Rockwell Automation Allen-Bradley 140U, Руководство по установке

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40752-195 (1)
Effective 2 /201 1
4-15 . The Remote Maintenance Mode is enabled by apply-
ing 24VDC to the two wire cable that exists the left side of the
breaker. The wires are color coded as follows: 24V
and Black=common ground. A blue colored LED on the left side
of the breaker is the Maintenance Mode section
of the trip unit . The lighted blue LED indicates that the
lowest setting of the Maintenance Mode is enabled. This setting
corresponds to 2.5x of In. Turning the adjustable switch on the
trip unit has no affect on either the Maintenance Mode or the
INST Mode settings while the blue LED is lit. In addition to the
blue colored LED, a relay contact (C, NO) is available. The wires
for this contact exit the left hand side of the breaker and are color
coded as follows: Blue=C, and Red=NO.
4-16 . The High Load Alarm Relay option will provide a SPST
contact closure when the trip unit current equals or is greater than
95% of In for a period of 38 seconds. If the current drops below
the 95% value, the contact will open. The yellow and green wires
that exit the right side of the breaker are the common (C) and nor
-
mally (NO) of this relay.
4-17 . The Ground Fault Relay option will provide a SPST con-
tact closure immediately before the breaker will trip on a ground
fault over current detect. This closure is momentary (50ms) and
the customer must provide the necessary external circuitry in or-
der to latch this signal. The yellow and green wires that exit the
right side of the breaker are the common (C) and normally (NO)
of this relay.
NOTE: Either the high Load Alarm Relay or the Ground Fault
Alarm Relay option can be selected but not both. The High
Load Alarm Relay can only be selected with LS and LSI trip unit
styles. If the trip unit is a Ground Fault style, the Alarm A Relay,
by default, will be selected.
NOTE: The contact rating of the relay is: 2A, 30 VDC
resistive load. The coil resistance is approximately
1600 ohms. (Max switching voltage: 220 VDC, Max switching
current: 2A). The coil resistance is about 1600 ohms.
+
-
NO
NC
- +
24 VOLT DC
LEFT SIDE OF BREAKER
YELLOW BLACK
BLUE
RED