Omega Vehicle Security RS-232 Fascicule

The  iDRN  Series  of  DIN  rail-mountable  signal  conditioners
are  available  for  Thermocouple,  RTD,  Strain,  Process, AC
Voltage, AC Current and Pulse/Totalizer input types.
The  factory  calibrated  signal  conditioners  are  ideal  for  all
process  and  power  monitoring  applications,  they  feature 
3-way isolation, high accuracy input, programmable outputs,
and are excellent front end interfaces for programmable logic
controllers  or  data  acquisition  systems.    For  maximum  user
configurability  the  signal  conditioners  allow  complete  input-
output scaling via a RS-232 connection to any PC or PLC.

:

The  signal  conditioner  configuration  program  is  a  MS
DOS/Windows  program  (this  manual  is  for  the  Windows
version).    It  is  designed  especially  for  the  iDRN Series  Signal
Conditioner.  This program will run on any PC with Windows
application and will start automatically.

:

•Your choice of the signal conditioner
•IBM PC or compatible
•Windows software 3.1 or higher, or Windows 95/98
•RJ12 connector with telephone cable
•Adapter (DB9 or DB25 to RJ12)

When connecting a voltage signal, extra care should be

taken  to  prevent  electrical  shock.   Always  turn  the  signal
power off before making connections to the signal conditioner.  

Power Input and Analog Output Setup:
To connect the signal input proceed as follows:
1.

Connect  a  DC  power  supply  with  an  output  voltage

between 10 to 32 Volt DC to the signal conditioner (J1).
Note:

If  power  supply  used  has  current  limiting,  it  may  not

be able to power the signal conditioners if the available output
voltage  is  around  10  Volt,  since  the  peak  current  may  reach 
1 to 5 amp for a few milliseconds.
2.

Determine the maximum voltage to be measured.

ANALOG OUTPUT LINEARITY:
0.1% of FS

ANALOG OUTPUT STEP RESPONSE TIME:
2 seconds to 99% of final value

INPUT POWER:
10 to 32 Volt DC

:

2.4 watts (100 mA at 24 Vdc)

OPERATING AMBIENT:
-5 to +55 °C

STORAGE TEMPERATURE:
-40 to +85 °C

RELATIVE HUMIDITY:
90% at 40 °C non-condensing

The  AC  voltage  input  signal  conditioners  are  high
performance  instruments  that  measure AC  voltages  in  4
ranges which are as follows:  400 mV, 4 Volt, 40 Volt and 400
Volt.  Key features of the signal conditioners are built in active
attenuator,  scalable  analog  output  and  a  simple  RS232
interface  for  scaling  analog  output  and  range  selection.    The
RS232  interface  may  also  be  used  for  digital  transmission  of
input  signal  to  a  computer  or  a  PLC.   Additional  features
include  three  way  isolation  between  DC  power,  signal  input
and analog output/RS232.

INPUT RANGES:
400 mV, 4V, 40 Volt, 400 Volt

FREQUENCY RANGE:
30 Hz to  1 KHz

INPUT IMPEDANCE:
2.1 Meg for all ranges.

ISOLATION:
Dielectric strength per 1 minute test based on EN 61010 for 
50 Vdc or Vrms working voltage.
Three way Isolation:

• Power to Signal Input: 1800V Peak
• Power to Analog Output/Communication: 1800V Peak
• Signal Input to Analog Output/Communication: 1400V 

COMMON MODE REJECTION:
100 dB

INPUT OVER-VOLTAGE PROTECTION:
10% Above full scale continuously.
100% Above full scale for 10 seconds.

ANALOG TO DIGITAL TECHNIQUE:
Dual slope

READ RATE:
3 readings/second

ACCURACY AT 25 °C:
400 mV, 4V, 40V  and 400V  ranges
49 Hz to 500 Hz ±0.2% of FS
30 Hz to 1KHz ±0.2% of FS ±10 counts

TEMPERATURE STABILITY:
400 mV and 40 Volt range  150 ppm/°C typical

4V and 400 Volt range  100 ppm/°C typical

:

2 seconds to 99% of the final value
(Filter time constant = 64)

RESPONSE TIME:
To verify the response time, check the carriage return <CR>,
it will be sent at the end of the response.  You can send
another command after you receive the <CR>.

i.e.

send: *X01
response: X01<DATA><CR>

WARM UP TO RATED ACCURACY:
30 minutes

ANALOG OUTPUT SIGNAL TYPE:
Voltage:  0-10 Volt, maximum current 10mA

Current:  0-20 mA or 4-20 mA, maximum compliance
voltage 10 Volts (maximum loop resistance 500Ω)