A
Limit Controller
CB100L/CB900L
Thank you for purchasing the RKC instrument. 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.
INSTRUCTION
MANUAL
IMCB08-E4
• 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
• 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.
• All wiring must be completed before power is turned on to prevent
electric shock, instrument failure, or incorrect action. The power
must be turned off before repairing work for input break and output
failure including replacement of sensor, contactor or SSR, and all
wiring must be completed before power is turned on again.
• To prevent instrument damage of 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.
CAUTION
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.
• 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.
ll Rights Reserved, Copyright 1998, RKC INSTRUMENT INC.
RKC INSTRUMENT INC.
®
1. PRODUCT CHECK
CB100L
CB900L
-M∗--/
(1) (2) (3) (4) (5) (6) (7) (8) (9)
Input type: See 9. INPUT RANGE TABLE.
(1)
Range code:
(2)
See 9. INPUT RANGE TABLE.
(3) Limit output
M: Relay contact
(4) Alarm 1 [ALM1], (5) Alarm 2 [ALM2]
N: No alarm
A: Deviation high alarm
B: Deviation low alarm
C: Deviation high/low alarm
D: Band alarm
E: Deviation high alarm with hold action
F: Deviation low alarm with hold action
G: Deviation high/low alarm with hold action
H: Process high alarm
J: Process low alarm
K: Process high alarm with hold action
L: Process low alarm with hold action
(6) Analog output
N: No analog output
7: Current 0 to 20 mA DC
8: Current 4 to 20 mA DC
(7) Communication function
N: No extended function
5: Communication function RS-485 (2-wire system)
D: Contact input
(8) Waterproof/dustproof
N: No waterproof/dustproof
1: Waterproof/dustproof
(9) Case color
N: White
A: Black
Check that power supply voltage is also the same as that specified
when ordering.
Mounting frame (CB100L): 1
Mounting brackets (CB900L): 2 *
Instruction manual (IMCB08-E4): 1
*CB900L waterproof/dustproof option: 4 pieces
<Accessories>
2. MOUNTING
2.1 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: 0 to 50 °C
• Allowable ambient humidity: 5 to 95 % RH
(Absolute humidity: MAX. W. C 29 g/m
(3) Avoid the following 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.
3
dry air at 101.3 kPa)
2.2 Dimensions
CB100L
(
Unit: mm)
9.2
48
48
(1)
*
1
8.2 100
CB900L
(Uni t: mm)
96
9.2
2
*
96
*1 Rubber (option)
*2 Up to four mounting brackets can be used.
For mounting of the instrument, panel thickness must be between 1 to 10 mm.
(When mounting multiple instruments close together, the panel strength should be
checked to ensure proper support.)
Waterproof and dustproof are not effective when instruments are closely spaced.
(1)
*
1
8.2 100
Individual mounting
44.8
+0.6
25
0
45
Close horizontal mounti ng
44.8
61.6
L1=48
n
Number of cont rollers (2
:
Individual mounting
91.8
Close hori zontal mounting
91.8
110.8
L1=96×n−4
n
Number of control lers (2≦n≦6
:
L1
n
3
−
×
+0.8
25
0
92
+0.8
L1
25
0
+0.6
45
25
25
+0.6
0
0
+0.6
45
)
6
≦n≦
0
+0.8
92
30
0
0
+0.8
92
)
2.3 Mounting Procedures
CB100L
1. Prepare the panel cutout as specified in 2.2 Dimensions.
2. Insert the instrument through the panel cutout.
3. Insert the mounting frame into the mounting from the rear of the
instrument.
4. Push the mounting frame forward until the frame is firmly secured
to the panel. (Fig.1)
5. Fix the instrument to the panel by using the two screws. (Fig.2)
Mounting
frame
Screw
Fig.1
The waterproof/dustproof option on the front of the instrument
conforms to IP66
*1
and NEMA4 *2 when mounted on the panel.
Fig.2
For effective waterproof/dustproof, the gasket must be
securely placed between instrument and panel without any
gap. At the same time, be sure to keep the inside of the
control panel from negative pressure. If the gasket is damaged,
please contact RKC sales office or the agent.
*1 IP66: tested by KEMA *2 NEMA4: tested by FM
Loosen the screw of the mounting frame.
Remove the mounting frame from the
case. (Fig.3)
2
When using the mounting
screws, only turn one full
revolution after the screw
touches the panel.
Fig. 3
CB900L
1. Prepare the panel cutout as specified in 2.2 Dimensions.
2. Insert the instrument through the panel cutout.
3. Insert the mounting bracket into the mounting groove of the
instrument. (Fig.1)
4. Pull till click sounds to the direction shown by the arrow. (Fig.2)
5. Tighten up the screw. (Fig.3)
6. The other mounting bracket should be installed the same way
described in 3. to 5.
Mounting
bracket
Fig.1
Fig.2
When the instrument is mounted, always secure with two
Fig. 3
When using the mounting
screws, only turn one full
revolution after the screw
touches the panel.
mounting brackets so that upper and lower mounting brackets
are positioned diagonally.
The waterproof/dustproof option (mounting bracket 4 pieces)
on the front of the instrument conforms to IP65
*1
and NEMA3 *2
when mounted on the panel. For effective waterproof/dustproof,
the gasket must be securely placed between instrument and
panel without any gap. At the same time, be sure to keep the
inside of the control panel from negative pressure. If gasket is
damaged, please contact RKC sales office or the agent.
*1 IP65: tested by KEMA *2 NEMA3: tested by FM
Loosen the screw of the mounting
bracket. Remove the mounting bracket
from the case. (Fig. 4)
Fig. 4
3. WIRING
3.1 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.
Instrument power
Shorten distance between
pitches
- 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.
• About 5 to 6 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.
• This instrument is not furnished with a power supply switch or fuses.
Therefore, if a fuse or power supply switch is required, install close
to the instrument.
- Fuse type: Time-lag fuse
- Recommended fuse rating: Rated voltage 250 V Rated current: 1 A
• For the current input specification, a resistor of 250 Ω (±0.02 %
±10 ppm, 0.25 W or more) must be connected between the input
termin als. This resistor must be provided by the customer.
• Use the solderless terminal appropriate to the screw size.
- Screw size: M3 x 6
- Recommended tightening torque: 0.4 Nm [4 kgfcm]
• For an instrument with 24 V power supply, supply power from a
SELV circuit.
Twist these leadwires
IN
Noise filter
OUT
Minimize
distance
Instrument
power
terminals
IMCB08-E4
3.2 Terminal Configuration
r
A
A
A
+
+
−
A
A
+
+
−
CB100L
Power supply
+
−
NO
Output
5
6
C
L
100 to 240V
N
1 1
2 2
Communication
RS-485
C
24V
DC
L
1
24V
2
N
Output
Analog output
+
−
(Optional)
* Cautions for Communication terminal wiring:
Conduct wiring so that the power supply terminals (screw heads) do
not touch the communication terminal lugs. Especially when two lugs
are connected to one communication terminal for the use of multidrop
connection, much care should be exercised not to touch the powe
supply terminals with the lugs.
Limit output
3
4
It is recommended that the host computer communication line
be isolated from the power supply and earth.
CB900L
Power supply
C
24V
DC
L
1
N
24V
2
C
+
−
L
100 to 240V
N
1 1
2 2
Output
Analog output
+
3
4
−
(Optional)
Output
Limit output
5
NO
6
NO: Normally open
Alarm 2
Alarm 1
Alarm output
7
NO
ALM
8
NO
ALM
9
(Optional)
SG
T/R(A)
T/R(B)
(Optional)
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
Input
RTD input
10
11
12
1
2
3
4
5
6
A
RTD
B
B
13
14
15
10
16
11
17
12
18
Input
Contact input
DI
+
TC input
11
12
7
8
9
13
15
(Optional)
TC
−
larm output
Alarm 2
Input
RTD input
Current input
0 to 20 mA DC
4 to 20 mA DC
13
14
15
16
17
18
19
20
21
22
23
24
Current input
0 to 20 mA DC
4 to 20 mA DC
11
12
NO: Normally open
Alarm 1
A
10
RTD
B
11
B
12
+
11
12
−
Communication
Input
Contact input
+
−
7
NO
ALM
8
NO
ALM
9
(Optional)
TC input
11
12
Voltage input
0 to 5 V DC
1 to 5 V DC
11
12
SG
RS-485
T/R(A)
T/R(B)
(Optional)
DI
+
(Optional)
Voltage input
0 to 5 V DC
1 to 5 V DC
11
IN
12
−
Specifications
Input:
Input type:
Thermocouple:
K, J, R, S, B, E, T, N, PLII, W5Re/W26Re, U, L
Input impedance: Approx. 1 MΩ
RTD: Pt100, JPt100
Voltage: 0 to 5 V DC, 1 to 5 V DC,
0 to 10 V DC (Z-1010)
Current: 0 to 20 mA DC, 4 to 20 mA DC
Sampling cycle: 0.5 seconds
Input range: See Input range table
Limit output:
Relay contact output:
250 V AC, 3A (Resistive load)
1a contact, De-energized output
Electrical life: 300,000 times or more (Rated load)
TC
−
IN
−
13
14
15
13
15
Alarm output (Optional):
Relay contact output:
250 V AC, 1A (Resistive load)
1a contact
Electrical life: 50,000 times or more (Rated load)
Analog output (Optional):
Number of points: 1 point
Out put sign al: 4 to 20 mA DC, 0 to 20 mA DC
Allowable load resistance: 600 Ω or less
Output type: Measured value
Accuracy: ± 0.3 % of span
Resolution: More than 10 bits
Contact input (Optional):
Number of points: 1 point
Input method: Non-voltage contact input
Resistance at OPEN: 500 kΩ or more
Resistance at CLOSE: 10 Ω or less
Function: Reset function is executed when the
mode is changed from OPEN to CLOSE.
Performance:
Display accuracy
(at the ambient temperature 23 °C ± 2 °C):
Thermocouple:
± (0.3 % of display value + 1 digit) or
± 2 °C [4 °F] Whichever is greater
R, S and B input: 0 to 399 °C [0 to 799 °F]
Accuracy is not guaranteed.
T and U input:
−199.9 to −100.0 °C [−199.9 to −158.0 °F]
Accuracy is not guaranteed.
RTD: ± (0.3 % of display value + 1 digit)
or ± 0.8 °C [1.6 °F] Whichever is greater
Voltage/Current: ± (0.3 % of span + 1 digit)
Memory backup:
Backed up by Nonvolatile Memory
Number of write times: Approx. 1,000,000 times
Data storage period: Approx. 10 years
Power:
Power supply voltage:
85 to 264 V AC (Power supply voltage range), 50/60 Hz
Rating: 100 to 240 V AC
21.6 to 26.4 V AC (Power supply voltage range), 50/60 Hz
Rating: 24 V AC
21.6 to 26.4 V DC (Power supply voltage range)
Rating: 24 V DC
Power consumption:
7 VA max. (at 100 V AC), 10 VA max. (at 240 V AC)
5 VA max. (at 24 V AC), 160 mA max. (at 24 V DC)
Weight:
CB100L: Approx. 170 g, CB900L: Approx. 340 g
4. PARTS DESCRIPTION
(Shift & Reset key)
CB100L/CB900L
PV
SV
EXCD
SET
R
KC
(4) (5) (6) (7)
RST
OUT ALM1 ALM2
Measured value (PV) display [Green]
(1)
Displays PV or various parameter symbols.
(2) Set value (SV) display [Orange]
Displays limit set value (SV) and various set values.
(1)
(2)
(3)
Indication lamps
(3)
EXCD lamp [Red]
Lights while a measured value (PV) exceeds the
set value (SV).
OUT lamp (Limit output lamp) [Red]
Lights when limit output is turned on
Alarm output lamps (ALM1, ALM2) [Red]
ALM1: Lights when alarm 1 output is turned on.
ALM2: Lights when alarm 2 output is turned on.
(Set key)
SET
(4)
Used for parameter calling up and set value
registration.
RST
(5)
Shift digits when settings are changed.
The limit output is released (reset).
Reset can occur after momentarily pressing <RST
key or by pressing for one or more seconds as
determined by SL9.
(DOWN key)
(6)
Decrease numerals.
(UP key)
(7)
Increase numerals.
To avoid damage to the instrument,
never use a sharp object to press keys.
IMCB08-E4 3
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