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Instructions de service originales (18 pages)

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SIRIUS

Safety Relay

Operating Instructions

Read and understand these instructions before installing, operating, or maintai-

ning the equipment.

DANGER

Hazardous voltage.

Will cause death or serious injury.

Disconnect power before working on

equipment

The safety relay must be installed in switchgear cubicles complying with

degree of protection IP32, IP43 or IP54, depending on the prevailing environ-

mental conditions.

IMPORTANT NOTICE

The products described herein are designed to be components of a customized

machinery safety-oriented control system. A complete safety-oriented system

may include safety sensors, evaluators, actuators and signaling components. It

is the responsibility of each company to conduct its own evalution of the effecti-

veness of the safety system by trained individuals. SIEMENS AG, its subsidia-

ries and affiliates (collectively "SIEMENS") are not in a position to evaluate all

of the characteristics of a given system or product or machine not designed by

SIEMENS.

SIEMENS accepts no liability for any recommendation that may be implied or

stated herein. The warranty contained in the contract of sale by SIEMENS is the

sole warranty of SIEMENS. Any statements contained herein do not create new

warranties or modify existing ones.

Application

You can use the safety relays 3TK2821/24 in EMERGENCY STOP devices as per

EN 418 and in safety circuits as per VDE 0113 Part 1 (11.98) and/or EN 60 204-1

(11.98), e.g. with movable covers and guard doors.

Safety category 3 according to DIN EN 954-1 can be achieved by using this

device. Depending on the estimated risk, it may be necessary to carry out addi-

tional measures in the sensor circuit (e.g. shielded cable laying).

Functions and connections

Safety relay 3TK2821 has three release circuits (safety circuits) which are confi-

gured as NO circuits and a signal circuit configured as an NC circuit.

Safety relay 3TK2824 has two release (safe) circuits which are configured as NO

circuits. The number of release circuits can be increased by adding one or more

3TK2830 extension modules. Three LEDs indicate the operating state and

function.

When the EMERGENCY STOP button or the limit switch is unlocked and when

the ON button is pressed, the internal circuits of the safety relay and the exter-

nal contactors are checked for proper functioning.

Connect the EMERGENCY STOP pushbutton or the limit switch in the supply

cable from A1 to +24 or L24 V. To evaluate over two channels, connect Channel 2

from A2 to 0 V or N. Connect the ON button in series with the NC contacts of the

external contactor (feedback circuit) to terminals Y1 and Y2 (for circuit

examples, see Figs. IV to VII).

Terminal

Operating

voltage

assignments

Sensors

Y1, Y2

Outputs

13, 14

23, 24

33, 34

41, 42

Cable lengths

for 2 x 1.5 mm

Figures

Fig. I:

Dimension drawings (dimensions in mm)

Fig. II: Installation / Cage Clamp

Fig. III: Internal circuit: ¿ PTC fuse, À power pack,

Á control logic, Â Channel 1, Ã Channel 2

Fig. IV: EMERGENCY STOP, category 2 per EN 954-1**

Fig. V: EMERGENCY STOP, category 3 per EN 954-1

Fig. VI: Guard door monitoring, category 2 per EN 954-1**

Fig. VII: Guard door monitoring, category 3 per EN 954-1

**) This wiring example only satisfies category 2 according to EN 954-1 if a

warning is automatically generated when the actuator fails or the machine

control initiates a safe state. Otherwise an alternative shut-down method

is required.

L/+

–

ON button, feedback circuit

Release circuit 1 (NO)

Release circuit 2 (NO)

Release circuit 3 (NO)*

Signal circuit (NC)*

*) with 3TK2821 only

max. 1000 m (total cable length for

sensors and power supply lines)

Order No.: 3ZX1012-0TK28-1CA1

Operating states

LEDs

Operation

POWER Channel 1 Channel 2 PS

Faults

• Relay fusion-welded

• Motor contactor fusion-welded

• Defect in electronics

Cross or ground faults in

EMERGENCY STOP circuit (min.

fault current I

trips) or supply voltage missing

Technical data

Permissible ambient temperature T

Operation/storage

Degree of protection to EN 60 529

Rated insulation voltage U

Rated impulse withstand voltage U

imp

Rated control supply voltage U

Rated power

DC operating range

AC operating range

Shock resistance (half-sine) as per IEC 60068

Weight

Recovery time

Release time

Response time

Utilization

Rated operational

Ce manuel est également adapté pour:

Sirius 3tk2824