412-AC-R

What type of control device is this?

The 412-AC-R is a compact programmable control relay that uses ladder logic to manage switching tasks. It combines digital inputs, relay outputs, timers and counters with an integrated display and operating keys.

What supply voltage does it require?

It operates from a nominal 115 V or 230 V AC supply. The specified operating range is 97–264 V AC, with a supply frequency of 47–63 Hz.

How many inputs and outputs are provided?

The unit provides eight AC digital inputs and four relay outputs. This configuration is suitable for compact control arrangements involving switches, sensors and electrically operated loads.

Does it accept analogue input signals?

No. This AC-powered version provides digital inputs only and does not include analogue input channels.

What loads can the relay outputs switch?

The published output ratings include 8 A at 230 V AC for resistive loads, 3 A at 250 V AC under AC-15 conditions and 1 A at 24 V DC under DC-13 conditions. The applicable rating depends on the load type and switching frequency.

Can control logic be entered directly on the device?

Yes. The integrated cursor and function keys allow ladder logic to be entered and edited directly on the unit. Its four-line LCD displays the control logic, while power-flow indication helps users follow its operating state.

What is the programme capacity?

The control relay has flash programme memory with a capacity of 120 contacts. Password protection is also provided to restrict access to the stored programme.

Are timer and counter functions included?

Yes. Built-in timer and counter functions allow the relay to perform tasks such as delayed switching, timed sequences and event counting within its programmed control logic.

Does it include a real-time clock?

No. The 412-AC-R does not have a real-time clock. Its timer functions can provide relative timing, but the unit does not offer built-in clock-based scheduling.

How is the unit mounted and connected?

It is designed for mounting on a 35 mm DIN rail. Screw-clamp terminals are provided for the electrical connections, with a specified conductor range of 20–14 AWG.

What environmental conditions is it designed for?

The specified operating temperature range is 0°C to +55°C, and the storage range is −20°C to +70°C. Its IP20 protection rating means it should be installed in a suitable enclosure within a dry, dust-free environment.

What applications is it suited to?

Typical applications include straightforward machine sequencing, lighting control, pump switching and counting operations. Suitability depends on the required control logic, available input and output capacity, and the electrical characteristics of the connected equipment.