Power Supply Check - Toshiba PROSEC T1-16S User Manual

10.1.1 Power supply check

If the PWR (power) LED is not lit after power on, check the following points.
Check the power connection
Correct
Check the power voltage
at the T1-16S's terminal
Normal
Remove the programmer
port connector
Still unlit
Remove the 24Vdc service
power terminals if it is used
Still unlit
Remove the I/O modules.
Lit
Confirm the internal 5Vdc
current consumption if
I/O module is used.
Within the limit
Insert the removed option
modules one by one to
pinpoint the faulty card.
10. Troubleshooting
Connection terminals are correct.
The terminal screws are not loose.
The terminal block is installed securely.
85 to 132/170 to 264Vac (50/60 Hz)
or 20.4 to 28.8Vdc (DC power)
If the PWR LED becomes normal, the
internal 5Vdc can be shorted in the
external connections of this port.
If the PWR LED becomes normal, the
24Vdc service power can be over load.
If the PWR LED is still unlit, the T1-16S
basic unit may be faulty. Replace the unit.
The 5Vdc capacity for I/O modules is
max. 1.5A.
(Refer to section 2.1.)
Replace the faulty I/O module.
Basic Hardware and Function
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