Omron S8AS, Руководство пользователя

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50
Power Supply and Input/Output Wiring
Section 3-3
• When inserting the wire, make sure that the stripped portion of the wire is
fully inserted and not left exposed.
• After completing a connection, lightly pull on the wire to make sure that it
has been locked in properly.
Wiring the External
Outputs and External
Tripping Input
The TRP, LOW, LFE, and TMP outputs operate as normally closed outputs,
which are OFF when the power is OFF, ON during normal operation, and OFF
when an error has occurred. If you want to use these an external output as a
normally open output, invert the signal through an auxiliary relay (X). When
doing so, the alarm may turn ON momentarily when the power supply is
turned ON. To prevent this, delay the signal through the delay relay (TR).
The branch output is cut off when the External Tripping Input (TRG) is ON
(connected).
No. Name Function
1 TRP Tripping Alarm
Output The photoswitch output turns OFF when the
branch output is cut off due to an abnormal
voltage or abnormal current.
2 LOW Undervoltage
Detection Output The photoswitch output turns OFF when the
output voltage drops below the set value.
3 LFE Maintenance
Forecast Monitor
Output The photoswitch output turns OFF when the
estimated replacement time drops below the
set value.
4 TMP Over-temperature
Output The photoswitch output turns OFF when the
S8AS's internal temperature exceeds the
over-temperature output threshold.
5 COM Output Common Common terminal for the four outputs
described above.
6 TRG (+) External Tripping
Input
Branch outputs can be cut off from an exter-
nal operation. (The shutdown sequence is
applied in this case.)
7 TRG (
−
)
TRP LOW LFE TMP COM TRG(+) TRG(
−
)
X1 X2 X3
X4
TR
X1 X2 X3 X4
TR
Delay Relay
Tripping Alarm Output Undervoltage Detection Output Maintenance Forecast Monitor Output
Over-temperature Output
Output Common
Positive Tripping Input (+) Negative Tripping Input (
−
)
Tripping Input
*
*
Output terminals do not have polarity.