Error Signal - Delta OHM HD 9022 Manual Del Usuario

Description
The microprocessor-controlled panel instrument HD 9022 is an indicator with
alarm thresholds that may be programmed and configured by the user.
At input it accepts signals arriving from transmitters with 2 or 3 wires, in voltage
0÷1V, 0÷10V or in current 0÷20 mA, 4÷20 mA, or Pt100 with 4 wires.
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 in-
strument are 96x48 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 recon-
figured with absolute simplicity on the field in order to adapt it to changes in pro-
cessing requirements.
The configuration involves the input, the scale range, the set point and the auxil-
iary outputs.
Applications
Typical applications are the display of signals sent by transmitters which may con-
cern temperature, humidity, pressure, speed, capacity, level, force, etc., for the
most varied industrial sectors, operating machines and automated systems.
Characteristics
- Set point configurable from -9999 to +19999.
- Indication provided by red leds with seven 1/2 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.
= 25 Ω, R
- R = 200 kΩ.
V
IN IN
- 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: there is a terminal board for input 12÷24Vac/Vdc or
110÷240Vac/Vdc (the one or the other; not both kinds of power supply).
- Instrument absorption: 5VA.
- Minimum power of the supply transformer: 20VA.
Function of the keys on the front panel, the display and the leds
Digital display. During programming the following wording appears: F0, F1, F2,
F3, F4, F5, F6, F7, F8, SP1, SP2, SP3, SP4, S10.
State indicator of HI relay.
State indicator of LO relay.
State indicator of ALARM relay.
Decimal point.
SEQUENTIAL PROGRAMMING OF WORKING PARAMETERS
PROG Every time this key is pressed the program moves one step forward (F0,
F1, F2, F3, F4, F5, F6, F7, F8, SP1, SP2, SP3, SP4, S10).
ENTER When this key is pressed during programming, the value of the select-
ed variable, which can be modified by the
once again ENTER confirms the stored value.
s
Pressing this key during programming increases the value indicated on the
display; in F2, it moves the decimal point towards the right. In normal operation
it flashes to indicate the value in Volts, mA or Pt100 corresponding to the input;
with a second impulse it returns to normal operation.
t
Pressing this key during programming decreases the value indicated on the
display; in F2, it moves the decimal point towards the left. In normal operation it
flashes to indicate the value in Volts, mA or temperature corresponding to the
input; with a second impulse it returns to normal operation.
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keys, is displayed; pressing
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
choose the input for voltage:
to confirm.
6) Press PROG and the message F2 appears; press ENTER; with the
keys, set the decimal point in the desired position.
Press ENTER to confirm.
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 ex-
ample 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 ex-
ample -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.
15) 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 CONFIGU-
RATION 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
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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
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If the ENTER, or key is pressed independently during operation, the instru-
ment input value (V, mA or °C) flashes on the display. To return to normal opera-
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tion, press the or 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.
4
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U A
, or Pt appears. Using the
U A
, current: or Pt100: Pt signals. Press ENTER
buttons,
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