Overview; Design; Functionality; Keypad And Keys - NR Electric PCS-9611 Instruction Manual

8.1 Overview

Human machine interface (HMI) is an important component of the equipment. It is a convenient
facility to access the relay from the front local control panel of this relay to view desired information,
such as measurement quantity or binary inputs' state or program version etc. or modify some
system settings or protection settings. This function is very helpful during commissioning before
putting the equipment into service.
Furthermore, all above functions can be realized in a remote terminal with special software
through a communication bus via a RS-485 port or an Ethernet port.
This chapter will describe human machine interface (HMI), menu tree and LCD display of the
equipment. In addition, how to input settings using keypad is described in detail.

8.1.1 Design

The human machine interface consists of a human machine interface (HMI) module which allows
the communication as simple as possible for the user. The HMI module includes:

A 240×128-dot matrix backlight LCD visible in dim lighting conditions for monitoring status,
fault diagnostics and setting etc.

Twenty LED indicators on the front panel of this relay for denoting the status of this protection
operation, the color and trigger condition of each LED can be configured through
PCS-Explorer.

A 9-key keypad on the front panel of the device for full access to the device.

An Ethernet interface special for the PCS-Explorer configuration tool; for more details, see the
PCS-Explorer online help brochure or the PCS-Explorer configuration tool instruction manual.

Three buttons and a remote/local control switch with two LED indicators for controlling circuit
breaker and releasing the interlock check logics, if the front panel with control buttons is
selected.
The front panel of the device is shown in Figure 6.1-2 and Figure 6.1-3.

8.1.2 Functionality


The HMI module helps to draw your attention to something that has occurred which may
activate a LED or a report display on the LCD.

You as the operator may have own interest to view a certain data.

Use menus navigate through menu commands and to locate the data of interest.

8.1.3 Keypad and Keys

The keypad and keys on the front panel of the equipment provide convenience to the operator to
view a certain data or change the device's setting. The keypad contains nine keys, and each key
has different function to the other one.
PCS-9611 Feeder Relay
Date: 2014-04-08
8 Human Machine Interface
8-1