14.51
Date Code 20060320 Instruction Manual SEL-311C Relay
Application Settings for SEL-221 Series Relays
SEL-221-16 to SEL-311C Settings Conversion Guide
appropriate SEL-221-16 Relay Word bit equivalent expression (Table 14.30)
and enter the resultant expression in the related SEL
OGIC control equation
(Table 14.29).
For example, the factory default setting for MRC in the SEL-221-16 is shown
in Table 14.31. From Table 14.29, the equivalent SEL-311C SEL
OGIC control
equation to MRC is 79DTL. Constructing the logical OR of the equivalent of
each element selected in the MRC mask from Table 14.30 gives:
79DTL = Z3T + 51GT
Include the open command OC:
79DTL = Z3T + 51GT + OC
This is the default SEL
OGIC control equation for 79DTL when APP = 221-16.
When setting APP = 221-16, the SEL-311C automatically sets the following
SEL
OGIC control equations. Change the settings just as you would change the
Mask Logic settings in an SEL-221-16 to customize the relay logic.
Ta ble 1 4. 30 SE LOGIC Equivalent to SEL-221-16 Relay Word Bits
SEL-221-16 Relay Word Bit
Equivalent SEL-311C
SEL
OGIC Expression
Z1P M1P
Z1G Z1G
Z2PT M2PT
Z2GT Z2GT
Z3 M3P + M3G
Z3T Z3T
3P21 M3P * !32QF
32Q 32GF + 32QF
67N 67G1
51NP 51G
51NT 51GT
50NG None
50P None
50H 50P1
IN1 IN101
REJO None
LOP ILOP
TRIP TRIP
Table 14.31 Default SEL-221-16 Mask Logic Setting for MRC
Z1P Z1G Z2PT Z2GT Z3 Z3T 3P21 32Q
00000100
67N 51NP 51NT 50NG 50P 50H IN1 REJO
00100000
LOP TRIP
00
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