G122-829A-001 G122-824-002 导出伺服放大器

螺钉端子建议使用卷曲的“boot lace ferrules”。允许足够的电缆长度，以便电路卡可以从其外壳中取出，电线仍然连接。这使得电路卡上的开关改变可以在卡仍然连接和运行时进行。额外的100mm，用于连接到外壳外的电缆。以及连接相邻DlN铁路单元的电线，是足够的。
螺钉端子将容纳电线尺寸从0.2mm2到2.5mm2 (24AWG到12AWG)。1安培额定，0.2mm应足以适用于所有应用。

3.4电磁兼容
G122-829A001发出的辐射远低于其CE标志测试要求的水平。因此，不需要特别的预防措施来抑制排放。然而，对外部干扰辐射的免疫依赖于仔细的布线技术。公认的方法是在所有连接中使用屏蔽电缆，并在进入工业钢外壳的点上，在适当的接地电缆压盖中径向终止电缆屏蔽。如果不可能，则在g122 – 829a001上提供机箱接地螺钉端子。暴露的电线应保持在最小长度。将电缆两端的屏幕连接到机箱接地。
4电源
24V直流标称，22至28V75mA @ 24V无负载，200mA @ 100mA负载。
如果使用无调节电源，纹波波形的底部不低于22V
建议将符合lEc127-2表3的m205,250ma T(慢熔)保险丝与+24V输入串联，以保护电子电路。如果端子23用来给比例阀供电，保险丝应该增加以适应额外的电流。

6输入配置
输入1、2和反馈进入误差放大器，可用于反馈或命令。在选择信号极性时需要小心，以实现整个闭环的负反馈。由于输入误差放大器对信号求和，换能器反馈信号需要与命令的极性相反。这可以通过两种方式实现:
为相反极性反馈换能器信号设置范围，并将其连接到输入1、输入2或正反馈放大器输入。
如果反馈换能器信号与命令的极性相同，您只有一个选择:将其连接到反馈放大器的负输入。
6.1反馈输入
误差放大器的输入:反馈放大器是反馈信号的最佳选择，原因有六个:mIt使输入1可用于命令。参见下文6.2。mIt有逆变(负)和非逆变(正)输入。mIt有零和增益调节器。这使得一个信号不会达到零伏特，并且具有比命令更小的跨度，可以按比例放大到命令。虽然这不是必需的，但它在设置和故障排除时很有帮助。有一个前面板测试点，用于调零和放大信号。这对于设置和排除故障非常方便(必要)。
可以选择插入式电阻R16，在反馈放大器的输出中提供反馈导数(引线或D)。
通过在端子17和18之间连接一个240欧姆电阻和4-20mAswitch ([Sw1:4])，可以设置mIt为电流输入。

G122-829-001

The use of crimp “boot lace ferrules” is recommended for thescrew terminals. Allow sufficient cable length so the circuitcard can be withdrawn from its case with the wires stillconnected. This enables switch changes on the circuit cardto be made while the card is still connected and operatingAn extra 100mm, for cables going outside the enclosure.as well as wires connecting to adjacent DlN rail units,is adequate.
The screw terminals will accommodate wire sizes from0.2mm2 to 2.5mm2 (24AWG to 12AWG). One Amp rated,0.2mmshould be adequate for all applications.

3.4 EMC
The G122-829A001 emits radiation well below the level calledfor in its CE mark test. Therefore, no special precautions arereguired for suppression of emissions. However, immunity fromexternal interfering radiation is dependent on careful wiringtechniques. The accepted method is to use screened cables forall connections and to radially terminate the cable screens, inan appropriate grounded cable gland, at the point of entry intothe industrial steel enclosure. lf this is not possible, chassisground screw terminals are provided on the G122-829A001Exposed wires should be kept to a minimum length. Connectthe screens at both ends of the cable to chassis ground.
4 Power supply
24V DC nominal, 22 to 28V75mA @ 24V without a load, 200mA @ 100mA load.
If an unregulated supply is used the bottom of the ripplewaveform is not to fall below 22V
It is recommended that an M205, 250mA T (slow blow) fuse.compliant with lEc127-2 sheet 3, be placed in series with the+24V input to protect the electronic circuit. lf terminal 23 isused to power a proportional valve, the fuse should beincreased to cater for the extra current.

6 input configuration
Inputs 1, 2 and feedback go to the error amplifier and can beused for feedback or command. care needs to be taken inselecting signal polarity to achieve negative feedback forthe overall closed loop. Since the input error amplifier sumsthe signals, the transducer feedback signal needs to be theopposite polarity of the command. This can be achieved intwo ways:
mArrange for an opposite polarity feedback transducer signaland connect it to input 1, input 2 or the positive feedbackamplifier input.
mlf the feedback transducer signal is the same polarity as thecommand, you only have one option: Connect it to thenegative input of the feedback amplifier.
6.1 Feedback input
An input to the error amplifier: The feedback amplifier is thebest choice for the feedback signal, for six reasons:mIt leaves input 1 available for command. See 6.2 below.mIt has inverting (negative) and non-inverting (positive) inputs.mIt has zero and gain adjustment pots. This enables a signalthat does not go to zero volts and has less span than thecommand, to be scaled up to the command. While this isnot essential, it helps when setting up and trouble-shooting.There is a front panel test point for the zeroed and amplifiedsignal. This is very convenient (essential) for setting up andtrouble-shooting.
There is the option of a plug-in resistor, R16, to give afeedback derivative (lead or D) in the output of the feedbackamplifier.
mIt can be set up for a current input by connecting a 240 Ohmresistor between terminals 17 and 18 with the 4-20mAswitch ([Sw1:4]).