Omega DRG-SC-FR Instruction Sheet

SPECIFICATIONS
Bridge Excitation
1 to 10VDC, 120mA max.
Input
Accuracy (Including Linearity, Hyster-
Voltage Input
esis)
Full Scale Range: 10mV to
±200mV (Table 1). ±0.1% typical, ±0.2% maximum
of selected range at 25°C.
Impedance: >1MΩ
Stability
Overvoltage: 400Vrms, max.
±0.025%/°C typical, 0.05%/°C
(intermittent); 264Vrms, max.
maximum, of selected full scale
(continuous).
range.
Common Mode (Input to Ground):
Output Noise (maximum)
1800VDC, max.
0.1% of span, rms, or 10mV
Zero Turn-Up: 50% of full scale
whichever is greater.
range
Response Time (10 to 90%)
Span Turn-Down: 50% of full
<200mSec., typical.
scale range
Common Mode Rejection
Operation: direct or reverse
DC to 60Hz:³120dB
acting
³100dB (0 -1mA, range)
Output
Isolation
Voltage Output
1800VDC between input, output
Output: 0-5V, 0-10V
and power.
Impedance: <10Ω
EMC Compliance
Drive: 10mA, max.
Emmissions: EN50081-1
(1KΩ, min. @ 10V)
Immunity: EN50082-2
Current Output
Safety:EN50178
Output: 0-1mA, 0-20mA,
LED Indication (green)
4-20mA
Input Range (approx.)
Impedance: >100KΩ
>110% input: 8Hz flash
Compliance:
<0% input: 4Hz flash
0-1mA; 7.5V, max.(7.5KΩ, max.)
Humidity ( Non-Condensing)
0-20mA; 12V, max. (600Ω, max.)
Operating: 15 to 95% (@ 45°C)
4-20mA; 12V, max. (600Ω max.)
Soak: 90% for 24 hours (@ 65°C)
Temperature Range
Operating: 0 to 55°C (32 to
131°F)
OMEGA ENGINEERING, INC. warrants this unit to be free of manufacturing defects for the life of the product.
If the unit should malfunction, it must be returned to the factory for evaluation. OMEGA's Customer Service Department will issue an Authorized Return (AR) number
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WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design
limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged
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control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs.
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FOR WARRANTY RETURNS, please have the following information
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available BEFORE contacting OMEGA:
1. P.O. number under which the product was PURCHASED,
France: 9, rue Denis Papin, 78190 Trappes
2. Model and serial number of the product under warranty, and
Tel:33 0130-621-400 Fax: 33 0130-699-120
3. Repair instructions and/or specific problems relative to the product
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OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and
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The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter
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specifications without notice.
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Fax: 44 (161) 777-6622
WARNING: These product are not designed for use in, and should not be used for, patient connected applications.
Storage: -25 to 70°C
(-13 to 158°F)
Power
Consumption: 1.5W typical, 2.5W
max. (one 350Ω bridge), 4W max.
(four 350Ω bridges).
Range: 18 to 30VDC
Wire Terminations
Screw terminals for 12-22 AWG
Mounting:
32mm or 35mm DIN Rail
Agency Approvals
CSA certified per standard C22.2,
No. 0-M91 and 142-M1987 (File No.
LR42272) UL recognized per standard
UL508 (File No.E99775). CE Con
formance per EMC directive 89/336/
EEC and low voltage 73/23/EEC.
PIN CONNECTIONS
11 DC Power (+)
12 DC Power (-)
13 No Internal Connection
21 DC Power (+)
22 DC Power (-)
23 No Internal Connection
41 Bridge Input (+)
42 Bridge Input (-)
43 Excitation (+)
51 Output (+)
52 Output (-)
53 Excitation (-)
1
WARRANTY/DISCLAIMER
RETURN REQUEST/ INQUIRIES
FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair
charges. Have the following information available BEFORE contacting OMEGA:
1. P.O. number to cover the COST of the repair,
2. Model and serial number of product, and
3. Repair instructions and/or specific problems relative to the product.
721-0611-00A
DRG-SC-FR
Frequency Input, Field Configurable Signal Conditioner
Instruction Sheet M2392/0796
DESCRIPTION
The Model DRG-SC-FR is a DIN rail
mount, frequency input signal condi-
tioner with 1800VDC isolation be-
tween input, output and power. The
field configurable input and output
offer flexible, wide ranging capability
for variable frequency drives, mag-
netic pick-ups, turbine flow meters,
and other pulse or frequency output
transducers.
The input of the DRG-SC-FR can be
configured for any frequency span
from 2Hz to 10,000Hz. Pulse thresh-
old sensitivity can be adjusted from
50mVp to 150Vrms to ensure accu-
rate frequency measurement and
minimize transient noise related er-
rors. The output can be set for either
0-5V, 0-10V, 0-1mA, 0-20mA or
4-20mA.
Advanced digital technology allows
the DRG-SC-FR to be field config-
ured for virtually any frequency input
to DC signal output within the ranges
specified. Calibration utilizes 'Touch-
Sample' technology where the user
simply applies the minimum and maxi-
mum input frequencies, touching a
recessed button to configure the cor-
responding minimum and maximum
output range.
The very narrow DRG Series housing
enables installations of up to 24 unit
per linear foot. The wide ranging
power supply is inverter isolated and
accepts any voltage between 9 and
30VDC.
APPLICATION
The DRG-SC-FR field configurable
frequency input signal conditioner is
useful in eliminating ground loops and
interfacing pulse output transducers,
such as turbine flow meters and mag-
netic pick-ups, to data acquisition
and control systems.
8/96
Advanced digital technology, combined
(see Configuration, Calibration and
with ASIC technology, provides a stable
Figure 4 for details).
output at low frequencies for higher
CONFIGURATION
accuracy, and three way isolation
A major advantage of the DRG-SC-
which completely eliminates ground
FR is its wide ranging capabilities
loops from any source.
and ease of configuration. The DRG-
'TOUCH-SAMPLE'
SC-FR enables virtually 99% zero
TECHNOLOGY and span adjustability. Any 2Hz
The DRG-SC-FR utilizes 'Touch- range from 0 to 10,000Hz can be
Sample' technology which greatly converted to a full scale output signal
simplifies configuration. To set the (e.g. 0-2Hz /4-20mA or 9998-
input frequency range, the user simply 10,000Hz/4-20mA).
applies the high input frequency and
Unless otherwise specified, the fac-
pushes the CAL button while the IN-
tory presets the Model
PUT LED is lit. The low input frequency
DRG-SC-FR as follows:
is then input and pushing the CAL
button again stores the low frequency
Input Range:
input.
Sensitivity:
Output Range:4 to 20mA
The high and low ranges are stored in
non-volatile memory and correspond
Note: Sensitivity refers to the noise
to the high and low output range which
rejection level or the trigger thresh-
is selected via DIP switches.
old of the input.
To precisely adjust the output, the user
The DC power input accepts any DC
adjusts the input frequency while the
source between 9 and 30V, typically
OUTPUT LED is lit until the desired
a 12V or 24VDC source is used.
output level is achieved. The output
For other I/O ranges, refer to
levels are locked-in by pushing the
Table 1 for output range (SW1) switch
CAL button. Status LEDs show the
settings and Figure 5 for sensitivity
operation mode of the device.
switch setting. For quick and easy
STATUS LEDS
calibration mode reference, see the
The DRG-SC-FR utilizes three status
step by step flow chart in Figure 4.
LEDs. One is to display the frequency
1. With DC power off, choose the
level of the input signal and the other
desired output voltage/current range
two are used while calibrating the de-
from Table 1 and set position 1
vice.
through 8 of output switch selector
The green LEVEL (LVL) LED is on (or
(SW1).
flashing) when there is a signal being
2. Set the input sensitivity switch to
sensed at the input to the device and in
LO for input amplitudes between
the calibration mode. Its intensity
150mVp and 50Vrms, with noise
varies with the frequency of the input
rejection to 1Vp. Set SW2 to HI for
signal during normal operation.
input amplitudes between 500mVp
The yellow INPUT (IN) LED, when on,
and 150Vrms, with noise rejection up
denotes input programming modes. to 10Vp.
The red OUTPUT (OUT) LED, when
on, denotes output programming modes
0 to 1000Hz
1Vrms