Control Circuit - Mitsubishi Electric 800 Series Instruction Manual

2.6

Control circuit

2.6.1 Details on the control circuit terminals
 Input signal
Type Terminal Common
symbol
*1 SD (sink
STF
(negative
common))
PC
*1
STR
(source
(positive
common))
STP
*1
(STOP)
RH, RM,
*1
RL
*1
JOG
*1
RT
*1
MRS
*1
RES
*1
AU
*1
CS
50
2. INSTALLATION AND WIRING
2.6 Control circuit
Terminal name
Forward rotation Turn ON the STF signal to start
start forward rotation and turn it OFF to
stop.
Reverse rotation Turn ON the STR signal to start
start reverse rotation and turn it OFF to
stop.
Start self-holding Turn ON the STP (STOP) signal to self-hold the start
selection signal.
Multi-speed Multi-speed can be selected according to the
selection combination of RH, RM and RL signals.
Jog mode Turn ON the JOG signal to enable JOG operation (initial
selection setting) and turn ON the start signal (STF or STR) to
start JOG operation.
Pulse train input Terminal JOG is also used as a pulse train input
terminal. To use as a pulse train input terminal, change
the Pr.291 setting. (maximum input pulse: 100k pulses/
s)
Second function Turn ON the RT signal to enable the second function.
selection When the second function such as "second torque
boost" and "second V/F (base frequency)" is set,
turning ON the RT signal enables the selected function.
Output stop Turn ON the MRS signal (2 ms or more) to stop the
inverter output.
Use this signal to shut off the inverter output when
stopping the motor with an electromagnetic brake.
Reset Use this signal to reset a fault output provided when a
protective function is activated. Turn ON the RES signal
for 0.1 s or longer, then turn it OFF.
In the initial setting, reset is set always-enabled. By
setting Pr.75, reset can be set enabled only at fault
occurrence. The inverter recovers about 1 s after the
reset is released.
Terminal 4 input The terminal 4 function is available only when the AU
selection signal is turned ON.
Turning the AU signal ON makes terminal 2 invalid.
No function Use Pr.186 CS terminal function selection for
function assignment.
Terminal function description
When the STF
and STR signals
are turned ON
simultaneously,
the stop
command is
given.
Rated Refer
specification to
page
Input resistance 550
4.7 k
Voltage when
contacts are open:
21 to 27 VDC
When contacts are
short-circuited:
4 to 6 mADC
550
226
224
Input resistance 222
2 k
When contacts are
short-circuited:
8 to 13 mADC
Input resistance 348
4.7 k
Voltage when
contacts are open:
21 to 27 VDC
346
When contacts are
short-circuited:
4 to 6 mADC
162
318
—