Basler Electric BE1-87T - Manual (Page 26)

2-2 BE1-87T Controls and Indicators 9171300990 Rev V
Letter Control or Indicator Function
F PUSH-TO-ENERGIZE
OUTPUT Switches Option
Two momentary pushbutton switches are accessible by
inserting a 1/8 inch diameter non-conducting rod
through access holes in the front panel. Switch R,
when actuated, closes the Restrained Output Relay
contacts. Switch U, when actuated, closes the
Unrestrained Output Relay contact(s).
NOTE
The optional Auxiliary Relay contacts (Option 3-1, 3-2
or 3-5) will also be operated by the PUSH-TO-
ENERGIZE switches if enabled by the two internal
Auxiliary Relay Control Switches. (Refer to LETTER I.)
G FUNCTION Targets Option Electronically-latched LED targets that indicate an
unrestrained or restrained output has occurred.
H Target Reset Switch Resets the electronically-latched targets.
I Auxiliary Relay Control
Switches Option
Two internal slide switches, S1 and S2, enable the
optional Auxiliary Output Relay to close only when a
restrained output occurs ( S1 ON), only when an
unrestrained output occurs ( S2 ON), or to close when
either output occurs ( S1 and S2 ON).
When shipped from the factory, the Auxiliary Relay will
be configured with S1 and S2 ON.
NOTE
The switches are located on the mother board and are
only accessible by withdrawing the relay case.
J ELEMENT Targets Option
(three-phase units ONLY)
Electronically-latching LED targets indicate the phase
that caused a trip operation.
K RESTRAINED PICKUP
LEVEL Switches
Thumb-wheel switches (one per phase element) are
used to adjust the desired percent of allowable
through-current restraint from 15 to 60 % in 5 %
increments. (Through-current is the greatest relative
individual input current.)
The through-current restraint characteristic is
individually adjustable for phases A, B, and C.
In a three-phase unit, all three switches are typically
kept at identical settings.
L UNREST. TRIP Indicator Red LED lights when there is an unrestrained pickup.
M REST. TRIP Indicator Red LED lights when there is a restrained pickup.
N M Indicator Red LED lights when the % OF TRIP pushbutton P is
pressed and the restraint current is below the slope
characteristic kneepoint as defined in Table 1-1. That
is, the relay will operate at minimum pickup (0 .35 times
tap).
O S Indicator Red LED lights when the % OF TRIP pushbutton P is
pressed and the restraint current is above the slope
characteristic kneepoint as defined in Table 1-1. That
is, the relay will operate based on the restraint
characteristic.
P Percent of Trip Pushbutton Pushbutton that is used to activate the % of TRIP
LEDs.