CPU SR20 AC/DC/RLY

E7 200Smart CPU Standard Edition，CPU SR20 Relay，12DI/8DO,1*RJ45，2*RS485, Expandable to 6IO

Model no

SR20

Article No

E7 288-1SR20-0AA1

Description

Standard CPU SR20, Relay

Dimensions WxHxD（mm）

90×100×81mm

I/O

12DI/8DO

+86 13713990149

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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	-
	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	Support

Performance/ Processing Time

.Boolean

0.35uS/instruction

.Moving Word Operations

1.2uS/instruction

.Floating Point

1.7uS/instruction

Communications Built-in	Ports	Ethernet: 1 Body serial port: 2（DB9-RS485） DB board serial port: 1（CM01-RS485-RS232）
	HMI Connections	Ethernet: 8 connections Serial port: 4 connections
	Programming (PG)	1 connection
	Ethernet
	CPU（PUT/GET）	8 clients and 8 servers connections
	Open type communication	8 active and 8 passive connections
	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	85-264VDC
	Input current（CPU only）	130mA（w/o 300mA power supply output of the sensor）when CPU only at 120V AC 250mA（w/ 300mA power supply output of the sensor）when CPU only at 120V AC 80mA（w/o 300mA power supply output of the sensor） when CPU only at 240V AC 150mA（w/ 300mA power supply output of the sensor）when CPU only at 240V AC
	Input current（Includes CPU and all expansion accessories）	300mA at 120VAC 190mA at 240VAC
	Inrush Current (Max)	9.3A at 264VDC
	Sensor voltage	20.4-28.8VDC
	Isolation
	Input to logic	1500VAC,1min
	Sensor to logic	Not isolated

Digital Input	Number of Inputs	12
	Input type	The sinking /sourcing type（IEC type 1 sinking）
	Allowable Continuous Voltage	Max.30VDC
	Surge voltage(Max)	35V DC, lasting 0.5s
	Logic 1 signal(Min)	15V DC when the current is 2.5mA
	Logic 0 signal(Max)	5V DC when the current is 1mA
	Optical Isolation (field side and logic side)	500V AC lasting 1.0min
	Isolation group	1
	Filter time	Each channel can be separately selected（point I0.0 to I1.3): 0.2, 0.4, 0.8, 1.6, 3.2, 6.4 and 12.8 µs; 0.2, 0.4, 0.8, 1.6,3.2, 6.4 and 12.8ms;

Digital Output	Number of Outputs	8
	Output type	Relay, dry contact
	Voltage range	5-30VDC or 5-250VAC
	Surge Current (Max)	7A when power on
	Rated Current per each point (Max)	2.0A
	Switching Frequency (Max)	Not recommended
	Turn-on delay（Qa.0-Qa.3)	Up to 10ms
	Turn-off delay（Qa.4-Qa.7)	Up to 10ms
	Optical Isolation (field side and logic side)	500V AC lasting 1.0min
	Contact Lifetime
	non-loaded	10,000,000 cycles
	Rated load	10,000 cycles