Electrical Wiring - Tacmina PZD Series Operation Manual

Electrical wiring

! WARNING
• This pump cannot be used in explosion-proof regions or in explosive or combustible atmospheres.
• Take steps to ensure that the power will not be turned on during the course of work. Hang a sign on the
power switch indicating that work is in progress.
• Do not operate the pump with wet hands. Doing so may result in electric shocks.
• Securely ground the protective earth terminal, and be absolutely sure to install a ground fault circuit
interrupter. Otherwise, you may receive electric shocks.
• Do not attempt to disassemble the pump body or the circuit parts.
!
CAUTION
• The wiring must be done by a qualified electrician or somebody with electrical knowledge.
• Connect the wires after checking the supply voltage. Do not connect the wires to a power supply that is
not within the rated voltage range.
Example of wiring
● When operating the pump in tandem
with an irrigation pump, etc.
GFCI
CB
Power supply
AC200V
3-phase
CP
CB
IMPORTANT
• Be absolutely sure to use a commercial power source (the power
supplied by an electric power company) for supplying the power.
<Power sources that cannot be used>
Power sources in which an AC power regulator is installed
Power sources on the output side of an inverter
• Since a high voltage is generated when the power is cut off or in
other such circumstances and this may result in trouble, do not
take the power from the same terminals as the induction motor of
an irrigation pump, etc.
NOTE
• A circuit protector (CP) is ideal as the injection pump's overcurrent protection device from the
standpoint of its operating duration and breaking current characteristics. (5A, medium-speed type)
• The circuit protector (CP) shown as the recommended protection device can also be used as the power
switch, thus simplifying the wiring connections.
• The thermal relay (TH) used for the motor is not appropriate for protecting the pump from the standpoint
of its characteristics.
Irrigation
MC1 TH
pump
U
V
P
W
PE
MC2
PZD/CLPZD/
ARPZD
PE
Green
Operation signals
MC
1
Automatic TH
SS1
Irrigation
Off OL
pump
Manual
PL
X
PZD/CLPZD/
MC
2 ARPZD
Automatic
SS2
Off
Manual
PL
●When running the pump on its own
GFCI
Power supply
AC100~240V
GFCI : Ground fault circuit interrupter
CB : Circuit breaker
MC1, 2 : Electromagnetic contactor
TH : Thermal relay
CP : Circuit protector
SS1, 2 : Selector switch
OL : Overload relay
PL : Pilot lamp
33
CP
PZD/CLPZD/
ARPZD
Green
PE
Irrigation
U
pump, etc.
V
P
W
PZD/CLPZD/
ARPZD
PE