Mitsubishi Electric FR-A800 Series Instruction Manual page 579

Pr.
6 Multi-speed setting (low
D303 speed)
22 Stall prevention operation
H500 level
48 Second stall prevention
H600 operation level
Stop-on contact/load torque
270
high-speed frequency control
A200
selection
Stop-on contact excitation
275
current low-speed scaling
A205
factor
276 PWM carrier frequency at
A206 stop-on contact
*1 The setting range of the FR-A820-03160(55K) or lower and the FR-A840-01800(55K) or lower
*2 The setting range of the FR-A820-03800(75K) or higher and the FR-A840-02160(75K) or higher
 Connection and operation example
•Sink logic
Power
supply
Forward rotation command
High-speed operation command
Middle-speed operation command
Stop-on contact selection 0
Stop-on contact selection 1
The input terminal used differs according to the Pr.180 to Pr.189 settings.
 Setting the stop-on-contact control
• Make sure that the inverter is in External or Network operation mode. (Refer to
• Select either Real sensorless vector control (speed control) or Advanced magnetic flux vector control.
• Set "1, 3, 11 or 13" in Pr.270 Stop-on contact/load torque high-speed frequency control selection.
• Set the output frequency for stop-on-contact control in Pr.6 Multi-speed setting (low speed).
Set the frequency as low as possible (about 2 Hz). If a frequency higher than 30 Hz is set, it operates with 30 Hz.
• When both the RT and RL signals are switched ON, the inverter enters the stop-on-contact control, and operation is
performed at the frequency set in Pr.6 independently of the preceding speed.
578
5. PARAMETERS
5.14 (A) Application parameters
Downloaded from ManualsNet.com
Name Initial value
10 Hz
150%
150%
0
9999
9999
MCCB
R/L1
S/L2
T/L3
STF
RH
RM
RL
RT
SD
search engine
Setting
range
0 to 590 Hz Set the output frequency for stop-on-contact control.
0 to 400%
Set the stall prevention operation level for stop-on-contact control.
The smaller value set in either Pr.22 or Pr.48 has priority.
0 to 400%
0 Normal operation
1 Stop-on-contact control
2 Load torque high-speed frequency control (Refer to
Stop-on contact + load torque high speed frequency control (Refer
3
to page 580.)
11 Stop-on-contact control
Stop-on contact + load torque high
13 speed frequency control (Refer to
page 580.)
Set the force (holding torque) for stop-on-contact control.
0 to 300%
Normally, set the scaling factor between 130 to 180%.
9999 Not compensated.
Set a PWM carrier frequency for stop-on-contact control.
*1
0 to 9
For Real sensorless vector control, the carrier frequency is always 2
kHz when the setting value is 0 to 5 and always 6 kHz when the
*2
0 to 4
setting value is 6 to 9. (Valid at the output frequency of 3 Hz or less.)
9999 As set in Pr.72 PWM frequency selection.
MC
Mechanical
brake
U
V
M
W
Description
E.OLT is invalid under stop-
on-contact control
Stop-on contact
control mode
Normal mode
Pr.4
Pr.5
Pr.6
0
(a) (b) (c)
RH
ON
RM
OFF ON
OFF ON
RL
∗
RT
OFF ON
∗ Goes into stop-on-contact control mode when
both RL and RT switch on.
RL and RT may be switched on in any order
with any time difference
(a): Acceleration time(Pr.7)
(b): Deceleration time(Pr.8)
(c): Second deceleration time(Pr.44/Pr.45)
page 389.)
page 580.)
Time