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Z Stop On Contact (pr. 275, Pr. 276) - Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual

Transistorized inverter, high function & low acoustic noise.
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z
Stop on contact (Pr. 275, Pr. 276)
Pr. 275 "stop-on-contact exciting current
low-speed multiplying factor"
Pr. 276 "stop-on-contact PWM carrier
frequency"
Set "1 or 3" (stop-on-contact control) in Pr. 270. Also advanced magnetic flux vector control must be
z
selected.
Parameter
Factory Setting
Number
270
0
275
9999
276
9999
<Wiring and operation examples>
·
Sink logic
NFB
Power supply
200-230VAC
or 380-480VAC
Start signal
Multi-speed selection 1
Multi-speed selection 2
Stop-on-contact selection 1
Stop-on-contact selection 2
Note: The input signal terminals used depend on the Pr. 180 to Pr. 186 settings.
When both the RT and RL terminals are switched on, the inverter enters the stop-on-contact mode, in which
operation is performed at the frequency set in Pr. 6 "multi-speed setting (low speed)" independently of the
preceding speed.
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Setting Range
0, 1, 2, 3,
0 to 1000%, 9999
0 to 15, 9999
<Without stop-on-contact control>
<With stop-on-contact control>
Vibration
Complete stop
Lift
MC
Mechanical
brake
R 〈L
U
1
S 〈L
V
Motor
2
T 〈L
W
3
STF
RH
RM
RL
RT
SD
161
PARAMETERS
Related parameters
Pr. 4 "multi-seed setting (high speed)"
Pr. 5 "multi-seed setting (middle speed)"
Pr. 6 "multi-seed setting (low speed)"
Pr. 48 "second stall prevention
operation current"
Pr. 72 "PWM carrier frequency"
Pr. 180 to Pr. 186 (input terminal
function selection)
Pr. 270 "stop-on-contact, load torque
high-speed frequency selection"
Lift
Output
frequency
Ordinary mode Stop-on-contact control
Pr.4
Pr.5
Pr.6
0
(a)
(b)
(c)
RH
RM
RL
RT
Goes into stop-on-contact control mode when both
RL and RT switch on.
Note: (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)
Time
ON
OFF
ON
OFF
ON
OFF
ON
OFF

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