Specifications

Auto control the work of compressor, motor fan of condenser and drain valve , detect 2 channels of alarm signal.

Auto control the work of compressor, motor fan of condenser (based on pressure of condenser) and drain valve (based on preset value), detect 2 channels of alarm signal. It's stable, cheap and simple.
It's design for refrigerated air dryer, need pressure of condenser to control the work of motor fan of condenser.

Function:
Set	3 buttons
Display	3 bit 0.56 inch LEDs and 5 pcs of LED lights to show work status and alarm information.
Control	Control the work of compressor, detect and display temperature/pressure. Control the work of drain valve based on preset value. Control the work of motor fan condenser based on condenser pressure
Alarm	2 alarm signal input, contains overload and low pressure alarm. 6 alarm code can be displayed via LEDs
Drain control	Turn on the drain valve 2 ways, manual or auto.
Protect	Before turn on the compressor, the time of lock time is taken. Off the compressor when there has alarm (overload, high pressure, low pressure, pressure sensor has fault)
Mounting	Panel mounting, size:3.4'' wide by 4.76'' tall

Technical parameter:
Rating voltage	AC 220V
Display	3 bit LED display temperature
Temperature accuracy	±1°C
Temperature detect range	-9 ~ 80°C
Temperature sensor	NTC 103AT
Pressure accuracy	±5Psi
Pressure detect range	0 ~ 35 bar
Pressure signal	4 ~20 mA
Output	3 channels of relay (N.O), one for compressor, another for drain valve, the other for motor fan condenser
Connection	Supply a removable connector to connect

Function of button:
NO.	Button	Definition
1	(Add)	press to display pressure/ temperature value. in set mode, press to add value press and hold over 5 seconds to release alarm signal
2	(Minus)	in lock protect / waiting state, press to open drain valve by manual in set mode, press to minus value
3	ON/OFF	1.  in standby state, press to turn on compressor. 2.  in running state, press and hold over 5 seconds to enter into set mode 3.  in set mode, press to choose the next parameter 4.  in set mode, press and hold over 5 seconds to save changed value and exit set mode 5.  in running state, press to turn off compressor.

 

Parameter definition:
Code	Definition	Set range	Unit	Typical value
1	Low temperature of evaporator	-9 ~ 20	°C	0
2	Max discharge pressure	250 ~ 400	Psi	375
3	Pressure to turn on the motor condenser	250 ~ 400	Psi	300
4	Pressure to turn off the motor condenser	250 ~ 400	Psi	200
5	Delay time to turn on auto drain	1 ~ 10	S	1
6	Compensation of temperature	-9 ~ 9	°C	0
7	Drain valve on time	1 ~ 10	S	2
8	Drain valve off time	1 ~ 10	S	8
9	Lock time	1 ~ 5	min	3

 

Alarm information:
Alarm code	Phenomenon
E1	Compressor overload signal is input, compressor stop work.
E2	Pressure of condenser too high ( pressure value > preset of ‘Max discharge pressure’), compressor stop work.
E3	Temperature of evaporator too low(temperature value < preset of ‘low temp. of evaporator), LED displays alarm code, compressor not stop work.
E4	Low pressure signal (pressure switch) is input, compressor stop work.
E5	Pressure sensor has fault ( no pressure signal input), compressor stop work.
E6	Temperature sensor has fault (temperature signal is disconnected or short connect with GND) , compressor not stop work.