Thanks in advance,
we are designing a roll-off roof moved by a 12 VDC linear actuator. The actuator has its own limit switches, so the roof controller needs only provide +12 volts to open and -12 volts to close. The equivalent of a software controlled DPDT switch is the function. It is in a remote site powered by solar panels/battery system. A separate system (battery) is used to power control functions.
We would like an electrical relay that that applies +12 volts to the actuators when the relay is actuated. This could be set to open the roof. Imagine that when the relay is not activated, a spring forces it to apply -12 volts to the actuator, which closes the roof. A disadvantage in this approach is that the relay has to be energized for the whole time the roof is open. Power is at a premium and would like to avoid as much as possible power to hold the relay in the +12 Volt position. Is there such a device?
we are designing a roll-off roof moved by a 12 VDC linear actuator. The actuator has its own limit switches, so the roof controller needs only provide +12 volts to open and -12 volts to close. The equivalent of a software controlled DPDT switch is the function. It is in a remote site powered by solar panels/battery system. A separate system (battery) is used to power control functions.
We would like an electrical relay that that applies +12 volts to the actuators when the relay is actuated. This could be set to open the roof. Imagine that when the relay is not activated, a spring forces it to apply -12 volts to the actuator, which closes the roof. A disadvantage in this approach is that the relay has to be energized for the whole time the roof is open. Power is at a premium and would like to avoid as much as possible power to hold the relay in the +12 Volt position. Is there such a device?