CTM-L2-AS1B-U-AZ-SJ-163977 (Order no. 163977)
Safety switch CTM-AS – with AS-i connection, plug connector M12 (open-circuit current principle)
- Guard locking only suitable for process protection: The safety outputs are switched on when guard locking is active.
- Locking force up to 1000 N
- Up to category 4 / PL e according to EN ISO 13849-1
- Actuating/extraction/retention force: 35/30/15 N
- Auxiliary release
- Unicode

Description
Guard locking type
CTM-L2 | Open-circuit current principle: Guard locking by control of AS-i output 0 and release by spring force. |
Control of the guard locking solenoid
The guard locking solenoid can be controlled via AS-Interface bus bit D0 or via the auxiliary power.
AS-Interface inputs
D0, D1 | Door monitoring |
D2, D3 | Guard lock monitoring |
Evaluation is performed via a safety monitor.
AS-Interface outputs
D0 | Guard locking |
LED function display
- The ASI LED indicates the state of the ASi bus.
- The LOCK LED indicates the state of the guard locking.
- The STATE/DIA LED indicates the state of the switch and possible errors.
Auxiliary release
This is used for releasing the guard locking with the aid of a tool. The auxiliary release must be sealed to prevent tampering (for example with sealing lacquer).



Dimensional drawings

| 1 | LEDs |
| 2 | Active read head face |
| 3 | Auxiliary release |
Connection examples

| View of plug side |
Connection examples

Technical data
Approvals



Workspace
| Repeat accuracy R | 10 % |
Electrical connection values
| ASI operating current | max. 50 mA |
| AS-Interface auxiliary voltage | 20.4 ... 24 ... 26.4 V |
| Auxiliary current AS-Interface | 650 mA |
| AS-Interface protocol | ASi-3 |
| ASI data out | D0 = control of guard locking |
| ASI data in | D0, D1 = door position, D2, D3 = guard locking |
| AS-Interface slave type | ID-Code: B, EA-Code: 7 |
| ASI voltage | 26.5 ... 30 ... 31.6 V |
| EMC protection requirements | Acc. to EN IEC 60947-5-3 |
| Solenoid duty cycle | 100 % |
| Switching load | DC 24V, UL Class 2 (alternatively, see operating instructions) |
| Safety class | III |
| Degree of contamination (external, according to EN 60947-1) | 3 |
Mechanical values and environment
| Anfahrgeschwindigkeit | max. 20 m/min |
| Connection type | Plug connector M12, 4-pin |
| Extraction force | 30 N |
| Ready delay | 3 s |
| Actuating force | 35 N |
| Installation orientation | any |
| Switching frequency | max. 0.25 Hz |
| Storage temperature | -25 ... 70 °C |
| Mechanical life | 1 x 10⁶ |
| Overtravel | 2 mm |
| Retention force | 15 N |
| Shock and vibration resistance | Acc. to EN IEC 60947-5-3 |
| Degree of protection | IP65/IP67 (In the inserted and screwed tight state) |
| Ambient temperature | |
| at UB = 24 V DC | -20 ... 60 °C |
| Material | |
| Seals | Fluorinated rubber (FKM) |
| Safety switch housing | Reinforced thermoplastic |
| Locking force Fmax | 1300 N |
| Locking force FZh | 1000 N |
| Guard locking principle | Open-circuit current principle |
Characteristic values according to EN ISO 13849-1 and EN IEC 62061
| PL | Maximum SIL | PFHD | Category | Mission time | |
|---|---|---|---|---|---|
| Monitoring of the guard position | PL e | 3 | 4.83x10-9 | 4 | 20 y |
Miscellaneous
| Notices for UL approval | Operation only with UL Class 2 power supply or equivalent measures; see operating instructions |
Downloads
Complete package
Download all important documents with a single click.
Content:
- The operating instructions and any additions to the operating instructions or brief instructions
- Any data sheets to supplement the operating instructions
- The declaration of conformity
Single Documents
Other Documents
Ordering data
| Ordernumber | 163977 |
| Item designation | CTM-L2-AS1B-U-AZ-SJ-163977 |
| Gross weight | 0,26kg |
| Customs tariff number | 85365019000 |
| ECLASS | 27-27-24-05 Safety-related transponder switch with guardlocking |



