FunctionIn the safe state, both actuators must be inserted into the switch head.
Guard locking type
| STP-TW3 | Closed-circuit current principle, guard locking by spring force. Release by control of AS-i output 0. |
Control of the guard locking solenoidThe guard locking solenoid is controlled by the control system via AS-Interface bus bit D0. In addition the 24V connection can be switched safely.
AS-Interface inputs
| D0, D1 | Door monitoring contact SK |
| D2, D3 | Solenoid monitoring contact UK |
Evaluation is performed via a safety monitor.
AS-Interface outputs
| D0 | Guard locking solenoid |
| D1 | Red LED |
| D2 | Green LED |
LED function display
- The Power LED indicates the operating voltage on the bus.
- The Fault LED indicates if a fault has been detected on the AS-Interface bus.
- The green and the red LEDs can be controlled as required by the control system via the bus using bits D1 and D2.
Auxiliary releaseIs used for releasing the guard locking with the aid of a tool. To protect against tampering, the auxiliary release is sealed with sealing lacquer.
| Housing material | Reinforced thermoplastic |
| Weight | |
| Net | 0,5 kg |
| Ambient temperature | -20 … 55 °C |
| Degree of protection | IP67 |
| Mechanical life | 1 x 106 |
| Contact material | Silver alloy, gold flashed |
| Switching principle | Slow-action switching contact |
| Installation orientation | Any |
| Number of door position positively driven contacts | |
| According to As-i Safety at Work | 1 D0,D1 |
| Number of guard lock monitoring positively driven contacts | |
| According to As-i Safety at Work | 1 D2,D3 |
| Connection | |
| 1 x | Plug connector M12 |
| Approach speed | |
| max. | 20 m/min |
| Actuation frequency | 1200 1/h |
| Guard locking principle | Closed-circuit current principle |
| Locking force Fmax | 2500 N |
| Locking force FZh | 2000 N |
| Retention force | 20 N |
| Extraction force | 30 N |
| Actuating force | 35 N |
Electrical connection ratings
| ASi voltage | 30 V 22,5 … 31,6 V |
| ASi operating current | max.45 mA |
| ASi auxiliary voltage | |
| IEC 60742, PELV | 24 V -15% … +10% |
| ASi auxiliary current | 300 mA |
| Solenoid duty cycle | 100 % |
| ASi slave type | |
| According to ASI specification 2.1 | EA code: 7 |
| ID code: B | |
| ASi data in | |
| According to ASI safety at work | D0,D1,D2,D3 |
| ASi data out | |
| LED green | D2 |
| Guard locking solenoid | D0 |
| LED red | D1 |
| ASi LED | |
| LED green | Power |
| LED red | Fault |
Reliability values according to EN ISO 13849-1
| B10D | 5 x 106 |
In combination with Actuator BETAETIGER-S-GT-SNMechanical values and environment
| Overtravel | |
| Horizontal | 5 mm |
| Vertical | 5 mm |
| Insertion depth | |
| Horizontal | 24,5 mm |
| Vertical | 24,5 mm |
