1–2
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 1: GETTING STARTED
1.1.3
Manual Organization
Reading a lengthy instruction manual on a new product is not a task most people enjoy. To
speed things up, this introductory chapter provides guidelines for basic relay usability.
Important wiring considerations and precautions discussed in
page 3–9 should be observed for reliable operation. Detailed information regarding
accuracy, output relay contact ratings, and so forth are detailed in
2–6. The remainder of this manual should be read and kept for reference to ensure
maximum benefit from the 489 Generator Management Relay. For further information,
please consult your local sales representative or the factory. Comments about new
features or modifications for your specific requirements are welcome and encouraged.
Setpoints and actual values are indicated as follows in the manual:
A4 MAINTENANCE
ZV
TRIP COUNTERS
Z
TOTAL NUMBER OF TRIPS
This ‘path representation’ illustrates the location of an specific actual value or setpoint with
regards to its previous menus and sub-menus. In the example above, the
TOTAL NUMBER
OF TRIPS
actual value is shown to be an item in the
TRIP COUNTERS
sub-menu, which itself
is an item in the
A4 MAINTENANCE
menu, which is an item of
ACTUAL VALUES
.
Sub-menu levels are entered by pressing the
MESSAGE
X
or
ENTER
key. When inside a
submenu, the
W
MESSAGE
or
ESCAPE
key returns to the previous sub-menu. The
MESSAGE
T
and
MESSAGE
S
keys are used to scroll through the settings in a sub-menu.
The display indicates which keys can be used at any given point.
