Toshiba GRL150-100 Series Instruction Manual page 55

The MPU implements more than 240 MIPS and uses a RISC (Reduced Instruction Set Computer)
type 32-bit microprocessor.
The SPMP module also incorporates 2 auxiliary relays TP1 and TP2 for tripping, 6 auxiliary
relays (BO1-BO5 and FAIL) for binary output signals and an RS485 transceiver.
TP1 and TP2 have two normally open contacts.
BO1 to BO4 are user configurable output signals and each has one normally open contact. BO5 is
also a user-configurable output signal and has one normally open and one normally closed contact.
The auxiliary relay FAIL has one normally open and one normally closed contacts, and operates
when a relay failure or abnormality in the DC circuit is detected.
The RS485 transceiver is used for the link with the relay setting and monitoring (RSM) system or
IEC60870-5-103 communication. The external signal is isolated from the relay's internal circuits.
Human Machine Interface (HMI) Module
The operator can access the GRL150 via the human machine interface (HMI) module. As shown
in Figure 3.1.1.3, the HMI panel has a liquid crystal display (LCD), light emitting diodes (LED),
view and reset keys, operation keys, monitoring jacks and an RS232C connector on the front
panel.
The LCD consists of 16 columns by 2 rows with a back-light and displays recording, status and
setting data.
There are a total of 6 LED indicators and their signal labels and LED colors are defined as follows:
Label Color
IN SERVICE Green
TRIP Red
ALARM Red
(LED1) Yellow
(LED2) Yellow
(LED3) Yellow
LED1, LED2 and LED3 are user-configurable. Each is driven via a logic gate which can be
programmed for OR gate or AND gate operation. Further, each LED has a programmable reset
characteristic, settable for instantaneous drop-off, or for latching operation. For the setting, see
Section 4.2.6.10. For the operation, see Section 4.2.1.
The VIEW key starts the LCD indication and switches between windows. The RESET key
clears the LCD indication and turns off the LCD back-light.
The operation keys are used to display the record, status and setting data on the LCD, input the
settings or change the settings.
The monitoring jacks and two pairs of LEDs, A and B, on top of the jacks can be used while the
test mode is selected in the LCD window. Signals can be displayed on LED A or LED B by
selecting the signal to be observed from the "Signal List" and setting it in the window and the
signals can be transmitted to an oscilloscope via the monitoring jacks. (For the "Signal List", see
Appendix B.)
The RS232C connector is a 9-pin D-subminiature connector for serial RS232C connection. This
connector is used for connection with a local personal computer.
Remarks
Lit when the relay is in service and flickered when the relay is in "Test" menu.
Lit when a trip command is issued.
Lit when a failure is detected.
Configurable LED to assign signals with or without latch when relay operates.
Configurable LED to assign signals with or without latch when relay operates.
Configurable LED to assign signals with or without latch when relay operates.
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