Afag SE-Power FS FSM 2.0 STO Breve descrição - Página 2

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2.4 Application and Approvals

The servo controller with integrated safety module is a safety component ac-

cording to the Machinery Directive, the servo controller is provided with the CE

mark. Standards and test that the product complies with and satisfies, see the

section "Technical Data" ( section 12). Please see the declaration of incorpo-

ration for the product relevant EC Directives.

Product Description

3.1 Supported Devices

The SE-Power FS STO safety modules can only be used in servo controllers in

accordance with section 1.2.

The servo controller of the SE-Power FS series are in the default factory settings

already with the SE Power FS STO safety modules with integrated functional

safety function STO (Safe Torque Off) equipped.

3.2 Operating elements and connections

The SE-Power FS Safety Module STO has the following controls, connectors and

indicators:

1 servo controller SE-Power FS with

slot for Functional Safety Modules

2 Digital I / O interface [X40] to con-

trol the STO function

3 Pin 1 on the socket [X40]

Figure 1: Panel and connectors of the SE-Power FS Safety Module STO

Function and application

The SE-Power FS Safety Module STO has the following features:



reaching the function "Safe Torque Off" (STO),



Floating feedback contact,



Designed as plug-in module from the outside,



Only suitable for servo controllers of the product family SE-Power FS.

4.1 Description of the safety function

With active safety function STO "Safe Torque Off" the power supply of the drive is

interrupted for safe. The drive can't generate torque and thus no dangerous

movements. There is no monitoring of the standstill position.

The shutdown of the machine must be initiated and ensured safety-related, eg via

a safety relay. This applies especially for vertical axes without self-locking

mechanism, locking unit or counterbalance.

Note

There is a risk of jerky movements when multiple faults in the SE Power FS.

If, during state STO the power stage of the servo state fails (simultaneous short

circuit of two power semiconductors in different phases), there may be a limited

stop-motion of the rotor. The Angle / Stroke correspond to a pole pitch. Examples:

 Rotary axis, synchronous machine, 8-pole  Motion  45° at the motor shaft.

 Linear motor, poles pitch 20 mm  Motion  20 mm at the moving part.

4.2 Control inputs STO-A, 0V_A / STO-B, 0V_B [X40]

The STO safety function is requested solely by disconnecting the control voltage

(0 V) to the two digital control inputs STO-A and STO-B. A fail-safe wiring of other

interfaces on the base unit SE-Power FS is not required or provided.

 A cross-circuit detection of the input circuit is not performed by the safety

module.

According to the specification of the safety function, the voltage level at both

STO-A/B must be identical, otherwise an error message is generated. The driver

supply voltage is internally monitored by the state machine in the servo controller

as a result of actuation of the control inputs. Changing the level of both inputs

must be within the discrepancy time (default: 100 ms), otherwise an error mes-

sage is generated.

Recommendation: Switch STO-A and STO-B is always simultaneously.

Transient test pulses of safety controls are tolerated and don't lead to the re-

quirement of the STO function.

short description „SE-Power FS Safety Module FSM 2.0 STO"

4 LED for indicating the operating

status (Status of functional safety)

5 DIP switches (activation / config-

uration of the fieldbus communi-

cation in the servo controller)

4.3 Feedback contact C1, C2 [X40]

A floating feedback contact (NO) reports the state of the servo controller to an

external safety switching device back.

 The feedback contact is implemented through one channel and may be used

for diagnostic purposes, but not in safety circuit.

Assembly / Disassembly

The SE-Power FS Safety Module STO is only suitable for integration into the

servo controller SE-Power FS. It can't be operated outside of the servo controller.

The servo controller must be disconnected from any live cables before the as-

sembly and disassembly of the safety module.

Caution

Risk of electric shock when the safety module is not

mounted.

Touching live parts causes serious injury and can lead to death.

Against contact with live parts during maintenance, repair and cleaning work as

well as long periods of discontinued:

1. Switch off the electrical equipment with the main switch and secure against

restarting.

2. Wait at least 5 minutes off discharge after switching off and check that the

power is off before accessing the servo controller.

Note

Damage to the safety module or the servo controller by improper handling.

 Switch off supply voltages before mounting and installation work. Do not switch

on supply voltages, where assembly and installation work has been com-

pleted.

 Never pull off or plug the module when the servo controller is energised!

 Observe the regulations for handling electrostatic sensitive devices. Do not

touch the circuit board and the pins of the terminal strip on the servo controller.

Access the safety module only on the front panel or on the board edge.

Assembly the safety module

Insert the SE-Power FS Safety

Module STO into the empty slot for

Functional Safety modules so that

the board is in the lateral guides of

the slot runs.

Insert safety module, when reach-

ing the rear connector strip within of

the servo controller press careful

until it stops at the edge connector.

Finally, tighten safety module with

the two screws on the front side of

the housing of the servo controller.

Tighten the screws to 0.35 Nm.

Disassembly the safety module

Unscrew the screws on the safety module.

Solve security module slightly levers on the front panel or by pulling the

plug counter by a few millimetres.

Pull-out the security module from the slot.

Electrical Installation

6.1 Safety notes

For installation, the requirements of EN 60204-1 must be met.

Caution

Risk of electric shock from voltage sources without protec-

tive measures.

 Use for electrical logic supply exclusively PELV circuits according to EN

60204-1 (Protective Extra-Low Voltage, PELV).

Consider also the general requirements for PELV circuits in accordance with

EN 60204-1.

 Use only power supplies which ensure a reliable electrical isolation of the

operating voltage according to EN 60204-1.

- 2 -

Figure 2:

Assembly / Disassembly

Version 1.5