NOTE
For single-phase pumps, remove the external capacitor
before wiring
10
Water level sensor signal
input terminal for tank
Tank water level signal input, open circuit is normal,
short circuit is abnormal. Function setting through
Pr15, default value 7
TANK-COM
Terminal Terminal Name
Function Description
Well water level signal input, open circuit is
abnormal, short circuit is normal. Function setting
through Pr17, default value 6.
WELL-COM
Multi function switch input
terminal
Woltman water meter signal input. Function setting
through Pr19, default value 0.
MUX-COM
+24V power supply
24V power supply, maximum output current 300mA;
can be used as power supply of communication
module, external sensor or miniature relay
+24V-COM
+10V power supply
10V power supply, maximum output current 50mA;
can be used as power supply of an external
potentiometer with resistance value range of 1k
Ω~5kΩ
+10V-GND
RS485 communication
interface
Interface for communication with wired external host
or inbuilt wireless communication module. (Default
setting enable the communication with inbuilt
imodule, if needed for external host, relevant
advanced parameter must be modified)
A-B
Analog input terminal
Water level sensor signal input or pressure sensor
signal input.
Range: DC 4~20mA, 0-10V depending on the
jumper connection at the board
A1N-GND
N o r m a l o p e n r e l a y
contact
Contact drive capability:
AC250V, 3A, cosØ = 0.4
DC30V, 1A
TNO -TCOM
N o r m a l c l o s e r e l a y
contact
Water level sensor signal
input terminal for Well
TNC - TCOM