S-11
(subsection 4.2.3, page 4-5)
CAUTION
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When wiring a pulse counter module, be sure to wire it with a shielded
twisted-pair cable and ground the cable by Class D grounding.
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The shielded twisted-pair cable must be laid at least 30 centimeters away from
noise sources, such as power cables and input/output cables. Never lay it in
parallel with those noise sources, and the length of the cable laid must be
shortest possible.
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If a counting error occurs in the pulse counter module that has been wired
according to the above rules, lay the shielded twisted-pair cable in a special
duct or conduit, and then ground the duct or conduit.
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Any input terminals that need not be used must be wired as follows:
•
If the pulse counter module is used with one-phase pulse input, short the two
input terminals of each of the two pairs of two-phase pulse input terminals;
that is, short A1S and A1C together, then short B1S and B1C together, and
then ground them all together.
•
If it is used with two-phase pulse input, short the one-phase pulse input
terminals A2S and A2C together and then ground them together.
•
If the stop-signal input terminals STOPS and STOPC need not be used,
short them together and then ground them together.
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A pulse generator may be connected to the pulse counter module by using
either voltage-transistor connection or no-voltage-transistor connection (see
below). Voltage-transistor connection should be used when grounding is
made on the pulse generator side. No-voltage-transistor connection should
be used when grounding is made on the pulse counter module side.
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Do not connect a contact to any pulse input terminal. Disregarding this rule
may result in counting errors due to contact bouncing during closing and
opening of the contact.
Voltage-transistor connection
Voltage-contact connection (prohibited)
No-voltage-transistor connection
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Pulse counter module
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Pulse counter module
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Pulse counter module
Содержание S10mini LQS070
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Страница 30: ...1 BEFORE USE ...
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Страница 38: ...2 KINDS AND SPECIFICATIONS OF I O MODULES ...
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Страница 144: ...4 HANDLING ...
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Страница 180: ...5 HANDLING I O DATA ON J NET ...
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Страница 192: ...7 MAINTENANCE ...