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9260224.book Seite 1 Montag, 3. Juni 2002 11:04 11

Safety Combination

Instructions

WARNING:

HAZARDOUS VOLTAGE

CAN CAUSE ELECTRICAL SHOCK

AND BURNS.

DISCONNECT POWER BEFORE PROCEEDING

WITH ANY WORK ON THIS EQUIPMENT.

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. ABB AG, its subsidiaries and

affiliates (collectively "ABB") are not in a position to evaluate all of the charac-

teristics of a given machine or product or machine not designed by ABB.

ABB accepts no liability for any recommendation that may be implied or stated

herein. The warranty contained in the contract of sale by ABB is the sole war-

ranty of ABB. Any statements contained herein do not create new warranties or

modify existing ones.

Application

You can use the safety combination C571-AC 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 (12.97), e.g. with movable covers and guard doors. Depending on

the external connections, safety categories 3 and 4 as per DIN EN 954-1 are

achievable.

When the safety combination is used in "Automatischer Start" mode, automatic

restarting (as per EN 60 204-1, Sections 9.2.5.4.2 and 10.8.3) must be prevented

by the higher-level control system in the event of EMERGENCY STOP.

Functions and connections

The Safety combination C571-AC has two release (safe) circuits which are confi-

gured as NO circuits. The number of release circuits can be increased by adding

one or more C579 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 combination and the

external contactors are checked for proper functioning.

Connect the EMERGENCY STOP button or the limit switch to terminals Y11, 12

and Y21, 22. The ON button is connected in series with the NC contacts of the

external contactor (feedback circuit) at terminals Y33, 34.

Terminal

Operating

assignments

voltage

Sensors

Y11, 12

Channel 1 EMERGENCY STOP or limit switch

Y21, 22

Channel 2 EMERGENCY STOP or limit switch

Y33, 34

ON button, feedback circuit

Outputs

13, 14

Release circuit 1 (NO)

23, 24

Release circuit 2 (NO)

Cable lengths

for 2 x 1.5 mm

150 nF/km

Figures

Fig. I:

Dimension drawings (dimensions in mm)

Fig. II:

Installation / Cage Clamp

Fig. III:

Internal circuit: ¿ power pack, À control logic,

Á Channel 1, Â Channel 2

Fig. IV:

Two-channel autostart for contactor monitoring,

safety category 3 and 4 per EN 954-1

Order No.: 1SAC 105 198 S4001

Figures

Operating states

Fault

clearance

Technical data

Permissible ambient temperature T

Operation/storage

Degree of protection to EN 60 529

Rated insulation voltage U

Rated impulse withstand voltage U

Rated control supply voltage U

Rated power

Operating range

Shock resistance (half-sine) as per IEC 60068

Weight

Recovery time after EMERGENCY STOP

Release time after EMERGENCY STOP

Response time

Utilization