Sel 421 - Figure 4.57 Setting 52 AA1: Terminal

U.4.67
Date Code 20090715 User’s Guide SEL-421 Relay
Basic Relay Operations
Operating the Relay Inputs and Outputs
Step 3. End the settings process. The relay next scrolls a readback of
all the Global settings, eventually displaying the
Save
settings (Y,N) ?
prompt.
a. In the readback information, just before the
Save
settings (Y,N) ?
prompt, confirm the new control
input information.
b. Answer Y <Enter> to save your new settings.
=>>SET M <Enter>
Breaker Monitor
Breaker Configuration
Breaker 1 Monitoring (Y,N) EB1MON := N ? <Enter>
Breaker 2 Monitoring (Y,N) EB2MON := N ? <Enter>
Breaker 1 Trip Type (Single Pole=1,Three Pole=3) BK1TYP := 1 ? 3 <Enter>
Breaker 2 Trip Type (Single Pole=1,Three Pole=3) BK2TYP := 1 ? 3 <Enter>
Breaker 1 Inputs
N/O Contact Input -BK1 (SELogic Equation)
52AA1 := NA
? IN101 <Enter>
Breaker 2 Inputs
A-Phase N/O Contact Input -BK2 (SELogic Equation)
52AA2 := NA
? IN102 <Enter>
Breaker Monitor
Breaker Configuration
EB1MON := N EB2MON := N BK1TYP := 3 BK2TYP := 3
Breaker 1 Inputs
52AA1 := IN101
Breaker 2 Inputs
52AA2 := IN102
Save settings (Y,N) ? Y <Enter>
Saving Settings, Please Wait...........
Settings Saved
=>>
Figure 4.57 Setting 52AA1: Terminal
Setting a Control Input for Circuit Breaker Auxiliary Contacts (52A):
ACSELERATOR QuickSet
The procedure in the following steps shows how to program the SEL-421
control input IN101 to read the state of circuit breaker auxiliary contacts. This
example uses a single three-pole tripping breaker. Modify the procedure listed
here for your application.
This example assumes that you have successfully established communication
with the relay (see Making an EIA-232 Serial Port Connection on page U.4.5).
In addition, you must be familiar with relay access levels and passwords (see
Changing the Default Passwords: Terminal on page U.4.9 to change the
default access level passwords). You should also be familiar with
ACSELERATOR QuickSet (see Section 3: PC Software).
Step 1. Configure the communications port.
a. Start
ACSELERATOR QuickSet.
b. On the top toolbar, open the Communication menu,
and then click Port Parameters.
You will see the Port Parameters dialog box similar to
Figure 4.7.
Courtesy of NationalSwitchgear.com