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Dual power supply operation, Power fail operation – Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module User Manual

Page 48

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Description of Features 4-21

1503-UM054C-EN-P – June 2013

Configuration

The IntelliVAC Plus Unit will be configured in one of two manners:

HIM

The standard means of configuring an IntelliVAC Plus shall be with

a hand-held configurator for DeviceNet (HIM).

It shall be possible to access all “Customer Use” parameters (need to

define Customer Use parameters) using the HIM. When accessed

via the HIM, parameters will be grouped/selected according to the

following – Control, Communications, Configuration & Diagnostics,

see Appendix B.

RS NetWorx Software

The IntelliVAC shall be configurable via DeviceNet, using RS

Networx software. This will include any parameters accessible via

the HIM. In addition, RS Networx shall be used to configure all

DeviceLogix function blocks. Please use RSNetWorx 8 or above to

support RTC setting.

Dual Power Supply Operation

The IntelliVAC Plus module is capable of operating on two different

power sources. The first of these sources is from the input power at

terminals TB1-TB2. This power source is used to generate the

internal DC voltages required for operation of the IntelliVAC Plus

module. The second power source is from the DeviceNet power, if it

is supplied. Operation of the IntelliVAC Plus module will always

operate from the input power at the TB1-TB2 terminals, if both

power sources are available. If only the DeviceNet power source is

available, then the IntelliVAC Plus unit will operate using this power

source. When the power source at the TB1-TB2 terminals is

available, then all of the features of the IntelliVAC Plus will be

operable. However, when only the DeviceNet power source is

available, then all of the operational features of the contactor, such as

closing the contactor coil, etc, will not be available. Only

communications over DeviceNet will be operable. All information

which requires RS485 communications will not be available. This

will also cease operation of the MC system.

Power Fail Operation

The internal 15VDC power supply will be monitored and failure of

this power rail will cause all RS485 communications to cease. With

a stand-alone IntelliVAC Plus unit only DeviceNet communications

will be operating, assuming that there is a DeviceNet power source.