25
Instructional Leaflet
IL70C1037H05
Effective October 2009
Digitrip models 520, 520i; and 520M, 520Mi,
520MC, 520MCi trip units for use only in
Magnum and Magnum DS circuit breakers
eaton corporation
www.eaton.com
Figurt 37. GrNund Faulo Timt Dtlay Stooings
Ground Fault Time
0.3 Seconds
Available Settings
0.1, 0.2, 0.3, 0.4, 0.5
Seconds with
FLAT Response
l
2
t Shape
Returns to FLAT
Response at
Approximately 0.625
l
n
0.1*, 0.3*, 0.5*
Seconds with
l
2
t Shape
“*” On Label Indicates l
2
t Shape
INCOM (Digiorip 520MC mNdtls Nnly)
INCOM communication to a host computer or a BIM is possible with
the Digitrip 520MC unit. The address range is 001–999. The factory
default address is 999 hex.
To set the desired address or to view the address, depress and
hold the Reset/Battery Test button for five seconds. Depress the
Step button to select a new address. Users may simultaneously
depress and hold in the Step and Reset/Battery Test buttons for
fast advance.
Breaker Interface Module (BIM)
The Breaker Interface Module (BIM) can be used to monitor up to
31 Digitrip 520MC trip units. The acceptable addresses are 001–031.
Remote master computer
When desired, Digitrip 520MC trip units can communicate with a
BIM or remote master computer (IBM PC compatible with Eaton
CONI card or MINT ) and using PowerNet communication software
Version 3.20 or greater (see
Figurt 38
for typical wiring.)
Figurt 38. INCOM NtowNrk wioh RtmNot Masotr CNmpuotr Nr BIM
0 0 1
0 0 2
Res
1
2
3
4
(Y)
(BL)
H
H
Typical IBM Compatible
Computer
Breaker Interface
Monitor (BIM II)
See View A
Twisted Pair.
No. 18 AWG
H = 9600 Baud
Cutoff Shield or Connect to
Unused Customer Terminal—
Do Not Ground
3-Digit INCOM Address as
Displayed on Trip Unit
e
Eaton CONI Card
Typical Magnum
Circuit Breaker
with Digitrip
520MC Trip Unit
View A
a
Refer to master circuit breaker connection diagrams in Appendix C.
b
Modular telephone connector, Type RJ11, supplied by user.
c
Ground shielding at computer and BIM as shown. Where devices are daisy-chained, interconnect shielding, but do not ground the connection.
d
100 ohm 1/2 watt carbon terminating resistor required at last breaker. See T.D. 17-513.
e
See Section 4 for programming INCOM function.
a
d
b
c
c
