Omron E5EX-H User manual

1
TEMPERATURE CONTROLLER E5EX–H
DIN-sized (96 x 48-mm) Temperature
Controller Featuring Advanced PID
Control and Heater Burnout Detection
Advanced PID control with two degrees of freedom
improves stability and response speed.
Heater burnout alarm built in.
Select from seven temperature sensors and a total
of 14 temperature ranges (seven Fahrenheit and
seven Celsius).
High accuracy: 0.3% of set value.
Ordering Information
The model numbers for the basic T emperature Controller , its five Control Output Units, and two Current T ransformers are given below . Be sure
to specify an Control Output Unit and Current T ransformer when ordering.
Example: E5EX–AH, Relay Output Unit E53–R, Current T ransformer E54–CT1
Models set to display in degrees Fahrenheit ( ° F) can be ordered by adding “–F” to the end of the model number . Example: E5EX–AH–F
The scale indication switch will then be set to ° F prior to shipment from the factory .
Temperature Controllers
Model E5EX–AH
Control Output Units
Output Relay output SSR output Voltage output (for driving SSR)
12 VDC, NPN 24 VDC, NPN 24 VDC, PNP
Model E53–R E53–S E53–Q E53–Q3 E53–Q4
Current Transformers
Hole diameter 5.8 mm 12.0 mm
Model E54–CT1 E54–CT3
Temperature Ranges
Input (switch
selectable) Thermocouple Temperature
resistance
thermometer
K (CA)
Chromel vs.
alumel
J/L (IC)
Iron vs.
constantan
T/U (CC)
Copper vs.
constantan
E (CRC)
Chromel
vs.
constantan
R (PR)
Platinum vs.
platinum
rhodium 13%
S
Platinum vs.
platinum
rhodium 10%
PT platinum
resistance
thermometer
(Pt100/JPt100)
Range °C –200 to 1,300 –100 to 850 –200 to 400 0 to 600 0 to 1,700 0 to 1,700 –99.9 to 450.0
°F –300 to 2,300 –100 to 1,500 –300 to 700 0 to 1,100 0 to 3,000 0 to 3,000 –99.9 to 800.0
Resolution ( °C/°F)
(main settings and
alarm)
1 0.1

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Specifications
Temperature Controller Ratings
Supply voltage 100 to 240 V AC, 50/60 Hz
Operating voltage range 85% to 1 10% of rated supply voltage
Power consumption Approx. 10 V A (at 100 V AC) to 15 V A (at 240 V AC)
Input Thermocouple (K/J/T/E/R/S/L/U) or temperature resistance thermometer (Pt100/JPt100) selectable
Current T ransformer input See Current T ransformer Ratings .
Control output See Control Output Unit Ratings .
Operating mode ON/OFF or PID with auto-tuning
Alarm output Relay output: SPST–NO; 3 A, 250 V AC
Heater burnout alarm output Relay output: SPST–NO; 1 A, 250 V AC
Setting method Digital setting via up and down keys
Indication method Digital indication (character heights: 1 1 mm and 8 mm)
Other functions Upper and lower limits for set value
Key protection
Input shift
Display unit selection ( °C/°F)
Normal and reverse output selection
W atchdog timer function (Detects failures in the CPU and restores the CPU.)
Approved standards UL (File No. E68481)
CSA (File No. LR59623)
SEV
Control Output Unit Ratings
Relay Output Unit E53–R SPDT ; 5 A, 250 V AC (resistive load)
SSR Output Unit E53–S SPST–NO; 1 A, 75 to 250 V AC
E53–Q 40 mA, 12 VDC; NPN (with short-circuit protection)
Voltage Output Unit (for driving SSR) E53–Q3 20 mA, 24 VDC; NPN (with short-circuit protection)
E53–Q4 20 mA, 24 VDC; PNP (with short-circuit protection)
Note: The control output is optically insulated from the internal circuits.
Current Transformer Ratings
Max. continuous heater current 50 A
Dielectric strength 1,000 V AC
Vibration 50 Hz (approx. 10G)
Weight E54–CT1: Approx. 1 1.5 g; E54–CT3: Approx 50 g

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Temperature Controller Characteristics
Setting accuracy* + 0.3% of set value or ±1°C, whichever ± 1 digit max.
Set value coincides with the indicated value, because no relative error exists between both values.
Indication accuracy
Hysteresis (during ON/OFF
control action)
0.0° to 999.9 °C/° F (in units of 0.1 °)
Proportional band 0.0° to 999.9 °C/° F (in units of 0.1 °)
Integral time (Reset time) 0 to 3,999 s (in units of 1 s)
Derivative time (Rate time) 0 to 3,999 s (in units of 1 s)
Alarm output setting range Thermocouple: –999 ° to 9,999 °C/°F
Platinum resistance thermometer (Pt100): –99.9 ° to 999 °C/°F
Control period Pulse output: 1 to 99 s (in units of 1 s)
Sampling period 500 ms
Output refresh period Pulse output: 500 ms
Current output: 500 ms
Display refresh period 500 ms
Input shift Thermocouple: –999 ° to 9,999 °C/°F
Platinum resistance thermometer (Pt100): –99.9 ° to 999.9 °C/°F
Insulation resistance 20 M Ω min. (at 500 VDC) (measured with a Control Output Unit attached)
Dielectric strength 2,000 V AC 50/60 Hz for 1 minute between terminals of dif ferent polarity (measured with a Control
Output Unit attached)
Vibration Malfunction durability: 2 to 55 Hz, 2G 10 min each in X, Y , and Z directions
Mechanical durability: 10 to 55 Hz, 0.75-mm double amplitude 2 hrs each in X, Y , and Z directions
Shock Malfunction durability: 100 m/s
2
3 times each in 6 directions
Mechanical durability: 300 m/s
2
3 times each in 6 directions
Ambient temperature Operating:–10° to 55 °C
Storage: –25°
to 65 °C
Humidity 35% to 85%
Memory protection Non-volatile memory
Enclosure ratings Front panel controls: IEC standard IP50 (dust-proof)
Rear case: IEC standard IP20
Terminals: IEC standard IP00
Weight 300 g
*The accuracy of U at temperatures from –150°to 400°C (–240°C to 700°F) is ±2°C (±3.6°F) ±1 digit. Accuracy is reduced below –150°C
(–240°F).
The accuracy of R and S from 0 ° to 200 °C (0° to 400 °F) is ±3°C (±5.4° F) ± 1 digit.
Output Unit Characteristics
Relay unit life expectancy Mechanical: 10,000,000 operations min.
Electrical: 100,000 operations min.
Current Transformer Characteristics
Max. heater current 50 A, single-phase
Indication accuracy of heater current ± 5% of full scale ± 1 digit max.
Heater current setting range 0.1 to 49.9 A* (in units of 0.1 A)
Min. detectable ON time 200 ms**
*Heater burnout is not detected when current is set to 0.0 A; the burnout alarm will be automatically turned ON when current is set to 50.0
**When the control output is ON for less than 200 ms, heater burnout is not detected and heater current is not measured.

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Dimensions
Note: All units are in millimeters.
Temperature Controller
Panel Cutout
Mounting
screw
Side-by-side Mount -
ing of N Controllers
120 min.
Current Transformer
E54–CT1 E54–CT3
5.8
dia. 12
dia.
2.36 dia
2.8 dia
Two, 3.5 dia. holes
Nomenclature
Process V alue (PV) Display
Displays not only the process temperature but also indi-
cates the parameter being displayed on the SV display
and error messages.
Set V alue (SV) Display
Displays set temperature and other parameters.
Alarm Indicator
Lit when the alarm output is ON.
Auto-tuning Key
Press
this key for 1 second or longer when PID operation
has been designated to start auto-tuning. Press this key for
1 second or more during auto-tuning to stop auto-tuning.
Up Key
When pressed, increases the set temperature or other
parameters. Successively increases the value when
held
down.
Down Key
When
pressed, decreases the set tem -
perature
or other parameters. Succes -
sively decreases the value when held
down.
Display Key
Use this key when shifting the dis -
play
to the next parameter .
Level Key
Press for 2 seconds minimum to
change levels to set different
groups
of parameters.
Output Indicator
Lit
when the control output is ON.
Auto-tuning Indicator
Flashes on and off about every
second when auto-tuning is tak-
ing
place.
Heater Burnout Indicator
Lights when a heater burnout is
detected
and stays lit until reset.
Sensor Error Indicator
Lights when sensor malfunctions
Front Cov-
er

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Operation
NOTICE: Always turn of f the power supply to the T emperature Controller before changing any switch settings.
Accessing Switches and Selectors
Before supplying power to the T emperature Controller , the selectors and switches shown below must be set to specify the temperature sensor ,
functions,
and alarm mode. The T emperature Controller must be equipped with one of the six Control Output Units. The Control Output Unit
must be ordered separately .
1. Remove the internal mechanism from the housing. Lift the
internal
mechanism while pressing the hook at the bottom of
the front panel.
Hook
Pull out the internal mechanism while holding
down the hook with your finger .
2. Connect a Control Output Unit to the vacant socket on one of
the printed circuit boards (see the figure below). A white
square
is marked on the Control Output Unit. Be sure to install
the Unit with this marking facing the direction indicated by the
arrow in the figure below .
Mount the Control Output Unit
with this mark facing the di -
rection indicated by the arrow .
T o remove a Control Output Unit, push it up with the tip of a
flat-bladed screwdriver as illustrated below .
Flat-blade
screwdriver
3. Three internal switches must be set: the temperature sensor
selector, the operating mode selector, and the alarm mode
selector.
The following figure shows the locations of internal
switches on the internal mechanism.
Alarm mode selector (SW205)
Protection switch (SW101)
Operating mode selector (SW201)
T emperature sensor
selector (SW206)

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Temperature Sensor Selector (SW206,
INPUT)
This selector determines the temperature sensor to be used. It is set
to position 2 before shipment to designate a K-type (chromel-alumel
thermocouple) temperature sensor . The following table lists the oth -
er
possible settings for temperature sensors. Refer to temperature
range charts under Ordering Information for further information.
The scale displayed ( ° C or ° F) is set on the operating mode selector .
Switch
setting Temperature sensor
code
T emperature range
°C°F
0R 0 to 1,700 0 to 3,000
1S 0 to 1,700 0 to 3,000
2K –200 to 1,300 –300 to 2,300
3J –100 to 850 –100 to 1,500
4T –200 to 400 –300 to 700
5E 0 to 600 0 to 1,100
6JPt100* –99.9 to 450.0 –99.9 to 800.0
7Pt100* –99.9 to 450.0 –99.9 to 800.0
8L –100 to 850 –100 to 1,500
9U –200 to 400 –300 to 700
*JPt100: 100° C/139.16 Ω (JIS (Japan Industrial Standard)).
**Pt100: 100° C/138.5 Ω(DIN, JIS).
Operating Mode Selector (SW201,
FUNCTION)
This DIP switch selects the operational aspects listed in the follow -
ing
table.
Function Pin
number Pin setting Control setting
Operating mode 1 ON ON/OFF operation
OFF PID operation*
Control output 2 ON Normal (cooling)
OFF Reverse (heating)
Input shift 3 ON Enabled
OFF Disabled
Not used.** 4 Leave turned OFF .
Indication 5 ON °F
OFF °C
PID display 6 ON Enabled
OFF Disabled
*PID with 2 degrees of freedom
**Always operate with pin 4 OFF . Operating with pin 4 ON could re -
sult
in malfunction.

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Alarm Mode Selector (SW205: ALM)
An alarm mode selector is provided. T en alarm modes, listed in the following table, can be selected using this switch. The switch is set to position
2 before shipment, i.e., the upper-limit alarm mode.
Switch Mode (SW205) Alarm output Setting range
setting Alarm operation Display
0 Alarm No display OFF –––
1 Upper- and lower-limit
alarms )--( XX
SP
Thermocouple: 0 ° to
9,999°
Platinum resistance
thermometer: 0 ° to
999.9°
2 Upper-limit alarm
---( X
(See Note 1.)
Thermocouple: –999 ° to
9,999°
3 Lower-limit alarm
)ĆĆ--- X
Platinum resistance
thermometer: –99.9 ° to
999.9°
4 Upper- and lower-limit
range alarm
-()- XX
Thermocouple: 0 ° to
9,999°
5 Inverse upper- and
lower-limit alarm with
standby sequence
3--e XX
Platinum resistance
thermometer: 0 ° to
999.9°
6 Upper-limit alarm with
standby sequence
---e X
(See Note 1.)
Thermocouple: –999 ° to
9,999°
7 Lower-limit alarm with
standby sequence
3--- X
Platinum resistance
thermometer: –99.9 ° to
999.9°
8 Event alarm
1--( Y
0
9 Proportional alarm
pro
See Note 2.
Note: 1. If a negative value is set as X, operation will be as follows:
Lower-limit alarm
Upper-limit alarm
Proportional alarm
X
X
X
SP
SP
SP
2. The
alarm mode selector can be used to select the proportional alarm mode. The proportional alarm function is initiated when the
temperature reaches the set alarm point (A in the figure below), which is the lower limit of a proportional band. When the tempera -
ture rises to the upper limit of the proportional band (point B in the figure), the alarm output is turned ON. This alarm function is
convenient
when the main setting is used for heating control, while the proportional alarm function is used for cooling control, so that
heating and cooling control actions can be easily performed.
PB: proportional band (fixed to 42 °C)
Proportional period is 20 seconds.
The operation of the alarm is not af fected by pin
2 of the operating mode selector (SW201).
X
PB
AB
ON
SP

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Standby Sequence
Alarm functions with standby sequence suppress nuisance alarms
when the controller is first powered up. As shown in the temperature
charts at right, the alarm output is suppressed until the temperature
exceeds the alarm band or alarm limit one time.
Protection Switch (SW101, PROTECT)
When the protection switch is set to the ON position, the level key, up and down keys, and auto-tuning key will not operated. In effect, the
Temperature
Controller is write-protected and the set values (such as the alarm value) can be read out only .
Inputting Parameters
The T emperature Controller has three indication levels, 0, 1, and 2, in which only specific parameters can be set. Level 0 is the default and is
automatically entered during power up. T o change the mode to manipulate a dif ferent group of parameters, hold down the level key for 2 sec -
onds
or more. The indication level mode changes as shown below .
––––––– ––––––– –––––––
Level 0
Power up
Level 1 Level 2
Press the level key. Press the level key. Press the level key.
Process temperature,
alarm value, input shift,
PID constants
Setting limits, control peri -
od, hysteresis, heater cur -
rent, heater burnout set -
ting
Control output variable,
temperature sensor type,
alarm mode
Level 0
In this mode, parameters such as the alarm values, PID constants,
and input shift values can be set or changed. When these parame -
ters are being set or changed, the new values are displayed on the
SV display . The parameter to be manipulated is selected by press -
ing the display key the required number of times. Note that the PID
constants are displayed only when pin 1 on the operating mode se -
lector
DIP switch (SW201) is set to the OFF position and pin 6 to the
ON position. (The flow chart shown below assumes the settings are
as preset at the factory .)
Process temperature
Power up (temperature
setting)
Press a.
Press a.
Alarm value
al
After al has been displayed, press the display key again. Then the
PID constants can be manually set or changed, provided pin 6 on
the internal operating mode selector (SW201) has been set to the
ON
position. The message displayed on the PV display changes as
shown below each time the display key is pressed.
Process temperature
Power up (temperature
setting)
Press a.
Press a.
Press a.
Press a.
Press a.
Alarm value
Proportional band
Integral time
Derivative time
i
d
al
p

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Alarm: al
When al is displayed on the PV display , the alarm value for alarm
output can be set on the SV display . When the temperature exceeds
or falls below the set alarm value, the corresponding alarm output is
produced and the ALM indicator on the front panel lights. Usually,
the alarm value is set as a deviation from the set temperature (set
point), but it can also be set as an absolute value when the event
alarm
mode is selected. Set the alarm value by using the up or down
key while al is displayed. The message is not displayed if the alarm
mode selector is set to position 0.
Proportional Band: p
While pis displayed on the PV display, the proportional band (P
constant)
can be changed using the up or down key . The new value
will be displayed on the SV display . The P constant can be set in a
range from 0.0 ° to 999.9 °C/°F in units of 0.1 °C/°F . The factory set -
ting
is 40.0 °C/°F.
Integral T ime (Reset T ime): i
The
integral time (I constant) can be changed when the character i
is
displayed on the PV display . Use the up or down key to change the
I constant. The allowable range is from 0 to 3,999 seconds in units of
1 second. The factory setting is 240 seconds.
Derivative T ime (Rate T ime): d
The
derivative time (D constant) can be changed when the charac -
ter
d is displayed on the PV display . Use the up or down key to set or
change the D constant. The allowable range is from 0 to 3,999 sec -
onds
in units of 1 second. The factory setting is 60 seconds.
Input Shift: in-5
When pin 3 on the internal operating mode selector DIP switch
(SW201) is set to the ON position, the input shift function can be
used.
This function is used to shift the temperature display from the
measured value by a desired value, as illustrated by the examples in
the following table:
Input shift value Temperature
measured by
sensor
Displayed
temperature
0 (without shift) 100°C 100°C
10 (of fset by 10 °C) 100°C110°C
–10 (of fset by
–10°C) 100°C 90°C
This function can be used mainly for fine tuning compensation,
while
leaving the set temperature unaf fected. Select this function by
pressing the display key three times in display level 0, as follows:
Press a.
Press a.
Power up (temperature
setting)
Press a.
Press a.
Press a.
Press a.
Alarm value
Process temperature
Input shift
Integral time setting
Proportional band setting
derivative time setting
al
in-5
p
i
d
While in-5 is displayed on the PV display , the input shift, the value
by which the measured temperature is shifted and displayed, can be
set and displayed on the SV display. The range in which the input
shift can be set differs depending on whether a thermocouple or
temperature resistance thermometer is used as the temperature
sensor.
When a thermocouple is used, the allowable range is from
–999 to 9,999 °C/° F in units of 0.1 °C/° F when a temperature resis -
tance thermometer is used. The input shift function remains ef fec-
tive even if pin 3 on the operating mode selector DIP switch
(SW201)
is changed to the OFF position after the input shift value
has been set. If the displayed temperature does not need to be
shifted,
set 0 °C/° F in response to in-5.

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Level 1
In this level, the upper- and lower-limit values of the temperature
range, control period, hysteresis, heater current, and heater burn-
out
alarm can be set.
When pin 1 on the operating mode selector (SW201) is set to the
OFF position (PID action), the temperature setting range limit val-
ues,
control period, heater current, and heater burnout alarm value
can be set or changed. Any of these parameters can be selected by
pressing display key the required number of times as follows:
Upper-limit value of tem -
perature setting range
Lower-limit value of temper -
ature setting range
Control period
Press a.
Press a.
Press a.
Press a.
Press a.
5l-l
5l-h
cp
ct
hb
Heater current
Heater burnout alarm
Lower/Upper Limits of T emperature Range: sl-l , sl-h
–200 0 400 1,300
SL–L SL–H
Basically, the temperature range that can be measured is deter-
mined
by the temperature sensor to be used. For example, when a
K-type (chromel-alumel thermocouple) temperature sensor is se-
lected,
the measurable range is from –200 ° C to 1,300 ° C. However ,
this
temperature range can be narrowed, say , to 0 ° C to 400 ° C. T o do
this, set the lower-limit value of the temperature setting range, in this
case to 0°C, on the SV display by using the up or down key while
5l-l is displayed on the PV display. Similarly, set the upper-limit
value, 400°C, while 5l-h is displayed. If the process temperature
falls below the set lower-limit value or exceeds the set upper-limit
value,
it is displayed on the PV display provided it is within the tem -
perature
range of the temperature sensor .
Control Period: cp
To use a control period, pin 1 on the operating mode selector
(SW201)
must be set to the OFF position. When cp is displayed on
the PV display , the control period can be set or changed in a range
from 1 to 99 seconds in units of 1 second. The factory setting is 20
seconds. When a Voltage Output Unit is used, it is recommended
that
the control period be set to 20 seconds or less (ideally , about 2
seconds), so that the control action can be performed more accu-
rately.
Control output
ON
OFF 20 seconds
When control period is
set to 20 seconds
Heater Burnout Alarm: ct , hb
Set
a burnout current value to determine disconnections of the heat -
er. Firstly, a current measured in the heater current value mode is
displayed
in amperes. The normal current value is the current value
with the control output ON. Disconnect the heater and read the cur -
rent value and obtain the set value from the following:
Normal current value + Current value with disconnected heater
2
Use display key and set the PV display to hb. The difference be-
tween
the normal current and the one with the disconnected heater
should be 2.5 A minimum. If it is less than 2.5 A, the operation to de -
tect the disconnection of the heater may be not stable. The value
can
be set with in increments of 0.1 A from 0.0 to 50.0 A.
Note 1: Do not allow a current of more than 50 A to flow in the Con -
troller;
the maximum continuous heater current is 50 A.
2: Set the value to 0.0 A if the heater burnout alarm is not used,
in which case the alarm will not function at all.
Heater Burnout Alarm and Sensor Abnormality Alarm
Alarm Heater burnout
alarm Sensor abnormality
alarm
Output terminal T erminal output is ON when either alarm
is ON.
Output ON When a heater
burnout is detected.
When sensor is in
error.
Output display
monitor hb
on front panel is
lit. 5en5
on front panel
is lit.
Output retention
function Yes No
Output reset Set heater burnout
alarm value to 0.0
A or switch power
OFF and then turn
on power .
Output is OFF
when sensor ab -
normal condition is
solved
Influence on con -
trol output/alarm
output
None Control output:
OFF; Alarm output:
ON (proportional
alarm output is
OFF)

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*Current transformer
Output
controller
Heater load
Input
sensor
*This wiring must be passed through the hole of the special current
transformer. The current transformer can be connected to the sen-
sor in any polarity
200VAC
alarm
Sensor abnormality Heater burnout
Temperature
Controller
Connected to T emperature Controller
*Wire through the hole on the Current
Transformer.
The Current T ransformer and
the Temperature Controller can be con-
nected with wires without polarity.
Connected to heater.
Connected to Temper-
ature Controller.
2. ON/OFF Control
When
pin 1 on the operating mode selector (SW201) is set to the ON
position, the temperature setting range limit values, hysteresis,
heater current, and heater burnout alarm value can be set or
changed.
Any of these parameters can be selected by pressing dis -
play key the required number of times as follows.
Upper-limit value of tem -
perature setting range
Lower-limit value of temper -
ature setting range
Hysteresis
Press a.
Press a.
Press a.
Press a.
Press a.
5l-l
5l-h
hys
ct
hb
Heater current
Heater burnout alarm
Of the above parameters, only the hysteresis, which is described
below, differs from the parameters for PID control. Refer to 1. PID
Control
for details on other parameters.
Hysteresis: hys
The
hysteresis value for the ON/OFF control action can be set in a
range from 0.0 ° to 999.9 °C/° F while hy5 is displayed on the PV dis -
play. Use the up or down key to do this. The factory setting is
0.8°C/°F.
Reverse operation
(heating control)
Normal operation
(Cooling control)
SP
Hysteresis
Low temperature High temperature
Hysteresis
SPLow temperature High temperature

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Level 2
In level 2 the control output variable, temperature sensor, and
modes
for alarm output can be monitored. Note that level 2 is a mon -
itoring level only and thus no parameter can be changed. When the
level key is pressed for more than 2 seconds after power up, 5l-l is
displayed on the PV display. After this message has been dis-
played, holding down the Level key again for 2 seconds or more
causes
o to be displayed on the PV display . When this message has
been displayed, the control output variable, selected temperature
sensor, and alarm modes can be monitored each time the display
key is pressed, as follows:
Press a.
Press a.
Press a.
T
emperature sensor
Control output variable
Alarm mode
o
in-t
al
Control Output V ariable: o
When
the T emperature Controller enters level 2, the control output
amount is displayed on the SV display in a range of 0.0% to 100.0%.
Temperature Sensor: in-t
When in-t is displayed on the PV display, a message identifying
the
selected temperature sensor , i.e., the present setting of the tem -
perature
sensor selector (SW206), is displayed on the SV display .
The following table shows the messages that may be displayed:
Display Sensor
r pr R
5 pr S
k ca K
j ic J
t cc T
e cr E
jpt JPt100*
pt Pt100**
l ic L
u cc U
*Meets JIS 1981.
**Meets JIS 1989, DIN.
AL (Alarm Mode): al
While
al is displayed on the PV display in level 2, a message identi -
fying
the mode for alarm output or the present setting of the corre -
sponding
alarm mode selector (SW205) is displayed on the SV dis -
play. The following table shows the possible messages that may ap -
pear
on the SV display .
Display
Alarm mode
No display No alarm
)--( Upper- and lower-limit
alarms
---( Upper-limit alarm
)--- Lower-limit alarm
-()- Inverse upper- and lower-
limit alarm
3--e Upper- and lower-limit
alarms with standby se-
quence
---e Upper-limit alarm with
standby sequence
3--- Lower-limit alarm with
standby sequence
1--c Event alarm
pro Proportional alarm

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Beginning Control Operation
Temperature control is begun for the set values as soon as the pow -
er
is turned on, and temperature control is carried out according to
the parameters that have been input. To operate the Temperature
Controller
after all the parameters are input, turn the power of f once
and then on again.
Auto-tuning
When the A T key is pressed for 1 second or more, the T emperature
Controller
automatically starts tuning the PID constants. While auto-
tuning is taking place, the auto-tuning indicator on the front panel will
flash. The Temperature Controller executes control based on the
set
PID constants (factory set to P = 40 ° C, I = 240 seconds, and D =
60 seconds) until the temperature of the controlled system reaches
the set temperature. After that, the T emperature Controller automat -
ically
adjusts the PID constants using the limit cycle method. After
the automatic tuning of the PID constants has been completed, the
auto-tuning display goes out.
Auto-tuning can be carried out regardless of whether the T empera-
ture Controller is performing reverse (heating) or normal (cooling)
operation. To stop auto-tuning, hold down the AT key again for 1
second
or more. Automatic tuning can be executed at any time: on
power up, while the temperature is rising, and after the control ac -
tion has stabilized.
Set
temperature
Old PID
constants
Limit Cycle Method
New PID constants
A
T indicator blinks
AT key is pressed
Limit cycle method:
The optimum PID constants are calculated by this method by vary -
ing
the control output variable and generating external oscillation.
Advanced PID Control
Advanced PID control with two degrees of freedom adds a feed-for -
ward (FF) loop to the conventional PID controller . Whereas the con -
ventional PID controller responds to disturbance (d) to quickly
achieve
stability , it overshoots the target because it lacks suf ficient
control,
as shown below .
This is prevented in advanced PID control because the feed-for-
ward loop is not affected by disturbance. Here, the feed-forward
loop
operates from the target value (r) to achieve fast response with -
out
overshooting.
–+
–++
+y
d
r
FF
PID Control
object
Normal
PID
operation
E5EX–H
If response to target value improves, response to external
disturbances degrades.
If response to external disturbances value improves, re-
sponse to target value degrades.
Excellent response to both target value and external
disturbances.

E5EX–H E5EX–H
14
Error Messages
The T emperature Controller is provided with self-diagnostic functions, and will display the following error messages on the PV display in case of
an error .
Message Cause Control output Alarm output
ffff
Input temperature has risen beyond the upper limit of
the temperature range by more than 20 °C
OFF during reverse
(heating) operation
On during normal (cool -
ing) operation
Sends alarm signal in accor -
dance with the set alarm
mode.*
----
Input temperature has fallen below the lower limit of
the temperature range by more than 20 °C.
On during reverse
(heating) operation
OFF during normal
(cooling) operation
Sends alarm signal in accor -
dance with the set alarm
mode.*
5.err (flashes) The
thermocouple has burned out or short-circuit bar
has been removed. The platinum resistance thermom -
eter has burned out or A and B have been short-cir -
cuited.
OFF Sends alarm signal in accor -
dance with the set alarm
mode. Proportional alarm out -
put is OFF , however .
e111 (flashes)
e333 (flashes)
Memory failure ( e111 ) or A/D converter failure ( e333)
has occurred. T
emperature Controller must be repaired
if recovery is not made by turning power of f once and
on again.
OFF OFF
*When the J thermocouple is used, however , this error message is not displayed until the temperature has risen above the set temperature
range by more than 70 °C.
**When the temperature resistance thermometer is used, this message is displayed when the temperature has fallen to –99.9 °C.
The T emperature Controller displays the following error message in case of a Current T ransformer input error .
Message Cause Control output
Heater disconnection alarm output
ffff
CT input current is
over 50.0 A
Normal Retains condition there was before ffff is displayed. Alarm
output and sensor abnormality alarm output can function nor -
mally.
Installation
Wiring
*Current Transformer must be either
E54–CT1 or E54–CT3.
**Heater burnout alarm output terminal is
used to indicate both heater disconnection
and sensor errors.
For SSR
output For voltage output For relay output
Control
output
Alarm output
Heater burnout alarm output**
Current Transformer*
FG 100 to 240 VAC, 50/60 Hz
Use these terminals when connecting a
platinum
resistance thermometer (remove short
bar from terminals 13 and 14).
Use these terminals when connecting a
thermocouple (do not remove short bar
from terminals 13 and 14).
40 mA,
12 VDC Ground FG terminal 18 to avoid ambient noise.
Do not connect unused terminals.

E5EX–H E5EX–H
15
Precautions
Mounting
The dimensions of the Temperature Controller conform to DIN
43700.
Recommended panel thickness is 1 to 8 mm.
Do not install the Temperature Controller in a location exposed to
excessive
dust or corrosive gases. Moreover , avoid locations sub -
ject
to heavy vibration or shock, water or oil spray , or high tempera -
tures.
Isolate the T emperature Controller from equipment that gen -
erates
strong, high-frequency noises such as high-frequency weld -
ers.
Attach the two mounting fixtures supplied with E5EX–AH on the top
and bottom of the T emperature Controller . T ighten the screws of the
mounting fixtures with your fingers.
Connection Examples
With Solderless T erminal:
Use M3.5 solderless terminals with the Temperature Controller’s
M3.5 self-rising pressure plate screws.
Solder-dipped Leads:
Strip 6 to 12 mm of the lead wires and carefully arrange the wire tips.
Do not tighten the terminal screw with excessive force. The terminal
block of the T emperature Controller is constructed so that the lead
wires can be connected to all the terminals from the same direction.
Top
Bottom
Temperature Sensor Connection
To reduce induced noise, the lead wires connecting the temperature
sensor to the T emperature Controller must be separated from pow -
er
lines and load lines.
Use the specified compensating conductors for thermocouples.
When
using a thermocouple as the temperature sensor , attach the
short-circuit bar shown in the terminal block diagram on the hous -
ing.
Use lead wires having a small resistance for temperature resis -
tance
thermometers.
Be sure to remove the short-circuit bar from the terminals when a
temperature
resistance thermometer is used.
Sequenced Circuits
Several seconds are required until the relay is turned ON after pow -
er
has been supplied to the T emperature Controller . Therefore, take
this time delay into consideration when designing sequenced cir-
cuits
which incorporate a T emperature Controller .
Terminal Layout Diagram on the Housing
The T emperature Controller allows an input and output device to be
freely selected. Use the terminal layout diagram attached on the
housing
of the T emperature Controller to identify the output device
mounted in the T emperature Controller , by making the diagram as
follows:
Check here with a felt-tip pen.
Stickers
Stickers indicating the temperature sensor type (R, S, K, J, etc.) and
Control Output Unit (R, S, and Q) are supplied with the T emperature
Controller.
Attach these stickers on the front panel as shown, allow -
ing
the temperature sensor and Control Output Unit mounted in the
Temperature Controller can be easily discerned.
Sticker identifying
Control Output Unit
Sticker identifying
temperature sensor

E5EX–H E5EX–H
16
OMRON Corporation
Temperature Control Devices Division
9th Fl., Osaka Center Bldg.
4-1-3, Kyutaro-machi, Chuo-ku,
Osaka 541 Japan
Phone: [phone] Fax: [phone]
Telex: 522-2484 OMRONO J
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. T o convert grams into ounces, multiply by 0.03527.
Cat. No. H49–E1–1 In the interest of product improvement, specifications are subject to change without notice.
Printed in Japan
0590–3M (0590)