6F3B0250
3.I/O Application Precautions
(3)
The output circuit of the T1/T1S does not contain protective fuses. Fuses rated for the output should be provided by the user.
T1 output circuit
Load
Load
PS Fuse appropriate to
the common current
(4)Output surge protection
Where an inductive load is connected to the output, a relatively high energy transient voltage will be generated when the relay turns OFF. To prevent the problems caused by this surge, install a surge absorber in parallel to the inductive load.
T1 output circuit
Surge absorber:
Load
PS
Surge absorber
·Flywheel diode (for DC output)
Inverse withstand voltage: At least three times that of the power supply
Forward current: Larger than the load current
·Varistor (for AC output)
The voltage rating is 1.2 times the maximum (peak) voltage of the power supply
·CR snubber (for DC or AC output)
R: 0.5 to 1 W per volt coil voltage
C: 0.5 to 1 mF per ampere of coil current
66 T1/T1S User’s Manual
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