Fuji Electric PXR3 Instruction Manual

Instruction Manual
DIGITAL THERMOSTAT
(Replacement for PAS3)
Model : PXR3
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.
Model Code for Digital Thermostat PXR3 (Replacement for PAS3)
Specification
Input signal Input range
Thermocouple (K) 0 to 1200 °C
Thermistor 0 to 100 °C
Specification
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 specifications 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
Operation method DIGITAL THERMOSTAT OPERATION MANUAL
Details of alarm functions PXR3 Supplementary Manual on Alarm Function
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 classified into "warning" and "caution" according to the following
interpretations:
Suggesting that the user's mishandling can
Warning
result in personal death or serious injury.
Suggesting that the user's mishandling can
Caution
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.
Global Sales Section
Instrumentation & Sensors Planning Dept.
1, Fuji-machi, Hino-city, Tokyo 191-8502, Japan
http://www.fujielectric.com
Phone: +81-42-514-8930 Fax: +81-42-583-8275
http://www.fujielectric.com/products/instruments/
Model code
Alarm points
1 point PXR3TAY2-0V061
2 points PXR3TAY2-1V061
1 point PXR3HAY2-0V061
2 points PXR3HAY2-1V061
Title No.
TN5A2886-E
TN5A3203-E
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 specified 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 identified as the one for this product.
● Electrical wiring must be made by the qualified 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 fitting 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 firing 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 fire.
● 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 (sulfide 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 office to avoid an electrical leakage and firing )
● 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.
● 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 fit 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 fitting of packings will ruin the waterproofness.)
① As shown in Figure 1, fit a packing to the case of the unit and then insert the PXR3 in the panel.
② ‌ ‌ A s 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.
Installation
Figure 1 Figure 2
Packing
Unit Unit
Front Case Panel Panel
Mounting
adapter
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.
About EMC standard
Standard : Vertical mounting, flush on
the panel. (This product is horizontal.)
When mounting this product on
Figure 3
tilted surface, the maximum tilt
angle is 30° (degree) from vertical.
Packing
Packing
Case
Case
Screw
(Bad) (Good)