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12 DO
A powerful relay output module with industrial-grade protection. Multiple temperature sensors near the relays prevent overheating. For outputs in PWM mode added to a group, the module's software can limit their total power, for example to the main circuit breaker capacity. Multiple phases can be connected. Fixed screw terminals securely hold cables. All outputs are universal – each can be configured as a standalone switched output, AC blinds motor controller, or PWM output.
| Category: | Control unit and IO modules |
|---|---|
| EAN: | Choose variant |
New Revision 3.0
We’ve improved the two most common causes of complaints:
- The new TBU-RS085-300-WH protection chip provides robust protection for the bus against overvoltage and short circuits.
- Replaced the DC/DC converter with a more robust model.
Features
- 12x potential-free relay outputs, 16 A
- Relay lifetime: 100,000 electrical cycles at 20 A / 250 VAC resistive load (room temperature, 1 s on / 2 s off), 2,000,000 mechanical cycles
- Maximum total load: 50 A
- Relays Hongfa HF25F/024-H4 (24 V coil, 1152 Ω)
- Output configurations:
- Standalone switched output
- AC blinds motor with internal interlock of both outputs
- PWM output
- Consumption from the 24 V supply:
- All relays off: 1 W
- Coil of one closed relay: 0.5 W (24 V² / 1152 Ω)
- All relays closed: 1 + 12 × 0.5 = 7 W
- Power dissipation in relay contacts: 0.16 W per 1 A of load (heat in the distribution board, not drawn from the 24 V supply)
- Power supply: 24 VDC ±10%
- Protection: IP20, operating temperature: −20 °C to 40 °C
- DIN rail, 6 modules. Width 107 mm, height 59 mm
- Wire cross-section: 0.2–2.5 mm² (AWG 24–14)
- Terminal screw torque: 0.5–0.7 Nm
- Strip length: 6.5–7.5 mm
Wiring information
Each relay is potential-free. Wire outputs as follows:
- Connect the phase (Lx) from the distribution board to the first screw terminal of the first output.
- Prepare short jumper wires ("bridges") and connect them from that same terminal to the common screw terminal of the next output. Continue for all outputs sharing the same phase.
- Connect the second screw terminal of each relay output to the respective load (light, socket, motor, etc.).
- Connect the neutral (N) of each load directly to the neutral busbar, not through the module.
Notes: - Multiple phases may be used on different groups of outputs if required. - The module supports standalone switching, AC blinds (with interlock), and PWM mode.
| Connector | Color | Wire | AWG | Torque | Strip | Pins |
|---|---|---|---|---|---|---|
| Relay Outputs | Grey | 0.34–4.0 mm² | 26–10 | 0.5 Nm | 7.2 mm | DO1, DO2, DO3, DO4, DO5, DO6, DO7, DO8, DO9, DO10, DO11, DO12 |
| Power | Red | 0.2–4 mm² | 30–12 | 0.5–0.7 Nm | 6.5–7.5 mm | +24V, GND |
| Bus | Blue | 0.2–4 mm² | 30–12 | 0.5–0.7 Nm | 6.5–7.5 mm | Bus A, Bus B |
