Omron E5CN-FR User manual

Limit Controller E5CN-FR 1
Limit Controller
E5CN-FR
This Best-selling General-purpose 48×48-mm
Temperature Controller Is Now Even Better
with the Addition of Limit Controller Models
Delivering Complete Functionality for Limit
Outputs and Easy Settings with 11-segment
Display.
• Connect to either of three options with the same model:
Infrared temperature sensor, thermocouple, or platinum resis-
tance thermometer.
• Reset limit outputs using event inputs (models that support event
inputs).
• Communications functions are now provided for Modbus (RTU)
or CompoWay/F communications protocols (models with
communications functions).
• Water-resistant construction (NEMA4X for indoor use, equiva-
lent to IP66).
• Conforms to FM (Factory Mutual) standards (FM3545/3810).
• Conforms to international standards including UL, CSA, and IEC
safety standards and EMC.
• Easily see the status from a distance with PV display with
two-color switching function.
• On-board power supply option is available for ES1B Infrared
Thermosensor.
Note: Refer to Precautions on page 14.
Features
Complete Limit Controller Functionality
Trace Error Status
Check the maximum temperature during an error and the time
lapsed since the error occurred using the "limit over continuation
time" and "limit over max./min. value" measuring functions.
New Annunciator Output Warning Function
Hazard lights and buzzers on the devices alert the user of errors
when limit over errors occur.
Reset Limit Outputs Using Event Inputs (Models
with Event Inputs)
Limit outputs can be reset using event inputs, enabling multiple limit
outputs to be reset altogether from a distance.
Input Error Output Function
Alarm signals are output if a sensor disconnection or other input
error occurs, enabling application in equipment and facilities
requiring safety design.
Basic Performance and Functionality as Easy as Temperature Controllers
Make Settings Easily with 11-segment Displays
The E5CN-FR uses an 11-segment display, the same as the E5CN.
The alphabet is clearly displayed, eliminating the need to make
parameter settings while having to decipher symbols, which was an
inconvenience of previous general-purpose temperature controllers.
Multiple Inputs with a Single Controller
A single Controller supports both thermocouple and platinum-
resistance thermometer inputs, eliminating the need to select models
depending on the input. This contributes toward reducing the number
of service parts required as well as decreasing inventory levels.
Easily Check Error Status Using the
Two-color Switching Display
The PV display switches colors to enable status to be easily checked
from a distance.

2Limit Controller E5CN-FR
Model Number Structure
■Model Number Legend
1. Output type
FR: FM Limit output
2. Number of alarms
Blank: No alarm
2: Two alarms
3. Option Unit
M: Option Unit can be mounted
4. Input type
T: Thermocouple/platinum resistance thermometer (multi-input)
1. Functions
03: Communications
B: Two Event inputs
PB: Power supply and two event inputs
Note: Other Option Boards are not supported.
Ordering Information
■Limit Controllers with Temperature Sensor Inputs
■Option Units
The E5CN-FR provides optional functionality when one of the following Option Units is mounted.
Note: These Option Units can be used for the new E5CN models/E5CN-FR models only.
.
1 2 3 4
E5CN-FR@MT-500
1
E53-CN-@N
Size Power supply voltage Number of alarm points Control outputs Model
1/16 DIN
48 × 48 × 78 (W × H × D)
100 to 240 VAC 0 Limit output E5CN-FRMT-500
2 Limit output E5CN-FR2MT-500
Functions Model
Communications E53-CN03N
Two event inputs E53-CNBN
Two event inputs External power supply for ES1B E53-CNPBN
This data sheet is provided as a guideline for selecting products. Be sure to refer to the following user manuals for application precautions
and other information required for operation before attempting to use the product.
E5CN-FR Temperature Controller User's Manual (Cat. No. H133)
E53-CN03N
Communications
Do not
use.
Do not
use.
Do not
use.
Do not
use.
Do not
use.
B
A
RS-485
12
11
15
14
13
E53-CNBN
Event inputs
EV1
EV2
12
11
15
14
13
Attach the appropriate terminal labels.
11
12
13
14
15
EV1
EV2
E53-CNPBN
Event inputs/
External power
supply for ES1B
12 VDC±10%
20 mA
+
−
External power

Limit Controller E5CN-FR 3
Specifications
■Ratings
■Input Ranges
Thermocouples/Platinum Resistance Thermometers
Item Power supply
voltage
100 to 240 VAC, 50/60 Hz
Operating voltage range 85% to 110% of rated supply voltage
Power consumption 7.5 VA max.
Sensor input Models with temperature inputs
Thermocouple: K, J, T, E, L, U, N, R, S, or B
Platinum resistance thermometer: Pt100 or JPt100
Infrared temperature sensor: 10 to 70°C, 60 to 120°C, 115 to 165°C, or 160 to 260°C
Control output FM Limit output
relay
SPST-NO, 250 VAC, 3 A (resistive load), electrical life: 100,000 operations,
minimum applicable load: 5 V, 10 mA
Alarm output SPST-NO, 250 VAC, 1 A (resistive load), electrical life: 100,000 operations,
minimum applicable load: 1 V, 1 mA
Event input Contact input ON: 1 kΩmax., OFF: 100 kΩmin.
Non-contact input ON: Residual voltage: 1.5 V max., OFF: Leakage current: 0.1 mA max.
Outflow current: Approx. 7 mA per point
External power supply for ES1B 12 VDC ±10%, 20 mA, Short-circuit protection provided.
Setting method Digital setting using front panel keys
Indication method 11-segment digital display and individual indicators
Character height: PV: 11 mm, SV: 6.5 mm
Other functions • Limit over continuation time measurement function
•Limit over max./min. value measurement function
•Annunciator output
•Input error output
•PV display two-color switching function
•Input digital filter
•Input compensation
•Protection functions
Ambient operating temperature −10 to 55°C (with no icing or condensation), for 3-year warranty: −10 to 50°C
Ambient operating humidity 25% to 85%
Storage temperature −25 to 65°C (with no icing or condensation)
3200
3000
2300
1500
1400
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
012345 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Input Type
Name
Platinum resistance
thermometer Thermocouple Infrared temperature
sensor
Pt100 JPt100 KJ TELUNRSB
10 to
70ºC
60 to
120ºC
115 to
165ºC
160 to
260ºC
1300
−100.0
−300.0
−200.0
Temperature range (ºF)
1500
900.0 900.0
210.0 210.0
−300
−199.9
0.0 0.0 0.0
−300
−199.9
2300
900.0
0.0
−100
1500 1500
750.0
700 700 700 700
−300
−199.9 −199.9
−300
0
−100
−300
00 0
2300
3000 3000
3200
300
00 0
190
240 320
500
1100
Setting number
The applicable standards for the input types
are as follows:
K, J, T, E, N, R, S, B: IEC584-1
L: Fe-CuNi, DIN 43710-1985
U: Cu-CuNi, DIN 43710-1985
Pt100: IEC 751
Shaded settings are the default settings.

4Limit Controller E5CN-FR
■Alarm Types
Select alarm types out of the 12 alarm types listed in the following table.
Note: 1. With set values 1, 4 and 5, the upper and lower limit values
can be set independently for each alarm type, and are
expressed as “L” and “H.”
2. Set value: 1, Upper- and lower-limit alarm
3. Set value: 4, Upper- and lower-limit range
4. Set value: 5, Upper- and lower-limit with standby sequence
For Upper- and Lower-Limit Alarm Described Above
•Case 1 and 2
Always OFF when the upper-limit and lower-limit
hysteresis overlaps.
•Case 3: Always OFF
5. Set value: 5, Upper- and lower-limit with standby sequence
Always OFF when the upper-limit and lower-limit hysteresis
overlaps.
6. The annunciator output turns ON to inform users when a
limit over occurs. This function is enabled by selecting 12
(annunciator output) for alarm 1 type. The annunciator
output turns ON when a limit over occurs, and turns OFF for
the RESET operation.
Set the alarm types for alarms 1 and 2 independently in the initial
setting level. The default setting is 12 (annunciator) for alarm 1 type
and 2 (upper limit) for alarm 2 type.
Set value Alarm type Alarm output operation
When X is
positive
When X is
negative
0 Alarm function
OFF
Output OFF
1
(See note 1.)
Upper- and
lower-limit
(deviation)
(See note 2.)
2 Upper limit
(deviation)
3Lowerlimit
(deviation)
4
(See note 1.)
Upper- and
lower-limit
range
(deviation)
(See note 3.)
5
(See note 1.)
Upper- and
lower-limit with
standby
sequence
(deviation) (See note 5.)
(See note 4.)
6 Upper-limit
with standby
sequence
(deviation)
7 Lower-limit
with standby
sequence
(deviation)
8 Absolute-value
upper-limit
9 Absolute-value
lower-limit
10 Absolute-value
upper-limit with
standby
sequence
11 Absolute-value
lower-limit with
standby
sequence
12
(See note 6.)
Annunciator
output
---
ON
OFF SP
LH
SP
X
ON
OFF SP
X
ON
OFF
SP
X
ON
OFF SP
X
ON
OFF
SP
LH
ON
OFF
SP
LH
ON
OFF
SP
X
ON
OFF SP
X
ON
OFF
SP
X
ON
OFF SP
X
ON
OFF
0
X
ON
OFF 0
X
ON
OFF
0
X
ON
OFF 0
X
ON
OFF
0
X
ON
OFF 0
X
ON
OFF
0
X
ON
OFF 0
X
ON
OFF
LH
H<0, L>0
|H| < |L|
SP
Case 1
LH
H>0, L<0
|H| > |L|
SP
Case 2
LH
H<0, L<0
SP
LH
H<0, L>0
|H| ≥ |L|
SP
LH
H>0, L<0
|
H
|
≤
|
L
|
SP
Case 3 (Always ON)
LH
H<0, L>0
|H| < |L|
SP
Case 1
LH
H>0, L<0
|H| > |L|
SP
Case 2
LH
H<0, L<0
SP
L
L
H
H<0, L>0
|H| ≥ |L|
SP
H
H>0, L<0
|H| ≤ |L|
SP
Case 3 (Always ON)
Limiter
Annunciator
output
Status of FM
output
High limit
ON
OFF
ON
OFF
Hysteresis
(1) RESET (2) RESET (3) RESET

Limit Controller E5CN-FR 5
■Characteristics
Note: 1. The indication of K thermocouples in the −200 to 1300°C
range, T and N thermocouples at a temperature of −100°C
max., and U and L thermocouples at any temperature is
±2°C ±1 digit maximum. The indication accuracy of the B
thermocouple at a temperature of 400°C max. is not
specified. The indication accuracy of the R and S
thermocouples at a temperature of 200°C max. is ±3°C ±1
digit max.
2. B, R, and S sensors: 0.2°C/Ωmax. (100 Ωmax.)
■Communications Specifications
Note: The baud rate, data bit length, stop bit length, and vertical
parity can be individually set using the Communications Setting
Level.
Indication accuracy Thermocouple: (See note 1.)
(±0.5% of indicated value or ±1°C,
whichever is greater) ±1 digit max.
Platinum resistance thermometer:
(±0.5% of indicated value or ±1°C,
whichever is greater) ±1 digit max.
Hysteresis 0.1°C (°F) to 999.9°C (°F) in units of 0.1°C (°F)
Alarm setting range −1999 to 9999 (decimal point position depends
on input type)
Sampling period 250 ms
Affect of signal source
resistance
Thermocouple: 0.1°C/Ωmax. (100 Ωmax.)
(See note 4.)
Platinum resistance thermometer: 0.4 ° C/ Ω max.
(10
Ω max.)
Insulation resistance 20 MΩmin. (at 500 VDC)
Dielectric strength 2,000 VAC, 50 or 60 Hz for 1 min (between
terminals with different charge)
Vibration
resistance
Malfunction 10 to 55 Hz, 20 m/s2for 10 min each in X, Y, and
Z directions
Destruction 10 to 55 Hz, 0.75-mm single amplitude for 2 hrs
each in X, Y, and Z directions
Shock
resistance
Malfunction 100 m/s2min., 3 times each in X, Y, and Z
directions
Destruction 300 m/s2min., 3 times each in X, Y, and Z
directions
Weight Controller: Approx. 150 g,
Mounting Bracket: Approx. 10 g
Degree of protection Front panel: NEMA4X for indoor use
(equivalent to IP66)
Rear case: IP20, Terminal section: IP00
Memory protection Non-volatile memory (number of writes:
1,000,000 operations)
EMC Emission Enclosure: EN55011 Group1 ClassA
Emission AC Mains: EN55011 Group1 ClassA
Immunity ESD: EN61000-4-2 4 kV contact
discharge (level 2)
8 kV air discharge (level 3)
Immunity RF-interference:
EN61000-4-3 10 V/m
(80-1000 MHz, 1.4-2.0 GHz
amplitude modulated) (level 3)
10 V/m (900 MHz pulse
modulated)
Immunity Conducted Disturbance:
EN61000-4-6 3 V
(0.15 to 80 MHz) (level 2)
Immunity Burst:
EN61000-4-4 2 kV Power-line
(level 3)
1 kV I/O signal-line (level 3)
Immunity Surge: EN61000-4-5 1kV line to line
Power line, output line (relay
output)
2 kV line to ground Power line,
output line (relay output)
1 kV line to ground Input line
(communication)
Immunity Voltage Dip/Interrupting:
EN61000-4-11 0.5 cycle, 100%
(rated voltage)
Approved standards FM-3545/3810
UL 61010C-1
CSA C22.2 No.1010.1
Conformed standards EN61326, EN61010-1, IEC61010-1
VDE0106 Part 100 (Finger protection), when
the terminal cover is mounted.
Transmission line
connection method
RS-485 multipoint
Communications RS-485 (two-wire, half duplex)
Synchronization
method
Start-stop synchronization
Baud rate 1200, 2400, 4800, 9600, 19200, or 38400 bps
Transmission code ASCII
Data bit length 7 or 8 bits
Stop bit length 1 or 2 bits
Error detection Vertical parity (none, even, odd)
Block check character (BCC) with CompoWay/F or
CRC-16 Modbus
Flow control None
Interface RS-485
Retry function None
Communications
buffer
40 bytes
Communications
response wait time
0 to 99 ms
Default: 20 ms

6Limit Controller E5CN-FR
External Connections
•Standard insulation is applied between any of the following: power supply terminals, input terminals, output terminals, and communications
terminals (for models with communications). If reinforced insulation is required, provide additional insulation, such as spacial distance or
material insulation, as defined by IEC 60664 suitable for the maximum operating voltage.
•Consult with your OMRON representative before using the external power supply for the ES1B for any other purpose.
Nomenclature
E5CN-FR
Limit Output
(Relay)
−
+
Alarm Outputs
Alarm 1/
Input error output (See note.)
Alarm 2
Infrared
temperature
sensor
Communications
Platinum
resistance
thermometer
Event input 1
Event input 2
Event inputs
6
7
8
9
10
11
12
13
14
15
1
3
2
4
5
11
12
13
14
15
B
Pt TC
A
B
B
A
6
7
8
1
2
RS-485
11
12
13
14
15
Input power supply 100 to 240 VAC
11
12
13
14
15
Event input 1
Event input 2
Event inputs/
External power
su
pp
l
y
for ES1B
12 VDC±10%
20 mA
+
−
External power
Note: Output when an input error output is enabled in
the Advance Function Setting Level. If an input
error output is enabled, the alm1 operation
indication on the front panel will not light and
s.err will be displayed on the No. 1 display.
Do not use.
Do not use.
Do not use.
Do not use.
Do not use.
E5CN-FR
LIMIT E5CN
Operation indicators
Level Key and Reset key
Temperature unit
No.1 display
No. 2 display
Up Key
Mode Key Down Key
RESET

Limit Controller E5CN-FR 7
Dimensions
■Accessories
Terminal Cover
(E53-COV10)
6
58 44.8 ×44.8 48.8
91
78
Mounting Adapter
(Accessory)
@48
60 min.
(48 ×number of units −2.5)+1.0
0
45 +0.
6
0
45 +0.6
0
45 +0.6
0
Group mounting does not
allow waterproofing.
Panel Cutout
Mounted Separately Group Mounted
E5CN -FR
Terminal Models
•Recommended panel thickness is 1 to
5 mm.
•Group mounting is not possible in the
vertical direction. (Maintain the
specified mounting space between
Controllers.)
•To mount the Controller so that it is
waterproof, insert the waterproof
packing onto the Controller.
•When two or more Controllers are
mounted, make sure that the
surrounding temperature does not
exceed the allowable operating
temperature specified in the
specifications.
Note: The terminal block cannot be removed.
The suffix “-500” is added to the model number
of each Controller provided with a E53-COV10
Terminal Cover.
48
48.8
22
9.1
Terminal Cover
E53-COV10
Note: The suffix “-500” is added to the model number of each
Controller provided with a E53-COV10 Terminal Cover.

8Limit Controller E5CN-FR
Operating Method
■Outline of Operation Procedures
The following diagram illustrates the entire setting level. A password is required to enter the advance function setting level and the calibration level.
Some parameters may not be displayed depending on the protection settings and operation conditions.
The control operation will stop when switching from operation level to initial setting level.
Note: 1. Operation level entered for software reset.
2. You cannot move to other levels by operating the keys on the front panel from the calibration level. You must turn OFF the power supply.
3. The time taken to move to the protect level can be adjusted by changing the “Move to protect level time” setting.
Troubleshooting
When an error has occurred, the No. 1 display shows the error code. Take necessary measure according to the error code, referring the table
bellow.
Note: 1. Refer to “E5CN-FR Limit Controller User’s Manual” for details of the control range.
2. These errors are displayed only when the PV/Limit SP is displayed.
3. If the display is restored to normal after cycling the power supply, the error may have been caused by noise. Check for noise being generated nearby.
No. 1 display Meaning Action Status at error
Limit outputs Alarm
s.err Input error (See note 2.)
(broken line, A/D converter
error)
Check the wiring of inputs, disconnections, shorts and input type.
(See note 3.)
OFF Operates as
above the upper
limit.
-lo- Over lower-limit indication
range (See note 2.)
Input value is smaller than control range.
Check the control range.
Upper limiter Normal operation Operates as
above the lower
limit.
Lower limiter OFF
-hi- Over upper-limit indication
range (See note 2.)
Input value is larger than control range.
Check the control range.
Upper limiter OFF Operates as
above the upper
limit.
Lower limiter Normal operation
e111 Memory error Turn the power OFF then back ON again. If the display remains the
same, the controller must be repaired. (See note 3.)
OFF OFF
[[[[ Over display range (lower-
limit display range)
(See note 2.)
This is not an error. This is displayed when the input value exceeds
the display limit but is within the control range.
Normal operation Normal operation
Input password.
Input password.
Set value 1201
Control in progress
Control stopped
Not displayed for some models
Level change
Power ON
Press the
Level Key
less than 1 s.
Press the Level
Key for at least 1 s.
Press the
Level + Mode
Keys.
for at least 1 s
Press the
Level + Mode Keys;
display will flash.
(See
note 1.)
(See
note 2.)
Set value −169
Press the
Level Key for
at least 1 s.
Press the Level Key
for at least 1 s;
display will flash.
Press the Level
Key for at least
3 s.
Press the Level +
Mode Keys for at least
3 s. (See note 3.)
Press the Level Key
for less than 1 s.
l.adj
F
25
100
F
Operation Level Adjustment Level
Control stops.
Protect Level
Initial Setting Level
Communications
Setting Level
Advanced Function
Setting Level
Calibration Level

Limit Controller E5CN-FR 9

10 Limit Controller E5CN-FR
■Parameters
Move to protect
level
pmov
0
M
Operation/adjustment
protection
oapt
0
Initial Setting/Communications
protection
icpt
1
M
Setting change protection
wtpt
off
Password to
move to protect
level
prlp
0
Protect Level
M
M
Password setting
(always displayed)
Adjustment Level
Adjustment
level display
ladj
M
Displayed one time when
moving to adjustment level.
M
Communications writing
cmwt
off
Temperature
input shift
ins
F
0.0
M
Upper-limit
temperature input
insh
F
0.0
M
Set either of these
parameters.
Lower-limit
temperature input
insl
F
0.0
M
Hysteresis
hys
F
1.0
Operation Level
PV/Limit setting
value
25
F
100
M
Limit setting
value
sp
F
100
M
Alarm value 1
al-1
F
0
M
Upper-limit
alarm value 1
al1h
F
0
M
Set either of these
parameters.
Lower-limit
alarm value 1
al1l
F
0
M
Alarm value 2
al-2
F
0
M
Upper-limit
alarm value 2
al2h
F
0
M
Set either of these
parameters.
Lower-limit
alarm value 2
al2l
F
0
M
Press the Level Key for
less than 1 s.
Press the Level Key for
less than 1 s.
Power ON
sp-s
100
M
Limit over continuation
time
time
----
M
Limit over max.
value
p-hi
F
----
M
Limit over min.
value
p-lo
F
----
Monitor only
Press the Level Key for
at least 3 s.
Press the Level Key for
at least 1 s.
MM
M
Limit set value
Press the Level
+ Mode Keys
for at least 1 s.
Press the Level + Mode
Keys for at least 3 s.>*
*The time taken to move to protect
level can be adjusted bychanging the
"Move to protect level time" setting.
Input password
(Displayed when
password is set.)
Set either of these
parameters.
Set either of these
parameters.
Change using the SP
display change setting.
∗ ∗
∗
F
1-point shift
2-point shift
Some parameters are not displayed
depending on the model of the Controller
and parameter settings. For details, refer
to the E5CN-FR Limit Controller User's
Manual (Cat. No. H133).

Limit Controller E5CN-FR 11
Protocol selection
Switches between
Compoway/F and
Modbus.
psel
cwf
M
Communications unit No.
u-no
1
Communications baud rate
bps
9.6
M
Communications
data length
len
7
Communications
stop bits
sbit
2
M
CompoWay/F
only
Communications parity
prty
even
Communications Level
(only models with communications.)
M
M
Changes are effective after cycling power
or after a software reset.
M
Send delay
sdwt
20
Input type
in-t
5
M
Temperature unit
d-u
c
M
Move by setting password (-169).
Initial Setting Level
Selecting upper
and lower limit
l-hl
hi
M
Alarm 1 type
alt1
2
M
Alarm 2 type
alt2
2
M
Move to advanced
function level
amov
0
Advanced Function Setting Level
Parameter initialization
init
off
M
Event input assignment 1
ev-1
none
Standby sequence reset
method
rest
a
M
Alarm 1 open in alarm
al1n
n-o
Alarm 1 hysteresis
alh1
0.2
M
Alarm 2 open in alarm
al2n
n-o
M
M
M
Alarm 2 hysteresis
alh2
0.2
M
Input digital filter
inf
0.0
Additional PV display
pvad
on
Automatic return of
display mode
ret
off
M
M
Alarm 1 latch
a1lt
off
M
Alarm 2 latch
a2lt
off
Input error output
sero
off
M
PV display change
colr
red
M
M
Time selection
tmsl
l.out
M
Restart mode
rmd
con@
M
Move to calibration level
cmov
0
Press the Level Key for
less than 1 s.
Press the Level Key
for less than 1 s.
Press the Level Key for at least 1 s.
M
M
Event input assignment 2
ev-2
none
M
∗∗
∗
∗
∗
∗
∗
F
F

12 Limit Controller E5CN-FR
Limit Controller Functions
When the measured temperature (PV) exceeds the limit SP, the limit output relay turns OFF and the OUT1 operation indicator turns ON. If the
limit output relay turns OFF (limit alarm is ON), the limit output relay will remain off until the operator manually resets the Limit Controller.
■Selecting Upper/Lower Limit
•The upper/lower limit selection setting enables switching between upper limit and lower limit operation.
•The default setting is for upper limit operation.
Select either upper limit or lower limit.
■Resetting Limit Outputs
•Limit outputs can be reset by pressing the Level Key/Reset Key for 1 second min. while in the operation level.
•The limit output reset operation can be used to reset limit outputs and annunciator outputs.
∗When the limit status is OFF, the limit output is cleared and the limit output relay turns ON. When the limit status is ON (limit over status), limit
outputs will not be reset.
∗The annunciator output turns OFF regardless of the limit status.
∗Event inputs used as reset inputs (for resetting limit outputs) can be received while in the operation level, adjustment level, or protect level.
Power ON
Limit SP
Malfunction
Control SP
Temperature in furnace
Before turning
ON power Limit output relay ON Limit output relay OFF
Hysteresi
s
Annunciator output
Limit output relay
Limit status
Limit SP
Hysteresis
ON
OFF
ON
OFF
ON
OFF
(1) RESET
(Reception
not possible)
(3) RESET
(Reception
not possible)
(2) RESET
(Reception
possible)

Limit Controller E5CN-FR 13
■Example of Typical Use
Application examples are for reference only. In actual application, confirm the functionality and safety of all equipment in advance. In particular,
when considering an application requiring a high degree of safety, take into account all ratings, performance capacities, failsafe measures, and
other safety measures required by the application, and consult with your OMRON representative to confirm specifications and capabilities.
Controlled device: Furnace/oven
Sensor input
Limit Sensor
Temperature Sensor
Heater
Temperature Controller
(e.g., E5CN)
E5CN-FR Limit Controller
Limit output
Control output
Sensor input
SSR

14 Limit Controller E5CN-FR
Precautions
Precautions for Safe Use
1. Do not use this product in the following places:
•Places directly subject to heat radiated from heating equipment.
•Places subject to splashing liquid or oil atmosphere.
•Places subject to direct sunlight.
•Places subject to dust or corrosive gas (in particular, sulfide gas
and ammonia gas).
•Places subject to intense temperature change.
•Places subject to icing and condensation.
•Places subject to vibration and large shocks.
2. Use and store within the rated temperature and humidity ranges.
Provide forced-cooling if required.
3. To allow heat to escape, do not block the area around the
product. Do not block the ventilation holes on the product.
4. Be sure to wire properly with correct polarity of terminals.
5. Use specified size (M3.5, width 7.2 mm or less) crimped
terminals for wiring. Use wires with a gage of AWG24 to AWG14
(equal to cross-sectional areas of 0.205 to 2.081 mm2). (The
stripping length is 5 to 6 mm.).
6. Do not wire the terminals that are not used.
7. Allow as much space as possible between the product and
devices that generate a powerful high-frequency or surge.
Separate the high-voltage or large-current power lines from other
lines, and avoid parallel or common wiring with the power lines
when you are wiring to the terminals.
8. Use this product within the rated load and power supply.
9. Make sure that the rated voltage is attained within two seconds
of turning the power ON.
10. Make sure the product has 30 minutes or more for warm up.
11. A switch or circuit breaker must be provided close to the product.
The switch or circuit breaker must be within easy reach of the
operator, and must be marked as a disconnecting means for this
unit.
12. Always turn OFF the power supply before pulling out the interior
of the product, and never touch nor apply shock to the terminals
or electronic components. When inserting the interior of the
product, do not allow the electronic components to touch the
case.
13. Do not use paint thinner or similar chemical to clean with. Use
standard grade alcohol.
14. Design the system (e.g., control panel) considering the 2
seconds of delay that the product's output to be set after power
ON.
15. The output may turn OFF when shifting to certain levels. Take
this into consideration when performing control.
16. Refer to the instruction sheet for installing Option Unit (E53-
CN03N/E53-CNBN/E53-CNPBN).
Do not touch the terminals while power is being supplied.
Doing so may occasionally result in minor injury due to
electric shock.
Do not allow pieces of metal, wire clippings, or fine
metallic shavings or filings from installation to enter the
product. Doing so may occasionally result in electric
shock, fire, or malfunction.
Do not use the product where subject to flammable or
explosive gas. Otherwise, minor injury from explosion
may occasionally occur.
Never disassemble, modify, or repair the product or touch
any of the internal parts. Minor electric shock, fire, or
malfunction may occasionally occur.
Caution: Risk of Fire and Electric Shock
a) This product is UL listed as Open Type Process
Control Equipment. It must be mounted in an
enclosure that does not allow fire to escape externally.
b) More than one disconnect switch may be required to
de-energize the equipment before servicing.
c) Signal inputs are SELV, limited energy.
d) Caution: To reduce the risk of fire or electric shock, do
not interconnect the outputs of different Class 2
circuits.
If the output relays are used past their rated load or life
expectancy, contact fusing or burning may occasionally
occur. Always consider the application conditions and the
inrush current, and use the output relays within their rated
load and electrical life expectancy. The life expectancy of
output relays varies considerably with the output load and
switching conditions.
Tighten the terminal screws to between 0.74 and 0.9 N·m.
Loose screws may occasionally result in fire.
Set the parameters of the product so that they are
suitable for the system. If they are not suitable,
unexpected operation may occasionally result in property
damage or accidents.
Warning: To reduce the risk of electric shock or fire, install
in a Pollution Degree 2 environment (a controlled
environment relatively free of contaminants).
A malfunction in the product may occasionally make
control operations impossible or prevent alarm outputs,
resulting in property damage to connected equipment
and machinery. To maintain safety in the event of
malfunction of the product, periodically check the Limit
Controller's operation.
!CAUTION

Limit Controller E5CN-FR 15
Precautions for Correct Use
Service Life
1. Use the Limit Controller within the following temperature and
humidity ranges:
Temperature: −10 to 55°C (with no icing or condensation)
Humidity: 25% to 85%
If the Controller is installed inside a control board, the ambient
temperature must be kept to under 55°C, including the
temperature around the Controller.
2. The service life of electronic devices like Limit Controllers is
determined not only by the number of times the relay is switched
but also by the service life of internal electronic components.
Component service life is affected by the ambient temperature:
the higher the temperature, the shorter the service life and, the
lower the temperature, the longer the service life. Therefore, the
service life can be extended by lowering the temperature of the
Limit Controller.
3. When two or more Limit Controllers are mounted horizontally
close to each other or vertically next to one another, the internal
temperature will increase due to heat radiated by the Limit
Controllers and the service life will decrease. In such a case, use
forced cooling by fans or other means of air ventilation to cool
down the Limit Controllers. When providing forced cooling,
however, be careful not to cool down the terminals sections alone
to avoid measurement errors.
Measurement Accuracy
1. When extending or connecting the thermocouple lead wire, be
sure to use compensating wires that match the thermocouple
types.
2. When extending or connecting the lead wire of the platinum
resistance thermometer, be sure to use wires that have low
resistance and keep the resistance of the three lead wires the
same.
3. Mount the Limit Controller so that it is horizontally level.
4. If the measurement accuracy is low, check to see if input shift has
been set correctly.
Waterproofing
The degree of protection is as shown below. Sections without any
specification on their degree of protection or those with IP@0 are not
waterproof.
Front panel: NEMA4X for indoor use (equivalent to IP66)
Rear case: IP20, Terminal section: IP00
Operating Precautions
1. It takes approximately two seconds for the outputs to turn ON
from after the power supply is turned ON. Due consideration must
be given to this time when incorporating Limit Controllers in a
sequence circuit.
2. Avoid using the Controller in places near a radio, television set, or
wireless installing. These devices can cause radio disturbances
which adversely affect the performance of the Controller.
Mounting
Mounting to a Panel
1. To mount the Controller so that it is waterproof, insert the
waterproof packing onto the Controller. Group mounting does not
allow waterproofing. The waterproof packing is not required if
waterproof is not necessary.
2. Insert the E5CN-FR into the mounting hole in the panel.
3. Push the adapter along the Controller body from the terminals up
to the panel, and fasten it temporarily.
4. Tighten the two fixing screws on the adapter. Alternately tighten
the two screws a little at time to keep them balanced. Tighten
them to a torque of 0.29 to 0.39 N·m.
Attaching the Terminal Cover
Make sure that the “UP” letters on the E5CN-FR are at the top and
insert the terminal cover into the holes at the top and bottom of the
Controller.
Removing the Controller from the Case
When carrying out maintenance on the Controller, the Controller can
be removed from the case leaving the terminal leads attached. The
Controller can be removed from the case only with the E5CN-FR.
1. Insert the tool into the slots (one on the top and one on the
bottom) and release the hooks.
2. Insert the tool into the gap between the front panel and rear case
and pull out the front panel slightly. Hold both sides of the front
panel and draw out the Controller towards you. Do not apply
unnecessary force.
3. Before inserting the Controller, confirm that the sealing rubber is
in place. Insert the Controller into the rear case until you hear a
click. Press on the hooks on the top and bottom of the rear case
to be sure that the hooks are securely locked in place.Be sure
that electronic parts do not come in contact with the case.
Wiring Precautions
•Separate input leads and power lines to protect the Controller and
its lines from external noise.
•Use wires of a thickness of AWG24 (0.205 mm2) to AWG14
(2.081 mm2).
The exposed current-carrying part to be inserted into terminals
must be 5 to 6 mm.
•We recommend using crimp terminals when wiring the terminals.
•Tighten terminal screws to a torque of 0.74 to 0.90 N·m.
•Use the following type of crimp terminals for M3.5 screws.
Terminal Cover
(order separately)
Mounting Adapter
(Accessory)
E5CN-F
R
Waterproof packing
Panel
20 min.
0.4 2.0
E5CN
PV
SV
ALM1
ALM2
ALM3
HA
OUT1
STOP
OUT2
CMW MANU
(1)
(1)
(2)
(3)
Tool insertion hole
Flat-blade screwdriver
(Unit: mm)
7.2 mm min.
7.2 mm min.

16 Limit Controller E5CN-FR
Related Product Information
■Please use these products in combination with the Limit Controller.
Digital Temperature Controller
E5CN/E5CN-U
This Best-selling General-purpose 48 ×48-mm
Temperature Controller Is Now Better.
USB-Serial Conversion Cable and Support
Software Are Also Available.
Catalog Number:
H126
Infrared Thermosensor
ES1B
Achieve Low-cost Measurements with an Infrared
Thermosensor. Catalog Number:
H127

Limit Controller E5CN-FR 17

18 Limit Controller E5CN-FR

Limit Controller E5CN-FR 19

20
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. H132-E1-01
OMRON Corporation
Industrial Automation Company
Industrial Devices and Components Division H.Q.
Measuring Components Department
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: [phone]/Fax: [phone]
Printed in Japan
1004-1M (1004) (O)
Warranty and Application Considerations
Read and Understand this Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or
other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER
ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET
THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS,
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE
PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED,
INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE
MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of
products in the customer's application or use of the products.
Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will
be used.
Know and observe all prohibitions of use applicable to this product.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT
ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON
PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR
SYSTEM.
Disclaimers
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a
warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application
requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with
your OMRON representative at any time to confirm actual specifications of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.