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TPCMQ48 SERIES
INSTALLATION & OPERATING MANUAL
Manual No. tpcmq48-4
tpcmq48-man-rev4-0116.indd
Disconnect the wire from the Inhibit & Standby return. The Output Power Good LED should
turn on. Check the voltage on the Output Power Good pin as described above. The voltage
should be a logic LO, +0.5V or less. Check that the DC output with a digital voltmeter.
19.9
Testing other TPCMQ48 modules
- For a power shelf with two or three TPCMQ48
modules, the other modules should be plugged into Position 1 in the rack and tested in the
same manner as above in Sections 19.2 to 19.8.
19.10 Testing the Complete Power System
- With the input power source off or disconnected,
insert all TPCMQ48 modules into the power shelf. Connect a resistive power load of
approximately 80% of full load value for a single TPCMQ48 across the output. Connect
a color-coded, twisted pair of remote sense leads to the load, being careful to connect the
correct polarity.
Note the comments in section 9.2.1 regarding circuit breakers or fuses in the output power
feed.
19.11
Turn on or plug in the input power source. Check the voltage across the load with a digital
voltmeter. The voltage should be within about ± 1% of its nominal value. All LEDs should
be on.
19.12
While the rack is operating, disengage module 1 (left one) and check the output voltage. It
should be very close to the previous value and the Output Power Good LED should remain
on for module 2 (and 3) which are now carrying the load. Re-insert module 1 and repeat
the procedure by disengaging and re-engaging modules 2 and 3in turn. The complete power
shelf has now been shown to operate properly in the redundant mode with hot swapping.
