Yokogawa UT35A-L Operating Manual

Operation	UT35A-L
Guide	Digital Indicating Controller (Limit Control Type)
	Operation Guide
IM 05P04D41-11EN	Installation and Wiring
	1st Edition : Jul. 2011

This operation guide describes installation, wiring, and other tasks required to make the controller ready for operation.

Contents

1.Safety Precautions

2.Model and Suffix Codes

3.How to Install

4.Hardware Specifications

5.How to Connect Wires

6.Terminal Wiring Diagrams

Introduction

Thank you for purchasing the UT35A-L Digital Indicating Controller.

This operation guide describes the basic operations of the UT35A-L. The guide should be provided to the end user of this product.

Be sure to read this operation guide before using the product in order to ensure correct operation.

For details of each function, refer to the electronic manual. Before using the product, refer to the table of Model and Suffix Codes to make sure that the delivered product is consistent with the model and suffix codes you ordered. Also make sure that the following items are included in the package.

• Digital Indicating Controller (the model you ordered)..............................	x1
• Set of Brackets........................................................................................	x1
• Unit Label (L4502VZ)...............................................................................	x1
• Tag Label (L4502VE)...............................................................................	x1
(Only when ordered.)
• Operation Guide (this document).............................................................	x5 (A3 size)

(Installation and Wiring, Initial Settings, Operations, and Parameters)

•Target Readers

This guide is intended for the following personnel;

•Engineers responsible for installation, wiring, and maintenance of the equipment.

•Personnel responsible for normal daily operation of the equipment.

1.Safety Precautions

The following symbol is used on the instrument. It indicates the possibility of injury to the user or damage to the instrument, and signifies that the user must refer to the user’s manual for special instructions. The same symbol is used in the user’s manual on pages that the user needs to refer to, together with the term “WARNING” or “CAUTION.”

Calls attention to actions or conditions that could cause serious or fatal injury to the user, and indicates precautions that should be

WARNING taken to prevent such occurrences.

Calls attention to actions or conditions that could cause injury to the user or damage to the instrument or property and indicates pre-

cautions that should be taken to prevent such occurrences.

CAUTION

AC

AC/DC

The equipment wholly protected by double insulation or reinforced insulation.

Functional grounding terminals

(Do not use this terminal as a protective grounding terminal).

Note

Identifies important information required to operate the instrument.

n Warning and Disclaimer

(1)YOKOGAWA makes no warranties regarding the product except those stated in the WARRANTY that is provided separately.

(2)The product is provided on an "as is" basis. YOKOGAWA assumes no liability to any person or entity for any loss or damage, direct or indirect, arising from the use of the product or from any unpredictable defect of the product.

n Safety, Protection, and Modification of the Product

(1)In order to protect the system controlled by this product and the product itself, and to ensure safe operation, observe the safety precautions described in the user’s manual. Use of the instrument in a manner not prescribed herein may compromise the product's functions and the protection features inherent in the device. We assume no liability for safety, or responsibility for the product's quality, performance or functionality should users fail to observe these instructions when operating the product.

(2)Installation of protection and/or safety circuits with respect to a lightning protector; protective equipment for the system controlled by the product and the product itself; foolproof or fail-safe design of a process or line using the system controlled by the product or the product itself; and/or the design and installation of other protective and safety circuits are to be appropriately implemented as the customer deems necessary.

(3)Be sure to use the spare parts approved by YOKOGAWA when replacing parts or consumables.

(4)This product is not designed or manufactured to be used in critical applications that directly affect or threaten human lives. Such applications include nuclear power equipment, devices using radioactivity, railway facilities, aviation equipment, air navigation facilities, aviation facilities, and medical equipment. If so used, it is the user’s responsibility to include in the system additional equipment and devices that ensure personnel safety.

(5)Modification of the product is strictly prohibited.

(6)This product is intended to be handled by skilled/trained personnel for electric devices.

(7)This product is UL Recognized Component. In order to comply with UL standards, end-products are necessary to be designed by those who have knowledge of the requirements.

	• Power Supply
	Ensure that the instrument’s supply voltage matches the voltage
WARNING	of the power supply before turning ON the power.
	• Do Not Use in an Explosive Atmosphere
	Do not operate the instrument in locations with combustible
	or explosive gases or steam. Operation in such environments
	constitutes an extreme safety hazard. Use of the instrument in
	environments with high concentrations of corrosive gas (H2S,
	SOX, etc.) for extended periods of time may cause a failure.
	• Do Not Remove Internal Unit
	The internal unit should not be removed by anyone other than
	YOKOGAWA's service personnel. There are dangerous high
	voltage parts inside. Additionally, do not replace the fuse by
	yourself.
	• Damage to the Protective Construction
	Operation of the instrument in a manner not specified in the
	user’s manual may damage its protective construction.
	This instrument is an EMC class A product. In a domestic environ-
	ment this product may cause radio interference in which case the
CAUTION	user needs to take adequate measures.

n Accessories (sold separately)

The following is an accessory sold separately.

• LL50A Parameter Setting Software

Model	Suffix code	Description
LL50A	-00	Parameter Setting Software

•Terminal Cover Model: UTAP001

•User’s Manual (A4 size)

Note: User’s Manual can be downloaded from a website.

•User’s Manual (CD-ROM), Model: UTAP003

Note: Contains all manuals.

•Brackets

Part number: L4502TP (2 pcs for upper and lower sides)

2.Model and Suffix Codes

n UT35A-L

									[Style: S6]
								Optional
Model			Suffix code					suffix	Description
								code
UT35A									Digital Indicating Controller
									(provided with retransmission output, 2 DIs, and 3
									DOs) (Power supply: 100-240 V AC)
Type 1:	-L
Basic									Limit control type
control
Type 2:		0							Always "0"
Functions
Type 3: Open				0					None
				1					RS-485 communication (Max.38.4 kbps, 2-wire/4-wire)
networks
				2					Ethernet communication (with serial gateway function)
Display language					-1				English
Case color						0			White (Light gray)
						1			Black (Light charcoal gray)
Fixed code							-00		Always "-00"
Optional suffix codes								/DC	Power supply 24 V AC/DC

n Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC

This is an explanation of how to dispose of this product based on Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC. This directive is only valid in the EU.

Marking

This product complies with the WEEE Directive (2002/96/

EC) marking requirement. This marking indicates that you must not discard this electrical/electronic product in domestic household waste.

Indicates a manufacturing date in the black color part.

Product Category

With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a “Monitoring and Control instrumentation” product. Do not dispose in domestic household waste. When disposing products in the EU, contact your local Yokogawa Europe B.V. office.

3.How to Install

n Installation Location

The instrument should be installed in indoor locations meeting the following conditions:

•Instrumented panel

This instrument is designed to be mounted in an instrumented panel. Mount the instrument in a location where its terminals will not inadvertently be touched.

•Well ventilated locations

Mount the instrument in well ventilated locations to prevent the instrument’s internal temperature from rising.

However, make sure that the terminal portions are not exposed to wind. Exposure to wind may cause the temperature sensor accuracy to deteriorate. To mount multiple indicating controllers, see the external dimensions/panel cutout dimensions which follow. If mounting other instruments adjacent to the instrument, comply with these panel cutout dimensions to provide sufficient clearance between the instruments.

•Locations with little mechanical vibration

Install the instrument in a location subject to little mechanical vibration.

•Horizontal location

Mount the instrument horizontally and ensure that it is level, with no inclination to the right or left.

Front panel	Keep this angle
of controller	within 30°
30°	Rear of
	controller
	Note

If the instrument is moved from a location with low temperature and low humidity to a place with high temperature and high humidity, or if the temperature changes rapidly, condensation will result. Moreover, in the case of thermocouple inputs, measurement errors will result. To avoid such a situation, leave the instrument in the new environment under ambient conditions for more than 1 hour prior to using it.

Do not mount the instrument in the following locations:

•Outdoors

•Locations subject to direct sunlight or close to a heater

Install the instrument in a location with stable temperatures that remain close to an average temperature of 23°C. Do not mount it in locations subject to direct sunlight or close to a heater. Doing so adversely affects the instrument.

•Locations with substantial amounts of oily fumes, steam, moisture, dust, or corrosive gases

The presence of oily fumes, steam, moisture, dust, or corrosive gases adversely affects the instrument. Do not mount the instrument in locations subject to any of these substances.

•Areas near electromagnetic field generating sources

Do not place magnets or tools that generate magnetism near the instrument. If the instrument is used in locations close to a strong electromagnetic field generating source, the magnetic field may cause measurement errors.

•Locations where the display is difficult to see

The instrument uses an LCD for the display unit, and this can be difficult to see from extremely oblique angles. Mount the instrument in a location where it can be seen as much as possible from the front.

•Areas close to flammable articles

	Absolutely do not place the instrument directly on flam-
	mable surfaces. If such a circumstance is unavoidable	150 mm
	and the instrument must be placed close to a flammable
	item, provide a shield for it made of 1.43 mm thick plated	150 mm	150 mm
	steel or 1.6 mm thick unplated steel with a space of at
			150 mm
	least 150 mm between it and the instrument on the top,
	bottom, and sides.
	• Areas subject to being splashed with water

Be sure to turn OFF the power supply to the controller before installing it on the panel to avoid an electric shock.

WARNING

YOKOGAWA ELECTRIC CORPORATION Network Solutions Business Division

2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 JAPAN YOKOGAWA CORPORATION OF AMERICA

Head office and for product sales

2 Dart Road, Newnan, Georgia 30265, USA YOKOGAWA EUROPE B.V.

Headquarters

Euroweg 2, 3825 HD Amersfoort, THE NETHERLANDS

www.yokogawa.com/ns

All Rights Reserved, Copyright © 2011 Yokogawa Electric Corporation

IM 05P04D41-11EN page 1/10

n Mounting the Instrument Main Unit

Provide an instrumented panel steel sheet of 1 to 10 mm thickness.

After opening the mounting hole on the panel, follow the procedures below to install the controller:

1)Insert the controller into the opening from the front of the panel so that the terminal board on the rear is at the far side.

2)Set the brackets in place on the top and bottom of the controller as shown in the figure below, then tighten the screws of the brackets. Take care not to overtighten them.

Direction to insert the

controller

Insert the controller into the opening at the front of the panel.

Panel	Bracket
	(top mounting hardware)
	Terminal board
	Insert a screwdriver into the
	brackets to tighten the screws.

	Appropriate
Bracket	tightening torque:
(bottom mounting hardware)	0.25 N•m

•Tighten the screws with appropriate tightening torque within 0.25 N•m. Otherwise it may cause the case deformation or the bracket

damage.

CAUTION • Make sure that foreign materials do not enter the inside of the instrument through the case’s slit holes.

n External Dimensions and Panel Cutout Dimensions

UT35A-L	11		Unit: mm (approx. inch)
96 (3.78)	(0.43)	65 (2.56)	Bracket			Terminal cover
			20	(0.79)
96 (3.78)				91.6 (3.61)	94.6 (3.72)	105.2 (4.14)
			Bracket

• General mounting

117 (4.61) min.

(53) (2.09)

92+00.8

(3.62+0.030 )

92+0.80 (25)

(3.62+0.030 ) (0.98)

1 to 10 mm (0.04 to 0.39 inch) (panel thickness)

• Side-by-side close mounting

[(N-1)×96+92]+0.80 ([(N-1)×3.78+3.62] +0.030 )

92+0.80

(3.62+0.030 )

145 (5.71) min. “N” stands for the number of controllers to be

installed.

However, the measured value applies if N≥5.

Normal tolerance:

±(value of JIS B 0401-1998 tolerance class IT18)/2

4.Hardware Specifications

This instrument is for Measurement Category I (CAT.I). Do not use it for measurements in locations falling under Measurement Catego-

WARNING ries II, III, and IV.

		Internal Wiring		II
	Entrance IV	III	T
		I
	Cable	Outlet
Category	Measurement	Description		Remarks
	category

	I	CAT.I	For measurements performed on circuits not	-
			directly connected to MAINS.
	II	CAT.II	For measurements performed on circuits di-	Appliances, portable equip-
			rectly connected to the low-voltage installation.	ment, etc.
	III	CAT.III	For measurements performed in the building	Distribution board, circuit
			installation.	breaker, etc.
	IV	CAT.IV	For measurements performed at the source of	Overhead wire, cable
			the low-voltage installation.	systems, etc.

n Input Specifications

●Universal Input (Equipped as standard)

•Number of inputs: 1

•Input type, instrument range, and measurement accuracy: See the table below,

	Input Type			Instrument Range		Accuracy
			ºC		ºF
			-270.0 to 1370.0ºC		-450.0 to 2500.0ºF	±0.1% of instrument range ±1 digit for
		K	-270.0 to	1000.0ºC	-450.0 to 2300.0ºF	0°C or more
						±0.2% of instrument range ±1 digit for
			-200.0 to	500.0ºC	-200.0 to 1000.0ºF
						less than 0°C
		J	-200.0 to 1200.0ºC		-300.0 to 2300.0ºF	±2% of instrument range ±1 digit for
			-270.0 to 400.0ºC		-450.0 to 750.0ºF	less than -200.0°C of thermocouple K
		T				±1% of instrument range ±1 digit for
			0.0 to 400.0ºC		-200.0 to 750.0ºF
						less than -200.0°C of thermocouple T
						±0.15% of instrument range ±1 digit
		B	0.0 to 1800.0ºC		32 to 3300ºF	for 400°C or more
						±5% of instrument range ±1 digit for
						less than 400°C
		S	0.0 to 1700.0ºC		32 to 3100ºF	±0.15% of instrument range ±1 digit
		R	0.0 to 1700.0ºC		32 to 3100ºF
						±0.1% of instrument range ±1 digit
	Thermo-	N	-200.0 to 1300.0ºC		-300.0 to 2400.0ºF	±0.25% of instrument range ±1 digit
	couple					for less than 0°C

E-270.0 to 1000.0ºC -450.0 to 1800.0ºF ±0.1% of instrument range ±1 digit for

	L	-200.0 to 900.0ºC	-300.0 to 1600.0ºF	0°C or more
				±0.2% of instrument range ±1 digit for
		-200.0 to 400.0ºC	-300.0 to 750.0ºF
				less than 0°C
	U	0.0 to 400.0ºC	-200.0 to 1000.0ºF	±1.5% of instrument range ±1 digit for
				less than -200.0°C of thermocouple E.
	W	0.0 to 2300.0ºC	32 to 4200ºF	±0.2% of instrument range ±1 digit
				(Note 2)
	Platinel 2	0.0 to 1390.0ºC	32.0 to 2500.0ºF	±0.1% of instrument range ±1 digit
				±0.5% of instrument range ±1 digit for
	PR20-40	0.0 to 1900.0ºC	32 to 3400ºF	800°C or more
				Accuracy is not guaranteed for less
				than 800°C.
	W97Re3-	0.0 to 2000.0ºC	32 to 3600ºF	±0.2% of instrument range ±1 digit
	W75Re25
		-200.0 to 500.0ºC	-300.0 to 1000.0ºF	±0.1% of instrument range ±1 digit
	JPt100			(Note 1)
RTD		-150.00 to 150.00ºC	-200.0 to 300.0ºF	±0.1% of instrument range ±1 digit
		-200.0 to 850.0ºC	-300.0 to 1560.0ºF	±0.1% of instrument range ±1 digit
	Pt100	-200.0 to 500.0ºC	-300.0 to 1000.0ºF	(Note 1)
		-150.00 to 150.00ºC	-200.0 to 300.0ºF	±0.1% of instrument range ±1 digit
		0.400 to 2.000 V
Standard signal		1.000 to 5.000 V
		4.00 to 20.00 mA
		0.000 to 2.000 V		±0.1% of instrument range ±1 digit
		0.00 to 10.00 V
DC voltage/current		0.00 to 20.00 mA
		-10.00 to 20.00 mV
		0.0 to 100.0 mV

The accuracy is that in the standard operating conditions: 23±2°C, 55±10%RH, and power frequency at 50/60 Hz.

Note 1: ±0.3°C ±1 digit in the range between 0 and 100°C, ±0.5°C ±1 digit in the range between -100 and 200°C.

Note 2: W: W-5% Re/W-26% Re(Hoskins Mfg.Co.). ASTM E988

•Input sampling (control) period: 200 ms

•Burnout detection:

Functions at TC, RTD, and standard signal. Upscale, downscale, and off can be specified.

For standard signal, burnout is determined to have occurred if it is 0.1 V or 0.4 mA or less.

•Input bias current: 0.05 µA (for TC or RTD)

•Measured current (RTD): About 0.16 mA

•Input resistance:

TC or mV input: 1 MΩ or more V input: About 1 MΩ

mA input: About 250 Ω

•Allowable signal source resistance: TC or mV input: 250 Ω or less

Effects of signal source resistance: 0.1 µV/Ω or less DC voltage input: 2 kΩ or less

Effects of signal source resistance: About 0.01%/100 Ω

•Allowable wiring resistance:

RTD input: Max. 150 Ω/wire (The conductor resistance between the three wires shall be equal.)

Wiring resistance effect: ±0.1ºC/10 Ω

• Allowable input voltage/current:

TC, mV, mA and RTD input: ±10 V DC V input: ±20 V DC

mA input: ±40 mA

• Noise rejection ratio:

Normal mode: 40 dB or more (at 50/60 Hz) Common mode: 120 dB or more (at 50/60 Hz)

For 100-240 V AC, the power frequency can be set manually. Automatic detection is also available.

For 24 V AC/DC, the power frequency can be set manually.

•Reference junction compensation error: ±1.0ºC (15 to 35ºC)

±1.5ºC (-10 to 15ºC and 35 to 50ºC)

•Applicable standards: JIS/IEC/DIN (ITS-90) for TC and RTD

n Step Response Time Specifications

Within 1 s (63% of analog output response time when a step change of 10 to 90% of input span is applied)

n Relay Contact Output Specifications

• Contact type and number of outputs:

Limit control output: contact point 1c; 1 point

Alarm output: contact point 1a; 3 points (common is independent)

• Contact rating:

Contact point 1c (limit control output): 250 V AC, 3 A or 30 V DC, 3A (resistance load) Contact point 1a (alarm output): 240 V AC, 1A or 30 V DC, 1 A (resistance load)

•Use: Alarm output, FAIL output, etc.

•Time resolution of limit control output: 10 ms or 0.1% of output, whichever is larger

Note: This cannot be used for a small load of 10 mA or less.

n Retransmission Output Specifications

•Number of outputs: Retransmission output; 1

•Current output: 4 to 20 mA DC or 0 to 20 mA DC/ load resistance of 600 Ω or less

•Current output accuracy: ±0.1% of span (±5% of span for 1 mA or less)

The accuracy is that in the standard operating conditions: 23±2°C, 55±10%RH, and power frequency at 50/60 Hz.

n Contact Input Specifications

•Number of inputs: 2 points

•Input type: No-voltage contact input or transistor contact input

•Input contact rating: 12 V DC, 10 mA or more

Use a contact with a minimum on-current of 1 mA or more.

• ON/OFF detection: No-voltage contact input:

Contact resistance of 1 kΩ or less is determined as “ON” and contact resistance of 50 kΩ or more as “OFF.”

Transistor contact input:

Input voltage of 2 V or less is determined as “ON” and leakage current must not exceed 100 µA when “OFF.”

•Minimum status detection hold time: Control period +50 ms

•Use: Confirmation operation, etc.

■ Safety and EMC Standards

•Safety: Compliant with IEC/EN61010-1 (CE), approved by CAN/CSA C22.2 No.61010-1 (CSA), approved by UL61010-1. Certified for FM-3810 and FM-3545.

Installation category: CAT. II Pollution degree: 2 Measurement category: I (CAT. I)

Rated measurement input voltage: Max. 10 V DC

Rated transient overvoltage: 1500 V (Note)

Note: This is a reference safety standard value for Measurement Category I of IEC/EN/CSA/ UL61010-1. This value is not necessarily a guarantee of instrument performance.

•EMC Conformity standards: CE marking

EN61326-1 Class A, Table 2 (For use in industrial locations) EN61326-2-3

EN 55011 Class A, Group1 EN 61000-3-2 Class A EN 61000-3-3

C-tick mark

EN 55011 Class A, Group1

The instrument continues to operate at a measurement accuracy of within ±20% of the range during testing.

■ Construction, Installation, and Wiring

•Degree of protection provided by Enclosure: IP66 (for front panel) (Not available for side-by-side close mounting.)

•Material: Polycarbonate (Flame retardancy: UL94V-0)

•Case color: White (Light gray) or Black (Light charcoal gray)

•Weight: 0.5 kg or less

•External dimensions (mm): 96 (W) × 96 (H) × 65 (depth from the panel face) (Depth except the projection on the rear panel)

•Installation: Direct panel mounting; mounting bracket, one each for upper and lower mounting

•Panel cutout dimensions (mm): 92+0.8/0 (W) × 92+0.8/0 (H)

•Mounting attitude: Up to 30 degrees above the horizontal. No downward titling allowed.

•Wiring: M3 screw terminal with square washer (for signal wiring and power wiring)

■ Power Supply Specifications and Isolation

• Power supply:

Rated voltage: 100-240 V AC (+10%/-15%), 50/60 Hz 24 V AC/DC (+10%/-15%) (for /DC option)

•Power consumption: 18 VA (DC:9 VA, AC: 14 VA if /DC option is specified)

•Data backup: Nonvolatile memory

•Power holdup time: 20 ms (for 100 V AC drive)

•Withstanding voltage

Between primary terminals and secondary terminals: 2300 V AC for 1 minute Between primary terminals: 1500 V AC for 1 minute

Between secondary terminals: 500 V AC for 1 minute

(Primary terminals: Power* and relay output terminals; Secondary terminals: Analog I/O signal terminals, contact input terminals, communication terminals and functional grounding terminals.)

*: Power terminals for 24V AC/DC models are the secondary terminals.

•Insulation resistance: Between power supply terminals and a grounding terminal 20 MΩ or more at 500 V DC

•Isolation specifications

	PV (universal) input terminals
	Retransmission (analog) output terminals
	Control relay (contact point c) output terminals
	Alarm-1 relay (contact point a) output terminals	Internal	Power
	Alarm-2 relay (contact point a) output terminals
		circuits	supply
	Alarm-3 relay (contact point a) output terminals
	Contact input terminals
	RS-485 communication terminals
	Ethernet communication terminal

The circuits divided by lines are insulated mutually.

■ Environmental Conditions

Normal Operating Conditions:

•Ambient temperature: -10 to 50ºC (-10 to 40ºC for side-by-side close mounting)

•Ambient humidity: 20 to 90% RH (no condensation allowed)

•Magnetic field: 400 A/m or less

•Continuous vibration at 5 to 9 Hz: Half amplitude of 1.5 mm or less, 1oct/min for 90 minutes each in the three axis directions

Continuous vibration at 9 to 150 Hz: 4.9 m/s2 or less, 1oct/min for 90 minutes each in the three axis directions

•Short-period vibration: 14.7 m/s2, 15 seconds or less

•Shock: 98 m/s2 or less, 11 ms

•Altitude: 2000 m or less above sea level

•Warm-up time: 30 minutes or more after the power is turned on

•Startup time: Within 10 seconds

*: The LCD (a liquid crystal display) is used for a display portion of this product. The LCD has a characteristic that the display action becomes late at the low temperature. However, the control function is not affected.

Transportation and Storage Conditions:

•Temperature: -25 to 70ºC

•Temperature change rate: 20ºC/h or less

•Humidity: 5 to 95% RH (no condensation allowed)

Effects of Operating Conditions

• Effect of ambient temperature:

Voltage or TC input: ±1 µV/ºC or ±0.01% of F.S./ºC, whichever is larger Current input: ±0.01% of F.S./ºC

RTD input: ±0.05ºC/ºC (ambient temperature) or less Analog output: ±0.02% of F.S./ºC or less

•Effect of power supply voltage fluctuation Analog input: ±0.05% of F.S. or less Analog output: ±0.05% of F.S. or less (Each within rated voltage range)

IM 05P04D41-11EN page 2/10

5.How to Connect Wires

•Wiring work must be carried out by a person with basic electrical knowledge and practical experience.

WARNING • Be sure to turn OFF the power supply to the controller before wiring to avoid an electric shock. Use a tester or similar device

to ensure that no power is being supplied to a cable to be connected.

•As a safety measure, always install a circuit breaker (an IEC 60947-compatible product, 5 A, 100 V or 220 V AC) in an easily accessible location near the instrument. Moreover, provide indication that the switch is a device for turning off the power to the instrument.

•Install the power cable keeping a distance of more than 1 cm from other signal wires.

•The power cable is required to meet the IEC standards concerned or the requirements of the area in which the instrument is being installed.

•Wiring should be installed to conform to NEC (National Electrical Code: ANSI/NFPA-70) or the wiring construction standards in countries or regions where wiring will be installed.

•For control relay output, alarm relay output, and power terminal connections, use heat-resistant cables.

•Since the insulation provided to each relay output terminal is Functional insulation, provide Reinforced insulation to the external of the device as necessary. (Refer to the drawing below.)

This product

Asafety

voltage circuit

Functional

insulation

Asafety

voltage circuit

This product
	Asafety	Asafety
	voltage circuit	voltage circuit
Functional	Reinforced insulation
insulation
	Ahazardous	Ahazardous
	voltage circuit	voltage circuit
	Reinforced insulation

This product
	Ahazardous	Ahazardous
	voltage circuit	voltage circuit
Functional	Reinforced insulation
insulation
	Ahazardous	Ahazardous
	voltage circuit	voltage circuit
	Reinforced insulation

•When connecting two or more crimp-on terminal lugs to the single terminal block, bend the crimp-on terminal lugs before

tightening the screw.

CAUTION • Note that the wiring of two or more crimp-on terminal lugs to the single high-voltage terminal of the power supply and relay, etc. does not comply with the safety standard.

•Provide electricity from a single-phase power supply. If the power is noisy, install an isolation transformer on the primary

side, and use a line filter on the secondary side. When measures CAUTION against noise are taken, do not install the primary and secondary

power cables close to each other.

•If there is a risk of external lightning surges, use a lightning arrester etc.

•For TC input, use shielded compensating lead wires for wiring. For RTD input, use shielded wires that have low conductor resistance and cause no significant differences in resistance between the three wires.

•Since the limit control output relay has a life span (resistance load of 100,000 times), use the auxiliary relay to perform ON/OFF control.

•The use of inductance (L) loads such as auxiliary relays, motors and solenoid valves causes malfunction or relay failure; always insert a CR filter for use with alternating current or a diode for use with direct current, as a spark-removal surge suppression circuit, into the line in parallel with the load.

•After completing the wiring, the terminal cover is recommended to use for the instrument.

● Recommended Crimp-on Terminal Lugs

	(ød)
(A)	5.5	3.3
	(F)

Recommended tightening torque: 0.6 N·m

Applicable wire size: Power supply wiring 1.25 mm2 or more

Applicable terminal lug	Applicable wire size mm2 (AWG#)	(φ d)	(A)	(F)
M3	0.25 to 1.65 (22 to 16)	3.3	5.5	4.2

● Cable Specifications and Recommended Cables

Purpose	Name and Manufacturer
Power supply, relay contact outputs	600 V Grade heat-resistant PVC insulated wires, JIS C
	3317(HIV), 0.9 to 2.0 mm2
Thermocouple	Shielded compensating lead wires, JIS C 1610
RTD	Shielded wires (three/four conductors), UL2482 (Hitachi Cable)
Other signals (other than contact input/output)	Shielded wires
Other signals (contact input/output)	Unshielded wires
RS-485 communication	Shielded wires
Ethernet communication	100 BASE-TX (CAT-5)/10 BASE-T

DC Relay Wiring

UT35A-L

	Relay	External DC power supply
			R
			Diode
UT’s contact		Relay	(Mount it directly
			to the relay coil

	(Use one with a relay coil rating	terminal (socket).)
	less than the UT’s contact rating.)

AC Relay Wiring

UT35A-L	External AC power supply
		R
UT’s contact	Relay	CR filter
(Use one with a relay coil		(Mount it directly
rating less than the UT’s		to the relay coil
	contact rating.)	terminal (socket).)

6.Terminal Wiring Diagrams

•Do not use an unassigned terminal as the relay terminal.

Do not use a 100-240 V AC power supply for the 24 V AC/DC

model; otherwise, the instrument will malfunction.

CAUTION

■ UT35A-L

Limit control output

OUT

PV input

PV as(Equippedstandard)

Retransmission output

RET (Equipped as standard)

Relay contact output

(Equipped as standard)

Factory default: PV input

TC input

RTD input

Retransmission output

type is undefined.

101

A 201

Default: PV

NC

+ 202

retransmission

+

207

NO

102

b

202

4-20 mADC or

103

-

203

B 203

0-20 mADC

-

208

COM

Loadresistance600Ωorless

Default: 4-20 mADC

Contact rating: 250 V AC, 3 A

Current (mA) input

Voltage (mV, V) input

30 V DC, 3 A (resistance load)

Contact input

DI (Equipped as standard)

-

203

+ 202

External contact input

+ 204

-

203

No-voltage

UT

Transistor

UT

+5V

contact

contact

DI2

Factory default: No function

210 DI2

210

+5V

Contact output

ALM

(Equipped

101

501

401

301

201

RESET when DI=ON

211 DI1

211 DI1

as standard)

(However, setup parameter CNF=DI)

COM

External contact output (relay)

-112

-512

-412

-306

-212

212 COM

212

Common

101

401

201

Alarm-3 output

104

UT

Contact rating: 12 V DC, 10 mA or more

(PV high limit)

AL3

102

202

Function can be assigned to the terminals with no function.

Common

105

103

203

Alarm-2 output

106

104

204

Ethernet communication (with gateway function)

( PV low limit)

AL2

107

Wiring direction

Common

105

205

Do not use.

ETHR

Alarm-1 output

106

206

10BASE-T/100BASE-TX

108

RJ45 connector

(Suffix code: Type 3=2)

(PV high limit)

AL1

109

107

407

207

Common

108

408

208

Upper side LED (baud rate)

Relay contact rating: 240 V AC, 1 A

109

409

Color

Amber

30 V DC, 1 A (resistance load)

Lit

100M bps

110

410

210

RS-485

Unlit

10M bps

111

411

211

Lower side LED (link activity)

RSB(+) 407

Color

Green

112

412

212

Power supply

Lit

Linked

RSA(-) 408

Blink

Active

409

100-240VACpowersupply

24 VAC/DC power supply

Unlit

Link failure

SG

N

110

N

-

110

401-412

E3-terminal area

L

111

L

+

111

RS-485communication

RS485

112

112

RS-485

(Suffix code: Type 3=1)

Allowable range:

(24 V AC/DC power supply: Optional suffix code /DC)

SDB(+) 407

100-240 V AC

SDA(-) 408

(+10%, -15%)

(free voltage)

50/60 Hz shared

SG

409

RDB(+) 410

RDA(-)

411

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