Pilz PNOZ S4 Safety Relay Configuration
PNOZ S4 User Guide
PNOZ S4 is a best-selling safety relay in the PNOZsigma series from Pilz. This product is easy to install, has rich functions, and supports a variety of safety circuit configurations. It is equipped with a variety of wiring methods for quick integration and is widely used in industrial safety scenarios such as emergency stop, safety door control, and light curtains.
| Type | PNOZ s1 | PNOZ s2 | PNOZ S3 | PNOZ s4 | PNOZ s4.1 |
| E-STOP | √ | √ | √ | √ | √ |
| Safety gate | √ | √ | √ | √ | √ |
| Light curtain | √ | √ | √ | ||
Performance level (PL) | c | e | e | e | e |
Safety integrity level (SIL) CL | 2 | 3 | 3 | 3 | 3 |
Output contacts (safe) | 2 | 3 | 2 | 3 | 3 |
Width in mm | 12.5 | 17.5 | 17.5 | 22.5 | 22.5 |
Special approvals | - | - | - | - | Burner control/
burner management EN 50156-1 |
gai dao zhe Next, we will briefly introduce the parameter settings of the PNOZ X.8P safety relay.
Basic description of LED indicator function
| Text description | State | Functional Description |
| PWR | Always on | Power status indicator |
| CH.1 | Always on | Input circuit of channel S12 is closed |
| CH.2 | Always on | Input circuit of channel S22 is closed |
Terminal Function Description
| Terminal number | Functional Description |
| A1、A2 | power supply |
| S11、S52 | Safety input channel 1 |
| S21、S22 | Safety input channel 2 |
S12、S34 | Startup circuit (reset mode) |
13、14 | Safety contacts |
23、24 | Safety contacts |
33、34 | Safety contacts |
41、42 | Auxiliary contacts |
The terminal arrangement can refer to the figure above.
Specific description:
Single channel operation
Input circuit has no redundant design and can detect ground faults in the start-up circuit and input circuit.
Dual-channel operation
1. Short circuit detection between contacts (selectable according to actual situation)
2. Redundant input circuit is adopted to detect ground fault of start circuit and input circuit, as well as short circuit of input circuit and monitored start circuit.
3. Short circuit detection between contacts with short circuit detection between contacts: Based on the above functions, a short circuit detection function between the input circuit contacts has been added.
Startup mode
1. Automatic start: When the input circuit is closed, the unit is directly activated.
2. Manual start: The unit is activated only when the input circuit and the start circuit are closed at the same time.
Note: Some of the information in this article is referenced from Pilz brand public information, which is intended to share industry technology and interpret products. The copyright belongs to the original company and will be deleted if infringed.
