Wiring Precautions - Mitsubishi Electric 800 Series Instruction Manual

NOTE
• Pulling out the wire forcefully without pushing the open/close button all the way down may damage the terminal block.
• Use a small flathead screwdriver (tip thickness: 0.4 mm / tip width: 2.5 mm).
If a flathead screwdriver with a narrow tip is used, terminal block may be damaged.
Commercially available products (as of April 2019)
Product
name
Driver
• Place the flathead screwdriver vertical to the open/close button. In case the blade tip slips, it may cause an inverter damage
or injury.
 Common terminals of the control circuit (SD, PC, 5, SE)
• Terminals SD (sink logic), PC (source logic), 5, and SE are common terminals (0 V) for I/O signals. (All common terminals
are isolated from each other.) Do not earth (ground) these terminals. Avoid connecting terminal SD (sink logic) with
terminal 5, terminal PC (source logic) with terminal 5, and terminal SE with terminal 5.
• In the sink logic, terminal SD is a common terminal for the contact input terminals (STF (DI0), STR (DI1), RH, RM, RL,
MRS, and RES) and the pulse train output terminal (FM
circuit by photocoupler.
• In the source logic, terminal PC is a common terminal for the contact input terminals (STF (DI0), STR (DI1), RH, RM, RL,
MRS, and RES). The open collector circuit is isolated from the internal control circuit by photocoupler.
• Terminal 5 is a common terminal for the frequency setting terminal (2 or 4) and the analog output terminals (AM
be protected from external noise using a shielded or twisted cable.
• Terminal SE is a common terminal for the open collector output terminals (RUN and FU). The contact input circuit is
isolated from the internal control circuit by photocoupler.
*1 Terminal FM is provided in the FM-type standard model inverter.
*2 Terminal AM is provided in the AM-type standard model inverter.
 Signal inputs by contactless switches
The contact input terminals of the inverter (STF (DI0), STR (DI1), RH, RM, RL, MRS, and RES) can be controlled using a
transistor instead of a contact switch. Refer to
2.6.6

Wiring precautions

• It is recommended to use a cable of 0.3 to 0.75 mm
• The wiring length should be 30 m (200 m for terminal FM) at the maximum.
• Do not short across terminals PC and SD. Doing so may cause an inverter failure.
• 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.
Micro signal contacts Twin contacts
• To suppress EMI, use shielded or twisted cables for the control circuit terminals and run them away from the main and
power circuits (including the 200 V relay sequence circuit). For the cables connected to the control circuit terminals,
connect their shields to the common terminal of the connected control circuit terminal. When connecting an external power
supply to terminal PC, however, connect the shield of the power supply cable to the negative side of the external power
supply. Do not directly earth (ground) the shield to the enclosure, etc.
• Always apply a voltage to the fault output terminals (A, B, and C) via a relay coil, lamp, etc.
Model Manufacturer
SZF 0- 0,4 × 2,5 Phoenix Contact Co., Ltd.
*1
page 51 for the connection diagram.
2
for the connection to the control circuit terminals.
). The open collector circuit is isolated from the internal control
1
2
3
4
5
6
7
*2
). It should
8
9
10
55
2. Installation and Wiring
2.6 Control circuit