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Field Configurable
A/OUT
Limit Alarm Modules
A/IN
DI/O
DRG Series
U Models Available for
Thermocouples, RTDs,
DC and AC Voltage
and Current
U Easy Field
Configurable Ranges
U Adjustable Setpoints
Programmable HI
or LO and Failsafe
or Non-Failsafe
The DRG-AR Series modules
are a family of DIN rail mount limit
alarms with dual setpoints and
two contact closure outputs. The
field configurable input and alarm
functions offer flexible setpoint
capability. Modules are available
for a variety of input types including
thermocouples, RTDs, DC and AC
current and voltages.
Each module can be set to a
number of input ranges via an input
selector switch. The alarm points
and dead band are adjusted by
potentiometers.
Diagnostic LEDs
All modules are equipped with
3 front panel LEDs. The first is a
dual function LED labeled input.
This green LED indicates line power
and input signal status. Two red
LEDs indicate the relay state for
each setpoint. An illuminated red
LED indicates the tripped condition.
Output
The DRG-AR Series modules are
equipped with two SPDT relays,
rated at 120 Vac or 28 Vdc at
5 amperes. Each of these relays
is independently controlled by the
field configurable setpoint and
deadband.
Model Input Type
DRG-AR-AC AC Voltage and Current
DRG-AR-DC DC Voltage and Current
DRG-AR-RTD RTD
DRG-AR-TC Thermocouple
Operation
The field configurable limit alarm
setpoints can be configured for
HI or LO, failsafe or non-failsafe
operation. Each of the setpoints has
a respective HI or LO deadband.
In a tripped condition, the setpoint
is exceeded and the appropriate
red LED will illuminate. The trip will
reset only when the process falls
below the HI deadband or rises
above the low deadband. In failsafe
operation, the relay is energized
when the process is below the HI
setpoint or above the LO setpoint
(opposite for non-fail-safe). In the
fail-safe mode, a power failure
results in an alarm state output.
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Dynamic DeadBand
LSI circuitry in the DRG-AR Series
prevents false trips by repeatedly
sampling the input. The input must
remain beyond the setpoint for
100 milliseconds to qualify as a
valid trip condition. Likewise, the
input must fall outside the
deadband and remain there for
100 milliseconds to return the alarm
to an untripped condition. This,
effectively, results in a dynamic
deadband.
Specifications
DRG-AR-AC
Range (Voltage Mode):
100 mV to 200 Vac
Impedance (Voltage Mode):
>100KΩ
Overload (Voltage Mode):
300 Vac, max.
Range (Current Mode):
10 mA to 100 mAAC
Impedance (Current Mode):
20Ω, typical
Overcurrent (Current Mode):
200 mAAC
Overvoltage (Current Mode):
60V peak
Frequency Range: 40 to 400 Hz
Limit Differentials (Deadbands):
>50 mV/5 mA: 0.25% to 5% of span
<50 mV/5 mA: 1% to 5% of span
Setpoint Repeatability (Constant
Temperature): 0.2% of full scale
DRG-AR-DC
Range (Voltage Mode):
10 mV to ±200 V
Impedance (Voltage Mode):
>100KΩ
Overload (Voltage Mode):
200 VRMS, max.
Range (Current Mode):
1 mA to ±100 mA
Impedance (Current Mode):
20Ω, typical
Overcurrent (Current Mode):
170 mA RMS max.
Overvoltage (Current Mode):
60 Vdc
Limit Differentials (Deadbands):
>50 mV/5 mA: 0.25% to 5% of span
<50 mV/5 mA: 1% to 5% of span
Setpoint Repeatability
(constantÁtemp):
>50 mV/5 mA: 0.1% of full scale
<50 mV/5 mA: 0.2% of full scale
Excitation:
24 Vdc, 20 mA maximum
321
654
110.2
(4.34)
32 mm RAIL
105.2
(4.14)
88.5
35 mm RAIL
(3.48)
DIMENSIONS ARE IN MM (INCHES)
DRG-SC-RTD:
Sensor Types: RTD, Pt100, Pt500,
Pt1000 (a = 0.00385); Cu10,
Cu100, Ni 120, Ni Fe 604
Sensor Connection: 3 wire
Range: See Range Table
Excitation Current: <2 mA for
Pt100, Pt500, Pt1000; <5mA for
Cu100, Ni 120 or Ni Fe 604
Lead Wire Resistance: 40%
of base sensor resistance or 100Ω
(whichever is less), max. per lead
Lead Wire Effect: Less than
1% of the maximum input
temperature span
Limit Differentials (Deadbands):
1.0 to 5% of span
Setpoint Repeatability (Constant
Temperature): ±0.2% of full scale
DRG-SC-TC
Ranges: See Range Table
Bias Current (Burnout Detection):
<1.5 microamp
Impedance: >1MΩ
Overvoltage: ±10 V differential
Limit Differentials (Deadbands):
0.25 to 5% of span
Setpoint Repeatability (Constant
Temperature): 0.2% for temp
> 0°C. 0.3% for temp < 0°C
17,7
(.70)
90.0
(3.54)
SPECIFICATIONS COMMON
TO ALL MODULES
Relay Contacts
2 SPDT (2 form C) Relays
1 Relay per setpoint
Current Rating: 120 Vac: 5A,
240 Vac: 2A, 28 Vdc: 5A
Material: Silver-Cadium Oxide
Electrical Life: 105 operations
Isolation: 1800 Vdc between
input, contacts and power
RESPONSE TIME
Dynamic Deadband: Relay status
will change when proper setpoint
condition exists for 100 msec
Normal Mode (Analog Filtering):
<250 msec, (10-90%)
Mounting: Standard 32mm
or 35mm DIN rail
Wire Termination: Screw:
Termination for 12-22 AWG
ESD Susceptibility: Meets IEC
801-2, Level 2 (4 KV)
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: 9-30 Vdc, 1.5 W typical,
2.5 W max
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AC Voltage or Current
Input Limit Alarm
DRG-AR-AC
The DRG-AR-AC is a DIN rail mount, AC voltage
or AC current input limit alarm with dual setpoints
and two contact closure outputs. Input voltage
spans from 100 mVac to 200 Vac and input
current spans from 10 mAAC to 100 mAAC can
be field configured. For current spans of 1 to 5
Amps a 0.1Ω (5 W) shunt resistor
(Model# DRG-C006) is available.
Specifications
INPUT RANGES
Voltage: 100 mVAC, 200 mVac, 500 mVac,
1 Vac, 2 Vac, 5 Vac, 10 Vac, 20 Vac, 50 Vac,
100 Vac, 200 Vac
Current: 10 mAAC, 20 mAAC, 50 mAAC,
100 mAAC
Accessories
To Order
Model No. Description
DRG-AR-AC AC volt/current limit alarm
Each DRG-AR-DC is supplied with a complete user’s manual.
Ordering Example: DRG-AR-AC with one DRN-PS-1000 power
supply and RAIL-35-2 DIN rail.
Input Limit Alarm
DRG-AR-RTD
The DRG-AR-RTD is a DIN rail mount, RTD input
imit alarm with dual setpoints and two contact closure
outputs. The module features up to 8 temperature
ranges for each RTD type.
To Order
Model No. Description
DRG-AR-RTD RTD input limit alarm
Each DRG-AR-RTD is supplied with a complete user’s manual.
Ordering Example: DRG-AR-RTD with one DRN-PS-1000 power
supply and RAIL-35-2 DIN rail.
Model No. Description
RAIL-35-1 35 mm (1.4") DIN rail, 1 m (3.3') length
RAIL-35-2 35 mm (1.4") DIN rail, 2 m (6.6') length
DRG-C006 0.1Ω, 5 W shunt resistor
DRN-PS-1000 DIN rail mount power supply, 95 to 240 Vac
input, 24 Vdc @ 1 A output
Input Ranges
RTD Type Temperature Ranges (°C)
Pt100, 500, 1000 0 to 50, -50 to 50, 0 to 100, -100 to 100, (a = 0.00385), 0 to 250, -200 to 250, 0 to 550, 0 to 850
Cu10 25 to 70, -30 to 70, 25 to 120, -70 to 120, 25 to 260, -200 to 260
Cu100 25 to 75, -25 to 75, 25 to 150, -100 to 150, 25 to 260, -200 to 260
Ni120 -30 to 30, -80 to 30, -30 to 100, -30 to 200, -30 to 320
NiFe604 -40 to 0, -40 to 50, -200 to 50, -200 to 100, -200 to 240
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Thermocouple Input
Limit Alarm
DRG-AR-TC
The DRG-AR-TC is a DIN rail mount, thermocouple
input limit alarm with dual setpoints and two contact
closure outputs. The module features up to six
temperature ranges for each thermocouple type to
ensure accuracy and maximize setpoint resolution.
A bipolar switch is provided for temperature ranges
below 0°C. The DRG-AR-TC is configurable as a
single or dual setpoint alarm, with HI or LO trips,
upscale or downscale burnout detection and failsafe
or non-failsafe operation.
To Order
Model No. Description
DRG-AR-TC Thermocouple input limit alarm
Each DRG-AR-TC is supplied with a complete user’s manual.
Ordering Example: DRG-AR-TC with one DRN-PS-1000 power
supply and RAIL-35-2 DIN rail.
Accessories
Model No. Description
DRN-PS-1000 DIN rail mount power supply,
95 to 240 Vac input, 24 Vdc @ 1A output
RAIL-35-1 35 mm (1.4") DIN rail, 2 m (3.3') length
RAIL-35-2 35 mm (1.4") DIN rail, 2 m (6.6') length
Input Ranges
T/C Temperature Ranges (°C)
B 0 to1490, 0 to 1820
E 0 to 150, 0 to 290, 0 to 660, 0 to 1000,
-270 to 150, -270 to 290
J 0 to 190, 0 to 350, 0 to 760, -210 to 190,
-210 to 350
K 0 to 250, 0 to 480, 0 to 1280, 0 to 1372,
-270 to 250, -270 to 480
R 0 to 970, 0 to 1690, 0 to 1760
S 0 to 1050, 0 to 1750
T 0 to 210, 0 to 390, -270 to 210, -270 to 390
DC Voltage and Current Input Limit Alarm
The DRG-AR-DC is a DIN rail mount, DC voltage
and DC current input limit alarm with dual setpoints
and two contact closure outputs. Input voltage spans
from 10 mV to 200 V and input current spans from
1 mA to 100 mA can be field configured. Bipolar
inputs are also accepted. The module also features
24 Vdc voltage source (isolated from line power) for
transducer excitation.
DRG-AR-DC
Specifications
INPUT RANGES (UNIPOLAR & BIPOLAR)
Voltage: 10 mV, 20 mV, 50 mV, 100 mV, 200 mV,
500 mV, 1 V,2 V, 5 V, 10 V, 20 V, 50 V, 100 V, 200 V
Current: 1 mA, 2 mA, 5 mA, 10 mA, 20 mA, 50 mA,
100 mA
To Order
Model No. Description
DRG-AR-DC RTD input limit alarm
Each DRG-AR-DC is supplied with a complete user’s manual.
Ordering Example: DRG-AR-DC with one DRN-PS-1000 power
supply and RAIL-35-2 DIN rail.
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