Mitsubishi Electronics 520 540 Air Conditioner User Manual


 
33
Input terminals
1
WIRING
*When the RL and REX signals are used (15 speeds), a reverse rotation start
under external command and frequency setting using 4 to 20mA current input
signal cannot be made.
Multi-Speed Operation Connection Example
Multi-Speed Setting
Speed
Terminal Input
Parameter
Set Frequency
Range
Remarks
REX-
SD*
RH-
SD
RM-
SD
RL-
SD*
Speed 1
(high
speed)
OFF OFF OFF Pr. 4 0 to 120Hz

Speed 2
(middle
speed)
OFF OFF OFF Pr. 5 0 to 120Hz

Speed 3
(low
speed)
OFF OFF OFF Pr. 6 0 to 120Hz

Speed 4 OFF OFF Pr. 24
0 to 120Hz, - - -
Pr. 6 setting when Pr. 24="- - -"
Speed 5 OFF OFF Pr. 25 Pr. 6 setting when Pr. 25="- - -"
Speed 6 OFF OFF Pr. 26 Pr. 5 setting when Pr. 26="- - -"
Speed 7 OFF Pr. 27 Pr. 6 setting when Pr. 27="- - -"
Speed 8 OFF OFF OFF Pr. 80 0Hz when Pr. 80="- - -"
Speed 9 OFF OFF Pr. 81 Pr. 6 setting when Pr. 81="- - -"
Speed 10 OFF OFF Pr. 82 Pr. 5 setting when Pr. 82="- - -"
Speed 11 OFF Pr. 83 Pr. 6 setting when Pr. 83="- - -"
Speed 12 OFF OFF Pr. 84 Pr. 4 setting when Pr. 84="- - -"
Speed 13 OFF Pr. 85 Pr. 6 setting when Pr. 85="- - -"
Speed 14 OFF Pr. 86 Pr. 5 setting when Pr. 86="- - -"
Speed 15 Pr. 87 Pr. 6 setting when Pr. 87="- - -"
External
setting
OFF OFF OFF OFF
Frequency
setting
potentiometer
0 to max. setting

REMARKS
*1. When the frequency setting potentiometer is connected, the input signal of the frequency
setting potentiometer is ignored if the multi-speed select signal is switched on. (This also
applies to the 4 to 20mA input signal.)
*2. For a reverse rotation start, set Pr. 63 to "- - -" (factory setting) to make the STR signal of
terminal STR valid.
ON
ON
ON
ON ON
ON ON
ON ON
ON ON ON
ON
ON ON
ON ON
ON ON ON
ON ON
ON ON ON
ON ON ON
ON ON ON ON
10
2
5
Power supply
Forward rotation
Multi-speed
selection
Frequency
setting
potentiometer
Inverter
U
V
W
STF
REX
RH
RM
RL
IM
Motor
*2
*1
R
S
T
SD