LCD and LED Displays Displays during normal operation

When the GRD140 is operating normally, the green "IN SERVICE" LED is lit and the LCD is off.

Press the VIEW key when the LCD is off to display the digest screens which are "Indication",

"Metering1", "Metering2", "Metering3", "Metering4", "Metering5", "Latest fault",

"Auto-supervision" and "Alarm Display" screens in turn. "Latest fault", "Auto-supervision" and

"Alarm Display" screens are displayed only when there is some data. The following are the digest screens and can be displayed without entering the menu screens.

Indication

I N D 1 [ 0 0 0 0 0 0 0 0 ] I N D 2 [ 0 0 0 1 0 0 0 0 ] Metering 1

I a ∗ ∗ . ∗ ∗ k A

Not available for model 110 and APPL=1P setting in models 400 and 420.

Metering 2

I b ∗ ∗ . ∗ ∗ k A

Not available for model 110, and APPL=1P and 2P settings in models 400 and 420.

Metering 3

I c ∗ ∗ . ∗ ∗ k A

Not available for model 110 and APPL=1P setting in models 400 and 420.

Metering 4

I e ∗ ∗ . ∗ ∗ k A Metering 5

I s e ∗ ∗ . ∗ ∗ ∗ k A

Not available for model 400.

Metering 6

V a n ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ °

Available for APPL=3PN and 3PV settings in models 400 and 420.

Metering 7

V b n ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ °

Available for APPL=3PN and 3PV settings in models 400 and 420.

Metering 8

V c n ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ °

Available for APPL=3PN and 3PV settings in models 400 and 420.

Metering 9

V e ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ °

Metering 10

V 0 ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ ° Metering 11

V 1 ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ °

Not available for model 110.

Metering 12

V 2 ∗ ∗ ∗ . ∗ ∗ k V ∗ ∗ ∗ . ∗ °

Not available for model 110

Metering 13

f f ∗ ∗ . ∗ ∗ H z

To clear the latched indications (LEDs, LCD screen of Latest fault), press RESET key for 3 seconds or more.

For any display, the back-light is automatically turned off after five minutes.

Indication

This screen shows the status of elements assigned as a virtual LED.

I N D 1 [ 0 0 0 0 0 0 0 0 ] I N D 2 [ 0 0 0 1 0 0 0 0 ]

Status of element,

Elements depend on user setting. 1: Operate, 0: Not operate (Reset) Displays in tripping

Latest fault

P h a s e A B C E : Faulted phases. Not displayed for model 110 O C 1 : Tripping element

If a fault occurs and a tripping command is output when the LCD is off, the red "TRIP" LED and other configurable LED if signals assigned to trigger by tripping

Press the VIEW key to scroll the LCD screen to read the rest of messages.

Press the RESET key to turn off the LEDs and LCD display.

Notes:

1) When configurable LEDs (LED1 through LED3) are assigned to latch signals by trigger of tripping, press the RESET key more than 3s until the LCD screens relight. Confirm turning off the configurable LEDs. Refer to Table 4.2.1 Step 1.

2) Then, press the RESET key again on the "Latest fault" screen in short period, confirm turning off the "TRIP" LED. Refer to Table 4.2.1 Step 2.

3) When only the "TRIP" LED is go off by pressing the RESET key in short period, press the RESET key again to reset remained LEDs in the manner 1) on the "Latest fault" screen or other digest screens. LED1 through LED3 will remain lit in case the assigned signals are still active state.

Table 4.2.1 Turning off latch LED operation

LED lighting status

Operation "TRIP" LED Configurable LED (LED1 – LED3) Step 1 Press the RESET key more than 3s on

the "Latest fault" screen

continue to lit turn off

Step 2 Then, press the RESET key in short period on the "Latest fault" screen

turn off

When any of the menu screens is displayed, the VIEW and RESET keys do not function.

To return from menu screen to the digest "Latest fault" screen, do the following:

• Return to the top screen of the menu by repeatedly pressing the END key.

• Press the END key to turn off the LCD.

• Press the VIEW key to display the digest "Latest fault" screen.

Auto-supervision

E r r : R O M , A / D

If the automatic supervision function detects a failure while the LCD is off, the

"Auto-supervision" screen is displayed automatically, showing the location of the failure, and the

"ALARM" LED lights.

Press the VIEW key to display other digest screens in turn including the "Metering" and "Latest fault" screens.

Press the RESET key to turn off the LEDs and LCD display. However, if the failure continues, the "ALARM" LED remains lit.

After recovery from a failure, the "ALARM" LED and "Auto-supervision" display turn off automatically.

If a failure is detected while any of the screens is displayed, the current screen remains displayed and the "ALARM" LED lights.

Notes:

1) When configurable LEDs (LED1 through LED3) are assigned to latch signals by issuing an alarm, press the RESET key more than 3s until all LEDs reset except "IN SERVICE" LED.

2) When configurable LED is still lit by pressing RESET key in short period, press RESET _key again to reset remained LED in the above manner.

3) LED1 through LED3 will remain lit in case the assigned signals are still active state.

While any of the menu screens is displayed, the VIEW and RESET keys do not function. To

return to the digest "Auto-supervision" screen, do the following:

• Return to the top screen of the menu by repeatedly pressing the END key.

• Press the END key to turn off the LCD.

• Press the VIEW key to display the digest screen.

Alarm Display

Alarm Display (ALM1 to ALM4)

The four alarm screens can be provided, and their text messages are defined by user. (For setting, see Section 4.2.6.8) These alarms are raised by associated binary inputs.

Press the VIEW key to display other digest screens in turn including the "Metering" and "Latest fault" screens.

To clear the Alarm Display, press RESET key. The clearing is available after displaying up to ALM4.