{"id":6537,"date":"2023-09-18T18:49:43","date_gmt":"2023-09-18T10:49:43","guid":{"rendered":"https:\/\/www.dcl-controls.com\/?p=6537"},"modified":"2025-03-28T10:33:47","modified_gmt":"2025-03-28T10:33:47","slug":"gb-t-3369-1-2008-iec-60381-1-1982","status":"publish","type":"post","link":"https:\/\/dclcontrols.com\/en\/support\/ts-actuator\/gb-t-3369-1-2008-iec-60381-1-1982","title":{"rendered":"Voltage Signal Standards for Electric Actuators \u2013 GB\/T 3369.2\u20142008\/IEC 60381-2:1978"},"content":{"rendered":"
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Applicable Standards for Electric Actuator Voltage Signals (1-5V, 2-10V, 0-5V, 0-10V):<\/h4>

Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals (GB\/T 3369.2\u20142008\/IEC 60381-2:1978)<\/strong>
IEC 60381-2-1978, IDT<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Preface<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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GB\/T 3369.2\u20142008\/IEC 60381-2:1978 – Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals<\/em><\/p>

The GB\/T 3369 standard consists of the following two parts:<\/p>

  • Part 1:<\/strong> Direct current (DC) signals<\/p><\/li>

  • Part 2:<\/strong> Direct voltage signals<\/p><\/li><\/ul>

    This document represents Part 2<\/strong> of GB\/T 3369.<\/p>

    It fully adopts IEC 60381-2:1978<\/strong>, Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals (English version).<\/em><\/p>

    According to GB\/T 1.1\u20142000<\/strong> (Standardization Work Guide \u2013 Part 1: Standard Structure and Writing Rules<\/em>), the following editorial modifications were made to IEC 60381-2:1978:
    a) The term “this standard”<\/strong> was changed to “this part.”<\/strong>
    b) The preface of IEC 60381-2:1978 was removed.
    c) Any reference to “IEC 60381”<\/strong> was replaced with “GB\/T 3369.”<\/strong>
    d) The decimal comma “,”<\/strong> was replaced with a decimal point “.”<\/strong><\/p>

    This part replaces GB\/T 3370\u20141989<\/strong> (Analog DC Voltage Signals for Industrial Automation Instruments<\/em>).<\/p>

    \u00a0<\/h3>

    Main Changes Compared to GB\/T 3370\u20141989:<\/h3>

    • The standard name was changed from “Analog DC Voltage Signals for Industrial Automation Instruments”<\/strong> to “Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals.”<\/strong><\/p><\/li>

    • The term “this standard”<\/strong> was replaced with “this part.”<\/strong><\/p><\/li>

    • Scope of Application:<\/strong><\/p>

      • GB\/T 3370\u20131989<\/strong> was based on IEC 60381-2:1979<\/strong> and applied to industrial automation instruments.<\/strong><\/p><\/li>

      • GB\/T 3369.2\u20142008<\/strong> is an equivalent adoption<\/strong> of IEC 60381-2:1979<\/strong> and applies to industrial process measurement and control systems.<\/strong><\/p><\/li><\/ul><\/li>

      • The term “industrial automation instruments”<\/strong> was changed to “components.”<\/strong><\/p><\/li>

      • The “ripple content”<\/strong> and “output AC component”<\/strong> definitions were removed, while new definitions were added for:<\/p>

        • “Measured value of an analogue direct voltage signal”<\/strong><\/p><\/li>

        • “Load impedance”<\/strong><\/p><\/li>

        • “Ripple content”<\/strong><\/p><\/li>

        • “Signal common”<\/strong><\/p><\/li>

        • “Signal isolation”<\/strong><\/p><\/li><\/ul><\/li>

        • Table 1 now includes signal ranges 0 to +10V<\/strong> and -10 to +10V.<\/strong><\/p><\/li><\/ul>

          \u00a0<\/h3>

          Responsible Organizations:<\/h3>

          • Proposed by:<\/strong> China Machinery Industry Federation<\/p><\/li>

          • Managed by:<\/strong> National Technical Committee on Industrial Process Measurement and Control Standardization (Second Subcommittee)<\/p><\/li>

          • Drafting Institutions:<\/strong> Southwest University, China Silian Instrument Group<\/p><\/li>

          • Participating Institutions:<\/strong><\/p>

            • China Machinery Industry Instrument and Economic Research Institute<\/p><\/li>

            • Beijing Institute of Automation of Machinery Industry<\/p><\/li><\/ul><\/li>

            • Main Drafting Personnel:<\/strong> Liu Feng, Pan Dongbo, Zhang Yu, Liu Jin<\/p><\/li>

            • Contributors:<\/strong> Feng Xiaosheng, Xie Bingbing<\/p><\/li><\/ul>

              This part replaces previous standards:<\/p>

              • GB 3370\u20141982<\/strong><\/p><\/li>

              • GB\/T 3370\u20141989<\/strong><\/p><\/li><\/ul>

                \u00a0<\/h2>

                Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals<\/strong><\/h2>

                \u00a0<\/h3>

                1. Scope<\/strong><\/h3>

                This part applies to analogue direct voltage signals<\/strong> used for information transmission between system components in industrial process measurement and control systems.<\/strong><\/p>

                Unlike the analogue direct current signals<\/strong> specified in GB\/T 3369.1-2008<\/strong>, analogue direct voltage signals<\/strong> should not<\/strong> be used for long-distance transmission.<\/strong><\/p>

                This part does not<\/strong> apply to signals used entirely within a single component.<\/strong><\/p>

                \u00a0<\/h3>

                2. Terms and Definitions<\/strong><\/h3>

                2.1 Components of Industrial Process Measurement and Control Systems<\/strong><\/h4>

                Functional units and integrated combination devices used to convert, transmit, or process measured values, control quantities, controlled variables, and reference variables.<\/strong><\/p>

                2.2 Analogue Direct Voltage Signal<\/strong><\/h4>

                A DC voltage signal<\/strong> that varies continuously based on one or more physical quantities, used for information transmission or processing.<\/strong><\/p>

                2.3 Measured Value of an Analogue Direct Voltage Signal<\/strong><\/h4>

                The average value<\/strong> of an analogue direct voltage signal over a specified duration.<\/strong><\/p>

                2.4 Lower Limit<\/strong><\/h4>

                The minimum<\/strong> voltage value of the analogue direct voltage signal.<\/p>

                2.5 Upper Limit<\/strong><\/h4>

                The maximum<\/strong> voltage value of the analogue direct voltage signal.<\/p>

                2.6 Range of an Analogue Direct Voltage Signal<\/strong><\/h4>

                The range defined by the lower limit<\/strong> and upper limit<\/strong> of the signal voltage.<\/p>

                2.7 Load Impedance<\/strong><\/h4>

                The total impedance of all connected receivers.<\/strong><\/p>

                2.8 Ripple Content<\/strong><\/h4>

                The ratio of the peak-to-peak value of the AC component<\/strong> to the upper limit<\/strong> of the analogue direct voltage signal.<\/p>

                2.9 Signal Common<\/strong><\/h4>

                A common electrical connection shared by multiple signal circuits, which may or may not be grounded.<\/p>

                2.10 Signal Isolation<\/strong><\/h4>

                The absence of electrical connections<\/strong> between the signal circuit<\/strong> and other circuits or the ground.<\/strong><\/p>

                \u00a0<\/h3>

                3. Technical Requirements<\/strong><\/h3>

                3.1 Range of Analogue Direct Voltage Signals<\/strong><\/h4>

                Table 1 provides the standard voltage signal ranges.<\/p>

                Lower Limit (V)<\/th>Upper Limit (V)<\/th><\/tr><\/thead>
                +1<\/td>+5<\/td><\/tr>
                0<\/td>+5<\/td><\/tr>
                0<\/td>+10<\/td><\/tr>
                -10<\/td>+10<\/td><\/tr><\/tbody><\/table><\/div>

                Notes:<\/strong><\/p>

                • Voltage signals can be derived<\/strong> from analogue direct current signals specified in GB\/T 3369.1\u20142008.<\/strong><\/p><\/li>

                • Voltage signals can<\/strong> represent physical quantities using bipolar characteristics.<\/strong><\/p><\/li><\/ul>

                  3.2 Ripple Content<\/strong><\/h4>

                  When using ripple-free DC power supplies<\/strong>, the following should be specified:<\/p>

                  • Ripple content and frequency<\/strong> within the system components.<\/p><\/li>

                  • Noise and frequency<\/strong> generated within the system components.<\/p><\/li>

                  • Ripple content caused by DC power supply ripple<\/strong> should also be specified.<\/p><\/li><\/ul>

                    3.3 Signal Common Line<\/strong><\/h4>

                    • For unipolar signals<\/strong>, the negative terminal<\/strong> serves as the signal common line. If connected to a DC power supply<\/strong>, it should connect to the negative terminal<\/strong> of the power supply.<\/p><\/li>

                    • For bipolar signals<\/strong>, the neutral terminal<\/strong> serves as the signal common line. If connected to a DC power supply<\/strong>, it should connect to the neutral terminal<\/strong> of the power supply.<\/p><\/li><\/ul>

                      3.4 Grounding<\/strong><\/h4>

                      • For unipolar signals<\/strong>, if the component is grounded<\/strong>, the negative terminal<\/strong> of the signal and\/or DC power supply should also be grounded.<\/p><\/li>

                      • For bipolar signals<\/strong>, if the component is grounded<\/strong>, the neutral terminal<\/strong> of the signal and\/or DC power supply should be grounded.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

                        Applicable Standards for Electric Actuator Voltage Signals (1-5V, 2-10V, 0-5V, 0-10V): Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals (GB\/T 3369.2\u20142008\/IEC 60381-2:1978)IEC 60381-2-1978, IDT Preface GB\/T 3369.2\u20142008\/IEC 60381-2:1978 – Analogue Signals for Process Control Systems \u2013 Part 2: Direct Voltage Signals The GB\/T 3369 standard consists of the following two parts: […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[3],"tags":[49],"class_list":["post-6537","post","type-post","status-publish","format-standard","hentry","category-ts-actuator","tag-input-signal"],"acf":[],"_links":{"self":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/posts\/6537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/comments?post=6537"}],"version-history":[{"count":0,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/posts\/6537\/revisions"}],"wp:attachment":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/media?parent=6537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/categories?post=6537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/tags?post=6537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}