Basler Electric BE1-50/51B - Manual (Page 32)

3-2 BE1-50/51B Functional Description 9252000991 Rev R
Outputs
System circuit breakers controlled by the output contacts can be manually tripped by applying a short
across the TIME or INST MANUAL TRIP front panel test points. Current flow in the trip circuit is indicated
by the operation of the target. The targets will not operate without adequate operating power for the relay.
Instantaneous and Timed
WARNING!
Trip circuit voltage is present at the front panel test points. When shorting the
test points, use insulated jumpers to avoid contact with these voltages.
The auxiliary output contacts can be configured by the user to close when the timed and/or instantaneous
trip occurs. With both jumpers installed (this is the factory setting) either the timed or instantaneous trip
closes the auxiliary contacts. Effective with unit revision S, in units 9252000100 through 9252000109, the
printed circuit board was changed. Now, the PCB for 100 and 200 series relays are similar. Users with
units before revision R may see Section 6, Relay Differences, for installing auxiliary output contact
jumpers.
Auxiliary
Figure 3-1. Functional Block Diagram
POWER
CT SUPPLY
POWER
BRIDGE
CT
SIGNAL
TIME
SCALE
INST
SCALE
MUX
SW SW SW SW
TIME
PICKUP
INST
PICKUP
SW SW SW
DOG
WATCH
SUPERVISOR
MICRO
51
50
TIME
DIAL
TIME
CURVE
50/60 Hz
INST DELAY
TP
TP
AUX
ISOLATION
TARGETS
MAGNETIC ACTIVE/PICKUP
51
50
INPUT
GND
D1181-09
2
3
6
5
4
7
8
9
AND
A/D
CONVERTER
POWER-OFF
SENSING
SERIES 200 RELAYS ONLY
SW
RESET CHAR.
51 50