Omron, NT Series

• Device monitoring and I/O comment loading functions facilitate system construction.

• Greatly enhanced NT Support Software with reusable screen data and powerful simulation on editing screens.

• Transfer the system program and screen data to ensure smooth on-site system maintenance and improve the efficiency of onsite work.

• Wide Range of Communications Interfaces.

last update: April 01, 2015

NT631C

General Specifications

Model	NT631C-ST153(B)-EV3
Rated power supply voltage	24 VDC
Allowable power supply voltage range	20.4 to 26.4 VDC (24 VDC -15%/+10%)
Power consumption	18 W max.
Ambient operating temperature	0 to 50 °C
Storage temperature	-20 to 60 °C
Ambient operating humidity	35% to 85% (with no condensation)
Ambient operating environment	No corrosive gases
Noise immunity	Conforms to IEC 61000-4-4 at 2 kV (power supply line).
Vibration resistance (during operation)	5 to 9 Hz, single amplightude: 3.5 mm 9 to 150 Hz, 9.8 m/s² 10 times (1 octave/min) each in X, Y, and Z directions
Shock resistance (during operation)	147 m/s², 3 times each in X, Y, and Z directions
Weight	2.5 kg max.
Degree of protection (front panel)	Equivalent to IP65 oil-proof type and NEMA4 *

* The equipment cannot be used for long periods of time in locations which expose the panel to spills of oil.

Display/Panel Specifications

Model			NT631C-ST153(B)-EV3
Display	Display device		Color TFT LCD
	Number of dots (resolution)		640 dots (horizontal) × 480 dots (vertical)
	Effective display area		211 × 158 mm (10.4 inches)
	Display color		8 colors (intermediate colors can be displayed in tiling patterns)
	Service life		50,000 hours (until contrast is reduced by 50%)
	Automatic turn-OFF		1 to 255 minutes/None
Backlight	Service life (when brightness is set to high)		50,000 hours min. *
LED	POWER	Green	Light while power is being supplied.
	RUN	Green	Light during operation
		Orange	Light when the battery voltage is low (when operating)
		Red	Light when the battery voltage is low (when stopped)

* The time until brightness is reduced by half, under normal temperature and normal humidity.

Operation Specifications

Model		NT631C-ST153(B)-EV3
Touch panel	Number of switches	768 (32 × 24)
	Input	Pressure sensitive
	Operating force	1 N max.
	Service life	1,000,000 operations min.

External I/F Specifications

Model		NT631C-ST153(B)-EV3
Serial communications	Serial port A	Conforms to EIA RS-232C. D-sub 9-pin connector (female) +5 V (250 mA max.) output at pin No. 6
Serial communications	Serial port B	EIA RS-232C, (RS-422A/485 selectable by memory switch setting) RS-232C: D-sub 9-pin connector (female) RS-422A/485: Terminal block (6 terminals)
Parallel I/F		Conforms to Centronics specifications, 20-pin half-pitch connector
Expansion I/F		Dedicated connector

Display Specifications

Model		NT631C-ST153(B)-EV3
Display elements	Character displays (fixed display)	65,535 per screen (including marks)
	Graphic displays	65,535 per screen (including marks)
	Character string displays	Up to 256 per screen (40 bytes (40 characters) per string)
	Numerical displays	256 per screen, max. 10-digit display (2 words)
	Bar graph displays	Up to 50 per screen, percentage display and sign display are possible.
	Analogue meter	Up to 50 per screen, percentage display and sign display are possible.
	Trend graphs	One frame per screen, 50 graphs per frame (only 8 graphs per frame with data logging)
	Broken line graphs	One frame per screen, 256 graphs per frame, 512 points per graph
	Lamps	Up to 256 per screen
	Image library displays	Up to 256 per screen
	Touch switches	Up to 256 per screen, Max. overlap: 256 mesh
	Numeral inputs	Up to 256 per screen
	Thumbwheel switches	Up to 256 per screen
	Character string inputs	Up to 256 per screen
	Alarm lists	Up to 4 groups per screen
	Alarm histories	Up to 4 groups per screen
Screen types	Normal screen	The normal screen display
	Overlapping screens	A maximum of 8 registered screens can be displayed overlapped with each other.
	Window screens	Up to 3 screens (2 local windows and 1 global window) can be displayed at the same time.
	Display history screens	Order of occurrence (max. 1,024 screens), order of frequency (max. 255 times)
Screen attributes		Buzzer, display history, background color, backlight, keyboard screen number
Number of screens	Max. number of registered screens	3,999 screens
Number of screens	Screen No.	0: No display 1 to 3999: User-registered screens 9000: "Initializing system" screen 9001: Display history (occurrence order) screen 9002: Display history (frequency order) screen 9020: Programming Console function screen 9999: Return to the previous screen 9021 to 9023: Device monitor
Screen registration method		By transmitting screen data created using the Support Tool to the NT631C By transmitting screen data stored in a memory unit to the NT631C
Screen saving method		Flash memory (screen data memory in the PT)

Display Element Specifications

Model	NT631C-ST153(B)-EV3
Display characters	Half-size characters (8 × 8 dots): Alphanumerics and symbols Normal-size characters (8 × 16 dots): Alphanumerics and symbols Mark data (16 × 16 dots): User defined picture characters
Enlargement function	Normal size, double width, double height, and magnifications of 4X, 9X, 16X, 64X
Smoothing processing	Available for enlarged characters with magnification of 4X or greater (excluding marks)
Character display attribute	Normal, reverse, flashing, reverse and flashing, transparent
Image data	Variable-size pictograph Size: Min. 8 × 8 dots, Max. 640 × 480 dots The size can be set in 8-dot units. It is not possible to set enlarged display, smoothing processing, or display attributes such as reverse/flashing.
Library data	Combination of any characters and graphics Size: Min. 1 × 1 dots, Max. 640 × 480 dots Any size can be set. Enlarged display, smoothing processing, and display attributes such as reverse/flashing are displayed according to the setting registered.
Graphics	Polyline, circle, arc, fan, square, polygon
Line type	Solid line, dotted line, alternate long and short dash, long and two short dashes (only polylines for other than solid lines)
Tilling	10 types
Graphic display attribute	Normal, flashing, reverse, reverse flashing
Display colors	8 colors (black / blue / red / purple / green / light blue / yellow / white)

Data Capacities

Model	NT631C-ST153(B)-EV3
Screen data capacity	1 MB
Numeric memory table	2 words x up to 2,000 (1,000 tables can be backed up with battery)
Character string memory table	40 normal-size characters x up to 2,000 (Data can be written to and read from 500 tables)
Bit memory table	1 bit × 1,000
Mark data	224 (16-by-16-dot basis)
Image data	4,095 items
Library data	12,288 items

NT31/NT31C

General Specifications

Model	NT31-ST123(B)-EV3/NT31C-ST143(B)-EV3
Rated power supply voltage	24 VDC
Allowable power supply voltage range	20.4 to 26.4 VDC (24 VDC -15%/+10%)
Power consumption	15 W max.
Ambient operating temperature	0 to 50 °C
Storage temperature	-20 to 60 °C
Ambient operating humidity	35% to 85% (with no condensation)
Ambient operating environment	No corrosive gases
Noise immunity	Conforms to IEC 61000-4-4 at 2 kV (power supply line).
Vibration resistance (during operation)	5 to 9 Hz, single amplightude: 3.5 mm 9 to 150 Hz, 9.8 m/s² 10 times (1 octave/min) each in X, Y, and Z directions
Shock resistance (during operation)	147 m/s², 3 times each in X, Y, and Z directions
Weight	1 kg max.
Degree of protection (front panel)	Equivalent to IP65 oil-proof type and NEMA4 (See note)

Note: The equipment cannot be used for long periods of time in locations which expose the panel to spills of oil.

Display/Panel Specifications

Model			NT31-ST123(B)-EV3	NT31C-ST143(B)-EV3
Display	Display device		Monochrome STN LCD	Color STN LCD
	Number of dots (resolution)		320 dots (horizontal) × 240 dots (vertical)
	Effective display area		118.2 × 89.4 mm (5.7 inches)
	Display color		Black/White (2 colors)	8 colors (intermediate colors can be displayed in tiling patterns)
	Service life		50,000 hours (until contrast is reduced by 50%)
	Automatic turn-OFF		1 to 255 minutes/None
	Contrast adjustment		100 levels of adjustment possible using the front touch panel
Backlight	Service life (when brightness is set to high)		50,000 hours min. (See note.)
Backlight	Brightness adjustment		3 levels of adjustment possible using the front touch panel
LED	POWER	Green	Light while power is being supplied
	RUN	Green	Light during operation
		Orange	Light when the battery voltage is low (when operating)
		Red	Light when the battery voltage is low (when stopped)

Note: The time until brightness is reduced by half, under normal temperature and normal humidity.

Operation Specifications

Model		NT31-ST123(B)-EV3/NT31C-ST143(B)-EV3
Touch panel	Number of switches	192 (16 × 12)
	Input	Pressure sensitive
	Operating force	1 N max.
	Service life	1,000,000 operations min.

External I/F Specifications

Model		NT31-ST123(B)-EV3/NT31C-ST143(B)-EV3
Serial communications	Serial port A	Conforms to EIA RS-232C D-sub 9-pin connector (female) +5 V (250 mA max.) output at pin No. 6
Serial communications	Serial port B	EIA RS-232C (RS-422A/485 selectable by memory switch setting) D-sub 25-pin connector (female)
Parallel I/F		Conforms to Centronics specifications, 20-pin half-pitch connector
Expansion I/F		Dedicated connector

Display Specifications

Model		NT31-ST123(B)-EV3/NT31C-ST143(B)-EV3
Display elements	Character displays (fixed display)	65,535 per screen (including marks)
	Graphic displays	65,535 per screen (including marks)
	Character string displays	Up to 256 per screen (40 bytes (40 characters) per string)
	Numerical displays	256 per screen, max. 10-digit display (2 words)
	Bar graph displays	Up to 50 per screen, percentage display and sign display are possible.
	Analogue meter	Up to 50 per screen, percentage display and sign display are possible.
	Trend graphs	One frame per screen, 50 graphs per frame (only 8 graphs per frame with data logging)
	Broken line graphs	One frame per screen, 256 graphs per frame, 320 points per graph
	Lamps	Up to 256 per screen
	Image library displays	Up to 256 per screen
	Touch switches	Up to 256 per screen, Max. overlap: 256 mesh
	Numeral inputs	Up to 256 per screen
	Thumbwheel switches	Up to 256 per screen
	Character string inputs	Up to 256 per screen
	Alarm lists	Up to 4 groups per screen
	Alarm histories	Up to 4 groups per screen
Screen types	Normal screen	The normal screen display
	Overlapping screens	A maximum of 8 registered screens can be displayed overlapped with each other.
	Window screens	Up to 3 screens (2 local windows and 1 global window) can be displayed at the same time.
	Display history screens	Order of occurrence (max. 1,024 screens), order of frequency (max. 255 times)
Screen attributes		Buzzer, display history, background color, backlight, keyboard screen number
Number of screens	Max. number of registered screens	3,999 screens
Number of screens	Screen No.	0: No display 1 to 3999: User-registered screens 9000: "Initializing system" screen 9001: Display history (occurrence order) screen 9002: Display history (frequency order) screen 9020: Programming Console function screen 9999: Return to the previous screen 9021 to 9023: Device monitor
Screen registration method		By transmitting screen data created using the Support Tool to the NT31/NT31C By transmitting screen data stored in a memory unit to the NT31/NT31C (automatic/manual)
Screen saving method		Flash memory (screen data memory in the PT)

Display Element Specifications

Model	NT31-ST123(B)-EV3	NT31C-ST143(B)-EV3
Display characters	Half-size characters (8 × 8 dots): Alphanumerics and symbols Normal-size characters (8 × 16 dots): Alphanumerics and symbols Mark data (16 × 16 dots): User defined picture characters
Enlargement function	Normal size, double width, double height, and magnifications of 4X, 9X, 16X, 64X
Smoothing processing	Available for enlarged characters with magnification of 4X or greater (excluding marks)
Character display attribute	Normal, reverse, flashing, reverse and flashing, transparent
Image data	Variable-size pictograph Size: Min. 8 × 8 dots, Max. 320 × 240 dots The size can be set in 8-dot units. It is not possible to set enlarged display, smoothing processing, or display attributes such as reverse/flashing.
Library data	Combination of any characters and graphics Size: Min. 1 × 1 dots, Max. 320 × 240 dots Any size can be set. Enlarged display, smoothing processing, and display attributes such as reverse/flashing are displayed according to the setting registered.
Graphics	Polyline, circle, arc, fan, square, polygon
Line type	Solid line, dotted line, alternate long and short dash, long and two short dashes (only polylines for other than solid lines)
Tilling	10 types
Graphic display attribute	Normal, flashing, reverse, reverse flashing
Display colors	2 colors (black/white)	8 colors (black / blue / red / purple / green / light blue / yellow / white)

Data Capacities

Model	NT31-ST123(B)-EV3/NT31C-ST143(B)-EV3
Screen data capacity	1 MB
Numeric memory table	2 words x up to 2,000 (1,000 tables can be backed up with battery)
Character string memory table	40 normal-size characters x up to 2,000 (Data can be written to and read from 500 tables)
Bit memory table	1 bit × 1,000
Mark data	224 (16-by-16-dot basis)
Image data	4,095 items
Library data	12,288 items

NT20

General Specifications

Model	NT20-ST121(B)/128(B)
Rated power supply voltage	24 VDC
Allowable power supply voltage range	20.4 to 27.6 VDC (24 VDC -15%/+10%)
Allowable power interruption time	Not specified
Power consumption	10 W max.
Ambient operating temperature	0 to 50 °C *1 (with no condensation)
Storage temperature	-20 to 70 °C
Ambient operating humidity	35% to 85 % (0 to 40 °C) 35% to 50 % (40 to 50 °C) (with no condensation)
Ambient storage humidity	35% to 85 % (-20 to 40 °C) 35% to 50 % (40 to 50 °C) 35% to 45 % (50 to 70 °C) (with no condensation)
Ambient operating environment	No corrosive gases
Noise immunity	Conforms to IEC 61000-4-4 at 2 kV (power supply line).
Vibration resistance (during operation)	5 to 9 Hz, single amplightude: 3.5 mm 9 to 150 Hz, 9.8 m/s² 10 times (1 octave/min) each in X, Y, and Z directions
Shock resistance (during operation)	147 m/s² , 3 times each in X, Y, and Z directions
Dimensions	190 × 108 × 53.5 mm (W × H × D)
Panel cutout dimensions	178.5 + 0.50 × 98.5 + 0.50 mm (horizontal × vertical) Panel thickness: 1.6 to 4.8 mm
Weight	0.7 kg max.
Degree of protection	Front panel operating section: Equivalent to IP65 oil-proof type and NEMA 4. *2
Applicable standards	UL 1604 Class 1 Division 2, EC Directives

*1. The display qualighty (e.g., contrast) will deteriorate at temperatures above 40°C. At low temperatures, the response
speed will be reduced due to the characteristics of liquid crystal.
*2. The NT631/NT31/NT20 may not be able to be used in locations subject to long-term oil exposure.

Display/Panel Specifications

Item		Specifications
*Display 1**	Display device	Monochrome STN LCD
	Number of dots (resolution)	140 (128) × 260 (256) dots (horizontal × vertical) Dot size: 0.42 mm The number of dots that can be used in NT20 system programs is indicated in parentheses.
	Effective display area	66 (57.6) × 120 (115.2) mm (horizontal × vertical) The effective display area that can be used with NT20 system programs is indicated in parentheses.
	Display mode	Blue mode
	Service life	50,000 hours min.
	Contrast adjustment	The contrast can be adjusted from the back of the PT.
Backlight	Service life	50,000 hours min. *2
	Replacement	Cannot be replaced.
	Brightness adjustment	Cannot be set.
	Automatic turn-OFF	Can be set to either 10 minutes, 1 hour, or light.
Front-panel indicator LED	RUN	Light green: Normal operation with Memory Unit automatic transfer completed. Flashing green: Executing Memory Unit automatic transfer or automatic transfer error.

*1. There are sometimes faulty in the touch panel, but this does not indicate an error as long as the number of bright or
dark pixels does not exceed the following limits.
4 total bright or dark defects maximum of the following size with no more than one per 20-mm square: 0.2 mm <
(short dia. + long dia.)/2 < 0.55 mm
*2. This time is only a guide to the half-life of luminescence at room temperature and standard humidity.
The service life will be dramatically reduced in low-temperature environments. For example, the service life at 0°C or
less is approximately 10,000 hours (reference value).

Operation Specifications

Item	Specifications
Touch panel	Number of switches: Up to 72 registered per screen (12 × 6 (horizontal × vertical))
	Switch size: 9.14 × 9.18 mm (horizontal × vertical)
	Input: Pressure sensitive
	Operating force: 1 N max.
	Service life: 1,000,000 operations min.

External I/F Specifications

Model		NT20-ST121(B)
Serial communications	Serial port A	Conforms to EIA RS-232C. D-sub 9-pin connector (female) +5 V (150 mA max.) output at pin No. 6 The +5 V output, however, cannot be used simultaneously at ports A and B.
Serial communications	Serial port B	EIA RS-232C D-sub 9-pin connector (female) +5 V (150 mA max.) output at pin No. 6 The +5 V output, however, cannot be used simultaneously at ports A and B.
Expansion I/F		Dedicated connector

Display Specifications

Item		Specifications
Item		Host Link, NT Link, or C200H Direct Communications	Memory Link (RS-232C) Communications
Display elements	Display characters	Fixed displays (character strings registered for each screen)
	Character string displays	32 per screen	128 per file, 32 per screen
	Numeric displays *	50 per screen max., 8-digit display
	Bar graph displays *	50 per screen
	Graphic displays	Any position
	Lamps	128 per screen	256 max. per file
	Touch switches	72 per screen	256 max. per file
	Numeral settings	Numeral setting display (8 digits), 50 per screen
Screen types	Normal screen	The normal screen display
	Overlapping screens	A maximum of 8 registered screens can be displayed overlapped with each other.
	Continuous screens	Switch among up to 8 screens (Use ↑ and ↓ touch switch keys to switch screens.)
Screen attributes		Buzzer, numeral settings, backlight	Buzzer, numeral settings, backlight, bit inputs
Number of screens		495 screens max.
Screen registration method		By transmitting screen data created using the Support Tool to the NT20 By transmitting screen data stored in a Memory Unit to the NT20 (automatic/manual)
Screen saving method (image data memory)		Flash memory (specific NT20 format)

* No. of numeral table entries that can be used (No. of numeral displays used + No. of graphs used + No. of numeral
settings) ≤128

Display Element Specifications

Item	Specifications
Display characters	Half-size characters (8 × 8 dots): Alphanumerics and symbols
	Normal-size characters (8 × 16 dots): Alphanumerics and symbols
	Mark data (16 × 16 dots): User defined picture characters
Enlargement function	Double width, double height, and magnifications 4X, 9X, 16X
Smoothing processing	Available for enlarged characters with magnification of 4X or greater
Character display attribute	Normal, reverse, flashing, reverse and flashing
Graphics	Polylines, circles

Data Capacities

Item	Specifications
Item	Host Link, NT Link, or C200H Direct Communications	Memory Link (RS-232C) Communications
Character strings	32 characters × 128
Numeral data	8 digits × 128
Mark data	64
Touch switches	No limit	256 per file max.
Lamps	No limit	256 per file max.

last update: April 01, 2015

NT631C

NT31C/NT31

NT20

TITLE	DOCUMENT TYPE	SIZE
NT series data sheet	Catalog	1074KB

NT631C

General Specifications

Display/Panel Specifications

Operation Specifications

External I/F Specifications

Display Specifications

Display Element Specifications

Data Capacities

NT31/NT31C

General Specifications

Display/Panel Specifications

Operation Specifications

External I/F Specifications

Display Specifications

Display Element Specifications

Data Capacities

NT20

General Specifications

Display/Panel Specifications

Operation Specifications

External I/F Specifications

Display Specifications

Display Element Specifications

Data Capacities

NT631C

NT31C/NT31

NT20

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