Controller Display - Midea LSBLG320/MZ Technical & Service Manual

DX type water-cooled screw chiller (PCB Control)
Suction pressure
transmitter
EXV controller is started by main base controller.it detects suction pressure and suction temperature
and calculate suction superheat. Then it controls EXV opening depending on superheat. If it is wrong,
EXV will output alarm signal to main base controller.
b. Controller display
The interface of EXV controller cannot display and set parameter on unit, only running status display.
If parameter needs to be displayed and set. Interface should be changed.
40
24V AC
CAREL EXV controller EVD
Suction temp.
thermistor
LED Light
Can
NET connected
the network
OPEN Open the valve
CLOSE Close the valve
Activate
alarm
Drive power
Alarm output
to controller
Start/stop relay
From controller
Extinguish
be
Not
to
connected
-
-
the
-
The drive is
not connected
to power
supply
MCAC-CTSM-2014-03
EXV
Flicker
Communication
failure
Disable the drive
Disable the drive
-
-