Energy Guide

ManualsBrandsEMAX ManualsAir CompressorsPremium Series 120 Gal. 10 HP 230-Volt 3-Phase Electric Variable Speed Rotary Screw Air Compressor W/Refrigerated Dryer

04.24.13 Rev. 0.3a 20

HOW LOGIK 25-S CONTROLS THE COMPRESSOR

afety time Wt5

Pushing the stop button , the compressor stops according the following procedure:

a) if the compressor is loading, it changes into unload run for the time set on timer Wt5; during this time the restart

is accepted by the button ; when the timer Wt5 is elapsed, the compressor stops and the LCD visualizes the

message “OFF”;

b) if the compressor is unloading and the timer Wt4 is higher than Wt5, once the timer Wt4 is elapsed, the

compressor stops and the LCD visualizes the message “OFF”; if Wt4 is lower than Wt5, the timer Wt5 keeps on

counting and once it elapses, the compressor stops and the LCD visualizes the message “OFF”;

c) if the compressor is “IN SET” status, it stops and the LCD visualizes the message “OFF”;

d) when the compressor stops and the LCD visualizes the message “OFF”, the timer Wt5 starts; during this time if

the start button is pushed, the LCD visualizes the message “WAIT” and the compressor doesn’t start; the

compressor starts when the timer Wt5 is elapsed.

In case of compressor stopped due to an alarm, the timer Wt5 starts: during this time, if the alarm message is reset

and the start button is pushed, the message “OFF” starts blinking and the compressor doesn’t start; the compressor

starts when the timer Wt5 is elapsed.

Compressor stopped through remote start/stop input (IN4)

When the remote start/stop input (IN4) opens, the compressor stops according the following procedure:

a) if the compressor is loading, it changes into unload run for the timer set on Wt4 and the LCD visualizes the

blinking

message “OFF BY REMOTE STOP”; if the input IN4 is still opened, the compressor stops and the LCD

visualizes the message “OFF BY REMOTE STOP”; during the timer Wt4, if the input IN4 closes, the compressor

comes back under pressure transducer operation;

b) if the compressor is unloading, when Wt4 is elapsed, the compressor stops and the LCD visualizes the message

“OFF BY REMOTE STOP”;

c) if the compressor is “IN SET” status, the LCD visualizes the message “OFF BY REMOTE STOP”.

Operation of the load solenoid valve (RL4)

1 ) Wt4 set as fixed time

When the pressure reaches the stop set, the load solenoid valve (RL4) switch OFF and the LCD visualizes the

message “UNLOAD RUNNING X SET” and the timer Wt4 starts; when the timers elapses, if the pressure is not

below the start set, the compressor stops.

During the timer in progress, if the pressure is below the start set, the load solenoid valve (RL4) switches ON

and the LCD visualizes the message “LOAD RUNNING” and the timer Wt4 reset.

2) Wt4 set as variable time:

On the first start the compressor works as explained to point 1 above; on the next load run, the controller counts

the time the pressure spend to decrease from stop to start set; if this time (tx) is higher than the set on Wt4, the

next unload run, Wt4 will be reduced of 1 minute and so on up to a minimum time of 2 minutes.

The first cycle tx comes to be lower than t4 changed, the next unload run will come back to be counted as the

value set on Wt4.

ATTENTION: on the contact of the relay operating the load solenoid valve is mounted an RC Filter (22 η

ηη

ηF

+ 100 Ω

ΩΩ

Ω) sized for power of 4.7W; in case a less power load solenoid valve is used, if the valve keeps on

powered even if the contact of the relay is opened, the RC Filter must be eliminated by cutting the

terminal of the resistor R11.