DL 2622

PID Controller

DL 2622

The PID Controller DL 2622 is a standard industrial controller that can be used as P, PI, PD or PID controller in the closed loop automatic control systems.

Technical features

DL2622.gif (11063 byte)

	Power supply: +15 V ; 0 V ; -15 V
	Input summing node for two different reference variables U_R and U_C and for one controlled variable U_A.
	Signal voltage range: -10V .... +10V
	Parameters of the controller continuously adjustable
		Proportional gain K_p = 0 ... 1000
		Time of the integral action T_I = 1ms ... 100s
		Time of the derivative action T_D = 0.2ms ... 20s
	Reset input of the integral controller
	Output summing node to add or subtract noise variables

Description

1.	Measurement terminal for the error signal
2.	Adjustment screw for the output offset
3.	Three led indicator of the sense of deviation: upper red led on when U_C > U_A lower red led on when U_C < U_A
4.	Coarse and fine adjustment of the proportional gain K_p
5.	Coarse and fine adjustment of the time of the integral action T_I
6.	Coarse and fine adjustment of the time of the derivative action T_D
7.	Indicator of over-range: led "over" on when the output voltage is higher than 10 V or lower than -10 V
8.	Input I_off for resetting the I controller

Operation

A.	Equation of the controller: where is the error signal.
B.	The I controller can be included through the I_off switch (up) or excluded (down). The I_off input can be used to reset the I controller: I_off= 4.5 .... 15 V: reset; I_off= 0 or disconnected: active integrator.
C.	The D controller can be included through the D_off switch (up) or excluded (down).