Electricity and Control September 2022

DRIVES, MOTORS + SWITCHGEAR

ply a control signal to an adjustable fixed speed. The motor can then be immediately set to work. Settings can be adapted to the relevant application via the user-friendly settings concept made up of a dis play, five LEDs, two up and down buttons, a set/reset button, and a rotary switch. The first step is to set the nominal current of the motor in order to protect the motor against over load. This means it is no longer necessary to install

The intuitive operator interface of the speed starter.

Plug-in connection to the three phases The speed starters in the Contactron product family can be easily mounted on the CrossPowerSystem for power distribution by means of plug and play. First, the three phases are connected to the power distribution board via a connection module or a disconnector with integrated fuses. The 5 A or 20 A version of the TRIO POWER power supply is then used for the 24 V feed-in, while PTFIX ter minals or terminal blocks are used for distribution in the control cabinet or field. The compact hybrid motor starters start, reverse, and protect motors safely and reliably, and can be networked if required. If a soft start or different speeds are also re quired, the speed starter can be easily installed on the power distribution board using an adapter. The intuitive device thus also provides quick, plug-in connection to all three phases. This enables quicker implementation of modular, functional control cabinets. Different versions for different requirements If the rotary switch is set to ‘Status’, electrical values such as frequency, current, voltage, temperature, and other data can be read. If the speed needs to be adjusted, this too can be done in the same way as previously described. The rotary switch is set to the ‘Speed1’ position, adjusted to the correct frequency value again using the up or down button, and confirmed by pressing the set/reset button. The direc an additional motor protection relay. The rotary switch is simply turned to the ‘Current’ position and the correspond ing value is entered using the up or down button, and then saved by pressing the set/reset button. And that’s it. As soon as the user changes a value, it starts flashing in the display. Once saved, the value is permanently displayed. The ramp time, that is, the time until the motor is running at the set speed, can also be easily adapted. To do this, the user turns the rotary switch to the ‘Ramp’ position and, as previously described, enters the new value using the same sequence of steps.

The speed starter is available in different housings.

tion of rotation – ‘R’ or ‘L’ – flashes in the LEDs, and this can also be specified in the settings. If a second speed is required, the procedure is repeated. Additional settings can be saved by turning the rotary switch to the ‘Options’ position. The speed starters are available in a performance class ranging from 0.25 to 1.5 kW – for a single-phase and three phase load input, with or without integrated EMC filter. The devices with a built-in filter include a plug-in, replaceable fan, and the devices without a filter are equipped with a heatsink without fan The speed starters offer an easy-to-use solution suita ble for a range of applications. Users benefit from a de vice class that is positioned between motor starters and frequency converters. □

For more information visit: www.phoenixcontact.com

The CrossPowerSystem power distribution system includes a range of components for modular and functional control cabinets.

SEPTEMBER 2022 Electricity + Control

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