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Accura 2550IO Modules

Common Features
Power supply	Communication cable (RJ45A, RJ45B)	Receives power from Accura 2500M via the internal communication cable
	Aux. Connector (+5V-)	Auxiliary input terminal: used to supply additional power from an external power source when the power supplied by Accura 2500M is insufficient ^1,2
		Connector type	Screw-type terminal(pluggable)
		Wire specification	0.14 - 4 mm² (12 - 26 AWG), copper
		Torque	0.6 Nm (6.1 kgf-cm, 5.3 lbf-in)
		Wire temperature rating	70 °C or higher
Communication port	Port name	RJ45A, RJ45B(ring and daisy-chain topology)
	Connector type	RJ45 connector
	Protocol	Dedicated protocol of the manufacturer
	Communication cable ³	Ethernet cable 24 AWG solid copper Cat 5e FTP, STP, SFTP ⁴
Rotary switch⁵	Communication ID	1 - 9 (The letters from A to F on the rotary switch indicate standby IDs.)
	Standby ID	0 (Factory default ID, communication unavailable)
Digital Input	Connector type	Pluggable connector / Push-in spring connection
	Wire specification	0.25 - 2.5 mm² (24 - 14 AWG)
	Insulation voltage	Max AC 2,000 V for 1 min
	Input type	Internal DC 24 V power supply (self-excitation)
Digital Output	Connector type	Pluggable connector / Push-in spring connection
	Wire specification	0.25 - 2.5 mm² (24 - 14 AWG)
	Output type	Dry contact (external excitation), Form-A contact
	Insulation voltage	Max. AC 2,000 V for 1 min
	Output rating	AC 250 V 5 A, DC 30 V 5 A ⁶
	Max. allowable voltage (Open contact)	1,000 V
	Output signal type	Latch, Pulse (configurable)
	Command latency time	Max. 100 ms (DO control via communication command)
	Device latency time	Max. 10 ms (DO control via internal device signals)
Analog Input	Connector type	Pluggable connector / Push-in spring connection
	Wire specification / Torque	0.25 - 2.5 mm² (24 - 14 AWG) / 0.25 Nm (2.5 kgf-cm, 2.2 lbf-in)
Accura 2550IO-DI1/DI2
Digital Input	Number of channels	11 channels	Accura 2550IO-DI1
		22 channels	Accura 2550IO-DI2
Accura 2550IO-DO1/DO2
Digital Output	Number of channels	6 channels	Accura 2550IO-DO1
		12 channels	Accura 2550IO-DO2
Accura 2550IO-AI1/AI2
Analog Input (DC current)	Number of channels	6 channels	Accura 2550IO-AI1
		12 channels	Accura 2550IO-AI2
	Input type	DC 4 - 20 mA / 0 - 20 mA current
	Input signal type	Isolated single-ended input (common gound between channels)
	Internal input resistance	130 Ω
	Accuracy	±0.5 % Full Scale (Full scale: 20 mA)
Accura 2550IO-RTD1/RTD2
Analog Input (RTD sensor)	Number of channels	4 channels	Accura 2550IO-RTD1
		8 channels	Accura 2550IO-RTD2
	RTD sensor type	PT 100 / PT 1000
	Sensor wiring method	2-Wire / 3-Wire
	Temp. measuring range	-100 - 200 °C
	Accuracy	±0.5 % Full Scale (Full scale: 200 °C)
	Frequency range	200 Hz (-3 dB, 1st order Low Pass Filter)
	Sampling	480 samples/0.2 sec
	Data update cycle	0.2 sec

1. When the power supply capability of Accura 2500M is insufficient, additional power can be supplied by either connecting
Accura 2550PS module to Accura 2550IO module via a communication cable or by connecting an external power source to
the auxiliary input terminal of Accura 2550IO module.
2. The auxiliary input terminal is only available on the Accura 2550IO-DI2/DO2/DIO/AI2/RTD2 module.
3. Communication cables for connecting to Accura 2550IO modules are not included.
4. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs)
5. The communication ID of a module with a rotary switch is calculated by adding 30 to the rotary switch ID.
6. Due to the insulation distance limitations between channels, either AC voltage or DC voltage must be used for all channels.

Accura 2550PS Module

Power supply ¹
Input power supply	Port name	L+, N-, NC, (Ground)
	Connector type	Screw-type terminal(pluggable)
	Wire specifications	2.1 -3.5 mm² (14 - 12 AWG), copper
	Wire temperature rating	70 °C or higher
	Power supply voltage(Us)	AC 100 - 240 V 50/60Hz, DC 100 - 300 V, CATⅡ
	Operating voltage range	0.9 x Us - 1.1 x Us
	Power consumption	Maximum 20 W (based on the input power)
	Inrush current	Peak 31 A, duration: no more than 1 ms (AC 220 V)
		Peak 11 A, duration: no more than 0.2 ms (DC 110 V)
	External input fuse capacity²	2 A, 500 V
Output power supply	Port name	RJ45A, RJ45B (used for power supply to Accura 2550IO module)
		+5V- (screw-type, auxiliary output terminals)
	Output voltage	DC 5.0 - 5.4 V
	Supplied power	Maximum 15 W (based on the output power)
Load Status LED Indicator
Load	LED Indicator Color
Less than 50 %	Blue
Between 50 and 80 %	Blue, Yellow
From 80 and 100 %	Blue, Yellow, Red

1. To ensure proper operation when applying power, power should be supplied to Accura 2500M and Accura 2550PS modules
simultaneously through a single switch.
2. When installing a fuse at the voltage line, it is recommended to use a fuse above Class RK5 2A/500V due to inrush current.

General Specifications

Environmental Conditions
Operating temperature	-20 - 60 ℃(-4 - 140 ℉)
Storage temperature	-40 - 85 ℃(-40 - 185 ℉)
Operating humidity	5 - 95%(non-condensing)
Operating altitude	Up to 2,000 m
Operating environment	Pollution degree 2
General
Warranty Period	2 years
Shock			IEC 60068-2-27
All modules	15 g / 11 ms
EMC Immunity
Electrostatic discharge immunity	8 kV / air	±6 kV / contact	IEC 61000-4-2
Radiated radio-frequency electromagnetic field immunity	10 V/m		IEC 61000-4-3
Electrical fast transient/Burst immunity	±2 kV / 5 kHz (power)	±1 kV / 5 kHz (signal)	IEC 61000-4-4
Surge immunity	±1 kV (line-earth)	±0.5 kV (line-line)	IEC 61000-4-5
Immunity to conducted disturbances Induced by radio-frequency field	3 V		IEC 61000-4-6
Power Frequency Magnetic Field	30 A/m		IEC 61000-4-8
Voltage dips, short interruption and voltage variations immunity	0 %, 0.5 cycles	40 %, 10/12 cycles	IEC 61000-4-11
	70 %, 25/30 cycles	80 %, 250/300 cycles
Voltage Interruption (Class C)	0 %, 250/300 cycles		IEC 61000-4-11
EMC Emission
Conducted emission and radiated emission	CISPR 11 Group1 Class A		CISPR 11
	IACS UR E 10 Rev. 7 2018

Module type	Module Name	Channel		Specifications	Power consumption
DI1 module	Accura 2550IO-DI1	Digital input	11 channels	Internal DC 24 V power supply (self-excitation)	0.52 W
DI2 module	Accura 2550IO-DI2	Digital input	22 channels	Internal DC 24 V power supply (self-excitation)	0.59 W
DO1 module	Accura 2550IO-DO1	Digital output	6 channels	Dry contact (external excitation)	1.07 W
DO2 module	Accura 2550IO-DO2	Digital output	12 channels	Dry contact (external excitation)	2.02 W
DIO module	Accura 2550IO-DIO	Digital input	11 channels	Internal DC 24 V power supply(self-excitation), Common ground between channels	1.45 W
DIO module	Accura 2550IO-DIO	Digital output	6 channels	Dry contact (external excitation), Isolation between channels	1.45 W
AI1 module	Accura 2550IO-AI1	Analog input	6 channels	DC 0 - 20 mA	0.52 W
AI2 module	Accura 2550IO-AI2	Analog input	12 channels	DC 0 - 20 mA	0.54 W
RTD1 module	Accura 2550IO-RTD1	RTD input	4 channels	RTD(PT100/PT1000) sensor, 2-wire and 3-wire connections	0.52 W
RTD2 module	Accura 2550IO-RTD2	RTD input	8 channels	RTD(PT100/PT1000) sensor, 2-wire and 3-wire connections	0.58 W

Module Type	Module Name	Item	Description	Power
Auxiliary power supply module	Accura 2550PS¹	Input power supply	AC 100 - 240 V 50/60 Hz, DC 100 - 300 V	20 W
		Output power supply	DC 5.0 - 5.4 V	15 W
		Function	If the number of connected modules exceeds the power supply capacity of Accura 2500M, additional power must be supplied.