CPU ST20 DC/DC/DC

ST20 Article No H7 288-1ST20-0AA0 ,CPU SR20 Standard CPU transistor,Dimensions WxHxD（mm）90×100×81mm Power Consumption 20W

Model no

ST20

Article No

H7 288-1ST20-0AA0

Description

CPU ST20 Standard CPU transistor

Dimensions WxHxD（mm）

90×100×81mm

I/O

12DI/8DO

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Product parameters Wiring diagram Relevant information

CPU Features	Program Memory (KB)	12
	Data Memory (KB)	8
	Retentive Memory (KB)	10
	Data Preservation	permanent
	Built-in I/O
	Digital Input/Output	12 input /8 output
	Analog Input/Output
	Process Image Size	256-bit input (I)/256-bit output (Q)
	Analog Image	56 words input (AI) 56 words output (AQ)
	Expansion Modules Allowed	Up to 6 modules
	High speed counter (total)	6 in total
	.Single Phase	4 200KHz + 2 30KHz
	.Quadrature Phase	2 100KHz + 2 20KHz
	Pulse output	2 100KHz
	Timer	Non-holding (or not retained) (TON, TOF):192 Holding (or retained) : 64
	Counters	256
	Bit memory（M）	256 bits
	Cycle Interrupt	2 in total, T32 and T96 have a resolution of 1ms
	Interrupt Edge	4 up and 4 down
	Real Time Clock	Usually 7 days, at least 6 days at 25°C
	Memory card	support
	Signal expansion boar	-

Performance/ Processing Time

.Boolean

0.35uS/instruction

.Moving Word Operations

1.2uS/instruction

.Floating Point

1.7uS/instruction

Communications Built-in	Ports	Ethernet：1; Serial port：1（RS485）; Ethernet attached serial port：0;
	HMI Connections	Ethernet：5 Connect; Serial port：4 Connect
	Programming (PG)	1Connect
	Etherne	Upload and download program: support touch screen; Host computer communication: support MODBUS TCP
	CPU（PUT/GET）	support 5 links
	Data Transmission rate	Ethernet：10/100 Mb/s； RS485 System Protocol：9600,19200 and 187500 b/s； RS485 free port：1200 to 115200 b/s
	Isolation	Ethernet：Transformer isolation，1500VDC; RS485：None
	Cable type	Ethernet：CAT5e Shielded cable RS485：PROFIBUS Network cable

Power	Input Voltage	20.4-28.8V DC
	Input current（CPU only）	190mA（w/o 300mA power supply output of the sensor）when CPU only at 24V AC 470mA（w/ 300mA power supply output of the sensor）when CPU only at 24V AC
	Input current（Includes CPU and all expansion accessories）	300mA at 120VAC 190mA at 240VAC
	Inrush Current (Max)	680mA at 24V AC
	Sensor voltage	11.7A at 28.8V DC
	Isolation
	Input to logic	1500VAC,1min
	Sensor to logic	No quarantine

Digital Input	Number of Inputs	12
	Input type	The sinking /sourcing type ( IEC type1 sinking, excepting I0.0 to I0.3)
	Allowable Continuous Voltage	Max.30VDC
	Surge voltage(Max)	35V DC, lasting 0.5s
	Logic 1 signal(Min)	the voltage is 4V DC when it ranges from I0.0 to I0.3 I0.6 to I0.7: 8mA, other input: 15V DC at 2.5mA
	Logic 0 signal(Max)	the voltage is 4V DC when it ranges from I0.0 to I0.3 I0.6 to I0.7: 1mA, other input: 5V DC at 1mA
	Optical Isolation (field side and logic side)	500V AC lasting 1.0min
	Isolation group	1
	Filter time	Each channel can be separately selected (points I0.0 to I1.5): 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8us; 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8ms each channel can be individually selected (I1.6 and larger points): 0, 6.4, 12.8ms

Digital Output	Number of Outputs	8
	Output type	Solid-MOSFET (source-type)
	Voltage range	20.4-28.8V DC
	Surge Current (Max)	8A, max. lasting 100ms
	Rated Current per each point (Max)	0.5A
	Switching Frequency (Max)	-
	Turn-on delay（Qa.0-Qa.3)	from the disconnection to connection(Max): 1.0 µs; from the connection to disconnection(Max): 3.0 µs
	Turn-off delay（Qa.4-Qa.7)	from the disconnection to connection(Max): 50 µs; from the connection to disconnection(Max): 200 µs
	Optical Isolation (field side and logic side)	500V AC lasting 1.0min
	Contact Lifetime
	non-loaded	-
	Rated load	-