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2. Connection
2.1 Basic Connection
■ Basic connection diagram
The figure below shows an example of typical wiring with the inverter VFAS1 and VFPS1. Be
sure to read the instruction manual of connected inverters for control circuit terminals and
parameter settings.
DC power
DC720Vmax.
Check the DC
input
power
voltage of the
inverter.
Operation power supply
AC200～240V
-50/60Hz - 20VA
(*1) When an inverter is VFPS1, set up parameterf110 to 0, and assign and use ST
operation preparation terminal (setting value 6) for an unused programmable contact input
terminal.
(*2) Set the terminal OUT1 of the inverter (parameter ) or the terminal OUT2
(Parameter ) to (External relay output function).
The figure indicates the case of using the OUT1 terminal.
(*3) Be sure to short across NO-CC. (For Sink logic)
(*4) When an inverter is VFAS1 or VFPS1, set the parameter f608 to "0". (Input phase
failure detection mode selection: disabled).
MCR-2550
２Ω
MCR-2550
PA1
MS
ＭＳ
RY1
RY2
STA
STB
STC
Standby signal
Ry
4
Ｅ６５８１５９０
VF-AS1/PS1
Inv
MC
PA2
PA
R-2550
erter
PC
NO
CC
CC
ST (*1)
P24
OUT1 (*2)
(*4)
(*3)
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