SECTION 4 OPERATION
79
4.6.1 SYSTEM ARCHITECTURE
The ASX-Series Power Source output can be configured for single, split, and three phase voltage
forms. Figure 4.6.1 is a simplified block diagram of the possible output architectures. Only the
direct-coupled output forms are shown. All of the forms can be supplied with transformers to raise
the output voltage level.
The 1 PHASE mode of operation is a one vector output form. All of the power amplifier PCB's are
connected in parallel to form one output vector. The standard, direct-coupled version of this output
form is capable of 0-132 VAC
l-n
(Models 115, 160, 315, and 360-ASX), 0-135 VAC
l-n
(Models 140,
345, and 3120-ASX), or 0-150 VAC
l-n
(Models 120-ASX and 320-ASX). The voltage ranges of the
various transformer output forms are: VR1.5 - 0 to 198 V
l-n
(Models 115, 160, 315, and 360-ASX)
or 0 to 203 V
l-n
(Models 140, 345, and 3120-ASX), VR2.0 - 0 to 264 V
l-n
(Models 115, 160, 315, and
360-ASX) or 0 to 270 V
l-n
(Models 140, 345, and 3120-ASX), and VR2.5 - 0 to 330 V
l-n
(Models 115,
160, 315, and 360-ASX) or 0 to 338 V
l-n
(Models 140, 345, and 3120-ASX).
The 2 PHASE mode of operation is a two vector output form where the vectors are separated by
180
°
and equal in amplitude. This output form uses power amplifiers in pairs, one for each vector.
The load can be attached from either line to neutral, line to line or a combination of both. The
standard, direct-coupled version of this output form has a voltage range of 0-264 VAC
l-l
(Models
160-ASX, 315-ASX and 360-ASX), 0-270 VAC
l-l
(Models 140, 345, and 3120-ASX), or 0-300 VAC
l-l
(Models 120-ASX and 320-ASX). The voltage ranges of the various transformer output forms are:
VR1.5 - 0 to 396 V
l-l
(Models 160-ASX, 315-ASX and 360-ASX) or 0 to 405 V
l-l
(Models 140, 345,
and 3120-ASX), VR2.0 - 0 to 528 V
l-l
(Models 160-ASX, 315-ASX and 360-ASX) or 0 to 540 V
l-l
(Models 140, 345, and 3120-ASX), and VR2.5 - 0 to 600 V
l-l
(Models 140, 160, 315, 345, 360, and
3120-ASX). Note that in the case of the Models 315, 320, 345 and 360-ASX, only two of the three
power amplifiers are connected limiting these systems to producing only two-thirds of rated output
power in this configuration.
NOTE: The ASX-Series Power Sources do not support voltages in excess of 600 VAC
rms
due to
controller, safety, and spacing limitations. Attempting to defeat the inherent programming
limitations of the conroller to obtain higher voltages is strongly recommended against.
The 3 PHASE mode of operation is a three vector output form with vectors normally separated by
120
°
. Power amplifiers are supplied in groups of three with this output form and are WYE
connected. A WYE load is connected across the A, B, C, and Neutral terminals of the output
terminal block. This output form will also drive DELTA loads. DELTA loads are simply connected
across the A, B, and C terminals of the output terminal block with the Neutral terminal not
connected. The standard, direct-coupled version of this form has an output voltage range of 0 to
132/229 VAC (Models 315-ASX and 360-ASX), 0 to 135/234 VAC (Models 345-ASX and
3120-ASX), or 0 to 150/260 VAC (Model 320-ASX). The voltage ranges of the various transformer
output forms are: VR1.5 - 0 to 198/343 VAC (Models 315-ASX and 360-ASX) or 0 to 203/352 VAC
(Models 345-ASX and 3120-ASX), VR2.0 - 0 to 264/457 VAC (Models 315-ASX and 360-ASX) or
0 to 270/468 VAC (Models 345-ASX and 3120-ASX), and VR2.5 - 0 to 330/572 VAC (Models
315-ASX and 360-ASX) or 0 to 338/585 VAC (Models 345-ASX and 3120-ASX).
