DL 2678

Manual/Automatic Switch

DL 2678

Module DL 2678 allows to close the control loop, without oscillations, after a suitable setting of the system.
It is composed of a summing point to which the signal coming from a potentiometer (manual mode) and the signal coming from the controller (automatic mode), insertable through switch, are connected.

Technical features

DL2678.gif (6887 byte)

	Power supply: +15 V ; 0 V ; -15 V
	Signal voltage range: -10V, ..., +10V
	Manual mode/Automatic mode switch
	Manual mode potentiometer
	Output summing point

Description

1.	Terminal for the input signal coming from the controller
2.	Terminal for the output signal (controlling quantity) connected to the process actuator
3.	Three led indicator of the sense of deviation of the signal coming from the controller
4.	Switch for closing the control loop (from Manual mode to Automatic mode)
5.	Output summing point with two non inverting inputs
6.	Manual potentiometer for fine continuous setting