MITSUBISHI ELECTRIC FR-S520 - Manual (Page 47)

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1
.8 How to Use the Input Signals (Assigned Terminals
RL, RM, RH, STR)
Pr. 60 "RL terminal function selection"
Pr. 61 "RM terminal function selection"
Pr. 62 "RH terminal function selection" These terminals can be
changed in function by setting
Pr. 60 to Pr. 63.
Pr. 63 "STR terminal function selection"
Page 88
1
.8.1 Multi-speed setting (RL, RM, RH, REX signals): Setting "0, 1, 2, 8"
Remote setting (RL, RM, RH signals): Setting "0, 1, 2"
By entering frequency commands into the RL, RM, RH and REX signals and turning
on/off the corresponding signals, you can perform multi-speed operation (15
speeds). (For details, refer to page 32.)
If the operation panel is away from the control box, you can perform continuous
variable-speed operation with signal contacts, without using analog signals. (For
details, refer to page 86.)
1
.8.2 Second function selection (RT signal): Setting "3"
Pr. 44 "second acceleration/deceleration time"
Pr. 45 "second deceleration time"
Pr. 46 "second torque boost"
Pr. 47 "second V/F (base frequency)"
To set any of the above functions, turn on this
"RT signal".
STF (STR)
RT
SD
Inverter
Start
Second acceleration
/deceleration
1 .8.3 Current input selection "AU signal": Setting "4"
When a fan, pump etc. is
used to perform operation of
constant- pressure/
temperature control,
automatic operation can be
performed by entering the 4-
20mADC output signal of a
regulator into across
terminals 4-5.
OFF
Automatic/manual
signal switching
Manual operation
Frequency setting
potentiometer
Automatic signal
DC4-20mA
AU
SD
10
2
5
4
Across
AU-SD
Inverter
ON
Operation
Automatic
operation
4 to 20mA
Manual
operation
0 to 5V
(0 to 10V)
When the 4-20mADC signal is used to perform operation, always short the AU signal.
REMARKS
The current input is ignored if the multi-speed signal is input.
1
.8.4 Start self-holding selection (STOP signal): Setting "5"
This connection example is used when
you want to self-hold the start signal
(forward rotation, reverse rotation).
* Connected to the STOP signal to
avoid forward or reverse rotation if
forward or reverse rotation and stop
are turned on simultaneously.
STF
STR
Stop
Forward
rotation
Reverse
rotation
(Wiring example for sink logic)
SD
STOP
*