Schweitzer Engineering Laboratories SEL-749M, Instruction Manual

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8.8
SEL-749M Relay Instruction Manual Date Code 20080918
Front-Panel Operations
Human-Machine Interface
Start Motor
Asserts Relay Word STR to initiate a motor start (see
Figure 4.23 )
Output Contacts
Use the
Output Contacts
menu item to test
SEL-749M output contacts and associated circuits. You can pulse the
selected Relay Word bit associated with the contact outputs from this
menu (see
Figure 4.32 for a typical output logic).
Reset TCU
: Resets the thermal capacity used (see Thermal
Overload Element on page 4.4 for description).
Set/Show Menu
The SEL-749M settings are arranged in easy-to-understand categories. The
settings structure simplifies relay setting. Access the settings class (relay,
global, port, or front-panel) required by performing the following steps, which
are similar to the entry of the appropriate
SET/SHOW command:
Step 1. Select the
Set/Show
menu item on the
MAIN
menu to view or
modify the settings (refer to SEL-749M Menu Structure on
page 8.5 ).
Step 2. Select the settings class, date/time, or password settings from
the
SET/SHOW
menu.
Each settings class includes headings that create subgroups of associated
settings. These headings are displayed in the settings screen captures in
Section 6: Settings . Select the heading that contains the setting of interest. An
example of the
RELAY
headings is shown in Figure 8.6 .
Figure 8.6 RELAY Heading Example
Navigate to the setting of interest. View or edit the setting by pressing
{ENT}
.
For text settings, use the four navigation pushbuttons to scroll through
available alphanumeric and special character settings. For numeric settings,
Press the {ENT} pushbutton to pulse the out-
put.
The LCD displays a password screen if a
password is required. Enter your Level 2
password.
Press the {Right Arrow}
to select Yes and then press {ENT} .
OUTPUT CONTACTS
Pulse OUT101
Password=
Del Clr Accept
Pulse OUT101
No Yes
RELAY
Main Settings
RID
TID
CTR1
FLA1
...
Courtesy of NationalSwitchgear.com