Fuji Electric PXR3 Series User manual

Model : PXR3
DIGITAL THERMOSTAT
(Replacement for PAS3)
Instruction Manual
INP-TN2PXR361-E
Thank you for your purchasing “Fuji DIGITAL THERMOSTAT.” Please check that the product is exactly the one
you ordered and use it according to the following instructions. (Please refer to a separate operation manual for
details.) Dealers are cordially requested to ensure the delivery of this Instruction Manual to hands of the
end-users.
NOTICE
The contents of this document may be changed in the future without prior notice.
We paid the utmost care for the accuracy of the contents. However, we are not liable for direct and indirect
damages resulting from incorrect descriptions, omission of information, and use of information in this document.
Global Sales Section
Instrumentation & Sensors Planning Dept.
1, Fuji-machi, Hino-city, Tokyo 191-8502, Japan
http://www.fujielectric.com
Phone: [phone] Fax: [phone]
http://www.fujielectric.com/products/instruments/
Model Code for Digital Thermostat PXR3 (Replacement for PAS3)
Specication Model code
Input signal Input range Alarm points
Thermocouple (K) 0 to 1200 °C 1 point PXR3TAY2-0V061
2 points PXR3TAY2-1V061
Thermistor 0 to 100 °C 1 point PXR3HAY2-0V061
2 points PXR3HAY2-1V061
Specication
Power voltage: 100 V (-15%) to 240 V (+10%) AC, 50/60 Hz
Power consumption: 6VA or less (100V AC), 8VA or less (220V AC)
Alarm output (Max. 2 points): Relay contact (SPST contact)
220V AC / 30V DC 2A (resistive load)
Operating ambient temperature: -10 to 50°C, 90%RH or less (no condensation)
Preservation temperature: -20 to 60°C
Thermistor sensor: Allowable deviation/±2°C or less, constant value B/3390K±1%,
resistance/6kΩ (0°C)
Conformity: UL, CE marking
Unpacking
Before using the controller, check if the type and specications are as ordered.
Check that all of the following accessories are included in the package box.
● Digital thermostat main unit ……… 1
● Instruction manual ………………… 1
● Mounting adapter ………………… 1
● Watertight packing ………………… 1
● Thermister sensor (only for the type that the input signal is thermistor)
N ote: The provided thermistor sensor is the sensor dedicated to this equipment.
Related Ducuments
For more information, refer to the following documents:
Contents Title No.
Operation method DIGITAL THERMOSTAT OPERATION MANUAL TN5A2886-E
Details of alarm functions PXR3 Supplementary Manual on Alarm Function TN5A3203-E
Safety Precautions
Read before use
Before using this product, the user is requested to read the following precautions carefully to
ensure the safety. Safety precautions must be taken by every user to prevent accidents.
The safety requirements are classied into "warning" and "caution" according to the following
interpretations:
Warning Suggesting that the user's mishandling can
result in personal death or serious injury.
Caution
Suggesting that the user's mishandling can
result in personal injury or damage to the
property.
WARNING Over-temperature Protection
“Any control system design should take into account that any part of the system has the potential to fail”.
“The most dangerous condition of the system equipped with this product is continued heating, and the
machine should be designed to automatically stop heating even if alarm is not issued at the time of failure of
this product or due to any other reason”.
The following are the most common cases where continued heating cannot be detected with this product.
1) Failure to issuing an alarm even when this product fails
2) Disengagement of the temperature sensor from the system
3) A short circuit in the thermocouple wiring
In any application where physical injury or destruction of equipment might occur, we recommend the
installation of independent safety equipment, with a separate temperature sensor, to disable the heating
circuit in case of overheating.
Digital thermostat alarm signal is not designed to function as a protective measure in case of product failure.
1. Warning
1-1. Installation and wiring
● This product designed to be installed at the conditions shown in the below table.
Operating temperature -10 to 50°C
Operating humidity 90%RH or less (Non condensation)
Installation category II Conforming to EN61010-1
Pollution degree 2
Recommended fuse 250 V AC, 0.1 A, Time-delay fuse (100–240 V AC)
Operating environment Indoor
● Be sure to provide a basic insulation (For example, use a transformer that has a basic insulation or higher
degree of insulation). The basic insulation requires a clearance at least 1.5 mm and a creepage of at least 3.0
mm. If such insulation is not provided, EN61010 safety compliance may become invalid.
About safety standard
Please observe the following instructions to meet the requirements of safety standard. Failure to observe
these instructions violates safety standards. (This product is not safety equipment.)
● Install a recommended fuse, which is specied in the instruction manual, between the external main power
(mains circuit) and this equipment.
● Do not connect a Safety Extra Low Voltage (SELV) circuit directly to the input terminals. If you connect a
SELV circuit to any of the input terminals, ensure to provide a basic insulation between them. For example,
use a transformer that has a basic insulation or higher degree of insulation. The basic insulation requires a
clearance at least 1.5 mm and a creepage of at least 3.0 mm.
● Be sure to install an appropriate external protective circuit to prevent excessive temperature rise etc.
● When performing wiring work, be sure to turn the power off and to wear protection gloves or safety glasses,
to prevent an electric shock.
● Set an appropriate parameter for the type of the input to be connected.
● Do not use this equipment for the measurement of circuits which fall under measurement categories II, III,
or IV.
● Do not use this equipment for measurement of signals to which a voltage over 30 Vrms or over 60 Vdc is
applied.
● Attach the terminal cover to prevent an electric shock. Before removing a terminal cover, turn off all the
power.
● If the voltage exceeds 50 V DC, add a basic insulation between all the terminals and the ground terminal.
● If there is a danger of a serious accident resulting from a failure or a defect in this unit, provide the unit with an
appropriate external protective circuit to prevent an accident.
● The unit is supplied without a power switch and fuses. Add a power switch and/or fuse if needed. Make wiring
so that the fuse is placed between the main power supply switch and this product. (Main power supply: 2 pole
breaker, fuse rating: 250V, 1A)
● A power switch or a circuit breaker should be installed within the power supply facility.
● A power switch or a circuit breaker should be properly installed within easy reach of an operator.
● A power switch or a circuit breaker should be identied as the one for this product.
● Electrical wiring must be made by the qualied personnel only and in accordance with your local and national
standards.
● When wiring the power supply terminal, use vinyl insulated 600 volt cable or equivalent.
● To avoid the damage and failure of this product, supply the power voltage tting to the rating.
● To avoid an electric shock and this product failure, do not turn ON the power before all wiring is completed.
● Be sure to check that the distance is kept to avoid electric shock or ring before turning the power ON.
● Keep away from terminals while the circuit is energized in order to avoid an electric shock and a malfunction.
● Never attempt to disassemble, fabricate, modify, or repair this unit because tampering with the unit may result
in a malfunction, electric shock, or a re.
● A relay has a limited life. When an output relay contact comes to the end of its life, it might remain opened or
closed. Use a protective circuit outside this product for safety.
● Read this instruction manual thoroughly before use.
1-2. Maintenance precautions
● Be sure to turn off the power before this product is installed or removed in order to avoid an electric shock,
malfunction, and fault.
● Regular maintenance is recommended for a longer service life of this controller. Some parts of this controller
have a limited life span, or they will be deteriorated with the lapse of time.
● This product including accessories has one-year warranty if it is properly used.
2. Caution
2-1. Cautions on installation
Avoid the following places for installation.
● a place where the ambient temperature may reach beyond the range from -10 to 50°C while in operation.
● a place where a change in the ambient temperature is so rapid as to cause condensation.
● a place where corrosive gases (sulde gas and ammonia gas, in particular) or combustible gases are emitted.
● a place where the unit is subject directly to vibration or shock. (vibration or shock may cause malfunction of the
output relay.)
● a place exposed to water oil, chemicals,steam and vapor.
(if immersed with water, take the inspection by sales ofce to avoid an electrical leakage and ring )
● a place where the unit is exposed to dust, salt air, or air containing iron particles.
● a place where the unit is subject to intereference with static electricity, magnetism, and noise.
● a place where the unit is exposed to direct sunlight.
● a place where the heat may be accumulated due to the radiation of heat.
● a place where the ambient humidity may reach beyond 90% RH while in operation.
About EMC standard
● This equipment is designed as a class A equipment that is for industrial locations. Do not use this
equipment in domestic establishment such as residential areas, or it may cause radio interference. If you
unavoidably use this equipment in domestic locations, take adequate measures on the outside of the
equipment to reduce radio interference.
● Under the requirement of EMC standard, the maximum length of external cable including a sensor to be
connected to this equipment is 30 m.
2-2. Cautions on installation on panel
● Insert the mounting adapter (accessory) from the rear side until the main unit is securely t into the panel.
If there should be a play, tighten two screws lightly until the play is eliminated. (Do not tighten the screws
excessively because the mounting adapter can be removed from the stopper by the force.)
● The front panel meets NEMA 4X (equivalent to IP66) requirements. To ensure the waterproofness between
the instrument and the panel, use packings that are provided as accessories in the following manner: (The
improper tting of packings will ruin the waterproofness.)
① As shown in Figure 1, t a packing to the case of the unit and then insert the PXR3 in the panel.
②  As shown in Figure 2, tighten the screws of the mounting adapter so that no gaps are given between the
front panel of the thermostat, packing, and the panel.
Check that there are no deviation and deformation of packing as shown in Fig.3.
● If panel strength is weak, it may generate a gap between the packing and the panel, thus impairing water
resistance.
Unit
Packing
Unit
Figure 1 Figure 2
Front Case Panel Panel Mounting
adapter
Screw
Figure 3
Standard : Vertical mounting, flush on
the panel. (This product is horizontal.)
When mounting this product on
tilted surface, the maximum tilt
angle is 30° (degree) from vertical.
Installation
Packing Packing
Case
Case
(Bad) (Good)
α = 0 ~ 30°
Caution ● Don’t block the openings around this product, or radiation effect will be reduced.
● Don’t block the ventilation openings at the top of the terminal block.

2-3. Precautions in wiring connection
● For the thermocouple sensor type, use thermocouple compensation wires for wiring.
● Keep input lines away from power line and load line to avoid the inuence from noise induced.
● For the input and output signal lines, be sure to use shielded wires and keep them away from each other.
● If a noise level is excessive in the power supply, the additional installation of an insulating transformer and
the use of a noise lter are recommended.
Make sure that the noise lter is installed to a place such as a panel that is properly grounded. The wiring
between the noise filter output terminal and the instrument power supply terminal should be made as
short as possible. None of fuses or switches should be installed to the wiring on the noise lter output side
because the lter effect will be degraded by such a installation.
● A better anti-noise effect can be expected by using stranded power supply cable for the instrument. (The
shorter the stranding pitch is, the better the anti-noise effect can be expected.)
● A setup time is required for the alarm output when the power is turned on. If the alarm output is used as a
signal for an external interlock circuit, use a delay relay at the same time.
● Use the auxiliary relay since the life is shortened if full capacity load is connected to the alarm output relay.
● If inductive load such as magnetic switches connected as a alarm output load, it is recommended to use
surge absorber to protect a contact from switching surge and keep a longer life.
Recommended specication of surge absorber
Voltage Varistor voltage rating
100V 240V
200V 470V
Where to install: Between contacts of the alarm output.
2-4. Requirement for key operation/operation in abnormalities
● The indication of “UUUU” or “LLLL” appears if the input disconnection occurs. Turn off the power before
replacing sensor.
● When you change the alarm setpoint or other parameter values, wait for at least ve seconds before turning
off the power.
● After setting the alarm, be sure to carry out a test operation to check if the alarm is properly set and works
properly.
2-5. Others
● Do not use organic solvents such as alcohol and benzine to wipe this controller. Use a neutral detergent for
wiping this product.
● Do not bring any mobile phone close to the main unit (50 cm). Malfunction will occur.
● Noise may be produced if this equipment is brought close to a radio. Use this equipment as fully spaced
apart from radios.
Operation Procedure
<Reference items>
<Description> <Remarks>
Error Codes9
Power on
Wiring
2
Display and Keys
3
Operation
4
Display Mode Switching
5
Alarm Code and Range Code
6
List of Parameters
7
Operation
Installation
1
Confirming type specification
• Confirming that the delivered product
is equal to the ordered one.
• Outline dimensions
• Panel cutout dimensions
• Mounting method on the panel
• To start the operation, wait for about 15
minutes after the power-on for warm up.
• Read “Safety Precautions”
• Limited Warranty
• Read “Safety Precautions”
• Terminal connection diagram
• Display when abnormal
Alarm Functions
8
• Basic operation method
• Set value change method
• List of input/alarm codes
• Names and functions of parameters
1. Installation
Outline and Panel Cutout Dimensions
● Outline dimensions (Unit : mm) ● Panel cutout dimensions (Unit : mm)
Mounting adapter
Panel thickness (1 ≤ t ≤ 8)
98
97
4
34.2
22
Watertight packing
1
48
24
PV
SET1
SET2
AL1
AL2
SEL
°C
57 MIN.
45.0+0.5
0
22.2 +0.3
0
50 MIN.
a=(48×n-3) +0.5
0
22.2 +0.3
0
For separate mounting (Unit: mm)
For mounting close together
Note: Watertight feature is
unavailable if mounted
close together.
Number
of units
a
2
93
3
141
4
189
5
237
6
285
2. Wiring
Terminal Connection Diagram
(100 to 240 V AC) Wiring Material
Note 1) Check the power supply voltage before installation.
Note 2) Tighten the terminal screw securely with fastening
torque of 0.4N·m.
9
Power supply
8
AC100-240V
Measured value input
Alarm output 2
6 7
ALM2
Alarm output 1
4 5
ALM1
Thermistor Thermocouple
1 12 3 32
−
+
16 1715 181110 141312
876 921 543
● Wire
Gauge: AWG28 (0.1mm2) to AWG16 (1.25mm2)
Strip-off length: 5 to 6 mm
● Rod terminal
Dimension of exposed conductor section: 2×1.5 mm or smaller
Length of exposed conductor section: 5 to 6 mm
Recommended terminals:
Manufacturer: NICHIFU CO., LTD.
Model: TMEV TC-0.3-9.5
TMEV TC-1.25-11s
TGN TH-0.75N
Manufacturer:
DAIDO SOLDERLESS
TERMINAL MFG.CO., LTD.
Model: AVA-1.25L
BVA-1.25L
* If the exposed conductive part is longer than above requirements, cut
the excess.
Note: To prevent disconnection or short circuit, never use the wire other
than the one stated above, and make sure to insert it toward the
back of the terminal block. Fastening torque: 0.4N·m
AWG28 to
AWG16
5 to 6 mm
5 to 6 mm
1.5
MAX.
2MAX.
3. Display and Keys (Read before use)
Name of Functional Parts and Functions
PV
SET1
SET2
AL1
AL2
SEL
°C
⑩
⑦⑥
④
①
②
③
⑤
⑨
⑧
Display/Indication
No. Name Function
①Process value (PV) indicator Lights in green when PV is displayed.
②Alarm 1 set value (SET1)
indicator
Lights in green when the alarm 1 set value is displayed.
③Alarm 2 set value (SET2)
indicator
Lights in green when the alarm 2 set value is displayed.
④Alarm 1 (AL1) indicator ● Lights in green when the alarm 1 occurs.
● Blinks during on-delay.
⑤Alarm 2 (AL2) indicator ● Lights in green when the alarm 2 occurs.
● Blinks during on-delay.
⑥Unit indicator Shows the temperature unit.
⑦7-seg 4 digit LED
● PV
● SET1
● SET2
● Parameter name
● Parameter set value
● In operation mode (level 1): displays PV, SET1, or SET2
● In parameter setting modes (level 2, 3, or 4): displays a parameter name or a
parameter value
● Upon error: shows an error code. (See “9. Error codes”.)
*PV and alarm set values can be set in increments of 1°C.
Setting keys
No. Name Function
⑧Select key Used for switching of display between process value and alarm set value, level move, switching to
parameter setting mode and for data registration.
⑨Up key · Used for parameter shifting (returning) or data changing (increasing).
· The numerical value is increased by pressing the key once. The numerical value keeps on increasing by
pressing the key continuously.
⑩Down key · Used for parameter shifting (to next) or data changing (decreasing).
· The numerical value is decreased by pressing the key once. The numerical value keeps on decreasing by
pressing the key continuously.
4. Operation
Parameter setting mode (level 2, level 3, level 4)
Note When a period of 3 seconds
has elapsed since the
parameter set value was
changed, the data is
registered even if the key
is not pressed.
1) Select a parameter you want to set
by pressing the or key.
2) Press the key to display the
parameter set value.
3) Press the or key, to change
the parameter set value.
4) To save the change, press the
key or just wait for 3 seconds.
The value will stop blinking, and
the display changes back to the
parameter name display.
<Parameter setting procedure>
Parameter name display
1)
2)
3)
3)
4)
Set value display
The increase/decrease speed
changes when the or key
is kept pressed.
1) To move to the operation mode
display, press the key for 3
seconds in the parameter name
display.
<Method for move of level 1>
SEL
SEL
Blink
Blink
SEL
SEL
SEL
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
Surge absorber
18
9
15 171612 13 14
6 7 83 4 5
10 11
1 2
Example)

5. Display Mode Switching
Press for about
3 seconds.
SEL
SEL
Press for about
7 seconds.
SEL
Operation mode (level 1)
Level 2 parameter block
Press for about
9 seconds.
SEL
Level 3 parameter block Level 4 parameter block
Process value (PV) display
SEL
Press
once
Alarm 1 set value (SET1) display Alarm 2 set value (SET2) display
SEL
Press
once
SEL
Press
once
Press for about 3
seconds. Then, returns
to the process value
(PV) indication.
SEL
Press for about 3
seconds. Then, returns
to the process value
(PV) indication.
SEL
Press for about 3
seconds. Then, returns
to the process value
(PV) indication.
Notes ● To move among the displays, use SEL key. The duration to press the SEL key defines the destination display.
● To change the alarm setpoint, access the parameters ST1 or ST2 in the level 2 parameter block.
● The display changes back to process value display of the operation mode when 30 seconds have passed after the last key operation.
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
PV
SET1
SET2
AL1
AL2
SEL
°C
6. Alarm Codes and Range Codes
Alarm
type Set value Action diagram
Code of
PA1 and 2
0No
alarm
1
2
3
Upper
limit
Lower
limit
Upper
limit
Lower
limit
Upper
limit
Lower
limit
Upper
limit
Lower
limit
Absolute
value
Absolute
value
Absolute
value
Absolute
value
Absolute
value
Absolute
value
Absolute
value
Absolute
value
Without
Without
With
With
Without
Without
With
With
Hold function Relay operation
at alarm
4
5
6
7
8
Relay
energization
Relay
energization
Relay
energization
Relay
energization
Relay
de-energization
Relay
de-energization
Relay
de-energization
Relay
de-energization
Note: Be sure to power-cycle PXR3 after you change the alarm type.
If your PXR3 has two alarms but you want
to use only one alarm, set the other alarm
to “0”.
How to read activation diagram
area: Range in which the AL1 or the AL2 indicator lights.
area: Range in which the alarm relay is energized
point: Alarm set value
The horizontal represents PV.
Code
of Pn2 Range (°C) Indication
accuracy
Thermo-
couple J20 to 800 ±0.5% FS
±1digit±1°C
±0.5% FS
±1digit±1°C
±0.5% FS
±1digit±1°C
±0.5% FS
±1digit±1°C
±0.5% FS
±1digit±1°C
K 3 0 to 1200
R40 to 1600
T 6 0 to 400
E70 to 600
Thermistor PB-36 8 0 to 100 ±4°C
Input signal
Notes
1) Correct display is not made in the range of 0 -
500°C of R thermostat.
2) It is not permitted to make switching between
thermistor input and thermocouple input. (It is fixed
depending on what was specified at the time of
purchase.)
3) If the input signal was changed, the measuring
range should be changed to a value that
corresponds to the input signal. (Set PSL at 0 and
set PSU at the upper limit value of the measuring
range.)
4) The accuracy of indication of the thermocouple does
not include the reference junction compensation
accuracy (±1°C).
5) The accuracy of indication of thermistor input does
not include the accuracy of the sensor.
[Table 1] Alarm action type code
Parameters: PA1, PA2
[Table 2] Input range codes
Parameters: Pn2, PSL, PSU
7. List of parameters
100%
0%
Note 8
0
Note 9
1
2
1
1
Note 2
Note 2
0
0
H
0
0
5.0
0
0
0
Note 1, 2
Note 1, 2
Note 1, 2
Note 1
Table 2
Alarm 1 set value setup
Set the alarm 1 activation value. It may be set within the input range.
Parameter indication Level
Level 4
Level 2
Level 3
Parameter name
Function Default
setting
Remarks
Input type
Range lower limit setup
Selection of input type
Setup of lower limit of the input range (set range: -1999 to 9999)
Setup of upper limit of the input range (set range: -1999 to 9999)
Burn-out direction
Set the swinging direction at the time of burn-out.
(set range: upper limit = H, lower limit = L)
Power ON delay time
Setup of power ON delay time
power ON delay: Delay time until output inhibition is canceled after power
ON (set range: 0-120 seconds)
Alarm type 1
Select the type of alarm activation. (set range: 0-8)
Alarm type 2
Setup lock
Select whether parameter setup change is permitted or not.
LoC = 0: Setup change is permitted for all parameters.
LoC = 1: No setup change is permitted for all parameters.
LoC = 2: Alarm set value 1 (ST1) and alarm set value 2 (ST2) only may be set.
Range upper limit setup
Alarm 1 hysteresis width
Set the ON/OFF hysteresis width of the alarm output.
(set range: 0-110%FS of the input range)
Alarm 2 hysteresis width
Alarm 1 ON delay time
Set ON delay of the alarm output. (set range: 0-120 seconds)
Alarm 2 ON delay time
User SPAN adjustment Shift the input SPAN side. (set range: -50-50%FS of the input range)
Input filter time constant
Set the time constant. (set range: 0.0-90.0 seconds)
Setting is available in 0.5 seconds increments. Setting to “0.0” turns off the filter.
PV offset Shift the display of the process value (PV).
(set range: -10-10%FS of the input range)
ST1
ST2
Pn2
PSL
brn
oPd
PA1
PA2
LoC
PSU
HY1
HY2
Pd1
Pd2
AJS
PdF
POF
AJO
User ZERO adjustment Shift the input ZERO side. (set range: -50-50%FS of the input range)
Alarm 2 set value setup Set the alarm 2 activation value. It may be set within the input range.
Note 1
Table 2
Table 1
Table 1
Notes 1) If the unit of setup of a parameter is engineering value or deviated engineering value, the value of such a parameter changes accompanying
change to PSL and PSU. (Indicated by .)
* Values of input range 100% = PSU, input range 0% = PSL
2) FS (full scale) means the value of PSU - PSL. (Example: 50% FS = (1200 – 0) × , when PSL = 0 and PSU = 1200)
3) Parameters indicated with do not appear on the versions that have only one alarm.
4) The accuracy of alarm delay time and of power ON delay time is less than 1 second.
5) A difference of 1°C may arise between the indication and the alarm output depending on the range setup.
(Example: If the alarm set value is 200°C, an alarm occurs when the indication is 200°C in some cases, but an alarm occurs when the
indication is 201°C in other cases.)
6) There are cases where over-range (UUUU) or under-range (LLLL) display is not made, if a large value is set as a PV offset, user zero or
user span. Be careful.
7) Parameters indicated by are not displayed on the thermistor input version.
8) Input type code: thermocouple: 3, thermistor: 8
9) The range upper limit: thermocouple: 1200, thermistor: 100
50
100
8. Alarm functions
1) Kinds of alarm
Absolute value upper limit alarm or absolute lower limit alarm is available. (For details, see Table 1 Alarm
action type codes.)
ON delay setting time
ON
OFF
ON
OFF
ON
OFF
ON delay function Energization/de-energization function
ON
Alarm
judgement
OFF
ON
OFF
ON
OFF
Without
De-energization
function
With
De-energization
function
Normal
alarm relay
Alarm
With ON delay
function
2) Function of alarm
Allows you to set the hysteresis (dead band) for alarm.
Allows you to set the delay time after which the alarm action starts when the
alarm condition is satisfied.
Allows you to select either to energize or to de-energize the relay output upon
alarm. (See Table 1 Alarm action type code.)
Power ON
delay function
No. Function name Function Parameters to set
①Hysteresis
function
Alarm1 :
Alarm2 :
Alarm1 :
Alarm2 :
②Alarm ON
delay function
④Allows you to set the delay time during which the alarm is not activated after the
power is turned on.
Energization/
de-energization
function
③Alarm1 :
Alarm2 :
Note: We offer the “Supplementary Manual on Alarm Function”. Contact us if you need it.
PV (Process value)
Power ON
Lower
limit alarm
Lower
limit alarm
with hold
Power ONPower OFF
Output band of lower
limit alarm
off off off
on on
off off
on
What is alarm with hold?
The alarm is not turned ON immediately even when the mesaured value is in the alarm band.
It turns ON when it goes out the alarm band and enters again.
1. When PXR3 is turned off, no output is emitted even if the
de-energization function is turned on.
2. The alarm hold function is in effect even if the process value
is in the hysteresis area when the power is turned on.
3. If the PV goes into the alarm-off area during the alarm hold
function is in effect, the alarm hold is cancelled immediately.
Note that if the PV goes into the alarm-on area again after
the hold function is cancelled, the alarm on-delay function
comes into effect.
4. The alarm on-delay function is also effective when an alarm
occurs due to burnout.
Notes:
Point
9. Error Codes
Error indications
If any of the following error code appears, immediately remove the cause of the error, and then power cycle
PXR3.
Error code Possible cause Alarm output
① Thermocouple burnt out.
② PV value exceeds the range upper
limit by 5% FS.
<Case of upper limit alarm setup>
① When burn-out direction (brn) is set at lower limit (L) .... OFF
② When burn-out direction (brn) is set at upper limit (H) ..... ON
<Case of lower limit alarm setup>
① When burn-out direction (brn) is set at lower limit (L) ...... ON
② When burn-out direction (brn) is set at upper limit (H) ... OFF
① PV value is below the range lower
limit by 5%FS.
② Thermistor sensor burnt out.
Incorrect range setting (PSL/PSU) OFF
Device failure Unxed
*Stop using the device immediately, and contact us.
10. Limited warranty
1. Scope of warranty
If malfunction occurs in the period of warranty due to Fuji Electric, the malfunctioning parts are exchanged or
repaired for free. However, in the case where an engineer needs to visit your place for replacement or repair,
you will be charged our call out fee. Please note that upon repair or replacement of failed parts we cannot
provide commissioning and/or readjustment for the whole system that includes our product.
The warranty does not apply to the following cases:
● The malfunction occurs due to inappropriate conditions, environment, handling or usage that is not instructed
in a catalog, instruction manual or user's manual
● Factors that do not originate in the purchased or delivered product
● The malfunction is caused by other devices or software design that does not originate in Fuji Electric
products
● The malfunction occurs due to an alteration or repair that is not performed by Fuji Electric
● Inappropriate maintenance or replacement of expendable parts listed in the instruction book or the catalog
● Factors that were not foreseeable by the practical application of science and technology at the time of
purchase or delivery
● The malfunction occurs because the product is used for an unintended purpose
● The malfunction occurs due to a disaster or natural disaster that Fuji Electric is not responsible for
2. Exclusion of liability for loss of opportunity
Regardless of the time period of the occurrence, the amount of compensation assumed by Fuji Electric
for damage, excluding which is caused by intentional acts or acts of gross negligence or illegal act by Fuji
Electric, shall not exceed the amount stipulated in the contract with the customer. Fuji Electric is not liable for
the damage to products that were not manufactured by Fuji Electric, incidental damages or consequential
damages, or damage caused due to special situations regardless of whether it was foreseeable or not, or
passive damages such as opportunity loss or lost prots of the purchaser.

3. Scope of application
This equipment must be used under the following conditions:
‒ the use of the equipment incurs no risk of a serious accident even if a failure or malfunction occurs on
the equipment, and
‒ in case of product failure or malfunction, safety measures such as redundant design, prevention of
malfunction, fail safe setting, foolproof mechanism are provided outside of the equipment by the user.
The product described in this document is designed and manufactured as a general-purpose product for
general industrial applications.
The warranty does not apply to the following cases:
‒ for the use not described in or beyond the conditions or environment specied in the instruction manual
or the user manual,
‒ for the use which has large inuence on publicity including nuclear power and other power generation,
gas, and/or water,
‒ for the use in which safety is especially required, because it may seriously affect railroads, vehicles,
combustion equipment, medical equipment, entertainment devices, safety equipment, defense
equipment, and/or human lives and property.
However, we will study the possibility of application of the equipment for the above use, if the user limits the
usage of it and agrees to require no special quality. Please consult us.