Rockwell-automation 193-EC4 EC4 Current Monitoring Relay User Manual Manual do Utilizador descarregar pdf (Página 44)

Rockwell Automation Publication 193-UM011A-EN-P - September 2010 45

Protective Trip and Warning Functions Chapter 3

• Bit 0 of Parameter 21, Device Status, will go to “1”

• The Trip Relay contact will open

• The outputs will be placed in their Protection Fault State (if so

programmed)

Comm Idle Warning

The EC4 Current Monitoring Relay will indicate a Comm Idle warning if:

• No warning currently exists

• Comm Idle Warning is enabled

• The network controller that is communicating to the EC4 Current

Monitoring Relay is placed in idle mode

When the Comm Idle warning conditions are satisfied, the following will occur:

• The TRIP/WARN LED will flash an amber 11-blink pattern

• Bit 10 in Parameter 15, Wa r n i n g S t a t u s , will go to “1”

• Bit 1 in Parameter 21, Device Status, will go to “1”

If a communication idle occurs and either Comm Idle Trip is not enabled or the

Pr FltState parameters are set to “Ignore”, the following will occur:

• The outputs will be placed in their Comm Idle State

Remote Trip

The Remote Trip function provided in series B and later devices allows the

capability of tripping the EC4 Current Monitoring Relay from a remote source

(for example, a vibration switch). Proper set-up requires that Remote Trip is

enabled in Parameter 24, Trip Enable, and that an input assignment (Parameters

83 – 86) is configured for Remote Trip.

When the remote trip condition sensor contact closes:

• The TRIP/WARN LED will flash a red 15-blink pattern

• Bit 14 in Parameter 14, Trip Status, will go to “1”.

• The Trip relay contact will open.

IMPORTANT

The Protection Fault state of OUT A and OUT B is defined by Parameter

65 (OUTA Pr FltState), Parameter 66 (OUTA Pr FltValue), Parameter 71

(OUTB Pr FltState), and Parameter 72 (OUTB Pr FltValue).

IMPORTANT

The Comm Idle State of OUT A and OUT B is defined by Parameter 69

(OUTA Dn IdlState), Parameter 70 (OUTA Dn IdlValue), Parameter 75

(OUTB Dn IdlState), and Parameter 76 (OUTB Dn IdlValue).

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Rockwell-automation 193-EC4 EC4 Current Monitoring Relay User Manual Manual do Utilizador Página 44