Multi-turn electric actuator is used to drive gate valves and other multi-turn rotation of the regulating valve.
I. Product Overview
(A) it is an intelligent control system.
SD Series Intelligent Motor implementing agencies, under the premise of full E took the advanced technology of similar products at home and abroad, according to China's industrial control system characteristics, use of modern microcontroller technology to function entirely by the reliability of the PIC-16C711 microcontroller as the core to complete the control various functions by the "software" program.
(B) it is a fully functional control system.
A broken signal protection functions ---- When the input signal is less than 2mA, as a broken signal, at this time the output shaft by the user preset state action. The presets are three types: a, in situ, b, full, and c, fully closed.
2, overcurrent protection ---- When executing agency overcurrent control circuit of the machine automatically shut down, the implementing agency remains in situ, in order to protect the executive body and the valve
3, the dynamic electric brake - when the motor running to a given value = feedback value, due to the operation of inertia idler go make the output shaft oscillation. A dynamic electric braking command is issued by the "software" program (ie, given an instantaneous reverse current) so that the sweep line to stop immediately, no idler walk oscillation, which greatly improved the reliability of the automatic control system and stability.
4, upper limit and lower limit functions - according to site needs, rotary in the range of 90 degrees, based within the scope of the rated travel, and lower limits at both ends limit arbitrarily adjustable, adjustable range of about 40%. Factory, the lower limit is set to 4mA, the upper limit set to 20mA.
(C) it is a high reliability and stability control system.
The choice of PIC MCU and its powerful, high reliability. It combines the central controller, RAM, ROM, and the I / O port in one. Due to the elimination of the external lead, interference effects may be almost zero. Willing to have a compact structure, with fewer components, small size, easy to adjust, low failure rate, high stability compared with the conventional circuit of similar products. Another due to the single-chip single-byte instruction, eliminating the confusion of the opcode and operand, to further improve stability. Otherwise, the program is on the software design increased burnt in ROM and "watchdogs" (this watchdog circuit within the microcontroller to work independently, free from the clock, the circuit affect) virtually eliminating the microcontroller "crash "Therefore, this system is very reliable system. The SD series intelligent electric implementing agencies is the advanced model with the level of the 1990s, the upgrading of products for traditional products.
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型 号 |
额定负载
Nm |
额定速度
r/min |
额定行程
r |
|
单相220V |
三相380V |
|
B-25/K02 |
|
250 |
2.3 |
3,5,7.5,11.5,17.5 |
|
B-25/K04 |
B-25/F04 |
250 |
4.4 |
5,7.5,11.5,17.5 |
|
|
B-25/F07 |
250 |
7 |
3.5,15,22.5,34.5,50 |
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A- |
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机座代号 |
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B- |
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机座代号 |
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C- |
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机座代号 |
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□ |
/ |
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最大输出力矩，数字表示，单位：10Nm |
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K |
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电源代号：单相220V/50Hz |
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F |
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电源代号：三相380V/50Hz |
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□□ |
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输出轴转速，数字表示，单位；r/mm |
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□□ |
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额定行程数，数字表示，单位：r.(圈) |
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L |
控
制
特
性 |
两位式（开关型）开关量输入 |
|
无符号 |
整体比例调节型4-20mA输入 |
|
S |
分立比例调节型4-20mA输入 |
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Y |
远控型（积分型）开关量输入 |
The following technical performance refers to the proportional control type on far to control the type and switch type the following 1,2,3,4,5,6,11,12,13,14 not involve.
1, the input signal: 4mA-20mA DC or 1V-5V DC;
2, input channel resistance; 250Ω;
3, the number of input channels: 1 (discrete 3);
4, the basic error: ± 1, ± 2.5%;
Hysteresis: 1%, 1.5%;
6, 0.5 - 3% of the dead zone (can be set according to system requirements);
7, the damping characteristics: no swing
8, the power supply voltage: single phase 220V (+10%, -15%) 50Hz ± 1%
Three-phase 380V ± 10% 50Hz ± 1%
9, the working environment: Temperature: overall -10 - +55 ° C; discrete -25 - +70 ° C; humidity: ≤ 85%, the ambient air does not contain corrosive substances;
10, Protection class of enclosure; meet GB4208 IP65 (ie, rain and dust);
11, off the signal protection: preset are three types: a, in situ, b, full, and c, fully closed;
12, over-current protection: the different types of models to protect the current value adjustable; (mechanical parts of the torque protection switch)
13, the dynamic electric brake;
14, upper and lower limit functions: in the range of rated travel, adjustable range of the upper and lower limits in about 40%; (mechanical parts of the stroke control switch and a mechanical limit)
15, working; reversible intermittent working, connected to a sustained rate of 50% per hour connected to the number 1200.
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