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DRP-8500 Series Low Cost Analog
to Frequency Modules
for Micro PLC Digital Inputs
DRP-8500 Series Connect
to Micro PLCs High Speed
Counter Inputs
DRP-8600 Series Connect
to Micro PLCs 24 VDC
Logic Inputs
Voltage, Current, RTD,
Thermocouple and
Strain Gage Inputs
DIN Rail Mountable
The DRP-8500 Series modules offer
a low cost analog I/O solution for
micro PLCs. The series is ideal for
discrete automation applications
requiring one or two analog I/O
channels. All models in the series
interface with the PLC high speed
counter inputs or pulse outputs.
Digital signal pulse-width is fixed at
50 µsec. They will accept a variety
of analog inputs, such as
thermocouple, RTD, strain gage,
voltage, and current. Some DRP8500 models can be connected
to pulse outputs from a PLC, and
will then provide an analog output.
The DRP-8500 series modules have
an isolated floating optocoupler
transistor which provides DC
isolation from the input, output and
DC power. The output transistor is
fully floating allowing either source
or sink connection to the PLC. The
DRP-8500 resolution is 12 bits.
The DRP-8600 Series modules are
designed to interface with the lowspeed 24 Vdc logic inputs of a PLC
for applications requiring additional
analog inputs. The DRP-8600
modules output a square wave up to
500 Hz with a 50-50 duty cycle,
allowing the PLC to count the
frequency producing better than 8bit resolution, 1 part in 500. The
DRP-8600 module has an isolated
floating optocoupler transistor which
provides DC isolation from the input,
output and DC power. The output
transistor is fully floating allowing
either source or sink connection to
the PLC.
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All modules are housed in a
plastic case with a built-in Ufoot for mounting on standard
DIN rails. Connections are
made to screw clamp terminals
that accept wire sizes 22 AWG
to 16 AWG.
Connections:
Screw terminals,
22 to 16 AWG
Power:
24 volts nominal
Size:
42 H x 27 W x 96 mmL
(1.65 x 1.06 x 3.78")
Common Specifications
(contact engineering for
Weight:
85 g (3 oz)
detailed specifications)
DRP-8500 Series
shown smaller
than actual size
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Model Number Input Output
Analog to Frequency (High Speed Counter Input)
DRP-8505 4 mA to 20 mA 1,000 to 5,000 Hz from floating
DRP-8506 0 to 5Vdc 0 to 5,000 Hz from floating optocoupler
DRP-8507 0 to 10Vdc 0 to 5,000 Hz from floating optocoupler
optocoupler
Frequency to Analog (High Speed Counter Input)
DRP-8508 1000 to 5000 Hz optocoupler diode 4 to 20 mA
DRP-8509 0 to 5000 Hz optocoupler diode 0.1 to 5 Vdc
DRP-8510 0 to 2000 Hz optocoupler diode 0.05 to 5 Vdc
DRP-8513 400 to 2000 Hz optocoupler diode 20 mA
DRP-8514 0 to 2000 Hz optocoupler diode 10 Vdc
(7 mA into 3.3 KΩ, 20µS pulse width min)
(7 mA into 3.3 KΩ, 20µS pulse width min)
(7 mA into 3.3 KΩ, 20µS pulse width min)
(7 mA into 3.3 KΩ, 20µS pulse width min)
(7 mA into 3.3 KΩ, 20µS pulse width min)
Thermocouple to Frequency (High Speed Counter Input)
DRP-8511 Type J T/C 0 to 500°C 100 to 5100 Hz from floating optocoupler
DRP-8512 Type K T/C 0 to 500°C 100 to 5100 Hz from floating optocoupler
RTD to Frequency (High Speed Counter Input)
DRP-8540 Platinum RTD -100 to +400°C 100 to 5100 Hz from floating optocoupler
100 ohm α= 0.00385
2 or 3 Wire Connection
Strain Gage to Frequency (High Speed Counter Input)
DRP-8555 0 to 50 mV Differential Signal 0 to 5 KHz from floating optocoupler
from full bridge Strain Gage,
10 V excitation provided
Analog to Frequency (Low Speed Pulse Input)
DRP-8605 4-20 mA 100-500 Hz from floating optocoupler
DRP-8606 0-5 Vdc
DRP-8607 0-10 Vdc 0-500 Hz from floating optocoupler
Type J T/C to Frequency Converters(Low Speed Pulse Input)
DRP-8611 Type J T/C 0 to 1000°C 10-1100 Hz from floating optocoupler
DRP-8612 Type K T/C 0 to 1250°C 5 Hz to 630 Hz from floating optocoupler
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