Toshiba H9 operation manual Conductor Routing and Grounding, Grounding Capacitor Switch

Conductor Routing and Grounding

WARNING

•Use separate metal conduits for routing the input power, output power, and control circuits and each shall have its own ground cable.

•A separate ground cable should be run inside the conduit with the input power, output power, and and control circuits.

•DO NOT connect CC to earth ground.

•Use IICC terminal as the return for the V/I input.

•Always ground the unit to prevent electrical shock and to help reduce electrical noise.

•It is the responsibility of the person installing the H9 ASD or the electrical maintenance personnel to provide proper grounding and branch circuit protection in accordance with the 2005 NEC and any applicable local codes.

T h e M e t a l O f C o n d u i t I s N o t A n A c c e p t a b l e G r o u n d .

Grounding Capacitor Switch

The H9 ASD is equipped with leak reduction capacitors which are used to reduce the EMI leakage via the 3-phase power-input circuit and for compliance with the Electromagnetic Compatibility Directive (EMC).

The effective value of the capacitor may be increased, reduced, or removed entirely via the Selector Switch, Switching Bar, or the Switching Screw — the type used is typeform-specific.

The Grounding Capacitor Switch allows the user to quickly change the value of the leakage-reduction capacitance of the 3-phase input circuit without the use of tools.

See the section titled Power Connection Requirements on pg. 17 for more on the Grounding Capacitor.

See figures 4, 5, 6, and 7 on pg. 19 an electrical depiction of the leakage-reduction functionality of the Grounding Capacitor and the methods used to set the capacitance value.

The H9 ASD is equipped with a noise reduction capacitor which is used to reduce the noise of the 3- phase input circuit. The capacitor may be removed from the circuit electrically using the Grounding Capacitor Switch (see Figure 2 on pg. 16).

The switch has a push-pull activation mechanism. From the front of the unit, push the actuator to place the noise reduction capacitor into the circuit. Pull the actuator to remove the noise reduction capacitor from the circuit.

H9 ASD Installation and Operation Manual 5