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Multi-speed Operation (pr. 4 To Pr. 6, Pr. 24 To Pr. 27, Pr. 232 To Pr. 239) - Mitsubishi Electric FR-A500 Instruction Manual

Transistorized inverter.
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4.2.4

Multi-speed operation (Pr. 4 to Pr. 6, Pr. 24 to Pr. 27, Pr. 232 to Pr. 239)

Pr. 4 "multi-speed setting (high speed)"
Pr. 5 "multi -speed setting (middle speed)"
Pr. 6 "multi -speed setting (low speed)"
Pr. 24 to Pr. 27 "multi-speed setting
(speeds 4 to 7)"
Pr. 232 to Pr. 239 "multi-speed setting
(speeds 8 to 15)"
Used to preset the running speeds in parameters and switch between them using terminals.
Any speed can be selected by switching on-off the contact signal (RH, RM, RL or REX signal).
By using these functions with Pr. 15 "jog frequency", Pr. 1 "maximum frequency" and Pr. 2 "minimum
frequency", up to 18 speeds can be set.
Valid in external operation mode or PU/external combined operation mode (Pr. 79 = "3 or 4").
Parameter
Factory Setting
Number
4
60Hz
5
30Hz
6
10Hz
24 to 27
9999
232 to 239
9999
Speed 1
(high speed)
(middle speed)
ON
RH
ON
RM
RL
<Setting>
• Set the running frequencies in the corresponding parameters.
Each speed (frequency) can be set as desired between 0 and 400Hz during inverter operation.
After the required multi-speed setting parameter has been read, the setting can be changed by pressing
the
key. (In this case, when you release the
frequency. When using the FR-PU04 (option), press the
• Use any of Pr. 180 to Pr. 186 to assign the terminal used to input the REX signal.
Note: 1. The priorities of the frequency commands are in order of jog, multi-speed operation, terminal 4 and
terminal 2.
2. The multi-speeds can also be set in the PU or external operation mode.
3. For 3-speed setting, if two or three speeds are simultaneously selected, priority is given to the set
frequency of the lower signal.
4. Pr. 24 to Pr. 27 and Pr. 232 to Pr. 239 settings have no priority between them.
5. The parameter values can be changed during operation.
6. When terminal assignment is changed using Pr. 180 to Pr. 186, other functions may be affected. Check
the functions of the corresponding terminals before making setting.
7. When only the REX signal on and Pr. 232 = "9999", the set frequency is changed to the value of low
speed operation command (Pr. 6).
Setting Range
0 to 400Hz
0 to 400Hz
0 to 400Hz
0 to 400Hz, 9999
0 to 400Hz, 9999
Speed 2
Speed 5
Speed 6
Speed 4
Speed 3
(low speed)
Speed 7
Time
ON ON ON
ON
ON
ON
ON
ON
ON
Related parameters
Pr. 1 "maximum frequency"
Pr. 2 "minimum frequency"
Pr. 15 "jog frequency"
Pr. 28 "multi-speed input compensation"
Pr. 29 "acceleration/deceleration
pattern"
Pr. 79 "operation mode selection"
Pr. 180 to Pr. 186 (input terminal
function selection)
Remarks
9999: Not selected
9999: Not selected
Speed 10
Speed 11
Speed 12
Speed 9
Speed 8
Speed 13
Speed 14
ON ON ON ON
RH
ON ON
ON ON
RM
ON
ON
ON
RL
ON
ON
ON ON ON ON ON ON
REX
When Pr. 232 = "9999" , frequency as set in Pr. 6 is output (Note 7)
key, press the
key.)
WRITE
74
PARAMETERS
Speed 15
Time
ON
key to store the set
SET

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