for those usinglow level (assembly language) decoding andwillnot appear on the

communications terminal screen. All of the characters used in the communications protocol

are standard ASCII characters and appear on the computer keyboard as shown with the

exception of the "not acknowledge" (NAK) which is the industry standard "control U".

header start node space command end

ASCII >(01 R D)

HEX 3Eh 28h 30h 31h 20h 52h 44h 29h

Command Header ">" (3Eh) - Each command must begin with the command header

sometimes referred to as a prompt character. The ASCII character used is the ">" which

means that a command message will be sent from the master to the slave.

Startof Text"(" (28h) - The commandheader must be followedby the startof textindicator.

Node Number "01 -99" (30h 31h) - The node number or address of the device being

contacted.

Space (20h) - Following the node number is an ASCII space character (not printable, value

20h) to act as a delimiter between the node number and the two character command word.

CommandWord"RD" (52h, 44h) -Thecommand wordsarestandardtwo letter(uppercase)

commands sent by the master for gathering specific information about the status of a slave.

The commands are listed under STANDARD COMMANDS below.

End of Text ")" (29h) - The end of text indicator says this is the end of the command.

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STANDARD COMMANDS

Information coming

serial command(s) Command Response Notes

Annunciator status >(01 RD) <(01 XX) (XX - Refer to section 6.0)

Read hourmeter >(01 RH) <(01 XXXXX) (XXXXX = Hours)

Read current RPM >(01 RP) <(01 XXXX) (XXXX = RPM)

Reset the annunciator >(01 RR) <(01 RR)

Stop the annunciator >(01 RS) <(01 RS)

Valid Response - A command/response sequence is not complete until a valid response is

received. When a slave unit receives a valid command, it interprets the command, performs

the desired function and then communicates the response to the master within 20mS. The

master may not initiate a new command until the response from a previous command is

completed.

A valid response can occur in three ways:

1. A normal response indicated by a "< " header and "( )" beginning and end of text.

2. An error response indicated by a "§" NAK (not acknowledged) .

3. A communications time-out error.

An NAK error response will be sent by the annunciator when it has receiveda command with

an error in the message. All commands must be of the format above. The header,

start-and-end of text characters, a valid node number and spaces must be sent and correct

to receive an NAK; if not, no response will be sent.

8.7 RS-485 COMMUNICATIONS

A. HALF DUPLEX OPERATION - The RS-485 system employed uses two wires for

communication and cannot sendand receive data at the same time over the same two

wires making it a half duplex system. When the master is in the transmit mode, the

slave is in the receive mode and visa-versa.

B. ELECTRICAL OPERATING RANGE- RS-485 is a communications standard to satisfy

theneedformulti-droppedsystemsthatcanoperateathighspeedsoverlongdistances.

RS-485 uses a balanced differential pair of wires switching from 0 to 5 volts to

communicatedata. RS-485 drivers can handle common modevoltagesfrom !7 to +12

volts without loss of data, making them an excellent choice for industrialenvironments.

C. COMMUNICATIONS WIRING - The RS-485 wiring diagram illustrates the wiring

required for multiple slave unit hookup. Note that every slave unit has a direct

connection to the master. This allows any one slave unit to be removed from service

without affecting the operationof the other units. Everyunit must be programmed with

aunique address or node number, but the addition of newunitsor nodes can be in any

order. To minimize unwanted reflections on the transmission line, the bus should be

arranged as a trunk line going from one module to the next. Random structures of the

transmissionline should beavoided. Special caremust betaken with long busses (500

feetormore)toensureerrorfreeoperation. Long bussesmustbe terminatedwitha120

ohm resistor between the terminals marked RS-485 "A" and RS-485 "B" at the master

only. The use of twisted pair shielded cable will enhance signal fidelity and is

recommended. To prevent ground loops the shield should be connected to the shield

terminal at the master only.

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D. LOADING - RS-485 uses a balanceddifferential pairof wires switching from0 to 5volts

tocommunicate data. In situations wheremany units(99 max.) are connected together

on a long run, voltage drop on the communications leads becomes a major problem.

Voltage drops on the RS-485 minus lead appear as a common mode voltage to the

receivers. While thereceiversare rated to amaximum voltage differenceof +/!7 volts,

!7V to +12V, a practical system should not have a voltage difference exceeding +/!3

volts under normalconditions. The wire gauge usedfor theconnections therefore limits

the maximum number of units or the maximum length of wire between units in each

application. The following formula can beused as a guidelineto select the appropriate

wire gauge.

For 18 AWG wire No. of annunciator units = (4000) / (ft of wire used)

For 20 AWG wire No. of annunciator units = (3600) / (ft of wire used)

For 22 AWG wire No. of annunciator units = (2400) / (ft of wire used)

NOTE: The maximum number of units connected together in a system is 99.

8.8 RS-232 COMMUNICATIONS

A. For proper operation, the wire length should not exceed 50 feet.

B. Usestandard DB-9 connectorandcomputer cable,Altronicno.693 116-xor equivalent.

8.9 MODBUS STRUCTURE - The annunciator can operate asa Modbus RTU slave. A

command must be transmitted to the unit by the master (computer or PLC) before the slave

can respond with useful data. A slave unit can never initiate a communications sequence.

Select the Modbus communications option. See section 4.8. Communication to the

annunciator can thenbe performed using standard Modbus RTU protocol. Multiple register

reads are supported, specify number of registers.

40001 RPM ( 0-2500 )

40002 Hourmeter hours ( 0-65535 )

40003 Class B1 timer ( seconds )

40004 Shutdown Status ( 0 = OK, 1 = Fault )

40005 Output Status ( bit 0 = SW1, bit 1 = SW2, 1 = tripped, 0 = running )

40006 Input ( chan. 10-27; bit 0 = 10, bit 8 = 20, bit 15 = 27 )

40007 Input ( chan. 30-47; bit 0 = 30, bit 8 = 40, bit 15 = 47 )

40008 Input ( chan. 50-57; bit 0 = 50, bit 7 = 57, bit 8 = ovrspd, bit 9 = loss of spd)

Input OK = 1, Input Fault = 0; 40006, 40007, 40008 all FF for running OK.

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