Products specifications
| Attribute name | Attribute value |
|---|
| Coil Voltage | 24 Vdc |
| Contact | 2 CO |
| Contact Rating | 6 A |
| Position Indicator | LED |
| Series | SA-SAFE |
Description
SAFE-TWO-HAND Functional Safety Module | Safe two-hand control unit up to SIL 3
- The SAFE-TWO-HAND safety relay is an extremely compact, universal safety two-hand control unit
- It complies with EN ISO 13851, Type IIIC, and is intended for use in safety circuits that are designed in accordance with EN 60204-1, e.g., on presses, punches and bending tools
- Due to the internal error monitoring, the two-hand safety relay can be used for all applications up to the highest safety category 4 and PL e according to EN ISO 13849-1, SILCL 3 according to EN 62061 or Type III C according to EN ISO 13851
- Features
- 2 non-delayed safety contacts
- Cyclical monitoring of the output contacts
- Connection of two-hand push buttons
- Feedback loop for external contactors or extension modules
- LED indicator for status
- Short-circuit monitoring and ground fault monitoring
- Up to PL e/SILCL 3/category 4/Type IIIC (EN ISO 13849-1/EN 62061/EN ISO 13851)
- Function
- The safety relay SAFE-TWO-HAND is suitable for setting up and monitoring two-hand circuits and is used to protect the operators. Dangerous work steps can only be triggered when both two-hand push buttons connected are operated simultaneously, within 0.5 s.
- It is to be ensured a single fault or a malfunction does not lead in the loss of the safety function and every fault is detected by the cyclic self-monitoring at the latest prior to the next actuation. When the operating voltage is applied to A1-A2 and the feedback loop X1-X2 is closed, the SAFE-TWO-HAND module is ready for use. To be able to initiate a switching operation, the output relays must be de-energized. The output relays only switch to the energized position when the two-hand push buttons are operated simultaneously within 0.5 s.
- The output relays are not switched if:
- only one two-hand push button is actuated or the time between the actuation of both two-hand pushbuttons is greater than 0.5 s,
- the feedback loop is open (fault in the external contactor),
- another error (short circuit, cable break, error in the switching device) has occurred.
- When one of two-hand push button is released, the output relays open immediately. In order to trigger a new operation, both two-hand push buttons must first be released, and the feedback loop must be closed.
