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Terminal | Symbol | Description | Module | Channel |
3, 4 | KNX | PXC4.M16-2: KNX PL-Link |
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5, 6 | ≃, ⏊ | Operating voltage AC 24 V or DC 24 V |
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7 |
| Functional ground (must be connected on the installation side with the building grounding system (PE)). |
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9 to 17 | Ux | Universal inputs / outputs 1…12 | 61 | 1…12 |
| ⏊ | Measuring ground for Ux |
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8, 19 | V+ | DC 24 V power for field devices 2.4 W / 100 mA |
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18, 29 | V≃ | AC 24 V power for field devices 48 VA / 2 A |
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65, 66, 67 | MSTP | PXC4.M16-2: Interface EIA-485 (BACnet MS/TP) |
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68, 69, 70 | COM | PXC4.M16-2: Interface EIA-485 (M-bus, Modbus RTU) |
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Term | on, off | Switch for bus termination |
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Polar | on, off | Switch for polarization |
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75 to 86 | DOx | Relay outputs 1…4 | 11 | 1…4 |
Wiring lines for field devices
Wiring length max. 300 m (1,000 ft), CU wire or CU strand.
Cross-section depending on the signal
30 m (100 ft) applies for signal types AI NTC10K and AI NTC100K
or 300 m (984 ft) with shielding
Examples of connection diagrams for universal inputs/outputs
Digital inputs |
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Count inputs: | Counter inputs, that count faster than 1 Hz and are laid with more than 10 meters using analog inputs in the same cable duct, must be shielded. | ||
Analog inputs |
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Analog outputs |
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