Mitsubishi Electric FR-A800 Series Instruction Manual page 414

• For the terminal used for REX signal input, set "8" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign
the function.
Forward rotation
Multi-speed
selection
*1 When the RH, RM and RL signals are OFF and the REX signal is ON while "9999" is set to Pr.232 Multi-speed setting (speed 8), the inverter
operates at the frequency set in Pr.6.
 Direct multi-speed setting
• While the RLF or RLR signal is input, the operation is according to Pr.6 Multi-speed setting (low-speed). The rotation is
forward while the RLF signal is input, and the rotation is reverse while the RLR signal is input.
Low-speed forward rotation command
Low-speed reverse rotation command
NOTE
• The Pr.6 setting should be equal to or higher than the Pr.13 Starting frequency setting.
• To assign the RLF and RLR signals to input terminals, set "128 (RLF)" and "129 (RLR)" in any two parameters from Pr.178 to
Pr.189 (Input terminal function selection).
• The direct multi-speed operation is enabled when the inverter operates in External operation mode or External/PU combined
operation mode 1.
• When the RLR or STR signal is input while the RLF signal is input, the motor is decelerated to stop.
• When the RLF or STF signal is input while the RLR signal is input, the motor is decelerated to stop.
• When Pr.59 Remote function selection ≠ "0", the RLF signal is used as the STF signal, and the RLR signal is used as the
STR signal.
• When the stop-on-contact function is enabled, the RLF signal is used as the STF signal, and the RLR signal is used as the
STR signal.
 Input compensation of multi-speed setting (Pr.28)
• Speed (frequency) can be compensated for the multi-speed setting and the remote setting by inputting the frequency
setting compensation signal (terminals 1, 2).
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Inverter
STF
REX
RH
RM
RL
SD
Pr.6
Forward rotation
Output frequency
Reverse rotation
Pr.6
RLF
RLR
search engine
Speed 5
Speed 6
Speed 9
Speed 8
Speed 4
Speed 7
ON ON ON
RH
ON ON ON
RM
ON ON
RL
REX
RLF
Inverter
RLR
SD
ON
ON
5.9 (D) Operation command and frequency command
Speed 10
Speed 11
Speed 12
Speed 13
Speed 14
Speed 15
ON ON ON ON
ON ON ON ON
ON ON ON ON
ON ON ON ON ON ON ON ON
∗1
Time
5. PARAMETERS
1
2
3
Time
4
5
6
7
8
9
10
413