秘鲁怎么读EN 61131-2:2007
Programmable
controllers —
reject
新视野大学英语读写教程第四册答案
perfect什么意思
dispatch
EN 61131-2:2007
-Cyclic damp heat withstand test (耐交变湿热试验)EN 61131-2:2007
Mechanical tests –Vibration (振动)
EN 61131-2:2007
Mechanical tests –Shock (冲击)EN 61131-2:2007
Mechanical tests -Free fall (自由跌落)
normal rvice conditions
transport and storage conditions上海东海职业学院
EN 61131-2:2007
Mechanical tests -Plugging/unplugging of removable units (可插/拔式单元的插/拔)EN 61131-2:2007
Verification of special functional requirements for power ports and memory back-up –Special immuni
ty limits for power ports (电源端口和后备存储器的特殊功能要求的验证–电源端口的特殊抗扰性限制)
-Verification of functional equipment power input port(装置电源输入端口的验证)
--Voltage range, voltage ripple and frequency range test (电压范围
电压范围、、电压纹波和频率范围试验)
EN 61131-2:2007
--Third harmonic immunity test(抗3次谐波试验)EN 61131-2:2007
--Shut-down test (sudden supply interruption)(停机试验)
T est description: during shut-down due to the supply interruption, the system behaviour shall be obrved. The test is repeated twice.
tc是什么意思Performance criteria: The requirement given above shall be met. In addition, from the start of interruption to shut-down, there shall be no change not caud by the normal test programme and no erratic or unintended condition of any kind.
-
-Start-up test (启动试验)
When the external supply is applied for a time specified by the manufacturer, the PLC-system shall start again according to the specifications of the manufacturer (automatic or manual
restart, initialization quence, etc.). During the start-up, there shall be no erratic or
unintended condition.
-External energy supply variation tests (immunity tests)(外部电源变化试验) At voltages below the minimum normal rvice conditions limits and/or frequencies beyond
the normal rvice condition limits, the PLC-system shall “either maintain normal operation or go to a predefined state and have a clearly specified behaviour until normal operation is
resumed”.
Performance criteria: during the tests, the PFVP (2.5) shall ensure that the behaviour of the
basic PLC-system is as specified by the manufacturer and that there is no change not caud by the PFVP test programme and no erratic or unintended conditions of any kind.
EN 61131-2:2007
--Gradual shut-down/start-up test(平缓停机/启动试验)EN 61131-2:2007
--Supply voltage variation tests(电源电压变化试验)
EN 61131-2:2007
--Voltage interruptions(电压中断)EN 61131-2:2007
-Improper equipment power supply connection tests(装置电源极性误接试验)
--Reversal power supply polarity test (withstand test)(耐直流电源极性反向试验) The rated voltage of rever polarity shall be applied for 10 s. The results shall comply with
the conditions stated by the manufacturer (such as fu-blowing).
After the test, the basic PLC-system shall pass the proper verification procedure (e 2.5).
Protective devices such as fus may be ret prior to verification.
--Improper voltage level and/or frequency test(不正确的电压电平和/或频率试验)
For voltage level above the maximum normal rvice conditions limit U e max or/and
frequencies beyond the normal rvice conditions limits F n max and F n min, the test
shall be agreed between the ur and the manufacturer.
EN 61131-2:2007
-Verification of memory back-up requirements (后备存储器要求的验证)--Back-up duration withstand test (存储器数据保存时间验证)
EN 61131-2:2007
-Verification of manufacturer‘s method of changing the energy source (制造厂更换电源方法的验证)
-Verification of other requirements (其他要求的验证)
The required warning of “low battery voltage” shall be checked (e requirements in 5.1.2).(The energy source shall be removed and the proper controlled voltage shall be applied in place of the energy source.)
EN 61131-2:2007
-Verification of input/output requirements (输入/输出要求的验证)--Verification of digital inputs (数字输入的验证)
Operating range test
It shall be verified that all requirements are met.
T est procedures: T o be agreed upon by the ur and manufacturer.Reversal of signal polarity test (withstand test)
T est procedure: A signal of rever polarity for digital inputs shall be applied for 10 s .
Verification: The results shall be as stated by the manufacturer. The device shall pass the PFVP (e 2.5). Protective devices such as fus may be ret prior to verification.Verification of other requirements
It shall be verified that the general requirements for digital I/Os under 5.2.1 and the requirement of 5.2.1.3are met.
冒险到
--Verification of digital outputs (数字输出的验证)
Operating range test
It shall be verified that all requirements are met.
T est procedures:
–Current range: T o be agreed upon by the ur and manufacturer.
–Voltage drop: T o be agreed upon by the ur and manufacturer.
–Leakage current: Devices/circuits intended for output protection shall not be removed.–T emporary overload: According to IEC 60947-5-1, (AC-15or DC-13, as applicable).
For short-circuit proof outputs, the current values shall be respectively 2 I e to 20 I e (as given in 5.2.2.2.3).
Each input channel shall be provided with a lamp or equivalent means to indicate the state 1condition when the indicator is energized.
Control of electromagnetic loads Control of electromagnets EN 61131-2:2007
Test of protected, not-protected, and short-circuit proof outputs (保护输出保护输出、、无保护输出和耐短路输出的试验)
EN 61131-2:2007
Reversal of signal polarity test (withstand test)
If the equipment is designed to prevent reversal of signal polarity, the withstand test may be not carried out and replaced by proper visual inspection.
T est procedure: A signal of rever polarity for utputs shall be applied for 10 s.Verification: The results shall be as stated by the manufacturer.
The device shall pass the PFVP (e 2.5). Protection devices such as fus may be ret prior to verification.
Verification of other requirements
Verify that general requirements for digital I/Os under 5.2.2 or 5.2.3 and the remaining requirements of 5.2.2.2 or 5.2.3.2 are met (output indicators and electromechanical relay outputs).
EN 61131-2:2007
--Verification of analogue I/Os (模拟输入/输出的验证)
Operating range tests
Verify that all requirements are met.
T est procedures: T o be agreed upon by the ur and manufacturer.
Analogue input overload withstand test
T est procedure: T o be agreed upon by the ur and manufacturer.Measurement and verification:
During loading: During the application of specified maximal overload, no physical damage or abnormal phenomenon shall be detected.
After the test: The accuracy shall be verified for the minimal and the maximal value of the input rang
e according to PFVP , e 2.5.
Short-circuit test (voltage output) and open-circuit test (current output)
When the short circuit (for a voltage output) or the open circuit (for a current output) is realized, no physical damage or abnormal phenomenon shall be detected. After the test,perform the PFVP of 2.5.
Voltage supply variation test
This test shall be performed when the analogue I/O modules are externally energized by an independent power supply (i.e. independent from the other I/O modules power supply(ies) of the PLC-system).
The power supply is replaced by a variable power source. The voltage is adjusted to the extreme values of the specified range of voltage supply . The module shall then pass the PFVP and the output variations shall be inside the specified range, e 2.5.
funky musicEN 61131-2:2007
Reversal of signal polarity test (withstand test)
If the equipment is designed to prevent confusion of signal polarity, the withstand test may not be carried out and replaced by proper visual inspection.
T est procedure: A signal of rever polarity for unipolar analogue inputs shall be applied for
10 s.
Verification: The results shall be as stated by the manufacturer. The device shall pass the
PFVP, e 2.5. Protection devices such as fus may be ret prior to verification.
Verification of other requirements
Type tests are not required; all requirements non-tested shall be verifiable under a procedure to be agreed upon by the manufacturer and the ur.
-Verification of communication interface requirements
Type tests are not required; all requirements non-tested shall be verifiable under a procedure to be agreed upon by the manufacturer and the ur.
-
Verification of MPU requirements
Type tests are not required; all requirements non-tested shall be verifiable under a procedure to be agreed upon by the manufacturer and the ur.EN 61131-2:2007
-Verification of remote I/O stations(远程输入输出站的验证)
--Respon time test
This test verifies the effect on transfer time(s) introduced to provide remote input information and RIOSs status to the application programme and to transmit its logical decisions to remote outputs.
Procedure: An application test programme consisting of copying input status to outputs is run in 4 similar configurations:
–local inputs to local outputs,
–remote inputs to local outputs,
–local inputs to remote outputs and
–remote inputs to remote outputs.
Pass/fail criteria: The total system respon times and the subquent variations of transfer time(s) shall conform to the manufacturer's published specifications.
--Loss of communication test
When communication is removed, outputs shall assume a manufacturer's specified state
within a manufacturer's specified interval without erratic or unintended behaviour, and the
communication error shall be signalled to the ur.
Procedure: The test is performed by disconnecting a) the link, b) the RIOS external power
supply, and obrving the behaviour of the basic PLC-system (i.e. of the MPU as well as of
the RIOS and of their outputs).
Pass/fail criteria: According to requirements.
--Verification of other requirements
Type tests are not required; all requirements non-tested shall be verifiable under a procedure to be agreed upon by the manufacturer and the ur.
EN 61131-2:2007
-Verification of peripheral (PADTs, TEs, HMIs) requirements
All requirements non-tested shall be verifiable under a procedure to be agreed upon by
the manufacturer and the ur.
-Verification of PLC-system lf-tests and diagnostics
All requirements non-tested shall be verifiable under a procedure to be agreed upon by
the manufacturer and the ur.
-Verification of markings and manufacturer's documentation
Verify the requirements of 5.1.1 by visual inspection.
Requirements of Clau7and 14 should be checked.
Cl. 9 Electromagnetic compatibility (EMC) type tests and verifications EN 61131-2:2007
Cl. 12 Safety type tests and verifications -Safety-related mechanical tests and verifications
--Impact withstand test (耐碰撞试验)
EN 61131-2:2007
--Operator accessibility tests(操作员可接触性试验)
This test is to determine whether protection against electric shock by means of inaccessibility is achieved. Enclod equipment, and ports identified as accessible in T able 46 are examples of items to be evaluated.
Unless obvious, determination of whether a part is operator-accessible shall be made as
specified in 12.1.3. The jointed test finger (Figure C.1) and test pin (Figure C.2) shall be
applied without force unless a force is specified. Parts are considered to be accessible if they can be touched with a jointed test finger or test pin, or if they could be touched in the abnce of any covering which is not considered to provide suitable insulation.EN 61131-2:2007
--General examination of openings (开口的一般性检查)
The jointed test finger (Figure C.1) shall be applied in every possible position. Where a part
could become accessible by applying a force, the jointed test finger, made rigid, shall be
applied with a force of 10 N. The test shall be applied to all outer surfaces, including the bottom.
The test pin (Figure C.3) shall be inrted in any openings above parts, which are hazardous
live. The test pin shall be suspended freely and allowed to penetrate up to 100 mm. The
additional safety measures of 11.2.5 for protection in single-fault condition are not required
solely becau a part is accessible by this test only.
drenchThe test pin (Figure C.4) shall be inrted through holes intended to give access to pre-t
controls which require the u of a screwdriver or other tool. The test pin shall be applied in
every possible direction through the hole. Penetration shall not exceed 3 times the distance
from the enclosure surface to the control shaft or 100 mm, whichever is smaller.
