Module INLET–010–2PK-24V is an electronic controller used to control the servomotor’s work as for opening and closing the hopper-type windows supplied with 12V DC. The level of window opening can be controlled by analogue 0..10V voltage or by an RS-485 interface for cooperation with i.a. controllers of the JOTAFAN system. This device contains a manual switch that is placed outside, on the side of the housing. It is used to choose the operational mode of a servomotor: automatic, manual opening, manual closing, turning off the servo-motor’s power supply. Additionally, in the circuit of relay contacts there was installed a so called ‘quenching diode’ and RC elements for electromagnetic disturbances suppression..

The electronic system of the controller can be supplied with 230V AC or 12V DC.

Characteristics:

• The level of window opening can be controlled in two ways:

-by analogue voltage from 0V to 10V; window opening is proportional to voltage on the input terminals,

-by an RS-485 interface (for interoperation with i.a. controllers of the JOTAFAN system.),

• Present level of window opening expressed as a percentage (0%-closure, 100%-total opening) can be set in two different ways:

-position is read by means of a servo-motor’s potentiometer,

-the position is established on the basis of time of movement from a limit switch location of windows closure (0%) to a limit switch location of full opening of windows (100%) and in the opposite direction because time of movement form 0% to 100% (window opening) can be different than time of movement from 100% to 0% (window closure).

• an input of emergency inlets opening- breaking the circuit of an input causes inlets opening for preset value (turning off with cooperation of a servo-motor’s potentiometer),

• adjustment of a digital filter operation with input voltage 0..10V (IN0 and IN10 terminals) by means of a Cf jumper,

• choice of 0..10V input operational mode (normal, inverted),

• the possibility of control of three-phase motor operation (by means of two external contactors that work as a reversing system).

Functions:

• adjustment of the value of preset voltage for which the controller will set total window opening or closure,

• saving the position of a servo-motor’s potentiometer for window closure and total opening (control calibration),

• function of emergency inlets opening after approx. 3 min of RS-485 transmission break,

• the possibility of hysteresis adjustment (as a percentage),

• automatic procedure of measurement of movement time with the cooperation of limit switches of window position. This procedure is initiated manually by the user.