Planning the electrical installation
38
Protecting the relay output contacts and attenuating disturbances in case
of inductive loads
Inductive loads (relays, contactors, motors) cause voltage transients when switched
off.
The relay contacts on the RMIO board are protected with varistors (250 V) against
overvoltage peaks. In spite of this, it is highly recommended to equip inductive loads
with noise attenuating circuits [varistors, RC filters (AC) or diodes (DC)] in order to
minimize the EMC emission at switch-off. If not suppressed, the disturbances may
connect capacitively or inductively to other conductors in the control cable and form
a risk of malfunction in other parts of the system.
Install the protective component as close to the inductive load as possible. Do not
install protective components at the RMIO board terminal block.
24 VDC
230 VAC
X25
1
RO1
2
RO1
3
RO1
X26
1
RO2
2
RO2
3
RO2
X27
1
RO3
2
RO3
3
RO3
Relay outputs
RMIO
230 VAC
Diode
Varistor
RC filter
Содержание ACS800-02
Страница 1: ...ACS800 Hardware Manual ACS800 02 Drives 45 to 500 kW ACS800 U2 Drives 60 to 600 HP ...
Страница 4: ......
Страница 10: ...Safety instructions 10 ...
Страница 20: ...About this manual 20 ...
Страница 26: ...The ACS800 02 U2 26 ...
Страница 42: ...Planning the electrical installation 42 ...
Страница 76: ...Installation checklist 76 ...
Страница 106: ...Technical data 106 ...
Страница 107: ...Dimensional drawings 107 Dimensional drawings The dimensions are given in milllimetres and inches ...
Страница 108: ...Dimensional drawings 108 Frame size R7 US gland conduit plate 64579746 H ...
Страница 109: ...Dimensional drawings 109 Frame size R8 3AFE 64564161 D US gland conduit plate ...
Страница 110: ...Dimensional drawings 110 Frame size R7 with enclosure extension bottom entry 64625942 1 2 B ...
Страница 111: ...Dimensional drawings 111 64625942 2 2 C ...
Страница 112: ...Dimensional drawings 112 Frame size R7 with enclosure extension top entry 64626264 1 2 C ...
Страница 113: ...Dimensional drawings 113 64626264 2 2 C ...
Страница 114: ...Dimensional drawings 114 Frame size R8 with enclosure extension bottom entry 3AFE 64626388 1 2 B ...
Страница 115: ...Dimensional drawings 115 3AFE 64626388 2 2 B ...
Страница 116: ...Dimensional drawings 116 Frame size R8 with enclosure extension top entry 3AFE 64626370 1 2 C ...
Страница 117: ...Dimensional drawings 117 3AFE 64626370 2 2 C ...
Страница 118: ...Dimensional drawings 118 ...
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