SCR-7 Correct Use The SCR-7 is a universal emergency stop safety switching device with seven safe relay outputs that can quickly and safely stop the moving parts of a machine or system in case of danger. Applications for the SCR-7 include single or dual-channel emergency stop circuits and guard monitoring on machines and systems. This safety relay can be delivered with fixed screw terminals or plug-in terminals. Features • 7 safe, redundant relay outputs • 4 auxiliary relay outputs; 2 auxiliary transistor outputs • Connection of: - Emergency stop buttons - Safety switches - Non-contact safety switches - OSSD-Outputs • Single or dual-channel operation possible • Feedback loop for monitoring downstream contactors or expansion modules • Cyclical monitoring of the output contacts • Indication of the swiching state via LED 2 start behavior possible: - Monitored manual start - Automatic start Up to PL e, SILCL 3, category 4 STOP-category: 0 Function The emergency stop safety switching device SCR-7 is designed for safe isolation of safety circuits according to EN 60204-1 and can be used up to safety category 4, PL e according to EN ISO 13849-1. The internal logical system closes the safety contacts when the start button is pressed. If the safety switch is opened, the positively driven safety contacts are opened and safely switch the machine off. It is ensured that a single fault does not lead to a loss of the safety function and that every fault is detected by cyclical self-monitoring no later than when the system is switched off and switched on again. The operating status of the device is indicate by the auxiliary transistor outputs O1 and O2. O1: Ready. PWR is connected. O2: Both relay channel K1, K2 are switched on. Installation As per EN 60204-1, the device is intended for installation in control cabinets with a minimum degree of protection of IP54. It is mounted on a 35-mm DIN rail according to DIN EN 60715 TH35. Safety Precautions • Installation and commissioning of the device must be performed only by authorized personnel. • Observe the country-specific regulations when installing the device. • The electrical connection of the device is only allowed to be made with the device isolated. • The wiring of the device must comply with the instructions in this user information, otherwise there is a risk that the safety function will be lost. • It is not allowed to open the device, tamper with the device or bypass the safety devices. • All relevant safety regulations and standards are to be observed. • The overall concept of the control system in which the device is incorporated must be validated by the user. • Failure to observe the safety regulations can result in death, serious injury and serious damage. Electrical Connection A safety transformer according to IEC 61558-2-6 or a power supply unit with electrical isolation from the mains must be connected. External fusing of the safety contacts (10 A gG) must be provided. A maximum length of the control lines of 1000 meters with a line cross section of 0.75 mm2 must not be exceeded. The line cross section must not exceed 2.5 mm2. If the device does not function after commissioning, it must be returned to the manufacturer unopened. Opening the device will void the warranty. S11: DC 24V control voltage S21: Start, Control line 01;O2: Aux transistor outputs 81 -82: A uxiliary Contact 91 -92: A uxiliary Contact

Safety Relays from IDEM User Information Applications Depending on the application or the result of the risk assessment according to EN ISO 13849-1, the device must be wired as shown in Fig. 1 to Fig. 11. Emergency Stop Circuit Two-channel emergency stop circuit with short circuit and earth fault monitoring. (category 4, up to PL e) Two-channel emergency stop circuit with earth fault monitoring. (category 3, up to PL d) Single-channel emergency stop circuit with earth fault monitoring. (category 1, up to PL c) Two-channel sliding guard monitoring with short circuit and earth fault monitoring....

Maintenace Safety Relays from IDEM SCR-7 The device must be checked once per month for proper function and for signs of tampering and bypassing of the safety function. The device is otherwise maintenance free, provided that it was installed properly. What to Do in Case of a Fault? Device does not switch on: • Check the wiring by comparing it to the wiring diagrams. • Check the safety switch used for correct function and adjustment. • Check whether the emergency stop circuit is closed. • Check whether the start button (with manual start) is closed. • Check the operating voltage at A1 and A2. •...

Safety Relays from IDEM User Information Dimension Drawing AC/DC 24V (50-60Hz), fixed screw terminals AC/DC 24V (50-60Hz), plug-in terminals IDEM SAFETY SWITCHES Ltd, 2 Ormside Close, Hindley Industrial Estate ,Hindley Green, Wigan, WN2 4HR UK, Tel: +44 (0)1942 261000 Fax.: +44 (0)1942 676293 IDEM ( U.S.A.) - 3909 Washington Blvd. 204, Fremont, CA 94538 email: [email protected] web: www.idemsafety.com Feb 16