Wiring Of The Control Circuit Terminals; Terminals - Mitsubishi Electric MELIPM Series Instruction Manual

3.3 Wiring of the Control Circuit Terminals

Use shielded or twisted cables for wiring the control circuit input
terminals. Also run them away from the main circuit wiring and other
power cables. Not doing so can cause a malfunction due to noise.

3.3.1 Terminals

(1) Contact input terminals
Turning the signal across any terminal and common terminal "ON" (closing
those terminals)/"OFF" (opening those terminals) provides the corresponding
function as described below.
The shaded terminal symbols indicate that their functions can be changed.
Symbol Name
Forward
STF
rotation start
Reverse
STR
rotation start
RES Reset
MRS Output stop
RH High speed
RM Middle speed
RL Low speed
Contact input
SD
common
External
PC transistor
common
Ratings of the contact input terminals
Input resistance: 4.7kΩ, open-time voltage: 24±3VDC,
short circuit-time current: 4 to 6mADC
Use the terminal PC as a power supply terminal.
Can be used as a power supply for a sensor or equivalent. The
common terminal is the terminal SD (digital common).
Power supply voltage range: 24±2VDC, max. permissible
MEMO
current: 100mA
When the terminal is used as a power supply, it cannot be used as
an external transistor common terminal to prevent a sneak current.
The response time of the contact input terminal is 20ms±15ms.
(When the stall prevention function is activated, response may be
slower.)
Terminals SD and 5 are not isolated.
CAUTION
Refer to: Chapter 8, 8.4 Selection of the Control
Circuit Contact Input Terminal Functions
Turn on this signal to start forward
rotation or turn it off to stop.
Turn on this signal to start reverse
rotation or turn it off to stop.
Turn on this signal (for more than 0.1s) to reset the protective
circuit activated. Turn it off after the protective circuit is reset.
Turn on this signal (for more than 0.1s) to stop the output and
separate the motor electrically, causing it to coast. Turing it off
with the start signal input will restart the motor at the starting
speed.
Combine on/off of these signals as appropriate to select
multiple speeds.
Refer to: Chapter 8, 8.3.2 Variable-speed
Common to the contact input terminals. (Not isolated from
terminal 5.)
Common terminal used when the contact input terminal is
connected to the transistor output (open collector output) of the
external controller. This terminal can prevent a malfunction
caused by a sneak current.
3-6
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Description
Simultaneously
turning on these
signals gives a stop
command.
operation using contact input signals
3. WIRING