Siemens EM 221 Digital Input Module | 6ES7 221-1BF22-0XA0

Siemens EM 221 Digital Input Module | 6ES7 221-1BF22-0XA0

Siemens EM 221 Digital Input Module 6ES7221-1BF22-0XA0:

The Siemens EM 221 Digital Input Module 6ES7221-1BF22-0XA0 brings to the user a powerful solution of many control applications, making it easy to adapt and extend the system. The S7 is a family of PLCs that allow users to choose the components they need best suited to their needs, and the long-term successor to the highly successful S5 range. What the S5 can do, the S7 can do faster and more easily.

New CPU hardware support provides the option to turn off run mode edit to get more program memory

CPU 224XP supports onboard analog I / O and two communication ports

CPU 226 includes supplemental input filters and pulse catch facility

Processing time of 0.22 per instruction

Modular expansion up to 256 total I / O (excluding S7-221)

Strong instruction set, and real time performance

Programming through the RS-485 communications port

All models have EEPROM memory for user program storage

2 or 4 x 30kHz pulse train output (DC powered model only)

Specifications:

Input current:

5 V DC from the back plane bus, max. 30 mA

Energy loss:

Power Loss, type. 2 watts

Digital input:

Digital input number 8

8m / p-read yes

Input voltage:

• Kinds of Input voltage DC type
• Fpr Signal “0” for 0 to 5 V
• For Signal “1” for +15 to + 30V

Input current:

For the signal “1”, type. 4 mA

Input delay (to determine the value of input voltage)

Standard for standard input

– “0” to “1”, maximum 4.5 ms

The length of the wire

• shielded, maximum 500 m

unshielded, maximum 300 m

Encoder

Connective encoder:

• 2-wire sensor yes

-Contact approved word current (2-wire)

Sensor), max

1 mA

Potential separation:

Digital Potential separation Digital Input Yes; Optocopler

In The Channel, in 4 groups

Connection method:

Plug-in I / O terminal Yes

Dimensions:

• Width 46 mm
• Height 80mm
• Depth 62 mm

Weight:

• Weight, about 150 grams

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