Condition Selection Of Function Validity By Second Function Selection Signal (Rt) - Mitsubishi Electric FR-F700PJ Instruction Manual

Air-conditioning inverter
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4.11.3

Condition selection of function validity by second function selection signal (RT)

You can select the second function using the RT signal.
 When the RT signal turns ON, the second function becomes valid.
 For the RT signal, set "3" in any of Pr. 178 to Pr. 182 (input terminal function selection) to assign the function.
 The second function has the following applications.
(a) Switching between normal use and emergency use
(b) Switching between heavy load and light load
(c) Changing of acceleration/deceleration time by broken line acceleration/deceleration
(d) Switching of characteristic between the main motor and sub motor
Second function connection diagram
Start
Second function
selection
High speed
Middle speed
When the RT signal is ON, the following functions are selected at the same time.
Function
Parameter Number
Torque boost
Base frequency
Acceleration time
Deceleration time
Electronic thermal O/L
relay
Stall prevention
Applied motor
NOTE
Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr. 178 to Pr. 182 (input terminal function selection)
Function assignment of external terminal and control
Inverter
STF/STR
RT
RH
RM
SD
First Function
Second Function
Parameter Number
Pr. 0
Pr. 3
Pr. 7
Pr. 8
Pr. 44, Pr. 45
Pr. 9
Pr. 22
Pr. 71
Pr. 450
Refer to page 134
Second acceleration/deceleration time
RT
RH
RM
Applied control mode
(: Valid, : Invalid)
V/F
V/F
V/F
Pr. 46
Pr. 47
Pr. 44
Pr. 51
Pr. 48
Acceleration time
is applied
Time
Refer to
Page
GP
GP
GP
IPM
IPM
IPM
MFVC
MFVC
MFVC
103
113
113
(Pr. 9 is
119
enabled.)
(Pr. 71 is
123
enabled.)
92
96
4
137

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