GMW 231HC, User Manual

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3.3 - Electrical Connections
Even if the Amplifier was ordered as a complete system and assembled into a rack by GMW, it
is still recommended to follow and verify the following section as connections may have
loosened during shipment.
Refer to drawing 13907-0003-0, Rev. C for a detailed connection diagram.
3.3.1 - DC Supply and Electromagnet Connections
1. Connect the DC Supply to Amplifier Cable. Refer to drawing 16907-0030-0. This
cable provides the DC power, ground and interlock signals between the DC Power
Supply and the Amplifier. Ensure that ALL connections are tight, the polarity is
correct and the interlock cable is properly connected.
Warning: It is critical to ensure the correct polarity current connections
between the DC Supply and the Amplifier to avoid damage to the capacitor bank
which is polarity dependent.
2. Connect the Amplifier to Electromagnet Cable. Refer to drawing 16907-0031-0.
This cable provides the current, grounding and interlock signals between the
Amplifier and the Electromagnet. Again ensure that ALL connections are tight, the
polarity is correct and the interlock cable is properly connected.
3.3.2 - Amplifier Auxiliary Power
Connect the 115Vac or 220Vac power cord to the Amplifier. - This provides the Amplifier
with its required auxiliary power for the interlocks, computer interface, magnetic field sensor
and cooling fans.
3.3.1 - DC Supply Main Power
This procedure should be carried out by a qualified electrician.
1. Connect the DC Supply to the AC Mains service via an appropriate three-phase AC
power disconnect / breaker panel. The maximum input currents per phase are given
in Section 1, Specifications.
2. Ensure that the Electromagnet, Amplifier and DC Power Supply grounds are
connected. The DC Power Supply must be connected to the local service ground.
Refer to drawing 13907-0003-0.