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EJ1

Modular Temperature Controller

EJ1

In-panel Temperature Controller with Flexible Modular Design and Wide Integration with Host Devices

Basic Unit/EJ1N-TC

Ratings

Type EJ1N-TC4 EJ1N-TC2
Power supply voltage 24 VDC
Operating voltage range 85% to 110% of rated voltage
Power consumption 5 W max. (at maximum load) 4 W max. (at maximum load)
Input * Thermocouple: K, J, T, E, L, U, N, R, S, B, W, PLII
ES1B Infrared Thermosensor: 10 to 70°C, 60 to 120°C, 115 to 165°C, 140 to 260°C
Analog input: 4 to 20 mA, 0 to 20 mA, 1 to 5 V, 0 to 5 V, 0 to 10 V
Platinum resistance thermometer: Pt100, JPt100
Input impedance Current input: 150 Ω max., voltage input: 1 MΩ min.
Control
outputs
Voltage
output
Output voltage: 12 VDC ±15%, max. load current: 21 mA (PNP models with short-circuit
protection circuit)
Transistor
output
--- Max. operating voltage: 30 V, max. load current: 100 mA
Current
output
--- Current output range: 4 to 20 mA or 0 to 20 mA DC
Load: 500 Ω max. (including transfer output)
(Resolution: Approx. 2,800 for 4 to 20 mA DC, approx.
3,500 for 0 to 20 mA DC)
Event
inputs
Input points --- 2
Contact input --- ON: 1 kΩ max., OFF: 100 kΩ min.
Non-contact
input
--- ON: Residual voltage: 1.5 V max.,
OFF: Leakage current: 0.1 mA max.
Event inputs --- Outflow current: Approx. 4 mA per point
Number of input and
control points
Input points: 4, Control points: 4 Input points: 2, Control points: 2
Setting method Via communications
Control method ON/OFF control or 2-PID (with autotuning, self-tuning) [V1.2]
Other functions Two-point input shift, digital input filter, remote SP, SP ramp, manual manipulated variable,
manipulated variable limiter, interference overshoot adjustment, loop burnout alarm, RUN/
STOP, banks, I/O allocations, etc.
Ambient
temperature range
Operating: -10°C to 55°C, Storage: -25°C to 65°C (with no icing or condensation)
Ambient humidity range Operating: 25% to 85% (with no condensation)

* Inputs are fully universal. Therefore, platinum resistance thermometer, thermocouple, infrared thermosensor, and
    analog input can be selected.

Characteristics

Indication accuracy Thermocouple input/platinum resistance thermometer input:
(±0.5% of indication value (PV) or ±1°C, whichever is greater) ±1 digit max. *1
Analog input: ±0.5% FS ±1 digit max.
CT input: ±5% FS ±1 digit max.
Hysteresis 0.1 to 999.9 EU (in units of 0.1 EU) *2
Proportional band (P) 0.1 to 999.9 EU (in units of 0.1 EU) *2
Integral time (I) 0 to 3,999 s (in units of 1 s)
Derivative time (D) 0.0 to 999.9 s (in units of 0.1 s)
Control period 0.5 s, 1 to 99 s (in units of 1 s)
Manual reset value 0.0% to 100.0% (in units of 0.1%)
Alarm setting range -1,999 to 9,999 (decimal point position depends on input type)
Sampling period 250 ms
Influence of signal
source resistance
Thermocouple: 0.1°C (0.2°F)/Ω max. (100 Ω max per line) *3
Platinum resistance thermometer: 0.4°C (0.8°F)/Ω max. (10 Ω max per line)
Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 600 VAC, 50/60 Hz for 1 min between current-carrying terminals of different polarity
Vibration resistance 10 to 55 Hz, 20 m/s2 for 2 hours each in X, Y, and Z directions
Shock resistance 150 m/s2, 3 times each in 6 directions
Weight 180 g
Degree of protection Rear case: IP20, Terminal section: IP00
Memory protection EEPROM (non-volatile memory) (number of writes: 100,000)
Standards Approved
standards
UL61010C-1, CSA C22.2 No.1010-1
EMC Directive EMI: EN61326
EMI Radiated: EN55011 Group1 class A
EMI Conducted: EN55011 Group1 class A
EMS: EN61326
ESD Immunity: EN61000-4-2
Electromagnetic Field Immunity: EN61000-4-3
Burst immunity/Noise Immunity: EN61000-4-4
Conducted Disturbance Immunity: EN61000-4-6
Surge Immunity: EN61000-4-5

*1. The indication of K thermocouples in the −200 to 1,300°C range, T and N thermocouples at a temperature of −100°C
       or less, and U and L thermocouples at any temperature is ±2°C ±1 digit maximum. The indication of B thermocouples
       at a temperature of 400°C or less is unrestricted. The indication of R and S thermocouples at a temperature of 200°C
       or less is ±3°C ±1 digit max.
       W = (±0.5% of indication value (PV) or ±3°C, whichever is greater) ±1 digit max. PLII = (±0.5% of indication value
       (PV) or ±2°C, whichever is greater) ±1 digit max.
       The indication accuracy for K thermocouples in the −199.9 to 999.9°C range [V1.2] is (±0.5% of indication value (PV)
       or ±1°C, whichever is greater) ±10 digit maximum. However, at a temperature of -100°C or less, it is ±2°C ±10 digit
       maximum.
*2. "EU" stands for Engineering Unit. The location of the decimal point depends on the type of sensor that is selected.
       If the decimal point locations is set to 0 (****), however, it will be treated as if it were set to 1 (***.*).
*3. B, R, S, and W sensors: 0.2°C/Ω max. (100 Ω max.)

Communications Specifications

Item Port B *1 Port A Terminal/
Port A Connector *1
G3ZA Connection
Port *2
Transmission path
connection
RS-485 (multipoint)
Communications
method
RS-485 (two-wire, half duplex)
Synchronization
method
Start-stop synchronization
Communications
protocol
CompoWay/F, Modbus *4 [V1.1] CompoWay/F
Baud rate 9.6, 19.2, 38.4, 57.6, or 115.2 kbps 38.4 kbps fixed 57.6 kbps fixed
Transmission code CompoWay/F: ASCII, Modbus: RTU CompoWay/F: ASCII
Data bit length 7 or 8 bits 7 bits
Stop bit length 1 or 2 bits 2 bits
Error detection Vertical parity (none, even, or odd) Vertical parity (even)
Block check character (BCC): with CompoWay/F, CRC-16: (with Modbus)
Flow control None
Interface RS-485
Retry function None
Communications
response wait time
0 to 99 ms (default: 5 ms) [V1.1] 1 to 99 ms (default: 1 ms) ---
Number of Units
that can be
connected in
parallel *3
64 Units (model numbers with
TC4: 256 channels, model
numbers with TC2: 128 channels)
Communications connection
via port B on the End Unit
64 Units (model numbers with
TC4: 256 channels, model
numbers with TC2: 128 channels)
Communications connection
via port A on the End Unit
8 Units (Communications
connection via G3ZA
port on the Basic Unit)

*1. Connection from the EJ1C-EDU. When using an HFU, port B on the End Unit can be used for distributed placement
       only.
*2. A special cable (EJ1C-CBLA050) must be purchased separately for the G3ZA connection.
*3. For the number of Units that can be connected, refer to "Connection Precautions" on Catalog.
*4. The Modbus protocol can be used with Basic Unit with version 1.1 or higher.

Current Transformer (CT) Rating

Dielectric strength 1,000 VAC for 1 min
Vibration resistance 50 Hz, 98 m/s2
Weight E54-CT1: Approx. 11.5 g, E54-CT3: Approx. 50 g
Accessories (E54-CT3 only) Armatures (2), plugs (2)

Characteristics of the Heater Burnout Alarm, SSR Failure Alarm, and Heater Overcurrent Alarm (TC2[]-QNHB Model Only)

Maximum heater current 100 VAC
Input current indication accuracy (±5.0A) ±1 digit max.
Heater burnout alarm setting range 0.1 to 99.9 A (in units of 0.1 A)
0.0 A: Heater burnout alarm output turns OFF.
100.0 A: Heater burnout alarm output turns ON.
Min. detection ON time: 100 ms *1
SSR failure alarm setting range 0.1 to 99.9 A (in units of 0.1 A)
0.0 A: SSR failure alarm output turns ON.
100.0 A: SSR alarm output turns OFF.
Min. detection OFF time: 100 ms *2
Heater overcurrent alarm setting range 0.1 to 99.9 A (in units of 0.1 A)
0.0 A: Heater overcurrent alarm output turns ON.
100.0 A: Heater overcurrent alarm output turns OFF.
Min. detection ON time: 100 ms *1

*1. When the control output ON time is less than 100 ms, heater burnout detection, heater overcurrent detection, and
       heater current measurement are not performed.
*2. When the control output OFF time is less than 100 ms, SSR failure alarm and leakage current measurement are not
       performed.

Input Ranges

Sensor inputs are fully universal. Therefore, platinum resistance thermometer, thermocouple, infrared thermosensor, and analog input can be selected.
Inputs can be set for each channel using universal inputs.

EJ1 Specifications 11
EJ1 Specifications 12

Shaded ranges indicate default settings.
Applicable standards by input type are as follows:
K, J, T, E, N, R, S, B: JIS C1602-1995, IEC584-1
L: Fe-CuNi, DIN 43710-1985
U: Cu-CuNi, DIN 43710-1985
W: W5Re/W26Re, ASTM E988-1990
PL II: According to Platinel II Electromotive Force Table by Engelhard Corp.
JPt100: JIS C 1604-1989, JIS C 1606-1989
Pt100: JIS C 1604-1997 IEC 751

HFU Unit/EJ1N-HFU[]-NFL[]

Ratings

Power supply voltage 24 VDC
Operating voltage range 85% to 110% of rated voltage
Power consumption 2 W max. (at maximum load)
Auxiliary
outputs *
Outputs 4
Transistor outputs Max. operating voltage: 30 VDC, Max. load current: 50 mA
Event inputs Inputs 4
Contact inputs ON: 1 kΩ max., OFF: 100 kΩ min.
Transistor inputs ON: residual voltage of 1.5 max., OFF: leakage current of 0.1 mA max.
Event inputs Outflow current: Approx. 4 mA (per contact)
Programless
connection
Downloading
(EJ1 reads data from a PLC)
Number of parameters that can be set: 1200 [V1.2]
Uploading
(EJ1 writes data to a PLC)
Number of parameters that can be set: 1200 [V1.2]
Applicable PLCs OMRON: CS/CJ/NJ Series
Mitsubishi Electric: MELSEC-An/AnS/FX3UC Series [V1.1]
Mitsubishi Electric: MELSEC-Q/QnA/QnAS Series
Ambient temperature range Operating: -10°C to 55°C
Storage: -25°C to 65°C (with no icing or condensation)
Ambient humidity range Operating: 25% to 85% (with no condensation)

* Auxiliary outputs can be allocated using digital output allocations.

Characteristics

Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 600 VAC, 50/60 Hz for 1 min between current-carrying terminals of different polarity
Vibration resistance 10 to 55 Hz, 20 m/s2 for 2 hours each in X, Y, and Z directions
Shock resistance 150 m/s2, 3 times each in 6 directions
Weight 160 g
Degree of protection Rear case: IP20, Terminal section: IP00
Memory protection EEPROM (non-volatile memory) (number of writes: 100,000)
Standards Approved standards UL61010C-1, CSA C22.2 No.1010-1
EMC Directive Refer to Catalog.

Communications Characteristics: Port C

Transmission path
connection
RS-485/RS-422: Multi-point, RS-232C: Point-to-point *1
Communications method RS-485/RS-422 (two-wire, half duplex), RS-232C
Synchronization method Start-stop synchronization
Communications protocol OMRON PLC protocol (Connectable PLCs: SYSMAC CS/CJ/CP Series)
AnA/AnU CPU common commands (Connectable PLCs: MELSEC-An/AnS/FX3UC
Series) [V1.1]
MC protocol (form 5) (Connectable PLCs: MELSEC-Q/QnA/QnAS Series)
Baud rate 9.6, 19.2, 38.4, 57.6, or 115.2 kbps
Transmission code Binary
Data bit length 8 bits
Stop bit length 1 bit
Error detection Depends on protocol selected for the programless communications protocol.
Flow control None
Interface RS-485, RS-422, RS-232C *1
Retry function Available
Communications response
wait time
0 to 99 ms (default: 5 ms) [V1.1]
Number of Basic Units that
can be connected in
parallel *2
32 Units (model numbers with TC4:128 channels max., model numbers with TC2:64
channels max.)
Number of HFUs that can
be connected [V1.1]
CS/CJ/NJ-series PLCs: 8 (EJ1-HFU[]-NFLK)
MELEC Q/QnA/QnAS-series PLCs: 8 (EJ1-HFU[]-NFL2)

*1. The communications method can be switched between RS-485 and RS-232C. A separate model must be used for
       RS-422 communications.
*2. For the number of Units that can be connected, refer to “Connection Precautions” on Catalog.

HFU Unit/EJ1N-HFUB-DRT

Ratings

Power supply
voltage
DeviceNet power supply 24 VDC (for internal circuits)
EDU power supply 24 VDC (for RS-485 communications circuits and Temperature
Controllers)
Operating voltage
range
DeviceNet power supply 11 to 25 VDC
EDU power supply 20.4 to 26.4 VDC
Power consumption (at maximum load) 1 W max. (at maximum load)
Main functions Remote I/O communications, explicit message communications,
CompoWay/F command feed-through function, parameter backup
function, and configuration registration
Ambient temperature range Operating: -10°C to 55°C
Storage: -25°C to 65°C (with no icing or condensation)
Ambient humidity range Operating: 25% to 85% (with no condensation)

Characteristics

Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 600 VAC, 50/60 Hz for 1 min
Vibration resistance 10 to 55 Hz, 10 m/s2 for 2 hours each in X, Y, and Z directions
Shock resistance 150m/s2 max. 3 times each in 3 axes, 6 directions
Weight 70 g max.
Degree of protection IP20
Memory protection EEPROM, 100,000 write operations (backup data)
Standards Approved standards UL61010-1, CSA C22.2 No.1010-1
EMC Directive Refer to Catalog.

Communications Characteristics

Communications protocol Conforms to DeviceNet.
Commu-
nications
functions
Remote I/O
communications
Master-slave connections (polling, COS, or cyclic)
Conforms to DeviceNet specifications.
I/O allocation Input and output data can be allocated freely by user with the Configurator.
Allocations can be made to DeviceNet parameters or Temperature Controller
parameters.
Two blocks for IN Area, up to 100 words
One block for OUT Area, up to 100 words (The first word is always allocated to the OUT
Enable Bit.)
Message
communications
Explicit message communications
CompoWay/F communications commands can be sent (commands are sent in explicit
message format).
Connection format Combination of multidrop and T-branch connections (for trunk and drop lines)
Baud rate DeviceNet: 500, 250, or 125 kbps, or automatic detection of master baud rate
Communications media Special 5-wire cable (2 signal lines, 2 power lines, and 1 shield line)
Communications distance Baud rate Network length Drop line length Total drop line
length
500 kbps 100 m max. (100 m max.) 6 m max. 39 m max.
250 kbps 250 m max. (100 m max.) 6 m max. 78 m max.
125 kbps 500 m max. (100 m max.) 6 m max. 156 m max.
The values in parentheses apply when Thin Cables are used.
Communications power
supply
11 to 25 VDC
Maximum number of nodes
that can be connected
64 (includes Configurator when used.)
Maximum number of slaves
that can be connected
63
Error control CRC error detection
DeviceNet power supply Power supplied from DeviceNet communications connector
Applicable Temperature
Controllers
EJ1 Series (excluding the EJ1G)
TC4: EJ1N-TC4A-QQ and EJ1N-TC4B-QQ
TC2: EJ1N-TC2A-QNHB, EJ1N-TC2B-QNHB, EJ1N-TC2A-CNB, and EJ1N-TC2B-CNB
Maximum number of
Temperature Controllers
that can be connected *
16 Units (model numbers with TC4: 64 channels max., model numbers with TC2: 32
channels max.)

* For the number of Units that can be connected, refer to "Connection Precautions" on Catalog.

End Unit/EJ1C-EDU

Ratings

Power supply voltage 24 VDC
Operating voltage range 85% to 110% of rated voltage
Auxiliary output * Outputs 2
Transistor outputs Max. operating voltage: 30 VDC, Max. load current: 50 mA
Ambient temperature range Operating: -10°C to 55°C
Storage: -25°C to 65°C (with no icing or condensation)
Ambient humidity range Operating: 25% to 85% (with no condensation)

* Auxiliary output can be allocated using the bus output allocation for each Basic Unit.

Characteristics

Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 600 VAC, 50/60 Hz for 1 min between current-carrying terminals of different polarity
Vibration resistance 10 to 55 Hz, 20 m/s2 for 2 hours each in X, Y, and Z directions
Shock resistance 150 m/s2, 3 times each in 6 directions
Weight 70 g
Degree of protection End Unit case: IP20, Terminal section: IP00
Standards Approved standards UL61010C-1, CSA C22.2 No.1010-1
EMC Directive Same as for the Basic Unit. Refer to Catalog.

Communications

Port B *1 Basic Unit Communications (Refer to "Communications Specifications" on Catalog.)
Port A Basic Unit Communications (Refer to "Communications Specifications" on Catalog.)
Port A connector *2 E58-CIFQ1

*1. Port B communications for the End Unit cannot be used when port C communications for the HFU is used.
*2. Port A connector communications and port A terminal communications cannot be used at the same time.