Rm-materials-handling VARIABLE SPEED CONTROLS ControlMaster NXT Service Manual de usuario descargar pdf (Pagina 29)

R&M Materials Handling, Inc.

4501 Gateway Boulevard

Springfield, Ohio 45502

P.: (937) 328-5100

FAX: (937) 325

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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.

5.2.8 S4 Control method and slowdown mode in traveling movement application

The frequency converter can be parametrised for two different control methods. The control method options are

listed in the following table. The descriptions of the control methods are given in the section “Control methods”.

Digital inputs and the control method:

Terminal

Name MS2 EP2

DI1 S1 S1

DI2 S2 S2

DI3 MS2 AP

DI4 S11/S21 S11/S21

DI5 *) S12/S22 S12/S22

DI6 ES ES

*) Note: As factory default DI5 is not in use. The stop limit signal shall be connected in series to direction signals

respectively.

Control signals:

S1 Drive command forward

S2 Drive command reverse

MS2 Multistep 2 frequency

AP Acceleration command

S11 Slowdown limit forward

S12 Stop limit forward

S21 Slowdown limit reverse

S22 Stop limit reverse

ES External stop, used for thermal protection of the motor

Switch S4 - 1 Control method

0 EP2

1 MS2

The switch model has one slowdown input DI4. There are two ways to handle the slowdown command and the

selection is made with switch S4-2. Alternatives are shown in the following table. As the slowdown limit switch

contact opens during running, the maximum speed is limited in the running direction.

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Rm-materials-handling VARIABLE SPEED CONTROLS ControlMaster NXT Service Manual de usuario Pagina 29