ROOTECH

Measuring the External Temperature of Distribution Panels
Measuring range	-20 to 100°C
Accuracy	Typ.±1.0°C
Response time(τ 63%)	Maximum 30 seconds
Temperature Measurement¹
Accuracy	Typ.± 1.0°C
Measurement cycle	1 second
Measuring range	–20 to 100°C
Response time (τ 63%)	Maximum 30 seconds
Measurement parameters	External temperature	Accura 2550TEMP module measures the external temperature of the distribution panel.
	Internal temperature¹	Up to 6 Accura TSEN/THSEN devices can measure temperature at multiple locations in the distribution panel.
Events	External temperature	Events on the external temperature measured by Accura 2550TEMP
		Users can reset the event with the RESET button on Accura 2550TEMP.
	Internal temperature¹	Events on the internal temperature measured by Accura TSEN/THSEN
		Users can reset the event with the RESET button on the Accura TSEN/THSEN device where the event occurred.
	Temperature difference	Events on the temperature difference between two different locations
		Users can reset the event with the RESET button on the Accura TSEN/THSEN device where the event occurred.
Humidity Measurement²
Accuracy	Typ.± 2.0%RH @25°C
Measuring range /Measuring range for guaranteed accuracy	0 – 100 %RH / 0 – 80 %RH
Measurement cycle	1 second
Response time (τ 63%)	Maximum 8 seconds
Long-term Drift	Typ.< 0.25 %RH/year
Resolution	0.1 %RH
Measurement parameter	Internal temperature²	Up to 6 Accura THSEN devices can measure humidity at multiple locations in the distribution panel.

1. It is measured by Accura TSEN/THSEN.
2. It is measured by Accura THSEN.

Accura 2550TEMP

Power Supply
Power supply voltage	Receives power from Accura 2500M via the internal communication cable
Power consumption	780 mW power is consumed when the backlight of the LCD screen and all LEDs are turned on, and the digital output is activated.¹
LCD
Display	2.7" Graphic 80 x128 Dots (58.0 x 40.0mm) FSTN LCD
LED
POWER	Green	It is turned on when the device is powered on.
EVENT	Red	It blinks red when an event occurs.
MODULE	Orange	It blinks orange when Accura 2550TEMP module normally communicates with Accura 2500M or other Accura 2550 modules.
TSEN	Orange	It blinks orange when Accura 2550TEMP module normally communicates with Accura TSEN/THSEN devices.
Connection with Accura 2500/2550
Dedicated communication	Sends/receives data to/from Accura 2500M or other Accura 2550 modules
	Port name	RJ45–A, RJ45–B (The ports have the same functions.)
	Connector type	RJ45
	Protocol	Dedicated protocol used for internal communication
	Communication cable	Internal communication cable²
Connection with Accura TSEN/THSEN
Dedicated communication	Collects data from Accura TSEN/THSEN devices
	Port name	TEMP
	Connector type	RJ45 connector
	Protocol	Dedicated protocol used for internal communication
	Communication cable³	Ethernet cable 24 AWG solid copper CAT.5e FTP(F/UTP)⁴
	Cable length	Up to 100 m⁵(the length of the entire cable connected in a daisy chain)
	Number of connectable Accura TSEN/THSEN devices	Up to 6 Accura TSEN devices can be connected in a daisy-chain configuration
Digital Inputs
Port name	DI, DI_G
Connector type	Screw-type terminal
Wire specification	0.21–3.5 mm² (24–12AWG)
Insulation status	Uninsulated
Input type	DC 3.3 V internal power supply (self-excitation)
Current passing through the contacts	0.2 mA
Minimum pulse width	100 ms
Digital Outputs
Port name	DO, DO_G/ Mechanical Relay, Form–A
Connector type	Screw-type terminal
Wire specification	1.5–3.5 mm² (16–12AWG)
Output type	Dry contact (external excitation)
Insulation	AC 2,000V for 1 minute
Maximum rating	AC 240 V/5 A, DC 30 V/5 A
Temperature Measurement
Measurement data	External temperature of the distribution panel where Accura 2550TEMP module is installed
Accuracy	Typ.± 1.0°C
Measurement cycle	1 second
Measuring range	–20 to 100°C
Response time (τ 63%)	Maximum 30 seconds
Events
Temperature events	External temperature	Events on the external temperature measured by Accura 2550TEMP
		Users can reset events with the RESET button on Accura 2550TEMP.
	Internal temperature	Events on the internal temperature measured by Accura TSEN/THSEN
		Users can reset events with the RESET button on Accura TSEN/THSEN device where the events occurred.
	Temperature differences	Events on the temperature difference between two different locations
		Users can reset events with the RESET button on Accura TSEN/THSEN device where the events occurred.
DI/DO events	Events on the open/closed contact

1. When connected with the Accura TSEN/THSEN device, it additionally consumes 80 mW power per Accura TSEN/THSEN device.
2. It is provided with the product.
3. The cables used to connect Accura 2550TEMP to Accura TSEN/THSEN are not provided.
4. FTP(F/UTP): Foiled Shield Twisted Pair
5. It indicates the maximum cable length between Accura 2550TEMP and Accura TSEN/THSEN when Accura 2550TEMP is the first module connected to Accura 2500.

Accura TSEN/THSEN

Power Supply
Power supply voltage	Receives power from Accura 2550TEMP module via communication cables
Power consumption	80 mW
LED
Green	It blinks green in normal operation mode.
Red	It blinks red when an event occurs.
Connection for Internal Communication
Dedicated communication	Sends/receives data to/from Accura 2550TEMP or other Accura TSEN/THSEN devices
	Port name	RJ45A, RJ45B (The ports have the same functions.)
	Connector type	RJ45 connector
	Protocol	Dedicated protocol used for internal communication
	Communication cable¹	Ethernet cable 24 AWG solid copper CAT.5e FTP²
	Cable length	Up to 100 m³(the length of the entire cable connected in a daisy chain)
	ID that enables communication	1 – 6
	Standby ID	0 (factory default ID number, communication unavailable)
	Number of connectable Accura TSEN/THSEN devices	Up to 6⁴
Temperature Measurement with Accura TSEN/THSEN
Measuring data	Internal temperature of the distribution panel where Accura TSEN/THSEN devices are installed
Accuracy	Typ.± 1.0°C
Measurement cycle	1 second
Measuring range	–20 to 100°C
Response time (τ 63%)	Maximum 30 seconds
Humidity Measurement with Accura THSEN
Measuring data	Internal humidity of the distribution panel where Accura THSEN devices are installed
Accuracy	Typ.± 2.0%RH @25°C
Measuring range /Measuring range for guaranteed accuracy	0 – 100 %RH / 0 – 80 %RH
Measurement cycle	1 second
Response time (τ 63%)	Maximum 8 seconds
Long-term drift	Typ. < 0.25 %RH/year
Resolution	0.1 %RH

1.The cables used to connect Accura 2550TEMP to Accura TSEN/THSEN are not provided.
2. FTP(F/UTP): Foiled Shield Twisted Pair
3. It indicates the maximum cable length between Accura 2550TEMP and Accura TSEN/THSEN when Accura 2550TEMP is the first module connected to Accura 2500.
4. Up to 6 Accura TSEN/THSEN devices can be connected to Accura 2550TEMP module.

General Specifications

Environmental Conditions
Operating temperature	-20 to 70℃ (-4 to 158℉)
Safe operating temperature¹	-20 to 60℃ (-4 to 140℉)
Storage temperature	-40 to 85℃ (-40 to 185℉)
Operating humidity	5 - 95% (non-condensing)
Operating altitude	Up to 2,000 m
Certifications
CE	EN 55011:2009/A1:2010, EN IEC 61326-1:2021, EN IEC 61326-2-1:2021, EN IEC 61000-3-2:2019/A1:2021, EN 61000-3-3:2013/A2:2021
UL (certification process underway)	UL 61010-1 3rd Edition, IEC 61010-2-030 2nd Edition
KC	EN 55011:2009/A1:2010, EN IEC 61326-1:2021, EN IEC 61326-2-1:2021
General
Warranty period	2 years