Relay Outputs (Type R)
R-series modules, such as the XEP01R and XSP01R, use mechanical relays with potential-free contacts. The contacts provide galvanic isolation and can switch AC or DC loads within their ratings.
Technical Data
| Parameter | Value |
|---|---|
| Contact Type | Normally open (NO) |
| Switching Voltage | Maximum 30 VDC / 250 VAC |
| Switching Current | Maximum 3 A (resistive load) |
| Electrical Life | Minimum |
| Mechanical Life | approx. |
| Relay Type | Tyco PCN-124D3MHZ |
Relay Power Supply (+Us)
IMPORTANT: 18 V Minimum Voltage
The relay coils require at least 18 VDC at the Us+ and Us- terminals to operate reliably. A 12 V supply, which can be used with L-series modules, is not sufficient.
Output Pin Assignment
Each terminal pair is a potential-free normally open contact.
| Bit | Terminal | Description |
|---|---|---|
| 0 | O0 / O0 | Relay contact Bit 0 (NO) |
| 1 | O1 / O1 | Relay contact Bit 1 (NO) |
| 2 | O2 / O2 | Relay contact Bit 2 (NO) |
| 3 | O3 / O3 | Relay contact Bit 3 (NO) |
| 4 | O4 / O4 | Relay contact Bit 4 (NO) |
| 5 | O5 / O5 | Relay contact Bit 5 (NO) |
| 6 | O6 / O6 | Relay contact Bit 6 (NO) |
| 7 | O7 / O7 | Relay contact Bit 7 (NO) |
Safety at 230 V
When switching 230 VAC mains voltage, provide appropriate protection against accidental contact and follow all applicable regulations. Only qualified personnel may work on mains-voltage circuits.