Mitsubishi 700 Series Instruction Manual page 30

(3) Control circuit common terminals (SD, 5, SE)
Terminals SD, SE and 5 are common terminals for I/O signals.(All common terminals are isolated from each other.) Do not
earth them. Avoid connecting the terminal SD and 5 and the terminal SE and 5.
Terminal is a common terminal for the contact input terminals (STF, STR, RH, RM, RL) and frequency output signal (FM). The
open collector circuit is isolated from the internal control circuit by photocoupler
Terminal 5 is a common terminal for the frequency setting signals (terminals 2 or 4). It should be protected from external noise
using a shielded or twisted cable.
Terminal SE is a common terminal for the open collector output terminal (RUN). The contact input circuit is isolated from the
internal control circuit by photocoupler.
(4) Signal inputs by contactless switches
The contacted input terminals of the inverter (STF, STR,
RH, RM, RL) can be controlled using a transistor
instead of a contacted switch as shown on the right.
(5) Wiring instructions
1) It is recommended to use the cables of 0.3mm
2) The maximum wiring length should be 30m (200m for terminal FM).
3) Do not short across terminals PC and SD. Inverter may be damaged.
4) Use two or more parallel micro-signal contacts or twin contacts to prevent
contact faults when using contact inputs since the control circuit input signals
are micro-currents.
5) Use shielded or twisted cables for connection to the control circuit terminals
and run them away from the main and power circuits (including the 200V relay sequence circuit).
6) Do not apply a voltage to the contact input terminals (e.g. STF) of the control circuit.
7) Always apply a voltage to the fault output terminals (A, B, C) via a relay coil, lamp, etc.
External signal input using transistor
2 2
to 0.75mm gauge for connection to the control circuit terminals.
Wiring
+24V
STF, etc.
Inverter
SD
Micro signal contacts Twin contacts
2
21