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R8-PA4

P. 1 / 4

EM-9739 Rev.1

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201   Fax: +81(6)6659-8510   E-mail: [email protected]

TOTALIZED PULSE INPUT MODULE, 4 points

(NPN / PNP / Voltage pulse input)

MODEL

R8-PA4

INSTRUCTION MANUAL

BEFORE USE ....

Thank you for choosing M-System. Before use, check the 
contents of the package you received as below.
If you have any problems or questions with the product, 
please contact M-System’s Sales Office or representatives.

■ 

PACKAGE INCLUDES:

  Pulse input module ..................................................... (1)

 MODEL NO.

Confirm that the model number described on the product is 
exactly what you ordered.

 INSTRUCTION MANUAL

This manual describes necessary points of caution when 
you use this product, including installation, connection and 
basic maintenance procedures. 

POINTS OF CAUTION

 CONFORMITY WITH EU DIRECTIVES

• The equipment must be mounted inside a panel.
• The actual installation environments such as panel con

-

figurations, connected devices and connected wires may 
affect the protection level of this unit when it is integrated 
in a panel system.  The user may have to review the CE 
requirements in regard to the whole system and employ 
additional protective measures to ensure CE conformity.

 GENERAL PRECAUTIONS

• Before you remove or mount the unit, turn off the power 

supply and input signal for safety.

  Switches on the side of the module can be set for mainte-

nance only while the power supply is off.  Do not access 
them while the power is supplied.

■ 

ENVIRONMENT

• Indoor use
• When heavy dust or metal particles are present in the air, 

install the unit inside proper housing with sufficient ven-
tilation.

• Do not install the unit where it is subjected to continuous 

vibration.  Do not apply physical impact to the unit.

• Environmental temperature must be within -10 to +55°C 

(14 to 131°F) with relative humidity within 30 to 90% RH 

in order to ensure adequate life span and operation.

 WIRING

• Do  not  install  cables  close  to  noise  sources  (relay  drive 

cable, high frequency line, etc.).

• Do  not  bind  these  cables  together  with  those  in  which 

noises are present.  Do not install them in the same duct.

 EXCITATION SUPPLY

Power output (input terminal): Rated curent 0.1A DC per 
channel (rated current 3 A for internal fuse (slow blow fuse 

i

2

t (A

2

sec) max. 0.31) ,  Total 0.4 A DC

 AND ....

• The unit is designed to function as soon as power is sup

-

plied, however, a warm up for 10 minutes is required for 

satisfying complete performance described in the data 
sheet.

INSTALLATION

 HOW TO MOUNT THE MODULE ON DIN RAIL

A

B

• I/O Module

Confirm that the locking clamps of the I/O module are set.
Insert the module in parallel to the next one while aligning the grooves of 
both modules (A & B in the above figure).
Maintain it perpendicularly to the rail. 

More I/O modules can be added in the same manner.

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