hpmont : HD5L-4T5P5 User Manual

Shenzhen Hpmont Technology Co., Ltd Chapter 4 Electrical Installation
HD5L Series Controller User Manual ―39―
Table 4-14 Carrier frequency and the cable length between controller and motor
Cable length
< 30m 30－50m 50－100m ≥ 100m
Carrier frequency 15kHz below 10kHz below 5kHz below 2kHz below
The controller should be derated if the motor cables are too long or their cross sectional area
(CSA) is too large. The controller’s cables should be the cables with specified CSA (see Table 4-1)
because the capacitance of the cable to ground is in proportional to the cable’s CSA. If the cable
with big CSA is used, its current should be reduced. The current should be decreased by 5%
when per level of CSA is increased.
4.7.4 Ground Connections
The earth terminals PE must be connected to earth properly. The earthing cable should be as
short as possible (the earthing point should be as close to the controller as possible) and the
earthing area should be as large as possible.
The grounding resistance should be less than 10Ω.
Do not share the earth wire with other devices such as welding machines or power tools. It could
share the earthing pole, but the motor and the controller each have their own earthing pole, then
the earthing effect is better. The recommended and avoided earthing methods are respectively
shown in Figure 4-34 and Figure 4-35.
Figure 4-34 Recommended earthing method
Figure 4-35 Avoided earthing method
When using more than one controllers, be careful not to loop the earth wire as shown in Figure
4-36.
Figure 4-36 Prohibited earthing method
4.7.5 EMI Filter
The EMI filter should be used in the equipment that may generate strong EMI or the equipment
that is sensitive to the external EMI. The EMI filter should be a dual-way low pass filter through
which lower frequency current can flow while higher frequency current can hardly flow.
HD5L
Dedicated earthing pole
(optimal)
PE
PE
Sharing earthingpole
(good)
HD5LOtherdevices Otherdevices
PE
PE
HD5L HD5LOtherdevices
Otherdevices
Sharing earthingpole
(not so good)
Prohibitedearthing method
PE
PEPE PE
HD5L HD5L HD5L HD5L
4

hpmont : HD5L-4T5P5 Specifications

General

Brand	hpmont
Model	: HD5L-4T5P5
Category	Controller
Language	English