Model
CJ1W-TS561
Thermocouple input unit
INSTRUCTION SHEET
Thank you for purchasing an OMRON product. Read this
instruction sheet thoroughly and familiarise yourself with the
functions and characteristics of the product before using it.
To ensure safe and correct use of this Unit, also read the
Operation- and Programming Manuals for your CJ1 PLC system.
Keep this instruction sheet for future reference.
OMRON MANUFACTURING OF THE NETHERLANDS B.V.
OMRON Corporation 2004
All Rights Reserved
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General Specifications
Unit classification
CJ-series Basic I/O Unit
Compatible Racks
CJ-series CPU Rack or
CJ-series Expansion Rack
Max. number of
Units
10 Units/Rack max.
(This requires a CJ1G or CJ1H CPU)
CPU Unit data area
for inputs
Basic I/O area CIO0000 – 0999
(3, 4 or 6 words allocated in IO Table)
Insulation resistance
20 M
Ω
min. (at 500 V DC) between
input terminals and PLC I/O bus.
Dielectric Strength
500 V AC, 50/60 Hz for 1 min. (detection
current: 1 mA), between Input terminals
and PLC I/O bus.
Internal current
consumption
220 mA max., 5 V DC,
from the PLC I/O bus.
Dimensions
31 x 90 x 65 mm (W x H x D)
Weight
150 g max.
Other
Other general specifications conform to
the CJ-series general specifications.
See Operation Manual W393.
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Characteristics
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Unit Description
Thermocouple input
K-type or J-type (IEC 60584)
Number of inputs
1 to 6
Measurement range
K-type: -200.0 to +1300.0 °C
J-type: -100.0 to +850.0 °C
Indication resolution
0.1 °C
Cold junction
compensation
- Accuracy
Internal measurement of terminal
temperature, once in each scan cycle.
± 2.0 °C in a stable temperature
environment (no direct heat or airflow).
Temperature value
Data representation
16-bit signed integer in units of 0.1 °C:
#F830 = -200.0 °C, #32C8 = +1300.0 °C
Indication accuracy *
over full operational
range (0 – 55 °C
ambient temperature)
± 0.5 % of indicated value or ± 0.7 °C
(whichever is larger) ± 1 digit max.
±2.0 °C ± 1 digit max. using a K-type
thermocouple below –100 °C.
Input response time
(per active input)
40 ms (100 Hz suppression)
67 ms (60 Hz suppression)
80 ms (50 Hz suppression)
400 ms (50+60 Hz suppression)
Input update cycle
time (all active inputs)
[number of active 1] x [input
response time] + 40 ms
I/O refresh time
(influence on PLC
cycle time)
1-3 inputs (48pt mode): 0.008 ms
4 inputs (64pt mode): 0.011 ms
5-6 inputs (96pt mode): 0.016 ms
The CJ1W-TS561 is a 6-channel input unit for K-type and J-type
thermocouples. It can be installed in any CJ1-series PLC system.
It is classified as a basic I/O unit, occupying 48, 64 or 96 I/O points,
depending on the number of activated inputs.
Always verify that the maximum I/O capacity of the CJ1 CPU is
sufficient for the number of required I/O points.
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Nomenclature
Unit status indicators
•
RUN (green)
•
ERC (red)
Sensor error indicators
•
1 - 6
(red)
Removable Terminal Block
•
Connections for Thermocouples 1 - 6
•
CJ1W-TS561: screw terminal
•
CJ1W-TS561 (SL): screwless terminal
DIP switches
(remove terminal block for access)
•
Select input types (K-type/J-type)
•
Select filter functions
•
Select number of active inputs (1-6)
Terminal Block latch
•
Slide down to remove
•
Slide up to lock
* Indication accuracy is guaranteed with the supplied terminal block.
Do not replace the supplied terminal block by a different model (e.g.
screw type by screwless type or vice versa).
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LED indicators
Name State Description
OFF
Fatal error or no power supply.
•
Check the host PLC’s CPU status, and the
status of other I/O units. If all other units
function normally, replace the Unit.
RUN
(Green)
ON
Unit functions normally.
OFF
No fatal errors.
ERC
(Red)
ON
Incorrect DIP switch setting
Fatal error in the Unit.
•
Check the CPU unit for error codes.
•
Re-start the PLC system.
•
If the ERC LED is still lit, replace the unit.
OFF
•
Measurement of the corresponding channel is
within range, or
•
Channel has been deactivated by DIP switch
settings
ON
•
Measured temperature out-of-range, or
•
Thermocouple broken wire
Sensor
Error
1 – 6
(Red)
All ON Calibration data not found or incorrect. The Unit
should be returned to OMRON for calibration.
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Wiring
•
Keep the thermocouple wiring as short as possible to avoid
electrical interference. Shielded wiring is recommended.
•
When extending input wiring, always use compensation wires
appropriate for the thermocouple type.
•
For activated but unused inputs, short-circuit the + and -
terminals, to prevent unstable readout on the other inputs.
•
Keep the input wiring away from power lines including AC power
supply lines and high-power lines. Do not run the I/O lines in the
same duct or conduit as power lines.
•
The input circuits are galvanically isolated from the PLC’s I/O bus,
but there is no galvanic isolation between individual inputs.
•
Always ground the terminal on the Power Supply Unit of the
PLC. In case of shielded sensor wiring, connect the shields to the
same grounding point as the PLC.
