MODEL: R3-PA4A
Remote I/O R3 Series
HIGH SPEED TOTALIZED PULSE INPUT MODULE(4 points, isolated)
27.5 [1.08]

130[5.12]

109[4.29]
mm [inch]

Internal power: Via the Installation Base (model: R3-BSx)
Screw terminal: Nickel-plated steel
Isolation: Input 1 to input 2 to input 3 to input 4 to internalbus or internal power
Input gain: Selectable with the side DIP SW
RUN indicator: Bi-color (red/green) LED;
Red when the bus A operates normally;
Green when the bus B operates normally;
Amber when both buses operate normally.
ERR indicator: Bi-color (red/green) LED;
Red with input abnormality;
Green in normal operating conditions.
Count reset: Via DIP switches on the side

INPUT SPECIFICATIONSMODEL: R3–PA4A[1][2]ORDERING INFORMATION• Code number: R3-PA4A[1][2]Specify a code from below for each of [1] and [2].
(e.g. R3-PA4AW/Q)• Specify the specification for option code /Q(e.g. /C01/SET)NO. OF CHANNELS
4A: 4 channels, high speed totalized pulse input[1] COMMUNICATION MODE
S: Single
W: Dual[2] OPTIONS
blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)/C01: Silicone coating/C02: Polyurethane coating/C03: Rubber coating
EX-FACTORY SETTING/SET: Preset according to the Ordering Information Sheet(No. ESU-8387)

GENERAL SPECIFICATIONSConnection
Internal bus: Via the Installation Base (model: R3-BSx)
Input: M3 separable screw terminal (torque 0.5 N·m)

■ Sensor Excitation
Voltage: 12 V DC ±10 %Current: 15 mA
Current limiting circuit: Approx. 30 mA■MAXIMUM FREQUENCY: 100 kHz
Minimum pulse width requirement: 5 μsec. for both ON andOFF■DIVIDING RATIO: 1 – 50000 (programmable using theR3CON PC Configurator software; factory setting ‘1’)
Firmware Version 0.04 or lower versions do not have thisfeature. Confirm the firmware version using the R3CON.
■COUNT RANGE: 1 – 100 000 000 (0 at reset)
Count at overflow: Reset and restart at ‘1.’
Min. and max. pulse range selectable using the R3CON PC
Configurator Software. Refer to the R3CON Users Manual fordetailed information.
Recount start value at over flow: 0 or 1
Maximum count: 1000 – 800 000 000■DETECTING LEVEL
Detecting level: 15 – 100 %(of voltage across the terminals)
Factory setting: 50 % (programmable using the R3CON PC
Configurator software)
Note 1. Each channel has three sets of input terminals.
Input terminal 1: 2 – 5, 7 – 10, 12 – 15, 17 – 20
Input terminal 2: 3 – 5, 8 – 10, 13 – 15, 18 – 20
Input terminal 3: 4 – 5, 9 – 10, 14 – 15, 19 – 20
Note 2. Gain 1 or Gain 2 selectable with the side DIP SW.
Note 3. Measured as 0 % below 15 % of the range.
■THRESHOLD
Pulse logic is detected by comparing input pulse voltage
and the detecting level. Detecting ‘Rise’ or ‘Sink’ can beswitched by using the R3CON PC Configurator software;
factory setting ‘Rise’)■ Open Collector (input terminal 3, gain 1)
Sensor excitation: 12 V DC
Pull-up resistance: 20 kΩ (shorted across 1 – 3, 6 – 8, 11 –R3-PA4A SPECIFICATIONS

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ES-8387 Rev.10 Page 1/5

MODEL: R3-PA4A
13, 16 – 18 respectively)
ON voltage: ≤ 1.5 V (≤ 2 kΩ recommended)
OFF voltage: ≥ 2.5 V (≥ 20 kΩ recommended)(Set detecting level 50 % when the saturation voltage is not
greater than 0.8 V, set 70 % when the saturation voltage is
between 0.8 to 1.5 V.)■ Voltage Pulse (input terminals 1 and 2)
Waveform: Square, sine or similar waveforms
Input impedance: 100 kΩ minimum at input terminal 1
20 kΩ minimum at input terminal 2
Operational voltage across the terminals:
0 – 50 V (input terminal 1, gain 1)
0 – 25 V (input terminal 1, gain 2)
0 – 12 V (input terminal 2, gain 1)
0 – 6 V (input terminal 2, gain 2)

procedure because the module does not start counting with
ON state.

INSTALLATION
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: Installation Base (model: R3-BSx)
Weight: 200 g (0.44 lb)

PERFORMANCE
Data allocation: 8
Current consumption:
80 mA (with no load at the sensor excitation)
130 mA (15 mA at each excitation)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute (input 1 to input
2 to input 3 to input 4 to internal bus or internal power)2000 V AC @ 1 minute (power input to FG; isolated on thepower supply module)

FUNCTIONS■ MANUAL COUNT RESET
1) Remove Network Module or its cables and interrupt
communication with other devices.
2) Turn ON the Count Reset SW.
3) Return the module to the base and turn the power supplyon.
4) ERR LED turns on and the module starts resetting its
counter. When the resetting is complete, the LED turns togreen. DO NOT remove the power while the red LED is on.
The RUN LED starts blinking at the same time.
5) After the green LED is confirmed, turn the power supplyoff.
6) Turn OFF the Count Reset SW.
7) Return the Network module onto the base and turn thepower supply on.
Note: Count Reset SW must be turned OFF after thisR3-PA4A SPECIFICATIONS

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MODEL: R3-PA4A
EXTERNAL VIEW
■FRONT VIEW

■SIDE VIEW

RUN LEDERR LED
111213141516171819201SW3234321456SW2GainON78876543219SW187654321ONCount ResetON10Set the Count Reset SW to OFF to start counting.

OUTPUT DATA DESCRIPTIONSADDRESS+0+1+2+3+4+5+6+7CONTENTS
Input 1 totalized value (lower 16 bits)
Input 1 totalized value (upper 16 bits)
Input 2 totalized value (lower 16 bits)
Input 2 totalized value (upper 16 bits)
Input 3 totalized value (lower 16 bits)
Input 3 totalized value (upper 16 bits)
Input 4 totalized value (lower 16 bits)
Input 4 totalized value (upper 16 bits)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
27.5 [1.08]

109 [4.29]
POSITIONING
GUIDE

12131415161718192012320–M3SCREW

456786.2[.24]

130 [5.12]

11910TERMINAL
COVER

R3-PA4A SPECIFICATIONS

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MODEL: R3-PA4A
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
RUN LED ERR LED DIP SW

Isolation
SensorExcitation

Communication
Circuit

BUS CONNECTOR

EXC + 1Input
Circuit

INP TERM. 1 2Input 1
INP TERM. 2 3

INTERNAL BUS A
INTERNAL BUS B*

INTERNAL POWER

INP TERM. 3 4
COM 5Isolation
SensorExcitation

EXC + 6

Input
Circuit

INP TERM. 1 7
Input 2ControlCircuit

INP TERM. 2 8
INP TERM. 3 9
COM 10Isolation
SensorExcitation

EXC + 11

Input
Circuit

INP TERM. 1 12
Input 3
INP TERM. 2 13
INP TERM. 3 14
COM 15Isolation
SensorExcitation

EXC + 16

Input
Circuit

INP TERM. 1 17
Input 4
INP TERM. 2 18
INP TERM. 3 19
COM 20*For dual redundant communication.

Input Connection Example (Input 1)■ Open Collector
1212V DC20kΩ

347.5kΩ1kΩ5■ Voltage Pulse input• Operational voltage across the terminals: 0 − 50V, 0 − 25V++3PWR+12• Operational voltage across the terminals: 0 − 12V、0 − 6V

100kΩ

212V DC
20kΩ

1PWR +

31kΩ

100kΩ
12V DC
20kΩ
1kΩ

447.5kΩ–57.5kΩ–

5R3-PA4A SPECIFICATIONS

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MODEL: R3-PA4ASpecifications are subject to change without notice.

R3-PA4A SPECIFICATIONS

MG CO., LTD.
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ES-8387 Rev.10 Page 5/5