HD 9022_1

EM-HD9022 – Configurable Microprocessor Indicator, Regulator Pt100 4 Wire Current or Voltage Input

The microprocessor-controlled panel instrument EM-HD9022 is an indicator with alarm
thresholds that may be programmed and confi gured by the user. At input it accepts
signals arriving from 2 or 3 wire transmitters with 0÷1V, 0÷10V voltage or 0÷20
mA, 4÷20 mA current signals, or 4 wires Pt100 sensors. Confi guration is always
completely present in the instrument, no additional cards are required. The choice
for the confi guration of the input signals is made by means of the keyboard on the
front of the instrument.

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Product Description

The microprocessor-controlled panel instrument EM-HD9022 is an indicator with alarm thresholds that may be programmed and configured by the user. At input it accepts signals arriving from 2 or 3 wire transmitters with 0÷1V, 0÷10V voltage or 0÷20mA, 4÷20 mA current signals, or 4 wires Pt100 sensors. Configuration is always completely present in the instrument, no additional cards are required. The choice for the configuration of the input signals is made by means of the keyboard on the front of the instrument. The dimensions of the instrument are 96×48 mm with depth 145 mm in conformity with DIN 45700. The mode of operation of the HD 9022 is chosen depending on the application, configuring the instrument with the keyboard.
The instrument may also be reconfigured with absolute simplicity on the fi eld in order to adapt it to changes in processing requirements. The configuration involves the input, the scale range, the set point and the auxiliary outputs.

Applications
Typical applications are the display of signals sent by transmitters which may concern temperature, humidity, pressure, speed, capacity, level, force, etc., for the most varied industrial sectors, operating machines and automated systems.

Characteristics
– Set point confi gurable from -9999 to +19999.
– Indication provided by red leds with seven ½ inch segments.
– Separate clamp for voltage input 0÷1 / 0÷10V, current input 0÷20 / 4÷20 mA and Pt100 input (-200÷+800°C).
– The instrument has an auxiliary power supply: -5 Vdc max 10 mA and +15 Vdc non stabilized max 40 mA for the possible supply of 2-wire transmitters.
– RΙIN = 25 Ω, RVIN = 200 kΩ.
– Instrument accuracy: ±0.1% Rdg ± 1 Digit.
– A/D converter resolution: 0.05 mV/Digit, 1μA/Digit.
– Functions: One relay with independent exchange contact for output HI (SP1, SP2).

One relay with independent exchange contact for output LO (SP3, SP4).
One relay with maximum or minimum alarm closing contact (L max, L min.) ALARM.
Resistive relay contacts 3A/220V 50Hz.
– Instrument working temperature: (electronic componentry) 5°C÷50°C.
– Power supply: 12÷24Vac/Vdc (110÷240Vac/Vdc on request).
– Instrument absorption: 5VA.
– Minimum power of the supply transformer: 20VA.

Configuration of the HD 9022 panel indicator
1) Supply power to the instrument.
2) The instrument performs an internal check, the wording C.E.I. appears for a few seconds followed by a number at random.
3) Press PROG and the message F0 appears.
4) Press PROG and the message F1 appears.
5) Press ENTER and the symbol U, A or Pt appears. Using the buttons, choose the input for voltage: U, current: A or Pt100: Pt signals. Press ENTER to confirm.
6) Press PROG and the message F2 appears; press ENTER; with the  keys, set the decimal point in the desired position.

7) Press PROG and the message F3 appears; press ENTER, with the  keys, set the voltage, current or Pt100 value (as desired) corresponding to the beginning of the scale S1 for example 0V, 4 mA or 0°C. Press ENTER to confirm.
8) Press PROG and the message F4 appears; press ENTER, with the  keys, set the numerical value corresponding to the beginning of the scale R1 for example 0°C. Press ENTER to confirm.
9) Press PROG and the message F5 appears; press ENTER, with the  keys, set the voltage or current value (as selected in point 5) corresponding to the end of the scale S2 for example 10V, 20 mA or 200.0°C. Press ENTER to confirm.
10) Press PROG and the message F6 appears; press ENTER, with the  keys, set the numerical value corresponding to the end of the scale R2 for example 100°C. Press ENTER to confirm.
11) Press PROG and the message F7 appears; press ENTER, with the  keys, set the maximum alarm threshold value L max for the Alarm relay for example 110°C. Press ENTER to confirm.
12) Press PROG and the message F8 appears; press ENTER, with the  keys, set the minimum alarm threshold value L min for the Alarm relay for example -10°C. Press ENTER to confirm.
13) Press PROG and the message SP1 appears; press ENTER, with the  keys, set the Set value for the first threshold “SET relay HI” for example 40°C. Press ENTER to confirm.
14) Press PROG and the message SP2 appears; press ENTER, with the  keys, set the Reset value for the first threshold “RESET relay HI” for example 45°C. Press ENTER to confirm.

Press PROG and the message SP3 appears; press ENTER, with the  keys, set the Set value for the second threshold “SET relay LO” for example 50°C. Press ENTER to confirm.
16) Press PROG and the message SP4 appears; press ENTER, with the  keys, set the reset value for the second relay “RESET relay LO” for example 48°C. Press ENTER to confirm.
17) Press PROG and the message S10 appears. Press ENTER, with the  keys, set the desired speed of RS232 serial transmission among the following ones: 300, 600, 1200, 2400, 4800, 9600 baud. Press ENTER to confirm.
18) Press PROG and the message F0 appears. AT THIS POINT THE CONFIGURATION OF THE INSTRUMENT IS COMPLETE.
19) Connect the input of the instrument, press the ENTER key and the display will indicate the value corresponding to the input signal. Varying the configuration
To vary a stored parameter at any stage of the program it is sufficient to the step of the program to be changed with the PROG key (F1, F2, F3, etc.). Press ENTER and use the  keys to modify the parameter previously set; press ENTER to confirm,
return to F0 and press ENTER. This simple procedure modifies the desired step of the program.

Note
If the ENTER,  or  key is pressed independently during operation, the instrument input value (V, mA or °C) flashes on the display. To return to normal operation, press the s tor ENTER key independently again.
Error signal
The instrument indicates an error signal in the following cases:
– OFL: this appears when the set value of R max is exceeded.
-OFL: this appears when the set value of R min is exceeded.
E1: this appears when the set points P1 and P2 require a resolution of the A/D converter higher than the one available.
E2: this appears when the values of F7 and F8 are inverted.
THE MAXIMUM RESOLUTION OF THE CONVERTER IS: 0.05 mV/Digit, 1μA/Digit.
Summary of programming steps of EM-HD9022

Serial interface RS-232C
The HD 9022 is equipped with standard serial interface RS-232C which is available on the SUB D male 9-pin connector. The arrangement of the signals on this connector is as follows:
Pin Signal Description
2 TD Datum transmitted by the EM-HD9022
3 RD Datum received by the EM-HD9022
5 GND Reference logic ground
The transmission parameters with which the instrument is supplied are:
– baud rate 9600 baud
– parity None
– n. bits 8
– stop bit 1
The data transmission speed may be changed by altering the set-up parameter S10 with the keyboard; the possible baud rates are: 9600, 4800, 2400, 1200, 600, 300. The other transmission parameters are fixed. All the messages reaching and leaving the EM-HD9022 must be inserted in a “Communication frame” with the following structure:
<Stx><Record><Etx>
Where:
<Stx> Start of text (ASCII 02)
<Record> constitutes the message
<Etx> End of text (ASCII 03)
Host commands
The structure of the command records is as follows:
<Command character><Sub-command><Values>
Where:
<Command character> is characterized by an alphabetic character indicating the set of commands.
<Sub-command> is characterized by a character indicating the type of command.
<Values> is characterized by ASCII characters that depend on the type of command.

The replies provided by the EM-HD9022 are essentially of two types:
“Information” and “Data”
The former allow information on the status and programming of the EM-HD9022 to be obtained, as well as the diagnosis of the message received; the latter contain data on the channel at the moment the request is made.
It is also possible to make use of the serial line for the complete programming of theEM- HD9022, with the exception of the data transmission speed which may be set only with the keyboard.
The diagnostic replies of the EM-HD9022 are composed of the following control characters, sent individually (not inserted in the communication frame):
-ack- Command executed (ASCII 06)
-nak- Incorrect command (ASCII 15H)
COMMAND A
Sub-command Values Replies
A Type of terminal HD 9022
C Company
D Firmware Version Vxx Rxx
E Firmware Date dd/mm/yy
F Serial Number (rd) xxxxxx
(wr) stxAFxxxxxxetx ack/nak
COMMAND M
Sub-command Values Replies
1 Measure Channel 1 ack/nak
RESET COMMAND
Values Replies
(wr) stxRESETetx ack/nak
CHANNEL 1
C1F01 x Input in V/A/Pt ack/nak
C1F02 x Point 0/1/2/3 ack/nak
C1F03 xxxx Start of scale -9999…19999 ack/nak
C1F04 xxxx V/I Start of scale 0000…10000 (2000 if I) ack/nak
C1F05 xxxx End of scale -9999…19999 ack/nak
C1F06 xxxx V/I End of scale 0000…10000 (2000 if I) ack/nak
C1F07 xxxx Energ. Relay HI -9999…19999 ack/nak
C1F08 xxxx De-energ. Relay HI -9999…19999 ack/nak
C1F09 xxxx Energ. Relay LO -9999…19999 ack/nak
C1F10 xxxx De-energ. Relay LO -9999…19999 ack/nak
C1F11 xxxx Min Relay Alarm -9999…19999 ack/nak
C1F12 xxxx Max Relay Alarm -9999…19999 ack/nak
As regards the command just described, a few remarks must be made:
– There is no command character.
– For the other controls of the type C1F01 etc., the present programming status
is supplied for the specific command if only the sequence of the sub-command
characters is sent.
Ex: StxC1F01Etx Request from Host
StxC1F01:1Etx Reply
If the sequence of the sub-command characters is followed by a space and then the
desired programming value, the programming of the parameter is produced.
Ex: StxC1F01 1Etx Command from Host
ack / nak Reply
StxC1F03 1000Etx Command from Host
ack / nak Reply
StxC1F03-2000Etx Command from Host
ack / nak Reply
StxC1F0512000Etx Command from Host
ack / nak Reply
Note: for programming of the point F03…F12, the value field has fixed length of 5
characters. The first character in the value field may be a space, the minus sign, or
the number 1.

 

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Manuals and Brochures here.  

HD9022.pdf

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