Specifications

1
POWERCASSETTE FRONT-END
OPERATING MANUAL
1.0 INTRODUCTION
This operating manual should be read through carefully before installing and
operating the PCM/TPCM Series PowerCassette®.
The PowerCassette is an advanced-design, front-end switching power supply that
employs a unique, new architecture which permits quick factory programming of its
output. There is a high current output and a 5VDC ¼ ampere independent standby
output. Maximum continuous output power is 650, 700 or 800 watts, with available
voltages of 12, 24 or 48VDC, respectively.
The PowerCassette front-end is ultra-compact, only 1.6 inches high, 5 inches wide
and 10 inches deep, producing up to 10 watts per cubic inch power density. The
unit comes in two versions: the PCM model which is the standard, non-hot-swap
version; and the TPCM model, which is the hot-swap version with a handle and
mounting bracket with jackscrews. See Figure 1. There is also an IEC AC input
connector with switch option and a reverse air flow option. Both of these have
reduced output capability.
PowerCassette incorporates control and monitoring features including enable and
inhibit inputs, AC power fail and DC power good signals, overtemperature warning
and remote sensing. The front panel has two LED status indicators: one for AC
Power Fail and the other for DC Power Good. The output has a single-wire, current
sharing capability.
Two 19-inch, 1U-high racks are available to hold two or three PowerCassette units
connected in parallel to give up to 800 watts with 1+1 redundancy or 1600 watts
with non-redundant operation for the two-unit rack or up to 1600 watts with 2+1
redundancy or 2400 watts with non-redundant operation for the three-unit rack. The
racks feature IEC60320 AC input connections.
2.0 FEATURES
The following is a summary of the important features of the PowerCassette front-
end:
u Includes Isolated 5V, ¼ A Standby Output
OPERATING MANUAL
PCM/TPCM SERIES PowerCassette®
NEXT GENERATION FRONT-END SWITCHER