Shenzhen Hpmont Technology Co., Ltd.
Chapter 4 Electrical Installation
HD5L Series Controller User Manual V1.4
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15
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Chapter 4
Electrical Installation
4.1
Precautions
•
Only qualified electrical engineer can perform wiring job.
•
To facilitate the input side over-current protection and outage maintenance, connect HD5L with power supply via
the MCCB or fuse.
•
Do not dismantle HD5L or do wiring operation until the power is cut-off for more than 10 minutes, the internal
charge indicator of HD5L is off and the voltage between (+) and (-) of the main circuit terminals is below 36V.
•
Check the wiring carefully before connecting emergency stop or safety circuit.
•
There is more than 3mA leakage current in HD5L grounding, depending on the operating conditions. To ensure
safety, HD5L and the motor must connect to separate and independent grounding wire, so as to ground reliably. It
must use Type B mode when utilize ground leakage protection devices (ELCB/RCD).
•
Do not touch the wire terminals of HD5L when it is live. The main circuit terminals are neither allowed connecting
to the enclosure nor short-circuiting.
•
Do not do dielectric strength test on HD5L.
•
For HD5L with more than 2 year’s storage, please use regulator to power it slowly.
•
Do wiring connection of the braking resistor or the braking unit according to the wiring figure.
•
Make sure the terminals are fixed tightly.
•
Do not connect the AC supply cable to the output terminals U/V/W of HD5L.
•
Do not connect the phase-shifting capacitors to the output circuit.
•
Be sure HD5L has ceased output before switching motor or change-over switches.
•
The HD5L DC bus terminals must not be short-circuited.
4.2
Peripheral Accessories Selection
4.2.1
Wiring specifications of input and output
The AC supply to HD5L must be installed with suitable protection against overload and short-circuits,
i.e. MCCB (molded case circuit breaker) or equivalent device.
The recommended specification of MCCB, contactor & cables are shown as Table 4-2.
The size of ground wire should accord with the requirement in 4.3.5.4 of IEC61800-5-1, as shown in
Table 4-1.
Table 4-1 Sectional area of ground protective conductor
Sectional area S of phase conductor (power supply
cable) while installing (mm
2
)
S ≤ 2.5
2.5 < S ≤ 16
16 < S ≤ 35
S > 35
Min. sectional area Sp of relative protective conductor
(ground cable) (mm
2
)
2.5 S
16 S/2
Danger
Warning
4