RKC INSTRUMENT FB400 Series Installation Manual Download Page 1

 

Digital Controller

 

 

 

IMR01W01-E1

 

Thank you for purchasing the 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 Quick Operation Manual (IMR01W02-E ). For 
the detail handling procedures and various function settings, please read if necessary 
the following separate manuals. 

 

• 

FB400/FB900 Instruction Manual (IMR01W03-E )  

• 

FB400/FB900 Communication Instruction Manual (IMR01W04-E ) 

 

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

 

 

Product Check 

 
 
 
 
 
 

 

Safety Precautions 

 

 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

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. 

 

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 ambient temperature and ambient 

humidity.

 

• 

Allowable ambient temperature: 

10 to 

+

50 

°

C

 

• 

Allowable ambient humidity:  

5 to 95 % RH   

(Absolute humidity: MAX. W. C 29 g/m

3

 dry air at 101.3 kPa)

 

(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 in the 

panel. 

• 

Provide adequate ventilation space so that heat does not build up. 

• 

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. 

• 

Mount this instrument in the horizontal direction for panel. If you did installation 

except a horizontal direction, this causes malfunction.   

 

1.2 Dimensions 

 

 

 
 
 
 
 
 
 
 
 
 
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

1.3 Procedures of Mounting and Removing 

 

Mounting procedures 

1. 

Prepare the panel cutout as specified in 

1.2

 

Dimensions

.

 

2. 

Insert the instrument through the panel cutout. 

3. 

Insert the mounting bracket into the mounting 
groove of the instrument. (Fig. 1) 

4. 

Push the mounting bracket forward until the bracket 
is firmly secured to the panel. (Fig. 2) 

5. 

Only turn one full revolution after the screw touches 
the panel. (Fig. 3) 

6. 

The other mounting bracket should be installed   
the same way described in 

3

to

 

5

 
 
 
 
 
 
 
 

 

 

The front of the instrument conforms to

 IP66 (NEMA4X) 

when mounted on 

the panel. For effective waterproof/dustproof, the gasket must be securely 
placed between instrument and panel without any gap. If gasket is damaged, 
please contact RKC sales office or the agent. 

 

 

Removing procedures 

1. 

Turn the power OFF. 

2. 

Remove the wiring.   

3. 

Loosen the screw of the mounting bracket. 
(Fig. 4) 

4. 

Lift the latch of the mounting bracket ( ), 
then pull the mounting bracket ( ) to   
remove it from the case. (Fig. 4) 

5. 

The other mounting bracket should be   
removed the same way described in   

3

and

 4

.

 

6. 

Pull out the instrument from the mounting   
cutout while holding the front panel frame   
of this instrument. (Fig. 5) 

 

2. WIRING 

 
 
 
 
 

 
2.1 Wiring Cautions 

• 

For thermocouple input, use the appropriate compensation wire. 

• 

For RTD input, use low resistance lead wire with no difference in resistance 
between the three lead wires. 

• 

To avoid noise induction, keep input 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. 

• 

About five seconds are required as preparation time for contact output every 
time the instrument is turned on. Use a delay relay when the output line is used 
for an external interlock circuit. 

• 

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. 

• 

This instrument is not furnished with a power supply switch or fuse. Therefore, if 
a fuse or power supply switch is required, install close to the instrument.   
Recommended fuse rating: Rated voltage 250 V, Rated current 1 A 
 

Fuse type: Time-lag fuse 

• 

Use the solderless terminal appropriate to the screw size. 
Screw size:   

M3

×

6 (with 5.8

×

5.8 square washer) 

Recommended tightening torque:   
 0.4 

N

m (4 kgf

cm) 

Applicable wire:  Solid/twisted wire of 2 mm

2

 

Recommended dimension:  See fig. 6 
Recommended solderless terminals: 
 

Circular terminal with isolation   

 

(M3 screw, width 5.5 mm, hole diameter 3.2 mm) 

• 

Up to two solderless terminal lugs can be connected to one terminal screw, then 
refer to figure 7.

 

 

 

 
 
 
 
 
 
 
 
 

• 

Caution for the terminal cover usage: 
If each solderless terminal lug touches the terminal cover, remove each projection 
from the terminal cover by manually bending it in front and in rear until broken.

   

(Fig. 8) 

 
 
 
 
 
 
 
 
 
 
 
 
 

   

FB400/FB900

 

Installation Manual (this manual) ···································································1 

*

 

Quick Operation Manual (IMR01W02-E ) ···················································1 

*

 

Parameter List (IMR01W06-E )···································································1 

*

 

Seal (SAP-306 [for Unit and Direct key type 2)·············································· 1 
Mounting bracket (with screw) .......................................................................2 (FB900: 4) 
Case rubber packing (FB400: KFB400-36<1>, FB900: KFB900-36<1>) .....1 

 

Installation 

Manual

 

 

All Rights Reserved, Copyright 

 2004, RKC INSTRUMENT INC. 

φ

 5.9 MAX 

φ

 3.2 MIN 

5.6 mm 

Fig. 6

*1  Case rubber packing 
*2  Terminal cover KFB400-58 <1> (option) [sold separately] 
*3  When cutting out each mounting hole through a panel for individual mounting, observe that   
 

there is no bur or distortion along the panel cutout surface, or there is no bend on the panel   

 

surface. If so, the water resistant characteristics may worsen. 

*4  Remove the case rubber packing. Because of closely mounting the FB400s or FB900s, 
 

protection will be compromised and not meet IP66 (NEMA 4X) by close mounting. 

*5  When controllers are closely mounted, ambient temperature must not exceed 50 

°

C. 

 

 

 

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

Fig.8  Image of how to close the terminal board with the terminal cover and to remove   
 these 

projections. 

Top view 

Terminal cover (option) [sold separately] 

Terminal cover with the projection removed. 

(Example: Image of how to close the terminal board with the terminal
 

cover when each FB900 is mounted side by side.) 

Terminal cover 

This section illustrates the projections to be manually removed from
the terminal cover when each terminal lug touches the cover. 

* The German, French, Italian, Spanish and Chinese versions of the document are also available. 

They can be downloaded from our website. 

Panel thickness: 1 to 10 mm   

(When mounting multiple FB400s close together, the panel   

strength should be checked to ensure proper support.) 

 FB400

(Unit: mm)

L = 48

×

n

n: Number of unit

 

(2 

 n 

 6)

25 45

+

0.6

+

0

30

 

+

0.

+

92

 

Individual mounting 

Close mounting

 

+

0.

+

92

 

L

+

0.6

+

0

*4, *5 

*3 

96

 

48

44.8

 

49.2

 

91.8

 

106.1

 

10.1 60 

70.1 

*1 

*2 

Panel thickness: 1 to 10 mm   

(When mounting multiple FB900s close together, the panel strength should be checked to 

ensure proper support.) 

 FB900

(Unit: mm) 

Close mounting

+

0.

+

92

 

L

+

0.8

+

0

L = 96

×

n

n: Number of unit

 

(2 

 n 

 6) 

*4, *5 

92

+

0.8

+

0

25

30

 

+

0.

+

92

 

Individual mounting 

*3 

96

 

96

10.1

91.8

 

106.1

 

60
70.1

*2

1

*1

91.8

 

(FB900 is used in the above figures for explanation, but the same mounting procedures also apply to FB400.) 

Fig. 2

Fig. 3

Fig. 1

Front panel frame

Fig. 5

Pull out 

Panel 

Fig. 4

 

 

Loosen the screw 

Fig. 7: Image of how to bend each solderless terminal lug   

Panel 

Top view (Example: Image of how to mount each FB900 side by side) 

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