Mitsubishi Electric fr-e700 series, Instruction Manual

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Wiring Control circuit specifications
FR-E700 SC EC/ENE 3 - 23
3.4.2 Wiring instructions
●
Use shielded or twisted cables for connection to the control circuit terminals and run them away
from the main and power circuits (including the 230 V relay sequence circuit).
●
Use two or more parallel micro-signal contacts or twin contacts to prevent a contact faults when
using contact inputs since the control circuit input signals are micro-currents.
●
Do not apply a voltage to the contact input terminals (e.g. STF) of the control circuit.
●
Always apply a voltage to the alarm output terminals (A, B, C) via a relay coil, lamp, etc. In no way
must a voltage be short-circuited by these relay contacts.
●
It is recommended to use the cables of 0.3 mm² to 0.75 mm² gauge for connection to the control
circuit terminals.
●
The wiring length should be 30 m maximum.
●
Do not short terminal PC and SD. Inverter may be damaged.
●
When using an external power supply for transistor output, note the following points to prevent
a malfunction caused by undesirable current.
●
Do not connect any terminal SD on the inverter and the 0 V terminal of the external power supply
(when the sink logic is selected).
●
Do not connect terminal PC on the inverter and the +24 V terminal of the external power supply
(when the source logic is selected).
●
Do not install an external power source in parallel with the internal 24 V DC power source
(connected to terminals PC and SD) to use them together.
Fig. 3-15:
Contacts
I001021E
Micro signal contacts Twin contacts