Use Switches To Give The Frequency Command (Multi-Speed Setting) - Mitsubishi Electric FR-F740 EC Instruction Manual

PU operation mode
4.5.3

Use switches to give the frequency command (multi-speed setting)

● Pr. 79 "Operation mode selection" must be set to "4" (external/PU combined operation
mode 2).
● Use the FWD or REV key to give a start command.
● The initial values of the terminals RH, RM, RL are 50Hz, 30Hz, and 10Hz. (Refer to
section 4.6.2 to change frequencies using Pr. 4, Pr. 5 and Pr. 6.)
● Operation at 15-speed can be performed by turning on two (or three) terminals simultaneously.
Fig. 4-14: Use switches to give the frequency command
RH
RM
RL
Fig. 4-15: Multi-speed selection by external terminals
4 - 20
Power
supply
High speed
Middle speed
Low speed
Speed 1 (high speed)
Speed 2
(middle speed)
Speed 2
(low speed)
ON
ON
ON
Inverter
Motor
Speed 5
Speed 6
Speed 4
ON ON
ON ON
ON
Operation
I001072E
Speed 7
t
ON
ON
ON
I000004aC