Chapter 11. Troubleshooting
11-10
Output circuit troubles and corrective actions (continued).
The load off
response
time is long.
Over current at off state [The large
solenoid current fluidic load (L/R is large)
such as is directly driven with the transistor
output.
The off response time can be delayed by
one or more second as some loads make
the current flow across the diode at the off
time of the transistor output.
Insert a small L/R magnetic contact and
drive the load using the same contact.
Output
destroyed.
Surge current of the white lamp
A surge current of 10 times or more when
turned on.
To suppress the surge current make the
dark current of 1/3 to 1/5 rated current flow.
R
Sink type transistor output
Source type transistor
output
Outpu
Loa
R
Outpu
Loa
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