Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 802 / 1218

(A) Application parameters Parameters
5 - 600
●
For the standard model, remove the jumpers between terminals R/L1 and R1/L11 and terminals
S/L2 and S1/L21, and connect terminals R1/L11 and P/+ and terminals S1/L21 and N/–.
●
If an undervoltage, power failure or input phase loss occurs when Pr. 261 "Power failure stop
selection"
≠
"0", the motor decelerates to a stop.
●
The power failure time deceleration stop function operates as follows at an input phase loss.
●
For the separated converter type, remove the jumpers between terminals R/L1 and R1/L11 and
terminals S/L2 and S1/L21 of the converter unit, and connect terminals R1/L11 and P/+ and
terminals S1/L21 and N/–. Do not remove the jumpers of terminal R1/L11 and terminal S1/L21 of
the inverter. (In the initial status of the separated converter type, terminals P/+ and R1/L11 and
terminals N/- and S1/L21 are connected.)
●
For the separated converter type, connect the terminal to which PWF signal of the converter unit
is assigned and the terminal to which X48 signal of the inverter is assigned. Also, set Pr. 261 of the
converter unit in accordance with the inverter setting. (Refer to the Instruction Manual of the
converter unit.)
Outline of operation of deceleration stop at a power failure
●
If an undervoltage or power failure occurs, the output frequency is turned OFF only for the
frequency set to Pr. 262 "Subtracted frequency at deceleration start".
●
The motor decelerates for the time set to Pr. 264 "Power-failure deceleration time 1". (The decel-
eration time setting is the time it takes for the motor to stop from Pr. 20 "Acceleration/deceleration
reference frequency".)
●
Change the deceleration time (slope) to the stop using Pr. 265 "Power-failure deceleration time"
I002875E_G
Fig. 5-295: Connection of the separated converter type inverter
Pr. 261 Pr. 872 Operation when an input phase loss occurs
0
0 Continuous operation
1 Input phase loss (E.ILT)
1, 2
0 Continuous operation
1 Deceleration stop
21, 22 — Deceleration stop
Tab. 5-256: Operation at input phase loss depending on Pr. 261 and Pr. 872
R/L1
S/L2
T/L3
R1/L11
S1/L21
U
V
W
M
R1/L11
S1/L21
P/+
N/-
P/+
N/-
RDA MRS(X10)
RSO RES
PWF X48
SE PC
Connect terminals
R1/L11 and P/+ and
terminals S1/L21 and
N/–.
Power supply
Remove the jumper
Inverter
Converter unit
Keep the jumpers of terminal R1/L11 and
terminal S1/L21 connected.