E6581364②
TOSVERT VF-AS1/PS1
Commercial Power Supply Backup and
Commercial Power Supply/Inverter Switching
Instruction Manual
Technical information described in this document is used to explain typical operations and
applications of products, and this is not intended to grant warranty or licensing right on its
use regarding TOSHIBA group or a third party intellectual property and other right.
E6581364
1. Commercial Power Supply Backup
When the inverter’s protective function is activated, switching power to commercial power supply
makes the motor run immediately.
1.1. Standard connection diagram
MC1 *2
PA/+
PO
PC/-
PB
For motor protection
THR *4
MC2 *3
MC3 *2
MCCB
R/L1
U/T1
V/T2
Motor
S/L2
T/L3
Main circuit
I M
W/T3
F
Run
Control power supply
backup option *1
command
R
ST
Stand-by *7
Reset *6
+SU
RES
S1
FLA
FLB
Control
circuit
Emergency
stop *5
S2
FL
FLC
Protective action
detection relay
S3
P24/PLC
OUT1
RY1
RY2
Common
CC
G / E
OUT2
NO
CC
AM CCA RX VI/II RR/S4
OUT1 FM
PP
*7: VF-AS1's 'WP1/WN1' model and VF-PS1 don't have 'ST'
terminal. Please set next parameter for use 'S3' terminal as
'ST' function.
*1: The control power supply backup option (Model: CPS002Z) is needed.
*2: Observe the Item 1 in 1.3, “Precautions.”
*3: See Item 2 in 1.3, “Precautions.”
*4: Be careful about Items 3 in 1.3, “Precautions.”
*5: Be careful about Items 5 and 7 in 1.3, “Precautions.”
*6: Be careful about Item 6 in 1.3, “Precautions.
f110 (Always ON function selection 1)
f117 (Input terminal function selection: S3) = 6
= 0
2
E6581364
1.1.1. Switching circuit connection diagram, Time chart,
Parameter settings
Inverter
trip occurs
Inverter protective
F L
Speed detection time
action signal
FLA
FLC
Setting
frequency
FLX
Frequency after speed is
detected
ON
OFF
0Hz
X
Inverter-side switching wait
time *2
P24-OUT1(RY1)
for inverter run
output
ON
ON
ON
X
Commercial power
switching wait time
RY1
(Inverter)
P24-OUT2(RY2)
for commercial
power run output
ON
MC2
Run signal
F-CC
ON
MC2
MC3
MC1
Stand-by signal
ST-CC
RY2
(Commercial
power)
ON
X
Reset signal
RES-CC
MC3
X
Inverter run
Commercial power run
Inverter run
F
Title
Function
Adjustment range
0 to 3
Setting value
Output signal selection of commercial
power/inverter switching
1 (Automatic switching in case
of trip)
*3
*3
Inverter side switching waiting time
0.1 to 10.0 seconds
0.37 to 10.0 seconds
Different for each model
0.62
Commercial power side switching waiting
time
20
*1
Input terminal selection #6 (S2)
0 to 135
0 to 119
(Emergency stop)
46
Output terminal selection #1 (OUT1)
(Commercial power/inverter
switching output 1)
48
Output terminal selection #2 (OUT2)
0 to 119
(Commercial power/inverter
switching output 2)
*1:Be careful about Items 5 and 7 in 1.3, “Precautions.”
*2:Due to internal processing timing, inverter-side wait time become 0.5 second longer than the setting value of
*3: and are included the operation time of the relay and the magnet contactor.
In almost all cases, it is not necessary to change these parameter settings.
3
E6581364
1.2. Standard connection diagram (Star-delta switching start)
This is the circuit to switch the motor to commercial power supply Star Delta (star-delta) connection
startup when the inverter’s protective function is activated.
MC1 *2
PA/+
PO
PC/-
PB
For motor protection
THR *4
MC2 *3
MCY
MC3 *2
MCCB
R/L1
U/T1
V/T2
W/T3
Motor
S/L2
T/L3
Main circuit
I M
MCD
Run
command
F
R
Control power supply
backup option *1
Stand-by *7
Reset *6
ST
RES
S1
S2
S3
+SU
FLA
FLB
Control
circuit
Emergency
stop *5
FL
FLC
Protective action
detection relay
P24/PLC
OUT1
CC
Common
RY1
G / E
RY2
OUT2
NO
CC
AM CCA RX VI/II RR/S4
OUT1 FM
PP
*1: The control power supply backup option (Model: CPS002Z) is needed.
*2: Observe the Item 1 in 1.3, “Precautions.”
*3: See Item 2 in 1.3, “Precautions.”
*7: VF-AS1's 'WP1/WN1' model and VF-PS1 don't have 'ST'
terminal. Please set next parameter for use 'S3' terminal as
'ST' function.
*4: Be careful about Items 3 in 1.3, “Precautions.”
*5: Be careful about Items 5 and 7 in 1.3, “Precautions.”
*6: Be careful about Item 6 in 1.3, “Precautions.
f110 (Always ON function selection 1)
f117 (Input terminal function selection: S3) = 6
= 0
4
E6581364
1.2.1. Switching circuit connection diagram, Time chart,
Parameter settings
Inverter protective
action signal
Inverter
trip occurs
F L
Speed detection time
FLA
FLC
FLX
Setting
frequency
Frequency after speed is
detected
ON
OFF
0Hz
X
Inverter-side switching
wait time *2
P24-OUT1(RY1)
for inverter run
output
ON
ON
ON
X
Commercial power
switching wait time
RY1
(Inverter)
P24-OUT2(RY2)
for commercial
power run output
ON
MC2
Run signal
F-CC
ON
MC2
RY2
(Commercial
power)
MC3
MC1
Stand-by signal
ST-CC
ON
Ｙ-△Switching timer
Reset signal
RES-CC
MC1
X
Inverter run
Inverter run
Commercial power run
MCD
MCY
MCD
MCY
MC3
X
F
5
E6581364
Title
Function
Adjustment range
0 to 3
Setting value
Output signal selection of commercial
power/inverter switching
1 (Automatic switching when
tripped)
*3
*3
Inverter side switching waiting time
0.1 to 10.0 seconds
0.37 to 10.0 seconds
Different for each model
0.62
Commercial power side switching waiting
time
20
*1
Input terminal selection #6 (S2)
0 to 135
0 to 119
(Emergency stop)
46
Output terminal selection #1 (OUT1)
(Commercial power/inverter
switching output 1)
48
Output terminal selection #2 (OUT2)
0 to 119
(Commercial power/inverter
switching output 2)
*1:Be careful about Items 5 and 7 in 1.3, “Precautions.”
*2:Due to internal processing timing, inverter-side wait time become 0.5 second longer than the setting value of
*3: and are included the operation time of the relay and the magnet contactor.
In almost all cases, it is not necessary to change these parameter settings.
1.3. Precautions
1. Make sure to interlock the magnetic contactor (MC3) on the inverter output side with the
commercial power supply magnetic contactor (MC1).
2. Magnetic contactor (MC2) can be omitted for normal operation but this is needed to isolate the
inverter circuit in case a short-circuit fault occurs inside the inverter. Examine whether it should
be installed or not considering the importance of the system concerned.
3. Check to make sure the phase sequence of the inverter and that of the commercial power
supply are the same beforehand to maintain the motor’s rotational direction unchanged before
and after the power switching.
4. In the (Reverse-run prohibition), do not use the forward direction disable setting
(=2). Switching to commercial power supply cannot be made because the inverter
cannot run forward.
5. If the cause of the inverter trip was OCL (short-circuit on the load side at startup), E (emergency
stop) or EF1, 2 (ground fault), commercial power supply /inverter switching output 1, 2 (output
terminal selection 46, 48) are both shut off and MC1 and MC3 on both inverter and commercial
power supply sides disabled and unable to turn on.
6. In case an inverter trip occurs, remove the cause of the protective action and then reset the
inverter to start the inverter again.
7. S2 terminal (emergency stop) can be omitted, but it is needed as a circuit to detect a motor
overload when the motor is operated on commercial power supply. Examine whether it should
be installed or not considering the importance of the system concerned.
8. Regarding the selection of MCCB used when the backup circuit starts in star delta configuration,
you have to consider the peak current when star connection is switched to delta connection.
9. In the case the motor’s connection is star-delta, use delta connection when the inverter is
running. (Do not switch star delta connection while the inverter is running.)
6
E6581364
2. Commercial Power Supply/Inverter Switching
The motor runs on commercial power supply under rated operating conditions and when the motor
runs in energy saving mode with its input power frequency lowered, this circuit switches the motor
to the inverter power without stopping the motor.
2.1. Standard connection diagram
MC1 *2
PA/+
PO
PC/-
PB
For motor protection
THR *4
MC2 *3
MC3 *2
MCCB
R/L1
U/T1
V/T2
Motor
S/L2
T/L3
Main circuit
I M
W/T3
F
Run
Control power supply
backup option *1
command
R
ST
Stand-by *7
Reset *6
+SU
RES
S1
FLA
FLB
Control
circuit
Emergency
stop *5
S2
FL
FLC
Protective action
detection relay
Commercial run
switching signal
S3
P24/PLC
OUT1
RY1
RY2
Common
CC
G / E
OUT2
NO
CC
AM CCA RX VI/II RR/S4
OUT1 FM
PP
*1: The control power supply backup option (Model: CPS002Z) is needed.
*2: Observe the Item 1 in 2.2, “Precautions.”
*3: See Item 2 in 2.2, “Precautions.”
*7: VF-AS1's 'WP1/WN1' model and VF-PS1 don't have 'ST'
terminal. Please set next parameter for use 'S3' terminal as
'ST' function.
*4: Be careful about Items 3 in 2.2, “Precautions.”
*5: Be careful about Items 5 and 7 in 2.2, “Precautions.”
*6: Be careful about Item 6 in 2.2, “Precautions.
f110 (Always ON function selection 1)
f115 (Input terminal function selection: S1) = 6
= 0
7
E6581364
2.1.1. Switching circuit connection diagram, Time chart,
Parameter settings
Commercial power switching
frequency hold time
Inverter protective
F L
Commercial power
switching frequency
action signal
Speed detection time
FLA
FLC
FLX
Frequency after speed is
detected
Setting frequency
(Commercial
power)
(Inverter)
0Hz
Inverter-side switching
S3
wait time *2
P24-OUT1(RY1)
for inverter run
output
ON
ON
S3
Commercial power
switching wait time
P24-OUT2(RY2)
for commercial
power run output
RY1(Inverter)
ON
MC2
MC3
Commercial power
run switching signal
S3-CC
MC2
ON
Run signal
F-CC
RY2(Commercial
power)
ON
ON
MC1
F
Stand-by signal
ST-CC
ON
MC3
Inverter run
Commercial power run
Inverter run
Title
Function
Adjustment range
0 to 3
Setting value
2 or 3
Output signal selection of commercial
power/inverter switching
Commercial power/inverter switching
frequency
0 to
Power supply frequency
Different for each model
0.62
*3
*3
Inverter side switching waiting time
0.1 to 10.0 seconds
0.37 to 10.0 seconds
Commercial power side switching waiting
time
Commercial power switching frequency
holding time
0.1 to 10.0 seconds
0 to 135
2.0
20
*1
Input terminal selection #6 (S2)
(Emergency stop)
102
Input terminal selection #7 (S3)
0 to 135
0 to 119
(Commercial power run
switching)
46
Output terminal selection #1 (OUT1)
Output terminal selection #2 (OUT2)
(Commercial power/inverter
switching output 1)
48
0 to 119
(Commercial power/inverter
switching output 2)
*1:Be careful about Items 5 and 7 in 2.2, “Precautions.”
*2:Due to internal processing timing, inverter-side wait time become 0.5 second longer than the setting value of
*3: and are included the operation time of the relay and the magnet contactor.
In almost all cases, it is not necessary to change these parameter settings.
8
E6581364
2.2. Precautions
1. Make sure to interlock the magnetic contactor (MC3) on the inverter output side with the
commercial power supply magnetic contactor (MC1).
2. Magnetic contactor (MC2) can be omitted for normal operation but this is needed to isolate the
inverter circuit in case a short-circuit fault occurs inside the inverter. Examine whether it should
be installed or not considering the importance of the system concerned.
3. Check to make sure the phase sequence of the inverter and that of the commercial power
supply are the same beforehand to maintain the motor’s rotational direction unchanged before
and after the power switching.
4. In the (Reverse-run prohibition), do not use the forward direction disable setting
(=2). Switching to commercial power supply cannot be made because the inverter
cannot run forward.
5. If the cause of the inverter trip was OCL (short-circuit on the load side at startup), E (emergency
stop) or EF1, 2 (ground fault), commercial power supply / inverter switching output 1, 2 (output
terminal selection 46, 48) are both shut off and MC1 and MC3 on both inverter and commercial
power supply sides disabled and unable to turn on.
6. When the setting value for (output signal selection of commercial power supply/inverter
switching) is “2”, the system does not work even if the commercial power supply switching
signal is turned on at the time of an inverter trip.
To switch to commercial power supply, remove the cause of the protective action and reset the
inverter and then enter the switching signal to switch to commercial power supply.
7. S2 terminal (emergency stop) can be omitted, but it is needed as a circuit to detect a motor
overload when the motor is operated on commercial power supply. Examine whether it should
be installed or not considering the importance of the system concerned.
9
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