2.6 Optional Parts
If the user needs such optional parts, please specify when placing the order.
Table 2-6 MD320 Inverters Optional Parts
Name Model Function Remarks
Built-in brake unit
The letter
“B” attached
behind the
product
model
Single-phase slave built-in brake
unit of 0.4kW
～
2.2kW (standard)
Three-phase slave built-in brake
unit of 0.75kW
～
15kW (standard)
Built-in brake unit
of 18.5kW to 30kW
(optinal)
External brake unit MDBU External brake unit of over 37kW
If 75kW or above
is required, it can
employ the parallel
mode.
Energy feedback
unit
MDFB
The inverter is energy saving
product which can feed the electric
energy back to AC power grid.
Multi-pump water
supply control card
MD32WS
It can realize constant pressure
water supply system with multi-
pump water supply system, and
has multiple optional water supply
modes as well as standby function
and re control function.
Built-in clock
I/O expansion card MD32IO
It can add five digital inputs, one
analog voltage input, one relay
output, one digital output and one
analog signal output.
MODBUS
Communication
card
MD32MBS
RS485 communication interface
a n d R S 2 3 2 c o m m u n i c a t i o n
interface
RJ45 is compatible
with the terminal
interface.
PROFIBUS-DP bus
card
MD32PFS PROFIBUS-DP bus interface
DeviceNet bus card MD32DCT DeviceNet bus interface
CANopen bus card MD32CAN CANopen bus interface
Ltd all employs standard external DC reactor, which is packed in independent wooden box and
delivered together with the inverter. When mounting the inverter, the user needs to remove the
short circuit bus between the terminals P and (+) of the main circuit of the inverter and then
connect the DC reactor between P and (+). There is no polarity between the reactor terminal
and the inverter terminals P and (+) . After the DC reactor is mounted, the short circuit bus
between P and (+) will not be used.
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