Omega DRG-SC-AC Instruction Sheet

SPECIFICATIONS Current Output
Output: 0-1mA, 0-20mA,
Inputs
4-20mA
Voltage Input
Source Impedance: >100KΩ
Ranges: 100mV to 200VAC
Compliance:
Impedance: >100KΩ
0-1mA; 7.5V, max. (7.5KΩ, max.)
Overvoltage: 300VAC
0-20mA; 12V, max. (600Ω, max.)
Current Input
4-20mA; 12V, max. (600Ω, max.)
Ranges:10mA to 100mAAC
LED Indicator (green)
Impedance: 20Ω, typical
8Hz flash when input is 10%
Overcurrent: 200mAAC
above full scale range (FSR)
Overvoltage: 60V peak
Accuracy (Including Linearity, Hyster-
Frequency Range: 40 to 400Hz,
esis)
factory calibrated at 60Hz
+0.1% of span, typical
Common Mode(Input to Ground):
+0.5% of span, maximum
1800VDC, max.
Stability
Zero and Span Range:
+0.025%/°C of selected input
Zero Turn-Up: 50% of full
span, typical.
scale range
Response Time (10 to 90%)
Span Turn-Down: 50% of full
250mSec., typical.
scale range
Common Mode Rejection
Output
DC to 60Hz: 120dB
Voltage Output
Isolation
Output: 0-5V, 0-10V
1800VDC between input, output
Source Impedance: <10Ω
and power.
Drive: 10mA, max.
EMC Compliance (CE Mark)
(1KΩ, min. @ 10V)
Emissions: EN50081-1
Immunity: EN50082-2
Safety: EN50178
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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ã Copyright 1996 OMEGA ENGINEERING, INC. All rights reserved. This documentation may not be copied, photocopied, reproduced, translated, or reduced to any
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Humidity (Non-Condensing)
Operating: 15 to 95% (@ 45°C)
Soak: 90% for 24 hours (@ 65°C)
Temperature Range
Operating: 0 to 55°C
(32 to 131°F)
Storage: -25 to 70°C
(-13 to 158°F)
Power
Consumption: 1.5W typical,
2.5W max.
Range: 9 to 30VDC
Wire Terminations
Screw terminals for 12-22 AWG
Agency Approvals
CSA certified per standard C22.2,
No. 0-M91 and 142-M1987 (File No.
LR42272). UL recognized per stan-
dard UL508 (File No.E99775).CE
Compliance per EMC directive 89/
336/EEC and Low Voltage 73/23/EE.
Mounting
32mm and 35mm DIN Rail
PIN CONNECTIONS
11 DC Power (+)
12 DC Power (-)
21 DC Power (+)
22 DC Power (-)
41 AC Signal Input (Hot)
42 AC Signal Input (Neu)
51 Output (+)
52 Output (-)
WARRANTY/DISCLAIMER
RETURN REQUEST/ INQUIRIES
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3. Repair instructions and/or specific problems relative to the product.
721-0610-00B 11/96
DRG-SC-AC
AC Input, Field Configurable Isolator
Instruction Sheet M2389/0796
DESCRIPTION CONFIGURATION
The field configurable DRG-SC-AC is A major advantage of the
a DIN rail mount, AC input signal DRG-SC-AC is its wide ranging capa-
conditioner with 1800VDC isolation bilities and ease of configuration. The
between input, output and power. The DRG-SC-AC has 15 input range switch
field configurable input and output settings.
offers flexible, wide ranging capability
Trim potentiometers allow 50% input
for scaling, converting or buffering
zero and span adjustablity within each
AC inputs ranging from 5mA to
of the 15 full-scale input ranges.
100mAAC or 50mV to 200VAC. The
DC output of the DRG-SC-AC is pro-
For example, the 200V switch setting
portional to the average of the of the
in Table 1 configures the input for a 0
fully-rectified AC input signal, and is
to 200VAC range. Since the span can
calibrated for sine waves between 40-
be contracted by 50%, this enables an
400Hz.
input span as narrow as 100VAC of
the range. This span can be posi-
For current inputs above 100mAAC, it
tioned anywhere within the 0-200VAC
is recommended that an input shunt
range with a zero offset as large as
resistor be used and the DRG-SC-AC
50% of the full scale range (e.g. 100
be configured for the proper input
to 200VAC range).
range. For example, a 5AAC current
transformer output can use a 0.1Ω,
5W shunt resistor and set the input of
the DRG-SC-AC for 0-500mVAC.
APPLICATION
The DRG-SC-AC is useful in applica-
tions requiring an isolated, conditioned
DC output from an AC signal. Typical
applications include energy manage-
ment, load shedding, motor current/
load monitoring, locked rotor detec-
tion, isolation and data acquisition.
The output of the DRG-SC-AC can
drive a digital meter for direct display
or can interface with alarming or con-
trol devices including PLCs and com-
puters.
DIAGNOSTIC LED
The DRG-SC-AC is equipped with a
dual function LED signal monitor. The
green, front mounted LED indicates
both DC power and input signal status.
Active DC power is indicated by an
illuminated LED. If the input signal is
more than 110% of the full-scale range,
the LED will quickly flash at 8Hz. If this
Note1: All DRG-Series modues are designed and tested to operate in ambient temperatures from 0 to 55
continues to occur, you may wish to mounted on a horizontal DIN rail. When five or more modules are mounted on a vertical rail, circulating air or model
DRG-HS01 Heat Sink is recommended.
change your full-scale input range
setting.
Unless otherwise specified, the
factory presets the Model
DRG-SC-AC as follows:
Input Range: 0-500mVAC
Output: 4-20mA
WARNING: Do not attempt to
change any switch settings with power
applied. Severe damage will result!
The DC power input accepts any DC
source between 9 and 30V, typically a
12V or 24VDC source is used
Refer to Tables 1 through 3 for the
proper switch settings. With power
disconnected, use the switches on
SW1 to select the input type (voltage or
current), on SW2 to select the HI or LO
input ranges, and on SW4 to select the
desired input range. Using the
switches on SW3, select the desired
type of output.
°
C, when