1-8
Example of connection between the MA7200 and typical peripheral devices are shown as below.
MCCB (Molded-Case Circuit Breaker)
y
Choose the Molded Case Circuit Breaker (MCCB) of
proper current rating. Please refer to the selection guide
“1.10 Peripheral Units” on Page
1-22
.
y
Do not use a circuit breaker for start/stop operation.
y
When a ground fault interrupter is used, select the one with
no influence for high frequency. Setting current should be
200mA or above and the operating time at 0.1 second or
longer to avoid false triggering.
MC (Magnetic Contactor)
y
It is not always necessary to have a Magnetic Contactor on
the input side. However, an input Magnetic Contactor can
be used to prevent an automatic restart after recovery from
an external power loss during remote control operation.
y
Do not use the Magnetic Contactor for start/stop operation.
AC Reactor
y
To improve power factor or to reduce surge current, install
an AC Reactor on the input side of the MA7200.
Input Noise Filter
y
When used with TECO specified Input Noise Filter, the
MA7200 will comply with EN55011 class A regulation.
y
Please refer to the selection guide “1.10 Peripheral Units”
on page
1-22
.
MA7200 Inverter
y
The input power supply can be connected to any terminal
R/L1, S/L2, T/L3 on the terminal block.
y
Please connect the ground terminal E to the site ground
securely.
Output Noise Filter (Zero Phase Core)
y
Install an Output Noise Filter between the MA7200 and the
Induction Motor to eliminate noise transmitted between the
power line and the inverter.
y
Please refer to the selection guide “1.10 Peripheral
Devices” on page
1-22
.
Induction Motor
y
When multiple motors are driven in parallel with an
inverter, the inverter rated current should be at least 1.1
times the total motor rated current.
y
The inverter and the motor must be separately grounded.
Induction
motor
Power supply
Power supply
switch(NFB)
and earth
leakage
breaker
Electromagnetic
contactor
AC reactor
Input noise
filter
MA 7200
inverter
Zero phase
core
