147
Local LCD human machine interface
(LCD-HMI)
Chapter 10
Hardware modules
7
Local LCD human machine interface (LCD-HMI)
7.1
Application
The human machine interface is used to monitor and in certain aspects affect the way the product
operates. The configuration designer can add functions for alerting in case of important events
that needs special attention from you as an operator.
Use the terminals built-in communication functionality to establish SMS communication with a
PC with suitable software tool. Connect the PC to the optical connector on the local HMI with
the special front communication cable including an opto-electrical converter for disturbance free
and safe communication.
7.2
Design
Figure 36:
The LCD-HMI module
1. Status indication LEDs
2. LCD display
3.
Cancel
and
Enter
buttons
4. Navigation buttons
5. Optical connector
E
C
Ready
REx5xx Ver x.x
C=Quit
E=Enter menu
Start
Trip
2
3
1
5
4
xx00000712.vsd
Summary of Contents for REL 551-C1*2.5
Page 1: ...Technical reference manual ProtectIT Line differential protection terminal REL 551 C1 2 5 ...
Page 23: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 39: ...30 Technical data Chapter 2 General ...
Page 63: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 71: ...62 Line differential protection phase segregated DIFL Chapter 4 Line differential protection ...
Page 89: ...80 Thermal phase overload protection THOL Chapter 5 Current ...
Page 101: ...92 Event function EV Chapter 7 Logic ...
Page 163: ...154 Terminal diagrams Chapter 11 Diagrams Figure 39 REL 551 C1 with DC switch ...