D+ simulator Votronic 3066

• Not suitable for use in vehicles according to Euro standard 6.
• Avoids incorrect control due to voltage drops.
• Works fully automatically.

If additional consumers should only be switched on when the alternator supplies power with the engine running, or if the auxiliary battery is to be charged via a split charge relay by connecting the auxiliary and starter batteries, the D+ terminal of the alternator is used to detect the charging operation of an alternator. If this is not accessible or is not present on newer alternators, the VOTRONIC D+ Simulator generates this signal by monitoring the starter battery connected to the alternator.

Functional scope

Switching delay approx. 4 seconds to avoid incorrect control due to voltage drops.

In case of tendency to oscillate, automatic extension of the switch-off delay up to 90 seconds.

• Indication of D+ "On" via LED.
• Low power consumption.

Possible applications

Through intelligent voltage evaluation of the battery connected to the alternator, the charging operation is detected. Thus, it is possible to control a downstream battery disconnect relay to recharge the auxiliary battery while the engine is running.

Further possible applications arise in the control of additional consumers that should only be activated when the battery is sufficiently charged. For example, switching on an air conditioning system while driving or switching on fans for interior ventilation.

The continuously lit LED indicates that the control output is switched on. Thus, it is possible to monitor the recharging of the starter battery. By connecting the switching output to an indicator (12 V lamp), the D+ Simulator can also be used as a remote charging monitor.

In the box

• Votronic D+ Simulator 3066 + operating instructions.