A range of Finder Override and Status indicating modules that makes up the 19 Series. These relays are also known as intervention modules. With the use of carefully installed intervention modules, a trained caretaker or security guard can be in a position to recognise any interruptions in service and by manual intervention perform the necessary override actions to maintain system operation until a repair can be effected.
The Auto-Off-On output module (Type 19.21) is used in the event of an electronic system malfunction it is important, in order to avoid damage or downtime, to plan for the possibility of controlling the process manually. An Auto-Off-On Module can provide this, located between the output of the electronic system (Controller) and the process to be controlled (End Process) and bypassing the malfunctioning control unit in a planned way.
The Override Control Module (Type 19.41) may be installed if, in the event of an electronic system malfunction, emergency working has to be restored by means of manual intervention.
The Override Control Module (Type 19.42) is similar in principle to the 19.41 module except that it is intended for use with two-stage operations as associated with star-delta motor starting, two-speed fan motors, or forward/reverse motor switching.
The Analogue output module (0 to 10V) (Type 19.50) can be installed where there is need to give a manually adjustable analogue signal (0 to 10V) priority over an analogue signal from a electronic control unit or PLC, or to override and replace a malfunctioning signal.
The 19.91.9.012.4000 is a 12V DC Power Module for Twilight Switch (order code 49-2931).
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