Technical data
SIMATIC S7-1200, digital input SM 1221,8 DI, 24V DC, perfusion current/pull current
General information
Product Type Label SM 1221, DI 8x24 VDC
Supply voltage
Rating (DC) 24 V
Allowable range, lower limit (DC) 20.4V
The upper limit (DC) is 28.8V
Input current
From the backplane bus DC 5 V, maximum 105 mA
Digital input terminal
● From the load voltage L+ (no load), maximum 4 mA; Each channel
Output voltage/heading
Measure the supply voltage/title of the converter
● Product function/measurement inverter power supply voltage is
Power loss
Power loss, typical value 1.5 W
Digital input
Number of input terminals 8
● In the component 2
Input characteristics comply with IEC 61131, type 1 is
The number of inputs that can be controlled simultaneously
All mounting positions
- The maximum value is 40 ℃ and the maximum value is 8 ℃
Horizontal mounting position
- The maximum value is 40 ℃ and the maximum value is 8 ℃
- The maximum value is 50 ℃ and the maximum value is 8 ℃
Vertical mounting position
- The maximum value is 40 ℃ and the maximum value is 8 ℃
Input voltage
● Rating (DC) 24 V
● DC 5 V for signal "0" 1 mA
● For signal "1" 15 V DC, when is 2.5 mA
Input current
● For signal "0", maximum (allowed closed circuit current) 1 mA
● For signal "1", minimum value 2.5mA
● For signal "1", the typical value is 4 mA
Input delay (when input voltage is rated)
For standard input
- Parameterizable Yes; You can choose from four groups: 0.2ms, 0.4ms, 0.8ms, 1.6ms, 3.2ms, 6.4ms and 12.8ms
For alarm input
- Parameterizable Yes
Conductor length
● Shielding, maximum 500 m
● Unshielded, maximum 300 m
Alarm/diagnosis/status information
alarm
● Diagnostic alarm Yes
Diagnostic display LED
● For input side status is
Potential isolation
Digital input potential isolation
● Between channels, group the number of points 2
Protection level and protection category
Protection level IP Address IP20
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a one-stop integrated service provider of intelligent manufacturing, belongs to the Gong Doctor Group, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1). Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3). At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
010-64225983
+8613811814778
info@zhongpingtech.com
Building 26, Liyuan Community, Chaoyang District, Beijing, China
