Mitsubishi Electric PUHZ-W50VHA Technical Manual page 17

ATA
application
IF
Variable capacity
request signals for
Heat Pump is
calculated...
By our IF
Your system is
AUTO STEP
SYSTEM
(IF)
AUTO STEP SYSTEM
IF PCB
ON/OFF
Operation mode
Target retern air temp.
Remote controller
End user interface
start
DIGITAL STEP SYSTEM
By Non-voltage
Contact signals
IF
ON/OF
PCB
Operation
mode
-Heating
-Cooling
Capacity
Remote
steps
By Non-voltage
for
Contact signals
maintenance
- to check
error code
capacity
By local
signals
controller
protocol is...
(your side)
digital step
(non-voltage contact)
Your system is
DIGITAL STEP
SYSTEM
(IF)
IF
System
PCB
controller
(locally
suppliied)
End user
interface
Remote
controller
For
maintenance
purpose
- analog signal
17
Analog
(0-10v/4-20mA...)
Your system is
ANALOG STEP
SYSTEM
(IF)
ANALOG STEP SYSTEM
By Non-voltage
System
Contact signals
controller
(locally
ON/OF
suppliied)
Operation
mode
End user
-Heating
interface
-Cooling
Capacity
steps
By Analog
signal
4-20mA / 1-5V / 0-10V