Temperature Controller
A 96 x 96 mm (DIN) Controller for
Control Valves
Controls motor valves without a potentiometer.
Optimum PID control with feed-forward control
circuitry.
High precision regardless of the set temperature.
Compatible with various inputs (input selected via
internal switch).
Models with communications capabilities also
available.
Ordering Information
Electronic Temperature Controller
Communications
None RS-232C RS-422* RS-485* BCD Transmission
output*/**
(4 to 20 mA)
E5AX-P
Communications
Board Add-on Type
Model E5AX-PRR E5AX-PRR01 E5AX-PRR02 E5AX-PRR03 E5AX-PRR20 E5AX-PRRF E5AX-PRRM
*The Controller can also be equipped with a terminal block to connect communications. Specify a terminal block by adding “-X” to the model
number. Example: E5AX-PRR02-X
**Capable of transmitting the process value or output value, but remote setting by external input is not possible.
Temperature Ranges
Input (switch
selectable)
K
Chromel vs.
alumel
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
J/L
Iron vs.
constantan
Thermocouple Temperature
T/U
Copper vs.
constantan
E
Chromel
vs.
constantan
R
Platinum vs.
platinum
13% rhodium
S
Platinum vs.
platinum 10%
rhodium
resistance
thermometer
PT platinum
resistance
thermometer
(Pt100/JPt100)
Communications Boards
Communications RS-232C RS-422 RS-485 BCD Transmission output
Model E53-X01 E53-X02 E53-X03 E53-X20 E53-XF
(4 to 20 mA)
1
E5AX-P
E5AX-P
Specifications
Ratings
Supply voltage 100 to 240 VAC, 50/60 Hz (either frequency applicable with same unit)
Operating voltage range 85% to 110% of rated supply voltage
Power consumption Approx. 10 VA (at 100 VAC) to 15 VA (at 240 VAC)
Input Thermocouple (K/J/T/E/R/S/L/U) or platinum resistance thermometer (Pt100/JPt100)
Potentiometer input 100 W to 2.5 kW
Control output Relay output: open, close; SPST-NO contacts; 3 A, 250 VAC (resistive load); inrush current: 1
Control mode PID control with auto-tuning
Alarm output Relay output, SPST-NO contacts; 3 A, 250 VAC (resistive load)
Setting method Digital setting via Up and Down Keys
Indication method Digital indications (character heights PV: 15 mm and SV: 11 mm) (Color PV: red, SV: green)
Other functions Upper and lower limits for set value
Approx. 12 VA (at 100 VAC) to 15 VA (at 240 VAC) with communication function
selectable
A max.
Key protection
Input shift
Display unit selection (%C/%F)
Normal and reverse output selection
Valve position display
Motor calibration function
Watchdog timer function (Detects failures in the CPU and restores the CPU.)
Manual output (balanceless-bumpless operation switchable)
Communications
Protocol RS-232C, RS-422, RS-485 BCD Transmission output
Transmission method Half-duplex Data select code 4 to 20 mA DC
Synchronization method Start-stop synchronization --- ---
Baud rate 150/300/600/1,200/2,400/4,800/9,600 bps
Transmission code ASCII (7-bit)
Communications Write to
Temperature
Controller
Read from
Temperature
Controller
Note: 1. The maximum total cable length must not exceed the following limits.
RS-422: 500 m; RS-232C: 15 m; RS-485: 500 m
2. A maximum of 32 Temperature Controllers can be connected to one host computer using serial communications (RS-422, RS-485).
3. Outputs the temperature data within the set limits.
Main setting, set alarm value, proportional
band, integral time, derivative time, AT
start/stop etc.
Main setting, set alarm value, proportional
band, integral time, derivative time, set
limit value, process value, valve position,
error codes, etc.
Main setting, set
alarm value
Main setting, set
alarm value,
process value, error
codes, etc.
Load: 600 W max.
Resolution: Approx. 3,200
Write disabled
Process value (see note 3),
valve position
2
E5AX-P
E5AX-P
Characteristics
Setting accuracy (+0.3% of set value or +1%C, whichever greater), +1 digit max.
Indication accuracy (+0.3% of set value or +1%C, whichever greater), +1 digit max. (Set value coincides with the
Disable band 0.1% to 10.0% (in units of 0.1%)
Proportional band 0.1% to 999.9 %C/%F (in units of 0.1%C/%F)
Integral time 1 to 3,999 s (in units of 1 s)
Derivative time 0 to 3,999 s (in units of 1 s)
Alarm output setting range Thermocouple: –999% to 9,999%C/%F (in units of 1%C/%F)
Alarm output hysteresis 0.0% to 999.9 %C/%F (in units of 0.1%C/%F)
Sampling period 500 ms (temperature sensor input)
Output refresh period 500 ms
Display refresh period 500 ms (temperature sensor input)
Valve travel indication –99% to 999% (in units of 1%)
Full Open/close time 1 to 999 s ( in units of 1 s)
Input shift Thermocouple: –999% to 9,999%C/%F (in units of 1%C/%F)
Insulation resistance 20 MW min. (at 500 VDC)
Dielectric strength 2,000 VAC 50/60 Hz for 1 min between terminals of different polarities
Vibration resistance Malfunction: 2 to 55 Hz, 2G 10 min each in X, Y, and Z directions
Shock resistance Malfunction: 200 m/s2 3 times each in 6 directions
Life expectancy Mechanical: 10,000,000 operations min.
Ambient temperature Operating: –10% to 55%C (with no icing)
Ambient humidity Operating: 35% to 85%
Memory protection Non-volatile memory
Enclosure ratings Front panel: IEC standard IP50
Weight Standard: Approx. 350 g; Communications: Approx. 480 g; Mounting bracket: Approx. 50 g
*The accuracy of U thermocouples under temperatures from –150% to 400%C (–240% 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 thermocouples under 0% to 200%C (0% to 400%F) is +3%C (+5.4%F) +1 digit.
indicated value, because no relative error exists between both values.)
Platinum resistance thermometer: –99.9% to 999.9%C/%F (in units of 0.1%C/%F)
Platinum resistance thermometer: –99.9% to 999.9%C/%F (in units of 0.1%C/%F)
Destruction: 10 to 55 Hz, 0.75-mm double amplitude 2 hrs each in X, Y, and Z directions
Destruction: 300 m/s
Electrical: 100,000 operations min.
Storage: –25% to 65%C (with no icing)
Rear case: IEC standard IP20
Terminals: IEC standard IP00
2
3 times each in 6 directions
3
E5AX-P
Nomenclature
Auto-tuning Indicator
Flashes on and off every
second when auto-tuning is taking place.
Manual Output Mode Indicator
Lights when in manual
output mode.
Open Output Indicator
Lights when the open output is ON.
Close Output Indicator
Lights when the close output is ON.
Level Key
Press for 2 seconds minimum to change levels to
set different groups of parameters.
Display Key
Press to shift the display
to the next parameter.
E5AX-P
Process Value (PV) Display
Displays the process value, the character for
parameter being displayed on the SV display
and error messages.
Set Value (SV) Display
Displays main setting and other
parameters.
Alarm Indicator
Lights when the alarm output is ON.
A/M Key (Automatic/Manual)
Press for 1 second minimum to switch
between auto output mode and manual
output mode.
Up Key
Press to increase the main setting or
other parameters. Successively increases the value when held down.
Front Cover
Down Key
Press to decrease the main setting or other
parameters. Successively decreases the
value when held down.
Operation
NOTICE: Always turn off the power supply to the Electronic Temperature Controller before changing any switch settings.
Settings
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. Four internal switches must be set on the E5AX: the
temperature sensor selector, the operating mode selector,
and the alarm mode selectors 1 and 2.
The figures show the locations of these switches and the
protection switches on the internal mechanisms. The
protection switch can be used to disable key operation.
Protection switch
(SW101, PROTECT)
Alarm mode selector
(SW205, ALM)
Operating mode selector
(SW 201, FUNCTION)
Temperature sensor selector
(SW206, INPUT)
Temperature Sensor Selector (SW206,
INPUT)
This selector selects the temperature sensor to be used. It is factory-set to position 2 to designate a K-type (chromel-alumel thermocouple) temperature sensor. The following table lists the other pos-
4
E5AX-P
E5AX-P
sible settings for temperature sensors. Refer to temperature range
charts under Ordering Information for further information.
The scale displayed (%C or %F) is selected by the operating mode
selector (SW201).
Switch
setting
0 R 0 to 1,700 0 to 3,000
1 S 0 to 1,700 0 to 3,000
2 K –200 to 1,300 –300 to 2,300
3 J –100 to 850 –100 to 1,500
4 T –200 to 400 –300 to 700
5 E 0 to 600 0 to 1,100
6 JPt100 –99.9 to 450.0 –99.9 to 800.0
7 Pt100 –99.9 to 450.0 –99.9 to 800.0
8 L –100 to 850 –100 to 1,500
9 U –200 to 400 –300 to 700
Temperature
sensor code
Temperature range
%C %F
Operating Mode Selector (SW201,
FUNCTION)
This DIP switch selects the operation modes listed in the following
table.
Function
Not used.* 1 Leave turned OFF.
Control output 2 ON Normal (cooling)
Input shift 3 ON Enabled
SP (set point)** 4 ON Enabled
protection cancel OFF Disabled
Display unit 5 ON %F
PID display 6 ON Enabled
*Always operate with pin 1 OFF. Operating with pin 1 ON could result in malfunction.
**SP protection cancel is effective only when SW101 (key protection) is on. If the SP protection cancel is ON, key protection (SW101
ON) will not apply to the set point, i.e., you will be able to change the
set point regardless of the setting of SW101.
Pin
number
Pin
setting
OFF Reverse (heating)
OFF Disabled
OFF %C
OFF Disabled
Control setting
Alarm Mode Selector (SW205: ALM)
Alarm mode selector is provided on all E5AX Temperature Controllers. Alarm modes, listed in the following table, can be selected using this
switch. The switch is factory-set to position 2, i.e., the upper-limit alarm mode.
Switch
setting Alarm operation Display When X is positive When X is negative
0 No alarm No display OFF ---
1 Upper- and lower-limit
alarm
2 Upper-limit alarm
3 Lower-limit alarm
4 Upper- and lower-limit
range alarm
5 Upper- and lower-limit
alarm with standby sequence
6 Upper-limit alarm with
standby sequence
7 Lower-limit alarm with
standby sequence
8 Absolute-value alarm
Mode (SW205) Alarm output Setting range
)––(
–––(
)–––
–()–
3––e
–––e
3–––
1––(
XX
X X
X X
XX
XX
X X
X X
Y
--- Thermocouple: 0% to
---
---
Y
9,999%C/%F
Platinum resistance thermometer:
0% to 999.9%C/%F
Thermocouple: –999% to
9,999%C/%F
Platinum resistance thermometer: –99.9% to 999.9%C/%F
Thermocouple: 0% to
9,999%C/%F
Platinum resistance thermometer:
0% to 999.9%C/%F
Thermocouple: –999% to
9,999%C/%F
Platinum resistance thermometer: –99.9% to 999.9%C/%F
0%C
0%C
5
E5AX-P
E5AX-P
Key Protection Switch (SW101, PROTECT)
When the key protection switch is set to the ON position, the Level Key, Up and Down Keys, and Auto-tuning Key cannot be operated. In effect,
the Temperature Controller is write-protected and the set values (such as the alarm value) can be read out only. The set point, however, will not
be protected if the SP protection disable is turned ON (pin 4 of SW201).
6
E5AX-P
E5AX-P
Motor Calibration: calb
The following setting are used to set the opening/closing time for controlling valves. Always set the following parameters when installing the
controller. If a display is required for valve position, set the open and close positions at the same time.
Down Keys to set the fully open/close time to a value between
PV
a
SV
sl–l
–200
Press a.
Press a.
calb
Lower setting limit
Motor calibration display
Press the UP and Down
keys simultaneously.
fr–l
Count value
Press a.
Fully open position
fr–l
Count value
Press a.
Fully close position
mot
30
Settings when Not Using a Potentiometer (No Valve Position
Display)
1. Turn on power and press the Level Key for at least two
seconds. sl–l will be displayed. Then press the Display Key
until calb is displayed.
This is the initial mode when power is turned on for the first
time.
2. Simultaneously press the Up and Down Keys for at least one
second. fr–h will be displayed and the OPEN output will turn
ON.
3. Press the Display Key. fr–l will be displayed, the OPEN output
will turn OFF, and the CLOSE output will turn ON.
4. Press the Display Key. mot will be displayed and the CLOSE
output will turn OFF. While mot is displayed, use the Up and
Fully open/close time
1 and 999 s in the units of 1 s.
5. Press the Display Key. sl–l will be displayed and motor
calibration will be complete. Press the Level Key for at least
two seconds, confirm that in–t is displayed, and then press
the Level Key again for at least two seconds to display the
process value and return to the initial display mode.
Settings with a Potentiometer (with Valve Position Display)
1. Turn on power and press the Level Key for at least two
seconds. sl–l will be displayed. Then press the Display Key
until calb is displayed.
This is the initial mode when power is turned on for the first
time.
2. Simultaneously press the Up and Down Keys for at least one
second. fr–h will be displayed, the OPEN output will turn ON,
and the valve will start to open. Press the Display Key as soon
as the valve stops by the limit switch built into the motor. The
count value for the fully open position will be set.
3. Press the Display Key. fr–l will be displayed, the OPEN output
will turn OFF, the CLOSE output will turn ON, and the valve
will start to close. Press the Display Key as soon as the valve
stops by the limit switch built into the motor. The count value
for the fully close position will be set.
4. Press the Display Key. mot will be displayed and the CLOSE
output will turn OFF. The automatically set fully open/close
time will be displayed. Use the Up and Down Keys to adjust
the setting if required (value must be between 1 and 999 s in
the units of 1 s).
5. Press the Display Key. sl–l will be displayed and motor
calibration will be complete. Press the Level Key for at least
two seconds, confirm that in–t is displayed, and then press
the Level Key again for at least two seconds to display the
process value and return to the initial display mode.
WARNING
Never calibrate the motor during control operation. Make sure
that control operations have been stopped before calibrating.
Note: 1. The output mode cannot be changed in motor calibra-
tion mode.
2. If the fully open position is less than the fully closed position, the value position will not be displayed and the display will show “a––– ” for automatic and “m––– ” for manu-
al operation. If a potentiometer is not being used for
feedback, press the Display Key at steps 2 and 3 without
regarding the position of the valve and then set the fully
open/close time. Here too, the display for value position
will show “a––– ” for automatic and “m––– ” for manual
operation.
7
E5AX-P
E5AX-P
Inputting Parameters
The Temperature Controller has three display levels, 0, 1, and 2, in which only specific parameters can be set. Level 0 is the initial and is automatically entered at power application. To change the mode to set or change a different group of parameters, hold down the Level Key for 2
seconds minimum. The display level mode changes as shown below. Actual displays vary with models and switch settings. If a display does not
appear as expected, check your switch settings.
Level 0
PV
Power ON
Process value
SV
m 0
Process value
Process value
in–5
Level 0
Valve travel, main setting, alarm set value,
input shift, PID constants
(Note 1)
Valve travel
Press a.
Main setting
0
Press a.
(Note 2)
0
0
i
40
Valve travel
(Note 3)
Alarm value
(Note 4)
Input shift
(Note 5)
Proportional band
(Note 5)
Integral time
(Note 5)
Derivative time
a 0
Press a.
al
Press a.
Press a.
p
40.0
Press a.
240
Press a.
d
Press a.
Level 1 Level 2
Press the Level Key. Press the Level Key. Press the Level Key.
–––––––
Lower/upper setting limit,
–––––––
alarm hysteresis, disable
band, motor calibration, Fully
open/close position, Fully
open/close time
Note: 1. Not displayed in automatic output mode. “m––– ” will be
2. Not displayed in manual output mode. “a––– ” will be dis-
3. Not displayed when the alarm is disabled (SW203 set to
4. Not displayed when the input shift display is disabled
5. Not displayed when PID display is disabled (SW201, pin
Main Setting
The set point can be changed with the Up and Down Keys.
Valve Travel
The value travel can be monitored. If a potentiometer is not connected, the display will show “a––– ” for automatic and “m––– ” for
manual operation. While “m ” is displayed in manual output mode,
the Up Key will turn ON the OPEN output and the Down Key will turn
ON the CLOSE output.
Selecting the Output Mode
The A/M Key can be pressed for one second or longer to change
between the automatic and manual output modes. The balanceless-bumpless function will operate to prevent the output from
changing abruptly.
Automatic Output Mode
In automatic output mode, the control will function automatically.
When the A/M Key is pressed and the automatic output mode is first
entered, displays like the following will appear (display level 0).
Manual Output Mode
In manual output mode, the controller can be operated with the Up
and Down Keys. The Up Key will turn the OPEN output ON and light
the OPEN indicator. The Down Key will turn ON the CLOSE output
and light the CLOSE indicator.
When the A/M Key is pressed and the manual output mode is first
entered, displays like the following will appear (display level 0).
Input type, alarm mode
displayed if a potentiometer is not connected.
played if a potentiometer is not connected.
0 or 9).
(SW201, pin 3 OFF).
6 OFF).
PV
SV
PV
SV
–––––––
123
80
123
Process value
Valve position (%)
m 80
Process value
Main setting
The MANU indicator will light and remain lit until the automatic output mode is returned to.
8
E5AX-P
E5AX-P
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 main setting, 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 and Down Keys while al
is displayed. The message is not displayed if the alarm mode selector is set to position 0. Factory-set to upper-limit, alarm value
0%C/%F
Input Shift: in–5
When pin 3 of the operating mode selector 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 shown by the examples in the following table:
Input shift value
0 (without shift) 100%C 100%C
10 (shifted by
10%C)
–10 (shifted by
–10%C)
This function can be used mainly for fine tuning compensation,
while leaving the set temperature unaffected. Select this function by
pressing the Display Key three times in display level 0.
Proportional Band: p
When the character p is displayed on the PV display, the proportional band (P constant) can be changed using the Up and Down
Keys. The new value will be displayed on the SV display. It can be
set in a range from 0.1% to 999.9%C/%F in units of 0.1%C/%F. The
factory setting is 40.0%C/%F.
Temperature mea-
sured by sensor
100%C 110 %C
100%C 90%C
Displayed
temperature
NOTICE: The output value will change according to the differ-
ence between the set value and the present value when
the proportional band is changed during control operation.
If this difference is too great, a drastic change will result.
Always switch to the manual output mode before changing
the proportional band.
Integral Time (Reset Time): i
When the character i is displayed on the PV display, the integral time
(I constant) can be changed using the Up and Down Keys. It can be
set in a range from 0 to 3,999 seconds in units of 1 second. The factory setting is 240 seconds.
Derivative Time (Rate Time): d
The derivative time (D constant) can be changed when the character d is displayed on the PV display using the Up and Down Keys. It
can be set in a range from 0 to 3,999 seconds in units of 1 second.
The factory setting is 40 seconds.
Level 1
PV
SV
sl–l
–200
Press a.
Lower setting limit
sl–h
1300
hysa
Press a.
0.2
Press a.
Upper setting limit
(Note 1)
Alarm hysteresis
db
Disable band
2.0
Press a.
calb
Press a.
fr–h
Count value
(Note 2)
Motor calibration display
Press b r simultaneously.
(Note 3)
Fully open position
Press a.
fr–l
Count value
Press a.
Fully closed position
mot
Fully open/close time
30
Press a.
Note: 1. Not displayed when the alarm is disabled (SW205
set to 0 or 9).
2. Motor calibration will be displayed when power is
turned on for the first time.
3. Displayed only when the motor calibration mode is
entered.
9
E5AX-P
E5AX-P
Lower/Upper Limits of Setting Range: sl–l, sl–h
–200 0
SL-L SL-H
Basically, the temperature range that can be measured is determined by the temperature sensor to be used. For example, when a
K-type (chromel-alumel thermocouple) temperature sensor is selected, the measurable range is from –200%C to 1,300%C. However, this temperature range can be narrowed, for example, to 0%C to
400%C. To 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
and Down Keys 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 within the
temperature range of the temperature sensor.
Hysteresis Alarm: hysa
The hysteresis alarm value for the alarm can be set in a range from
0.0% to 999.9%C while hysa is displayed on the PV display using the
Up and Down Keys. The factory setting is 0.2%C/%F.
Disable band: db
The disable band can be set in a range from 0.1% to 10.0% while db
is displayed on the PV display using Up and Down Keys. The factory
setting is 2.0%.
Motor Calibration: calb
Designate whether or not to perform motor calibration. To enter the
mode, simultaneously press the Up and Down Keys for at least one
second. Press the Display Key to return to sl–l.
400
1,300
WARNING
Never calibrate the motor during control operation. Make sure
that control operations have been stopped before calibrating.
fr–h Fully open position
fr–l Fully closed position
mot Opening/closing time
The motor is calibrated. Refer to page 9.
Level 2
In level 2, selected input sensor, and modes for alarm output can be
monitored. Note that level 2 is a monitoring level only and thus no
parameters can be changed. When the Level Key is pressed for 2
seconds minimum after power application, 5l–l is displayed on the
PV display. Hold down the Level Key again for 2 seconds minimum
to display o on the PV display. Then, selected input sensor, and
alarm modes can be monitored each time the Display Key is
pressed.
in–t
k ca
Input type
Input Type: in–t
When in–t is displayed on the PV display, the present setting of the
input type selector (SW206), is displayed on the SV display. The following table shows the messages that may be displayed:
Display
r pr
5 pr
k ca
j ic
t cc
e cr
jpt
pt
l ic
u cc
*Meets JIS 1981.
**Meets JIS 1989, DIN.
AL (Alarm Mode): al
When al is displayed on the PV display in level 2, alarm output mode
or the present setting of the corresponding alarm mode selector
(SW205) is displayed on the SV display. The following table shows
the messages that may be displayed.
Display
No display No alarm
)––(
–––(
)–––
–()–
3––e
–––e
3–––
1––c
R
S
K
J
T
E
JPt100*
Pt100**
L
U
Upper- and lower-limit alarm
Upper-limit alarm
Lower-limit alarm
Upper- and lower-limit range
alarm
Upper- and lower-limit alarms
with standby sequence
Upper-limit alarm with standby
sequence
Lower-limit alarm with standby
sequence
Absolute-value alarm
Sensor
Alarm mode
10
Press a.
al
–––(
Press a.
Alarm mode
E5AX-P
E5AX-P
Starting Control Operation
The E5AX will start control operations as soon as power is turned on
until power is turned off. If you don’t want control operations to be
performed while setting parameters, turn off the power and then turn
it back on after setting the desired parameters.
Auto-tuning
When the Level Key and Mode Key are pressed at the same time for
1 second minimum, the Temperature Controller automatically starts
tuning the PID constants. While auto-tuning is in operation, 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 = 40 seconds) until the temperature of the controlled system reaches the set temperature. After
that, the Temperature Controller automatically adjusts the PID constants using the limit cycle method. When the auto-tuning indicator
turns off, the auto-tuning is terminated and PID constants are renewed.
Main setting
Limit Cycle Method: the optimum PID constants are calculated by
this method by varing the control output variable and generating external oscillation.
Auto-tuning can be carried out regardless of whether the Temperature Controller is performing reverse (heating) or normal (cooling)
operation. To stop auto-tuning, hold down the Level Key and Mode
Key again simultaneously for 1 second minimum. All settings will return to those prior to the beginning of auto-tuning. Automatic tuning
can be executed at any time: at power application, while the temperature is rising, or after the control action has stabilized.
Previous PID
constants
AT indicator flashes
New PID constants
Error Messages
The Temperature Controller is provided with self-diagnostic functions, and will display an error message on the PV display when an error is
detected.
Message
ffff
––––
5.err (flashes)
e111 (flashes)
e333 (flashes)
*When the temperature resistance thermometer is used, this message is displayed when the temperature has fallen below -99.9%C.
Input temperature has exceeded the upper
limit of the temperature range by more than
20%C.
Input temperature has fallen below the lower
limit of the temperature range by more than
20%C.*
The thermocouple has burned out or
short-circuit bar has been removed. The platinum resistance thermometer has burned out
or A and B terminals have been short-circuited.
Memory failure (e111) or A/D converter failure
(e333) has occurred. Temperature Controller
must be repaired if recovery is not made by
turning power off once and on again.
Cause Control output Alarm output
Normal Reverse
Open: OFF
Close: ON
Open: ON
Close: OFF
Open: OFF
Close: ON
Open: OFF
Close: OFF
Open: ON
Close: OFF
Open: OFF
Close: ON
Open: ON
Close: OFF
Open: OFF
Close: OFF
Sends alarm signal in accordance with the set
alarm mode.
Sends alarm signal in accordance with the set
alarm mode.
Sends alarm signal in accordance with the set
alarm mode. Proportional
alarm output is OFF, however.
OFF
11
E5AX-P
Dimensions
Note: All units are in millimeters unless otherwise indicated.
_96 89
12
11
2 to 10
5
Mounting
Screw
E5AX-P
Communications connector
(RS-232C and BCD connector is shown.)
Installation
RS-422 RS-485
RDB
RDA
SG
SDA
SDB
Communications board
(RS-422 and 485 terminals are shown.)
Panel Cutout Side-by-side Mounting
of N Controllers
+0.8
92
0
+0.8
+0.8
92
92
120 min.
0
0
L = (96N – 3.5)
4 to 20 mA
transmission output
SG
Communications board
(4 to 20 mA transmission output is shown.)
L
+1
0
12
Control
output
Alarm output
Potentiometer
input
(see Note 1)
Open
Close
Ground FG terminal 18 under
noise-interfered environment.
100 to 240 VAC, 50/60 Hz
Use these terminals when connecting a platinum
resistance thermometer (remove short bar from
terminals 14 and 15).
Use these terminals when connecting a thermocouple (do not remove short bar from terminals
14 and 15).
Note: 1. Connect a valve position indicator if required.
2. Do not connect unused terminals.
E5AX-P
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 subject to heavy vibration or shock, water or oil spray, or high temperatures. Any of these condition will affect product life.
Isolate the Temperature Controller from equipment that generates
strong, high-frequency noises such as high-frequency welders, because such equipment may prevent proper operation.
Attach the two mounting brackets supplied with E5AX on the top
and bottom of the Temperature Controller. Tighten the screws of the
mounting brackets with your fingers.
Mounting bracket
E5AX-P
Stickers Inside Frontcover
Stickers indicating the temperature sensor type (R, S, K, J, T, E, L,
and U) are supplied with the Temperature Controller. Attach the
proper stickers to the front panel as shown below.
Sticker identifying input type
Connection Examples
With Solderless Terminal
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, because doing so may damage them. The terminal block of the Temperature
Controller is constructed so that the lead wires can be connected to
all the terminals from the same direction.
To p
Bottom
Input Connection
To reduce inductive noise influence, the lead wires connecting the
input to the Temperature Controller must be separated from the
power 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 housing. Use lead wires having a small resistance for temperature resistance 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 in turned ON after power has been supplied to the Temperature Controller. Therefore, take
this time delay into consideration when designing sequenced circuits which incorporate a Temperature Controller.
13
E5AX-P
E5AX-P
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. H54-E1-1A In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Temperature Control Devices Division
29th Fl., Crystal Tower Bldg.
1-2-27, Shiromi, Chuo-ku,
Osaka 540 Japan
Phone: 06-949-6070 Fax: 06-949-6084
14
Printed in Japan
0791-1M
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