Teknic EF-785, Руководство по установке

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28
V
E R S I O N
1 . 4 2 / A
U G U S T
2 6 , 2 0 0 5
F6
24VDC Ckt. 3
10A Max. 40VDC
ControlPoint
TM
24VDC
Safety
F7 F8 F10 F9
DC Servo Main
15A Max.
DC Servo Option
15A Max.
CB2 CB3
Status
24VDC Ckt. 2
10A Max.
24VDC Ckt. 1
10A Max.
SAFETY ALARM
Do not operate or service
machine if sounding
eFoundation- Power Distribution & Safety Control Center
CB1, UL489 Rated Input Breaker
10,000A Interrupting
When installed according to the
accompanying instructions this unit meets:
- UL 508
- EN 61010
- EN 60204
- EN 954-1 (Class 2)
- Semi S2
- EN 50081-2
- EN 50082-2
Teknic, Inc.
F
e
785
20
20
24VDC Ckt. 3
10A Max.
F8 F10 F9
24VDC Ckt. 2
10A Max.
24VDC Ckt. 1
10A Max.
24VDC fuses on EF-785 front panel
W
IRING
T
OPOLOGIES
There are three ways in which to distribute 24VDC power to loads in your
machine, and each topology has its own pros and cons. The following is a
brief description of each wiring method.
• Daisy-chained 24VDC power from the eF-785 is connected to
the first load in the chain; power from the first load is connected
to the second load, and so on. This is the simplest wiring topology
available, but does not have the redundancy and lower resistance
that the Daisy-chained loop topology offers.
Daisy-chained wiring topology
• Daisy-chained loop This topology is similar to the daisy-
chained wiring described above, the difference being that the
“last” load in the chain is connected back to the eF-785. This type
of wiring offers the advantages of not only being redundant
should one of the cables delivering power to the loads become
open or intermittent, but addition of another power-carrying
cable supplying the loads lowers supply-to-load resistance (and
subsequently the I
2
R power loss in the cabling). This parallel
power path provides improved machine performance and
reliability.