model

CPU SR20XP

Order No. Model

UN 288-1SR20XP-0AA0

Dimensions W x H x D (mm)

110 x 100 x 81

power consumption

20W

Current supply (SM bus)

up to 1400 Ma

Current supply (24 V DC)

300mA max.

CPU characteristics

user memory

24 KB program memory/16 KB data memory/10 KB retentive memory

Onboard digital I/O

12 points input/8 points output

Process image size

256-bit input (I)/256-bit output (Q)

simulated image

56 words of input (AI)/56 words of output (AQ)

bit memory (M)

256 bits

temporary (local) storage

64 bytes in the main program, 64 bytes in each subroutine and interrupt routine

I/O module expansion

Up to 6 expansion modules

Signal Board Expansion

Up to 1 signal board

high speed counter

A total of 6
    single-phase: 6 200 KHz AB phase: 4 100 KHz

Pulse output

-

Pulse catch input

12

loop break

2 total, resolution 1 ms

edge interrupt

4 rising and 4 falling edges (6 each with optional signal board, 2 with BD board)

Real Time Clock Accuracy

+/- 120 seconds/month

Real time clock keeps time

Computing performance

boolean operation

<0.15 μs/instruction

move word

<1.2 μs/instruction

Mathematical operations on real numbers

<3.6 μs/instruction

user program element

FOR

Type/Number
    • Main program: 1
    • Subroutines: 128 (0 to 127)
    • Interrupt routines: 128 (0 to 127) nesting depth
    • From main program: 8 subroutine levels
    • From interrupt routines: 4 subroutines program level

accumulator

4

timer

Type/Quantity
    • Non-holding type (TON, TOF): 192 pieces (T32~T65, T96~T255)
    • Holding type: 64 pieces (T0~T31, T64~T95)

counter

256

communication

Number of ports

Ethernet: 1

Serial port: 1 (RS485)

Expansion port: Optional RS232/485 BD board (switchable)

programming device

Serial port: 1 connection, Ethernet port: 1 connection

CPU（PUT/GET）

Ethernet: total number of client, server connections 6

Open User Communication

Ethernet: The total number of active and passive connections is 6, and the monitoring protocol can dynamically allocate connection resources

data transfer rate

Network port: 10/100 Mb/s adaptive

RS485 system protocol: 9600, 19200 and 187500 b/

RS485 Freeport: 2400 to 115200 b/s

Isolation (external signals and PLC logic side)

Ethernet: Transformer isolated, 1500 V DC RS485: None

cable type

Ethernet: CAT5e shielded cable RS485: PROFIBUS network cable

power input

voltage range

85 ~ 264 V AC

power frequency

47 ~ 63 Hz

Inrush current (maximum)

20 A at 264 V AC

Isolation (input supply and logic side)

1500 V AC

Internal fuse (not user replaceable)

1 A, 250 V, slow blow

Power Output

voltage range

20.4 ~ 28.8 V DC

Rated output current (maximum)

300 mA

Maximum ripple noise (<10MHz)

< 1 V peak

Isolation (CPU logic side and sensor supply)

not isolated

digital input

Enter points

12

type

sink/source

Rated voltage

24 V DC at 4 mA, nominal

Allowable continuous voltage

30 V DC max.

surge voltage

35 V DC for 0.5 s

Logic 1 signal (minimum)

I0.0～I0.3, I0.6～I1.1:
    3.7mA at 15VDC;
    other inputs: 2.5mA at 15VDC;

Logic 0 signal (maximum)

DI point (I0.0～I1.3): 1mA at 5VDC;

Isolation (field side and logic side)

500 V AC for 1 min

filter time

Individually selectable for each channel (points I0.0 to I1.3)

HSC input frequency (maximum)

Single phase: 6 200 KHz
    AB phase: 3 200 KHz

digital output

output points

8

type

relay, dry contact

voltage range

5 ~ 30 V DC or 5 ~ 250 V AC

Rated current per point (maximum)

2.0 A

Rated current (max)

10A

lamp load

30 W DC/200 W AC

On-state resistance

0.2 Ω max for new devices

Leakage current per point

-

overload protection

none

Mechanical life (no load)

10,000,000 open/close cycles

Contact life under rated load

100,000 open/close cycles

cable length

500m (shielded), 150m (unshielded)

analog input

Enter points

4

type

single ended

Voltage input range

±10 V

Current input range

0～20mA

Voltage data range

-27648～+27648

Current data range

0～+27648

DC input impedance

＞100KΩ

input voltage

30VDC

resolution

11 bits plus 1 sign bit, LSB value: 4.88mV

precision

±1.0% of full scale
    ±2.0% of full scale [Typical limit -0°C~50°C]

Analog to Digital Conversion Time

250ms

noise suppression

Typical -40dB@50Hz

isolation

none

address

AIW0~AIW6

analog output

output points

2 outputs

output type

voltage or current

Voltage output range

0～+10V

Current output range

0～+20mA

resolution

12 bits

data range

Voltage: 0～+27648
    Current: 0～27648

precision

Voltage output ±1% of full scale, current output ±1% of full scale [typically at 25°C]
    voltage output ±2% of full scale, current output ±2% of full scale [typical limit -0°C to 50°C]

Maximum output drive

isolation

none

address

AQW0~AQW2

Environmental parameters

Working temperature

-10°C～60°C (horizontal installation), -10°C～40°C (vertical installation)

Transport ambient temperature

-20℃～80℃

Ambient relative humidity

5～95%, non-condensing (RH level 2, in line with IEC60068-2)

degree of protection

IP20

Mechanical Rating (Vibration)

Conforms to IEC61131-2

grounding

Type D grounding (grounding resistance: below 100Ω), common grounding with strong current system is not allowed

use environment

No corrosive, flammable gas, conductive dust (dust) is not serious location

use height

Below 2000M (It cannot be used in an environment pressurized to above atmospheric pressure. Otherwise, failure may occur .)