Commercial Power Supply-Inverter Switch-Over Function (Pr. 135 To Pr. 139) - Mitsubishi Electric FR-A520-0.4K Instruction Manual

4.2.43 Commercial power supply-inverter switch-over function
(Pr. 135 to Pr. 139)
Pr. 135 "commercial power supply-inverter
switch-over sequence output terminal selection"
Pr. 136 "MC switch-over interlock time"
Pr. 137 "start waiting time"
Pr. 138 "commercial power supply-inverter
switch-over selection at alarm occurrence"
Pr. 139 "automatic inverter-commercial power
supply switch-over frequency"
The inverter contains a complicated sequence circuit for commercial power supply-inverter operation switch-
over. Hence, the magnetic contactors for switch-over can be interlocked easily by merely entering the start,
stop or automatic switch-over select signal.
Parameter Factory
Number Setting
135 0
136 0.1 s
137 0.5 s
138 0
139 9999
(1) Wiring example
Sink logic, Pr. 185 = 7, Pr. 186 = 6, Pr. 192 = 17, Pr. 193 = 18, Pr. 194 = 19
Inverter
NFB MC1
R
S
T
R1
S1
Inverter start
(forward rotation)
STF
Inverter-commercial
CS
power supply
MRS
switch-over
Operation interlock
External thermal relay OH
Reset
RES
SD
10
Frequency setting signal
2
5
Setting Range
0, 1
0 to 100.0 s
0 to 100.0 s
0,1
0 to 60.0Hz, 9999
MC2
×
External
MC3
thermal relay
U
V
IM
W
SU
Signal set in Pr. 190 to Pr. 195
*1
MC
IPF
1
*2
*1 MC3
MC
OL
24VDC
2
*1
MC2
MC
FU
*3 3
SE
IPF
OL RA
FU
24VDC
SE
Get other manuals https://www.bkmanuals.com
Related parameters
Pr. 11 "DC injection brake operation
time"
Pr. 57 "restart coasting time"
Pr. 58 "restart cushion time"
Pr. 180 to Pr. 186
(input terminal function selection)
Pr. 190 to Pr. 195
(output terminal function selection)
Remarks
9999: No automatic
switch-over
Note: This switch-over function is used in the external operation
mode. Always connect terminals R1, S1 to a different
power supply (power supply different from the one for MC1)
to ensure proper operation.
MC2 and MC3 must be mechanically interlocked.
*1. Note the sequence output terminal capacities. The terminals used
depend on the Pr. 190 to Pr. 195 settings.
Output Terminal Capacity
Inverter's open collector outputs
(IPF, OL, FU)
FR-A5AR (option output)
*2. When connecting an AC power supply, connect the FR-A5AR option
and use the contact output.
When connecting a DC power supply, install the following protective
diode.
*3. The terminals used depend on the Pr. 180 to Pr. 186 settings.
148
PARAMETERS
Permissible Output Terminal Load
24VDC 0.1A
230VAC 0.3A
30VDC 0.3A