Mitsubishi Electric FR-A700 EC, Instruction Manual

Page: 358 / 826

Set V/f pattern Parameter
6 - 178
6.9.3 Elevator mode (automatic acceleration/deceleration)
(Pr. 61, Pr. 64, Pr. 292)
Operation matching a load characteristic of elevator with counterweight can be performed.
Elevator mode
●
When "5" or "6" is set in Pr. 292 "Automatic acceleration/deceleration", elevator mode is
selected and each setting is changed as in the table below.
●
Enough torque is generated during power driving and the torque boost value is automatically
changed during regeneration and operation without load (refer to Fig. 6-63) so that
overcurrent protection function does not activate due to over excitation.
Pr.
No.
Name
Initial
Value
Setting Range Description Parameters referred to
Refer to
Section
61
Reference
current
9999
01800
or less
0–500A
Set the reference current for elevator mode.
570 Multiple rating
setting 6.7.5
02160
or
more
0–3600A
9999 Rated inverter current value reference
64
Starting
frequency for
elevator mode
9999
0–10%
Set the starting frequency for the elevator
mode.
9999 Starting frequency 2Hz
292
Automatic
acceleration/
deceleration
0
0 Normal mode
1
Minimum accelera-
tion/deceleration
(without brake)
Refer to section 6.11.4
11
Minimum accelera-
tion/deceleration
(with brake)
3
Optimum accelera-
tion/deceleration
5
Elevator mode 1
(stall prevention operation level 150%)
6
Elevator mode 2
(stall prevention operation level 180%)
7/8
Brake sequence mode 1, 2
(Refer to section 6.13.5)
Normal Mode
Elevator Mode
Pr. 292 = 5 Pr. 292 = 6
Torque boost Pr. 0
(6/4/3/2%)
Changes according to the output current (right chart)
Starting frequency
Pr. 13
(0.5Hz)
Pr. 64
(2Hz)
Accelerate after maintaining 100ms
Base frequency voltage Pr. 19
(8888)
440V
Stall prevention operation level Pr. 22
(150%)
etc.
150% 180%
Tab. 6-37: Valid values in the elevator mode
V/F V/F V/F