Siemens 7SR242 Duobias - Section 3: Supervision Functions; 3.1 CB Fail (50 BF)

7SR242 Duobias Commissioning & Maintenance Guide
©2010 Siemens Protection Devices Limited Chapter 6 Page 47 of 57
Section 3: Supervision Functions
3.1 CB Fail (50BF)
Figure 3-1 CB Fail
Voltage Inputs: n/a
Current Inputs: W1-I
L1
(I
A
), W1-I
L2
(I
B
), W1-I
L3
(I
C
), I
G1
or W2-I
L1
(I
A
), W2-I
L2
(I
B
), W2-I
L3
(I
C
), I
G2
Disable:
Map Pickup LED: 50BF-n-n - Self Reset
The circuit breaker fail protection time delays are initiated either from:
A binary output mapped as Trip Contact in the OUTPUT CONFIG>BINARY OUTPUT CONFIG menu,
or
A binary input mapped as 50BF Ext Trip in the INPUT CONFIG>INPUT MATRIX menu.
Or
A binary input mapped as 50BF Mech Trip in the INPUT CONFIG>INPUT MATRIX menu.