Yaskawa SmartTrac PS Card - Manual (Page 16)

SMART TRAC PS Card
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Testing Card Installation Technical Manual TM 3554-0030
Checking the Power Supply Output
1. Tag the Smart Trac AC1 "Out of Service."
WARNING WARNING
Take proper precautions when making the following system checks.
Hazardous voltages and amperage are present. The front door of the
Smart Trac AC1 must be open and power applied to the unit while
testing. Electrical shock or damage to the equipment may result if
precautions are not taken while testing the power supply. Failure to
comply may result in personal injury or death.
2. Open the door to the Smart Trac AC1. Do not touch components inside
unit.
3. Connect one lead of a digital multimeter to the common on the CN4
connector and the other lead to either +5V or +12V pins.
4. Read the multimeter. The +5V pin should read +4.5 volts to +5.5 volts.
The +12V pin should read +10.8 volts to +13.2 volts. If out of range,
replace the Smart Trac PS card.
NOTE: Negative pin (–5V or –12V) readings depend on your specific Smart
Trac AC1 system configuration and will typically deviate considerably (more
negative) from their –5V or –12V labels. Only the positive pins will give
consistent results system-to-system.
5. Close the door to the Smart Trac AC1.
6. Remove "Out of Service" tags.
7. Test operation of Smart Trac AC1.