Emerson ROC364 Manual de Instruções descarregar pdf (Página 27)

ROC364 Instruction Manual

2-13 Master Controller Unit, I/O Module Rack, and Wiring Rev Jun/05

Table 2-2. MCU LED Indicators

Indicator LED Meaning

On Power is applied to the MCU.

POWER

Off

MCU does not have power. Possible causes are:

♦ Power not present at power terminals.

♦ Power switch is off if so equipped (older units only).

♦ Defective power switch (older units only).

♦ Fuse F1 is open.

♦ Fuse F4 is open.

♦ Polarity reversed.

On Successful startup and the processor is running.

Blinking

♦ Processor is not running and the controller is attempting to restart.

♦ Possible low battery or bad FlashPAC.

SYSTEM

STATUS

Off

If the POWER indicator is on, indicates insufficient voltage is available to power up

the MCU.

On System voltage is present at the AUX PWR OUT 1 terminals.

AUX OUT 1

Off Fuse F2 is open or the output has been disabled by the software.

On System voltage is present at the AUX PWR OUT 2 terminals.

AUX OUT 2

Off Fuse F3 is open or the output has been disabled by the software.

2.5.2 RAM Backup Procedure using ROCLINK Configuration Software

Before removing power to the ROC, perform the following procedure to avoid losing the ROC

configuration and other data stored in RAM.

User programs cannot be saved out of the ROC. Reload user programs from their original disk files as

instructed in the ROCLINK for Windows Configuration Software User Manual (Form A6091) or the

ROCLINK 800 Configuration Software User Manual (Form A6121).

When installing devices in a hazardous area, make sure each device is labeled for use in such

areas. Procedures involving switching power on or off, or procedures for installing or removing

any wiring or components, must be performed only when the area is known to be non-hazardous.

Performance of these procedures in a hazardous area could result in personal injury or property

damage.

To avoid circuit damage when working with the ROC, use appropriate electrostatic discharge

precautions, such as wearing a grounded wrist strap.

1. Save the current configuration data by selecting ROC > Flags > Write to EEPROM or Flash

Memory Save Configuration. This action saves most of the ROC configuration (but not logs or

FST programs) into the permanent memory accessed when a Cold Start is performed.

2. Save the current configuration data to disk by using the Download > Save ROC Configuration

To Disk function. When replacing or upgrading a FlashPAC, the only way to preserve

configuration data is to save the data to disk and then retrieve the information after the FlashPAC

is installed.

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