Internal Dc 24 V Supply, Stop Category 1 - BONFIGLIOLI ACTIVE CUBE Series Applications Manual

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Complement to operating instructions (32 pages)

Table Of Contents

Table of Contents

8.5

The application example shows the minimum circuitry for ACTIVE cube frequency

inverters for realization of the safety function STO "Safe Torque Off" with an emer-

gency stop switch in a common electrical cabinet. Supply of the safety control device

is effected by the internal DC 24 V supply (max. 180 mA).

When the emergency stop switch is actuated, the travel command "Clockwise" is

reset first. After a delay t

paths STOA and STOB of the ACTIVE Cube frequency inverter and the integrated

safety function is activated. The delay time is set on the safety control device and

must be selected according to the application. The delay time is set on the safety

control device and must be selected according to the application. The set delay time

has to be higher than the shut down time.

A (non-safe) feedback to a process controller can be effected, for example, via a

connected field bus. If STO is requested, the overriding controller has no more influ-

ence on the pulse block in the frequency inverter.

opened

closed

Acknowledgment

STOA: first shutdown path of the safety function STO

STOB: second shutdown path of the safety function STO

X210A, X210B, X10: Control terminals of the frequency inverter

X310: Interface of communication module

+E20V: DC 20 V voltage output or input for an external DC 24 V voltage supply

Terminal X210A.2 : Earth 20 V/ Earth 24 V (ext.)

S1IND ... S7IND: Digital inputs

S1OUTD: Digital output

MFO1: Multi-function output (analog/digital, frequency signal)

10VRef: Reference voltage DC 10 V

MFI1: Multi-function input (analog/digital)

Terminal 210B.7: Earth 10 V

X10: Relay output

Position switch displayed actuated

t : time delay between signaling contact and shutdown contact