Setup And Testing - Unipower Bluestrak Series Operating Manual

P O W E R I N G T E C H N O L O G Y
19.0

SETUP AND TESTING

19.1 The BLUEstreak can be initially tested mounted in a rack or on a test bench. If two or more
units are to be tested in a rack, they should first be individually tested in Position 1 (left
side) of the rack.
With the input power source turned off, connect input power wires to the AC input terminals
19.2
of the mating interface board, the BLUEstreak mating connector or in the case of a power
shelf the input connector or terminal block on the A side of the rack. Make sure that the
safety ground wire is connected. Do not touch the output terminals when AC input power
is present.
Connect a resistive power load across the proper output pins, terminals or bus bars. The load
19.3
should be 20% to 50% of the full load value and can be either a power resistor or electronic
load set to the resistive mode. Make sure that the power resistor has adequate heat sinking
and cooling.
19.4 Connect a color-coded, twisted pair (22 or 24AWG) from the remote sense pins to the load.
The +Ve Sense must go to the positive side of the load and the –Ve Sense to the negative
side of the load. Also connect the Enable pin to the -Ve Sense. This must be done for the
unit to operate. When using the mating interface board or a power shelf, the Enable pin is
automatically connected to -Ve Sense. The units are then controlled by the Control inputs.
19.5 Checking Front Panel LEDs - With the BLUEstreak module on the bench or in Position
A of the power shelf, turn on (or plug in) the power source. The (top) green LED should
be on and the (bottom) red LED should be off. If either is not the case or one of the LEDs
is flashing see section 8.2 on page 8 of this manual to determine a possible cause.
Checking the Output Voltage - Measure the output voltage at its load with a digital voltmeter.
19.6
The voltage should be within ±1% of its nominal value.
19.7 Checking the Control Input - Unplug the input power source. Connect a wire from the
Control input to Standby Return. Turn the input power source back on. The green LED
should be flashing and the red LED should remain off. Check the output voltage with a
digital voltmeter. It should read zero volts.
Checking the AC OK and DC OK Signals - Next check the voltage on the AC OK pin
19.8
with respect to Standby Return. The voltage should be a logic LO, +0.5V or less. Finally,
check the voltage on the DC OK pin with respect to Standby Return. The voltage should
be a logic HI, approximately +5V. These signals need pull-up resistors to 5VSB using 10K
Ohm resistors.
Disconnect the wire from the Inhibit Standby return. The green LED should turn on. Check
the output voltage on the DC OK pin as described above. The voltage should be a logic
LO, +0.5V or less. Note that when using a mating interface board this may have LEDs
connected to these signals.
Document Number: BLUESTREAK-MAN Rev. 6
INSTALLATION & OPERATING MANUAL
Page 30
BLUESTREAK SERIES
bluestreak-man-rev6-0719.indd