Control Circuit - Mitsubishi Electric FR-S500 Series Instruction Manual

3.3 Control circuit

3.3.1 Explanation of control circuit terminals
Symbol Terminal Name
Forward rotation
STF
start
Reverse rotation
STR
start
RH
Multi-speed
RM
selection
RL
SD Contact input
(*1) common (sink)
External
transistor
PC common, 24VDC
(*1) power supply,
contact input
common (source)
Frequency setting
10
power supply
Frequency setting
2
(voltage signal)
Frequency setting
4
(current signal)
Frequency setting
5
input common
Turn on the STF signal to
start forward rotation and
turn it off to stop.
Turn on the STR signal to
start reverse rotation and
turn it off to stop.
Turn on the RH, RM and RL signals in
appropriate combinations to select
multiple speeds.
The priorities of the speed commands
are in order of jog, multi-speed setting
(RH, RM, RL, REX) and AU.
Common to the contact input terminals (STF, STR, RH, RM,
RL). (*6)
When connecting the transistor output (open collector output),
such as a programmable controller (PLC), connect the positive
external power supply for transistor output to this terminal to
prevent a malfunction caused by undesirable currents.
This terminal can be used as a 24VDC, 0.1A power output
across terminals PC-SD.
When source logic has been selected, this terminal serves
as a contact input common.
5VDC, Permissible load current 10mA.
Inputting 0 to 5VDC (or 0 to 10V) provides the maximum output
frequency at 5V (10V) and makes input and output proportional.
Switch between 5V and 10V using Pr. 73 "0-5V, 0-10V selection".
Input resistance 10kΩ. Maximum permissible input voltage 20V
Input 4 to 20mADC. It is factory set at 0Hz for 4mA and at
60Hz for 20mA.
Maximum permissible input current 30mA. Input resistance
approximately 250Ω.
Turn ON signal AU for current input.
Turning the AU signal on makes voltage input invalid. Use any of
Pr. 60 to Pr. 63 (input terminal function selection) to set the AU
signal.
Common terminal for the frequency setting signals
(terminal 2, 4) and indicator connection (terminal AM). (*6)
11
Control circuit
Definition
When the STF and STR
signals are turned on
simultaneously, the stop
command is given.
The terminal
functions change
with input terminal
function selection
(Pr. 60 to Pr.63).
(*3)
3