1771-NC6/AB IN STOCK& READY FOR SHIP

Contact: Miya

Job Title: Sales Manager

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Email: sales@amikon.cn

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Brand Name                 AB

Product reference      1771-NC6

Each module in the I/O chassis including the processor or adapter module draws power from the I/O (chassis) power supply. Some modules require an additional power source. I/O Power Supply Power is supplied through the I/O chassis backplane from the 5V DC I/O power supply. The stepper controller draws all of its power (1.75A, maximum) from the I/O power supply. Each pulse output expander module requires a current of 0.80A maximum. These amounts (4.15A maximum for a 3-axis system) should be totalled with the current requirements of all other modules in the chassis so as not to exceed the maximum output current of the I/O chassis power supply. Auxiliary Power Supply Pulse output expander modules require an additional power source for switch inputs to the module and for pulse outputs to the stepper translator and motor. The power source can be separate input and output power supplies for one, two or three axes, a combined power source for each axis, or a combined power source for up to three axes. Each input switch draws 11mA maximum when closed. The maximum output current for the pulse output expander module is 100mA. Refer to section titled “Module Specifications” for additional information concerning the auxiliary power supply requirements. The supply voltage can be any value chosen from 5V DC to 30V DC required by the user-selected stepper translator and/or the switch input circuits. The variation in the DC voltage level due to ripple should not exceed the input specification for the stepper translator because the supply voltage ripple appears at the output terminals of the pulse output expander module. Power supplies with 15mV peak-to-peak ripple can be used. However, check the translator input specification to ensure that the power supply specifications meet translator input requirements. The supply may require input filtering to guard against electrical noise. The Allen-Bradley Power Supply (cat. no. 1770-P1) is recommended when the stepper translator requires 300mA or less current.

Stepper Translator and Power Supply The stepper translator and power supply convert digital information from the pulse output expander module into the proper voltage and current for the precise control of a stepper motor. For compatibility with the pulse output expander module, the translator must accept low true logic. The programmed maximum pulse rate from the pulse output expander module to the translator can be any value up to 20,000 pulses per second. Stepper Motor The stepper motor converts electrical pulses into mechanical movements. The motor shaft rotates through a specific angular rotation for each pulse. The movement is repeated precisely with each pulse and the shaft rotates in fixed, repeatable increments. When a threaded shaft is used to drive a linear slide, the velocity, distance and direction of the slide can be precisely controlled. The stepper motor, stepper translator and translator power supply should be grounded to guard against electrical noise interference in accordance with the manufacturer’s specifications and guidelines. Improper grounding can result in unwanted extra pulses occurring at the stepper translator and/or stepper motor.

Prior to installation, a pulse output expander module must be configured to correctly interface with the corresponding stepper translator. Adjustments are made using six switch assemblies. The functions of the switches are summarized in Table 2.A and described in subsequent paragraphs. Module Disassembly The switch assemblies are located on the module printed circuit board. They are accessed by removing the module clean up as follows: 1. Remove the four screws from the upper and lower edges of the labeled cover. 2. Remove the printed circuit board from the covers and set it solder-side down.

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6ES7413-1XG01-0AB0  SIMATIC S7-400, CPU 413-1
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ABB

CP1-10R-11
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