American Magnetics 420 Power Supply Programmer - Manual (Page 44)

26 Rev. 7
Installation
High-Current Four-Quadrant Supply
f. Connect the power and control cables (11) between the control unit
and the Energy Absorber / Reversing Switch.
g. Connect the coaxial cable from the 352*5$0 287 connector on
the back of the Model 420 to the BNC connector attached to the
terminal strip on the rear of the power supply (12).
h. Install an instrumentation cable between the magnet support
stand top plate connector (13) and the magnet station connector
J7A or J7B.
i. Install an instrumentation cable between the LHe/Temp connectors
J8A and/or J8B on the rear of the Model 420 and the Model 13x
Liquid Helium Level Instrument and/or temperature instrument
(14).
j. Remote communications via IEEE-488 and/or RS-232 (or optional
RS-422) can be accomplished by connecting suitable cabling to J11
and/or J12, respectively.
2.5.5 High-Current Four-Quadrant Supply
For a true four quadrant power supply system, the components include
Model 420, a four quadrant power supply (typically an AMI Model
4Q05100PS), and associated interconnecting cabling. Figure 2-5 illustrates
the interconnects for an AMI Model 4Q05100PS power supply.
Connect the cabling in the following manner:
a. Connect the positive (+) power supply terminal (1) to the positive
vapor-cooled current lead (2) using 1/4-20 or similar hardware.
Note
The use of locking hardware is recommended for all high current
connections.
Caution
Do not overtighten the nuts on the current shunt terminals of the
Model 420 and output terminals of the 4Q05100PS (see the torque
specifications on page 7). Overtightening can result in damage to the
terminals.
b. Connect the negative vapor-cooled current lead (3) to the positive
(+) shunt terminal (4) on the back of the Model 420.
c. Connect the negative (
−
) shunt terminal (5) on the back of the
Model 420 to the negative (
−
) power supply terminal (6).