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6
Chapter 3 Electrical Installation
This chapter introduces the positions, specifications, and connections of the input and output terminals of the inverter.
·Disconnect the input power of the inverter and wait for at least 10 minutes before removing the inverter cover.
·Only trained and authorized professionals shall make cable connection within the inverter.
·Carefully examine the cable connection before and after connecting the emergency stop or safety circuit loop.
·The inverter had gone through voltage withstand test in factory, users shall not conduct voltage withstand test to the inverter.
·It is prohibited to connect the input power cables of the inverter to the U, V, W output terminals of the inverter.
·Generally the earth cable should be copper cable with section area great than 2.5mm
than 10Ω.
·To ensure safety, the inverter and motor must be earthed properly.
·An air breaker or fuse should be fitted on the input circuit to the inverter to provide input overcurrent protection and facilitate
maintenance.
·The control circuits are isolated from the power circuits in the drive by basic insulation (single insulation) only. The installer
must ensure that the external control circuits are insulated from human contact by at least one layer of insulation
(supplementary insulation) rated for use at the AC supply votlage.
·If the control circuits are to be connected to other circuits classified as Safety Extra Low Voltage (SELV) (for example, to
personal computer), an additional isolating barrier must be included in order to maintain the SELV classification.
·The control terminals of the inverter are on ELV circuit, do not touch them when they are energized.
·If external equipment has interfaces that allow access with power on (that is, SELV circuit), protective isolation device shall
be installed. Otherwise, the safety voltage characteristics of the SELV circuit of the external equipment will be reduced to the
safety voltage characteristic of ELV circuit.
3.1 Wiring Of Power Terminals
3.1.1 Introduction To Power Terminals
A
Chapter 3 Electrical Installation
Figure 3-1 Input power terminals
Table 3-1 Function description of input power terminals
Terminal
L, N
Single-phase 220Vac power input terminal
PE
Protective earth point
EV3200 Door Control Inverter User Manual
EV3200
PE
A amplified view
Function description
2
, the earth resistance shall be less
L
N
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