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Ethernet [Modbus/TCP] Communication Converter 

 

 

IMR01Y25-E2

 

Thank you for purchasing this RKC product. In order to achieve maximum 
performance and ensure proper operation of your new instrument, carefully read all 
the instructions in this manual. Please place this manual in a convenient location for 
easy reference. 

 

This manual describes the handling precautions, mounting, wiring and specifications 
only. For the basic operations, see 

COM-JL [For SRZ]

 

Quick Instruction Manual 

(IMR01Y29-E

)

. For the detail handling procedures and various function settings, 

please refer to separate 

COM-JL [For SRZ]

 

Instruction Manual (IMR01Y37-E

)

 

The above manuals can be downloaded from our website: 
URL: http://www.rkcinst.com/english/manual_load.htm 

 

 

Product Check 

 

 

 

 

 

 

Safety Precautions 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 This product is intended for use with industrial machines, test and measuring 

equipment. 
(It is not designed for use with medical equipment and nuclear energy.) 

  This is a Class A instrument. In a domestic environment, this instrument may cause 

radio interference, in which case the user may be required to take adequate 
measures. 

 This instrument is protected from electric shock by reinforced insulation. Provide 

reinforced insulation between the wire for the input signal and the wires for 
instrument power supply, source of power and loads. 

  Be sure to provide an appropriate surge control circuit respectively for the following:   

 

If input/output or signal lines within the building are longer than 30 meters. 

 

If input/output or signal lines leave the building, regardless the length. 

  This instrument is designed for installation in an enclosed instrumentation panel. All 

high-voltage connections such as power supply terminals must be enclosed in the 
instrumentation panel to avoid electric shock by operating personnel. 

 All precautions described in this manual should be taken to avoid damage to the 

instrument or equipment. 

  All wiring must be in accordance with local codes and regulations. 

  To prevent instrument damage or failure, protect the power line and the input/output 

lines from high currents with a protection device such as fuse, circuit breaker, etc. 

 Prevent metal fragments or lead wire scraps from falling inside instrument case to 

avoid electric shock, fire or malfunction. 

 Tighten each terminal screw to the specified torque found in the manual to avoid 

electric shock, fire or malfunction. 

 For proper operation of this instrument, provide adequate ventilation for heat 

dispensation. 

 Do not connect wires to unused terminals as this will interfere with proper 

operation of the instrument. 

  Turn off the power supply before cleaning the instrument. 

 Do not use a volatile solvent such as paint thinner to clean the instrument. 

Deformation or discoloration will occur. Use a soft, dry cloth to remove stains from 
the instrument. 

 To avoid damage to instrument display, do not rub with an abrasive material or 

push front panel with a hard object. 

  Do not connect modular connectors to telephone line. 

NOTICE 

 

This manual assumes that the reader has a fundamental knowledge of the 
principles of electricity, process control, computer technology and communications.

 

 

The figures, diagrams and numeric values used in this manual are only for purpose 
of illustration.

 

 

RKC is not responsible for any damage or injury that is caused as a result of using 
this instrument, instrument failure or indirect damage.

 

 RKC is not responsible for any damage and/or injury resulting from the use of 

instruments made by imitating this instrument. 

 

Periodic maintenance is required for safe and proper operation of this instrument. 
Some components have a limited service life, or characteristics that change over 
time.

 

 

Every effort has been made to ensure accuracy of all information contained herein. 
RKC makes no warranty expressed or implied, with respect to the accuracy of the 
information. The information in this manual is subject to change without prior notice.

 

 

No portion of this document may be reprinted, modified, copied, transmitted, 
digitized, stored, processed or retrieved through any mechanical, electronic, optical 
or other means without prior written approval from RKC.

 

 
 

1. MOUNTING 

 

 

 

 

 

 

 

1.1 Mounting Cautions 

(1) This instrument is intended to be used under the following environmental conditions. 

(IEC61010-1)

 [OVERVOLTAGE CATEGORY II, POLLUTION DEGREE 2] 

(2)  Use this instrument within the following environment conditions. 

  Allowable ambient temperature: 

10 to 

50 

  Allowable ambient humidity:   

5 to 95 %RH   

(Absolute humidity: MAX. W. C 29.3 g/m

3

 dry air at 101.3 kPa) 

 Installation 

environment conditions: 

Indoor use   

 

Altitude up to 2000 m 

(3)  Avoid the following conditions when selecting the mounting location: 

  Rapid changes in ambient temperature which may cause condensation. 

  Corrosive or inflammable gases. 

  Direct vibration or shock to the mainframe. 

  Water, oil, chemicals, vapor or steam splashes. 

  Excessive dust, salt or iron particles. 

  Excessive induction noise, static electricity, magnetic fields or noise. 

  Direct air flow from an air conditioner. 

  Exposure to direct sunlight. 

  Excessive heat accumulation. 

(4)  Take the following points into consideration when mounting this instrument. 

  Ensure at least 50 mm space on top and bottom of the instrument for maintenance and 

environmental reasons. 

  Do not mount this instrument directly above equipment that generates large amount of 

heat (heaters, transformers, semi-conductor functional devices, large-wattage resistors).

 

  If the ambient temperature rises above 50 

C, cool this instrument with a forced air fan, 

cooler, or the like. However, do not allow cooled air to blow this instrument directly. 

  In order to improve safety and the immunity to withstand noise, mount this instrument as 

far away as possible from high voltage equipment, power lines, and rotating machinery. 

High voltage equipment: 

Do not mount within the same panel. 

Power lines: 

Separate at least 200 mm. 

Rotating machinery: 

Separate as far as possible. 

(5)  This instrument is permanently connected to equipment, please take the following points. 

  A switch or circuit-breaker shall be included in the building installation. 

  It shall be in close proximity to the equipment and within easy reach of the operator. 

  It shall be marked as the disconnecting device for the equipment. 

 

 

1.2 Dimensions 

 

3

30

109.5

 

12

5

 

78

 

5

(Unit: mm)

 

1.3 DIN rail Mounting 

 

Mounting procedures 

1. 

Pull down the mounting bracket at the bottom of the instrument (A). Attach the 
hooks on the top of the instrument to the DIN rail and push the lower section into 
place on the DIN rail (B).

 

2. 

Slide the mounting bracket up to secure the instrument to the DIN rail (C).

 

 

 

 

 

 

 
 
 
 
 
 
 
 

 

 

 

Removing procedures 

Pull down a mounting bracket with a blade screwdriver (A). Lift the instrument from 
bottom, and take it off (B).

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 

 

1.4 Panel Mounting 

 

Mounting procedures 

1. 

Pull down the mounting bracket (A) until locked and that a mounting hole appears.

 

2. 

Prepare one mounting bracket per instrument (B) sold separately (KSRX-55) and 
then insert it in the rear of the terminal board at top of the instrument until locked 
but a mounting hole does not disappear.

 

3. 

Mount each module directly on the panel with screws which are inserted in the 
mounting holes of the top and bottom mounting brackets. 

Recommended tightening torque: 0.3 N

m (3 kgf

cm) 

The customer needs to provide the M3 size screws. Select the screw length 

that matches the mounting panel. 

 

 

(A) Pull down 

(B) Insert 

Mounting bracket
(Sold separately)

(KSRX-55)

Mounting

holes 

Mounting dimensions

 

130.5

 

 0.

2

 

M3

(Unit: mm)

 

 

 

2. WIRING 

 
 
 
 
 
 

2.1 Wiring Cautions 

 

To avoid noise induction, keep communication signal wire away from instrument 
power line, load lines and power lines of other electric equipment.

 

  If there is electrical noise in the vicinity of the instrument that could affect 

operation, use a noise filter. 

 Shorten the distance between the twisted power supply wire pitches to 

achieve the most effective noise reduction. 

 Always install the noise filter on a grounded panel. Minimize the wiring 

distance between the noise filter output and the instrument power supply 
terminals to achieve the most effective noise reduction. 

  Do not connect fuses or switches to the noise filter output wiring as this will 

reduce the effectiveness of the noise filter. 

  Power supply wiring must be twisted and have a low voltage drop. 

  For an instrument with 24 V power supply, supply power from a SELV circuit. 

  A suitable power supply should be considered in the end-use equipment. The 

power supply must be in compliance with a limited-energy circuits (maximum 
available current of 8 A). 

  Use the solderless terminal appropriate to the screw size (M3). 

 

 

 

 

 

 

2.2 Terminal Configuration 

 

 

 

24 V 

DC 

12 

8

FG

Controller 
communication

T/R(B)

T/R(A)

RS-485

1

5

SG

4

Upper-side 

terminal 

Lower-side 

terminal

Power supply 

Ground 

2

1

6

5

4

14

13

12

11  10

9

8

3

: The part of internal wiring

 

 

 

As controller communication terminal Nos. 1, 4 and 5 are internally connected 
to terminal Nos. 3, 6 and 7, any terminals can be used. 

 

As ground and power supply terminal Nos. 8, 9 and 12 are internally 
connected to terminal Nos. 10, 11 and 14, any terminals can be used.

 

 

Terminal No. 2 and No. 13 is not used.

 

 

 

 

 

 

 

 

 

 

 

 

(Continued on the next page 

)

 

COM-JL

 

COM-JL [For SRZ]

 

Installation Manual (IMR01Y25-E2) ......................................... 1 

COM-JL [For SRZ]

 

Quick Instruction Manual (IMR01Y29-E

) .............................. 1 

COM-JL [For SRZ]

 

Communication Data List (IMR01Y33-E

) ............................. 1 

All Rights Reserved, Copyright 

 2007, RKC INSTRUMENT INC. 

(B) Push

Mounting

bracket

DIN rail

(A) Pull down 

(C) Locked 

(A) Pull down 

(B) Lift and 

take off 

 

5.9 mm or less 

3.2 mm or more 

Recommended tightening torque:

 

0.4 N

m (4 kgf

cm) 

 

 

   

 An external protection device must be installed if failure of this instrument 

could result in damage to the instrument, equipment or injury to personnel. 

 All wiring must be completed before power is turned on to prevent electric 

shock, fire or damage to instrument and equipment. 

 This instrument must be used in accordance with the specifications to 

prevent fire or damage to instrument and equipment. 

 This instrument is not intended for use in locations subject to flammable or 

explosive gases. 

 Do not touch high-voltage connections such as power supply terminals, 

etc. to avoid electric shock. 

 RKC is not responsible if this instrument is repaired, modified or 

disassembled by other than factory-approved personnel. Malfunction can 
occur and warranty is void under these conditions. 

!

 

WARNING 

CAUTION

 

   
   

To prevent electric shock or instrument failure, always turn off the 
power before mounting or removing the instrument. 

!

 

WARNING 

   
   

To prevent electric shock or instrument failure, do not turn on the 
power until all the wiring is completed. 

!

 

WARNING

Installation

Manual

[For SRZ]

 

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