Kikusui PFX2731S, Operation Manual

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14
Operation Manual
PFX2731S
Preparation
Using System Protection Functions
This product has functions for protecting the system.
You can cancel the ongoing test externally by using the external alarm terminal or the protective
equipment (that goes into action in the event of an abnormality in a device).
SIGNAL I/O specifications
The SIGNAL I/O terminals on the product’s rear panel enable the following control operations:
• External monitoring of the alarm state
• Alarm input using an external contact
 Cables and tools that are necessary to make the connection
External monitoring of the alarm state (ALARM OUT)
An alarm output is available for monitoring the alarm state. The alarm output is the open collector output of
photocouplers and is isolated internally.
The isolation voltage of the alarm output is within ±50 V. Use the alarm output within that range.
Alarm input using an external contact (ALARM IN)
You can cancel the test using an external contact.
To apply an alarm signal, short the contact switch for at least 0.5 s.
The maximum ratings for the alarm input terminal are as follows:
• Maximum voltage: 30 V
• Maximum current (sink): 8 mA
Cables (stranded wires)
AWG24 to AWG20 (0.20 mm
2
to 0.52 mm
2
)
Flat-blade screwdriver Core diameter: Ø 3, blade tip width: 2.6 mm
Wire stripper A wire stripper that matches the wires listed above
Signal Description
COM+ External alarm common A common for external alarm input.
ALARM IN External alarm input Apply a low level signal to abort test execution.
ALARM OUT External alarm output When the test is canceled, the system outputs the
LOW level signal.
COM- External alarm common A common for external alarm input.
RSV Preliminary signal output Not used.
7 mm
SIGNAL I / O
IN
OUT
COM
+
COM
-
ALARM
RSV
SIGNAL I/O connector
Use this screw to fix the
wire in place.
Remove the first 7 mm of
the wire’s covering, and
then insert the wire here.