Mitsubishi Electric Freqrol-A100 Instruction Manual page 94

@
Power supply
No-fuse breaker or
earth leakage circuit
breaker
r - - - -
- - -
\
Reactor
1
I
I I
I
External box
I
I
-
1 1 1
I
I
I
Reactor 2
I
I I
I I
I
I
I
I
I I
I
High power1
factor
I
converter
I
I I
I I
Motor
Ground
(2) Undervoltage, instantaneous power failure protection
Undervoltage and instantaneous power failure are detected
by the high power factor converter. When the protective
function of the high power factor converter is activated, the
inverter output is shut off by the inverter operation enable
signal. The undervoltage/instantaneous power failure pro-
tection function of the inverter itself is made invalid.
(3)
Automatic restart after instantaneous power failure
When automatic restart after instantaneous power failure is
required, select automatic restart after instantaneous
power failure (Pr. 57
; t
"9999", terminals CS and SD con-
nected) in the inverter and also set the corresponding pa-
rameter in the high power factor converter to activate auto-
matic restart after instantaneous power failure. The inverter
will restart in accordance with the automatic restart after
instantaneous power failure of the high power factor con-
verter.
(4) Regeneration
The high power factor converter has the power return func-
tion. In the regenerative mode, power is returned from the
high power factor converter.
(5) lnstantaneous power failure detection signal input terminal
The instantaneous power failure detection signal of the high
power factor converter is entered into this terminal. Use this
terminal when automatic restart after instantaneous power
failure for computer link or programmable controller link has
been selected (Pr. 125
=
"2", Pr. 57
+
"9999") by using the
computer link or programmable controller link function of
the inboard option. Assign either of AU and RT by parame-
ter setting and connect the terminal to the instantaneous
power failure detection signal terminal of the high power
factor converter (refer to Table 1). The inverter will preserve
the operating status at the time when the instantaneous
power failure detection signal input terminal and SD are
connected, and will restart in that status when power is
restored. This signal is not used for instantaneous power
failure protection.
Table 1 Pr. 30 Setting and Used Terminals
Provides
the corre-
sponding
function
given in
Table 2.
Inverter Provides the corre-
operation sponding function given
enable in Table 2 .
si nal
k
P rovides Instantane-
AU
lnstantaneous power
failure detection signal
Inverter
operation
enable
signal